Power supply method, readable storage medium, chip, and electronic device

Abstract

The present application relates to the technical field of electronics, and discloses a power supply method, a readable storage medium, a chip, and an electronic device. The electronic device can store correspondences between voltage parameters of a power supply module and phase-cut current thresholds corresponding to different power supply groups. During operation of the electronic device, current voltage parameters of the power supply module can be obtained, and, on the basis of the correspondences, phase-cut current thresholds matching the current voltage parameters can be determined. Then, on the basis of a relationship between the current output current of the power supply module for a display screen and each determined phase-cut current threshold, the electronic device can supply power to a load via a power supply group having the highest power supply efficiency corresponding to the current output current. In this way, since the phase-cut current thresholds are matched with the current input voltage and current output voltage of the power supply module, it can be ensured that the power supply module operates at a power supply phase count corresponding to higher efficiency, thereby improving the efficiency of the power supply module in supplying power to the load and reducing the power consumption of the electronic device.

Description

Power supply method, readable storage medium, chip and electronic device

[0001] This application claims priority to Chinese Patent Application No. 202410708890.5, filed on May 31, 2024, entitled "Power Supply Method, Readable Storage Medium, Chip and Electronic Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of electronic technology, and in particular to a power supply method, a readable storage medium, a chip, and an electronic device. Background Technology

[0003] In electronic devices, the power supply module that powers the display screen typically includes one or more power management integrated circuits (PMICs), each of which usually includes multiple power supply units. When the display screen requires a small current, the power supply module can power the display screen using a smaller number of power supply units; when the display screen requires a large current, the power supply module can power the display screen using a larger number of power supply units.

[0004] Generally, the current supplied by a power supply module using different numbers of power supply units overlaps within a certain range. For example, both one and two power supply units can provide an output current of 0-200mA (hereinafter, the number of power supply units used will be referred to as the number of power supply phases; power supply units with different numbers of power supply phases form different power supply groups). However, when the PMIC output current is the same, the power supply efficiency of the power supply module varies depending on the number of power supply units used. For example, when the output current is greater than 150mA, the power supply efficiency using two power supply units will be greater than that using one power supply unit. If the output current of the power supply module is 160mA, then the power supply efficiency using two power supply units will be greater than that using one power supply unit.

[0005] When the power supply modules output the same amount of electrical energy, that is, when providing the same amount of electrical energy to the display screen, the lower the power supply efficiency of the power supply group used, the higher the power consumption. In the example above, if a 160mA output current needs to be provided to the display screen, the power consumption of using one power supply unit to power the display screen is higher than that of using two power supply units. Summary of the Invention

[0006] This application provides a power supply method, a readable storage medium, a chip, and an electronic device that can ensure that the PMIC uses the most efficient power supply group to power the load under different voltage parameters and / or different output currents.

[0007] A first aspect provides a power supply method applied to an electronic device, the electronic device including a power supply module, the power supply module including a plurality of power supply units; the method includes: using a first number of power supply units to supply power to a load of the electronic device; when the voltage parameter of the power supply module is a first voltage parameter, detecting that the current output by the power supply module to the load changes to a first phase-cutting current threshold, and switching the number of power supply units supplying power to the load from the first number to a second number, wherein the voltage parameter of the power supply module includes at least one of the input voltage and the output voltage of the power supply module; when the voltage parameter of the power supply module is a second voltage parameter, detecting that the current output by the power supply module to the load changes to a second phase-cutting current threshold, and switching the number of power supply units supplying power to the load from the first number to the second number, wherein the second voltage parameter is different from the first voltage parameter, and the second phase-cutting current threshold is different from the first phase-cutting current threshold.

[0008] In this method, the first phase-cutting current threshold can be the phase-cutting current threshold for switching the power supply group corresponding to the first number of power supply units to the power supply group corresponding to the second number of power supply units under the first voltage parameter. Therefore, under the first voltage parameter, when the output current of the power supply module reaches the first phase-cutting current threshold, the power supply efficiency of using the power supply group corresponding to the second number of power supply units to power the load is higher than that of using the power supply group corresponding to the first number of power supply units to power the load. The second phase-cutting current threshold can be the phase-cutting current threshold for switching the power supply group corresponding to the first number of power supply units to the power supply group under the second voltage parameter. Therefore, under the second voltage parameter, when the output current of the power supply module reaches the second phase-cutting current threshold, the power supply efficiency of using the power supply group corresponding to the second number of power supply units to power the load is higher than that of using the power supply group corresponding to the first number of power supply units to power the load. Based on this, when the voltage parameters of the power supply module are different, the electronic device switches the number of power supply units supplied by the power supply module to power the load based on the relationship between the current output by the power supply module to the load and the phase-cutting current threshold corresponding to the current voltage parameters (first voltage parameter or second voltage parameter) of the power supply module. This ensures that the power supply module always uses the number of power supply units with the highest power supply efficiency to power the load.

[0009] For example, in the scenarios shown in Figures 2A and 2C below, the first voltage parameter can be an input voltage of 3.8V and an output voltage of -3V, and the first phase-cutting current threshold can be i1. The second voltage parameter can be an input voltage of 3.8V and an output voltage of -4V, and the second phase-cutting current threshold can be i3. When the voltage parameter of the power supply module is the first voltage parameter, the electronic device can switch the number of power supply units from 1 (as the first number) to 2 (as the second number) when the output current of the power supply module increases to i1. When the voltage parameter of the power supply module is the second voltage parameter, the electronic device can switch the number of power supply units from 1 (as the first number) to 2 (as the second number) when the output current of the power supply module increases to i3. Compared to the scenario shown in Figure 2E, when the voltage parameter of the power supply module is the second voltage parameter, and the output current of the power supply module is between i3 and i1, the electronic device uses 2 power supply units (2-phase power supply group) to power the load instead of 1 power supply unit (1-phase power supply group), thus improving power supply efficiency.

[0010] In one possible implementation of the first aspect described above, when the voltage parameter of the power supply module is the first voltage parameter and the current output by the power supply module to the load changes to the first phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency of using other numbers of power supply units to supply power to the load; when the voltage parameter of the power supply module is the second voltage parameter and the current output by the power supply module to the load changes to the second phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency of using other numbers of power supply units to supply power to the load.

[0011] In one possible implementation of the first aspect above, the second quantity is greater than the first quantity; detecting that the current output by the power supply module to the load changes to the first phase current threshold includes: detecting that the current output by the power supply module to the load increases to the first phase current threshold.

[0012] In one possible implementation of the first aspect described above, when the voltage parameter of the power supply module is the first voltage parameter and the current output by the power supply module to the load is less than the first phase-cutting current threshold, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency of using the second number of power supply units to supply power to the load; when the voltage parameter of the power supply module is the first voltage parameter and the current output by the power supply module to the load is greater than the first phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency of using the first number of power supply units to supply power to the load; when the voltage parameter of the power supply module is the second voltage parameter and the current output by the power supply module to the load is less than the second phase-cutting current threshold, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency of using the second number of power supply units to supply power to the load; when the voltage parameter of the power supply module is the second voltage parameter and the current output by the power supply module to the load is greater than the second phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency of using the first number of power supply units to supply power to the load.

[0013] In one possible implementation of the first aspect above, the second quantity is less than the first quantity; detecting that the current output by the power supply module to the load changes to the first phase current threshold includes: detecting that the current output by the power supply module to the load decreases to the first phase current threshold.

[0014] In one possible implementation of the first aspect described above, when the voltage parameter of the power supply module is the first voltage parameter, the current output by the power supply module to the load is less than the first phase-cut current threshold, or the current output by the power supply module to the load is less than the sum of the first phase-cut current threshold and the first current value, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency of using the first number of power supply units to supply power to the load; when the voltage parameter of the power supply module is the first voltage parameter, the current output by the power supply module to the load is greater than the first phase-cut current threshold, or the current output by the power supply module to the load is greater than the sum of the first phase-cut current threshold and the first current value, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency of using the second number of power supply units to supply power to the load. The power supply efficiency is as follows: When the voltage parameter of the power supply module is the second voltage parameter, the current output by the power supply module to the load is less than the second phase current threshold, or the current output by the power supply module to the load is less than the sum of the second phase current threshold and the first current value, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency using the first number of power supply units to supply power to the load; when the voltage parameter of the power supply module is the second voltage parameter, the current output by the power supply module to the load is greater than the second phase current threshold, or the current output by the power supply module to the load is greater than the sum of the second phase current threshold and the first current value, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency using the second number of power supply units to supply power to the load.

[0015] In this implementation, the first current value can be the negative value of the hysteresis current value mentioned below, and the first phase-cutting current threshold can be the difference between the phase-cutting current threshold for switching the power supply group corresponding to the second number of power supply units to the power supply group corresponding to the first number of power supply units and the hysteresis current value mentioned below.

[0016] In one possible implementation of the first aspect above, the first phase-cutting current threshold is determined based on the first voltage parameter and the first correspondence, and the second phase-cutting current threshold is determined based on the second voltage parameter and the first correspondence, wherein the first correspondence is the correspondence between the voltage parameter of the power supply module and the phase-cutting current threshold.

[0017] In one possible implementation of the first aspect above, the power supply module includes three power supply units, and the three power supply units are disposed in a first power management integrated circuit; when the voltage parameter of the power supply module is a first voltage parameter, if it is detected that the current output by the power supply module to the load changes to a first phase-cutting current threshold, the number of power supply units supplying power to the load by the power supply module is switched from a first number to a second number, specifically including: obtaining a third phase-cutting current threshold and a fourth phase-cutting current threshold corresponding to the first voltage parameter from a first correspondence based on the first voltage parameter, wherein the fourth phase-cutting current threshold is greater than the third phase-cutting current threshold; if the first phase-cutting current threshold is the third phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the first phase-cutting current threshold, the number of power supply units supplying power to the load by the power supply module is switched from 1 (as the first number) to 2 (as the second number); or, if the first phase-cutting current threshold is the fourth phase-cutting current threshold... In the following situations, if the current output by the power supply module to the load is detected to increase to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the first quantity) to 3 (as the second quantity); or if the first phase current threshold is the third phase current threshold or the first phase current threshold is the difference between the third phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the first quantity) to 1 (as the second quantity); or if the first phase current threshold is the fourth phase current threshold or the first phase current threshold is the difference between the fourth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 3 (as the first quantity) to 2 (as the second quantity).

[0018] In this implementation, the first current value can be a negative value of the hysteresis current value (described below).

[0019] In one possible implementation of the first aspect above, when the voltage parameter of the power supply module is the second voltage parameter, detecting that the current output by the power supply module to the load changes to the second phase current threshold, and switching the number of power supply units supplied by the power supply module to the load from the first number to the second number, specifically includes: obtaining the fifth phase current threshold and the sixth phase current threshold corresponding to the second voltage parameter from the first correspondence based on the second voltage parameter, wherein the sixth phase current threshold is greater than the fifth phase current threshold, the sixth phase current threshold is different from the fourth phase current threshold, and the fifth phase current threshold is different from the third phase current threshold; when the second phase current threshold is the fifth phase current threshold, detecting that the current output by the power supply module to the load increases to the second phase current threshold, and switching the number of power supply units supplied by the power supply module to the load from 1 to 2; or, when the second phase current threshold is the sixth phase current threshold, detecting that the current output by the power supply module to the load increases to the second phase current threshold, and switching the number of power supply units supplied by the power supply module to the load from 1 to 2; or, when the second phase current threshold is the sixth phase current threshold, detecting that the current output by the power supply module to the load increases to the second phase current threshold, and switching the number of power supply units supplied by the power supply module to the load from 1 to 2. When the current output by the power module to the load increases to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the first number) to 3 (as the second number); or when the first phase-cutting current threshold is the fifth phase-cutting current threshold or the first phase-cutting current threshold is the difference between the fifth phase-cutting current threshold and the first current value, when the current output by the power supply module to the load decreases to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the first number) to 1 (as the second number); or when the second phase-cutting current threshold is the sixth phase-cutting current threshold or the second phase-cutting current threshold is the difference between the sixth phase-cutting current threshold and the first current value, when the current output by the power supply module to the load decreases to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 3 (as the first number) to 2 (as the second number).

[0020] In one possible implementation of the first aspect above, the power supply module includes a first power supply unit, a second power supply unit, a third power supply unit, and a fourth power supply unit, wherein the first and second power supply units are disposed in a second power management integrated circuit, and the third and fourth power supply units are disposed in a third power management integrated circuit; when the voltage parameter of the power supply module is a first voltage parameter, if it is detected that the current output by the power supply module to the load changes to a first phase-cutting current threshold, the number of power supply units supplying power to the load by the power supply module is switched from a first number to a second number, specifically including: obtaining the seventh phase-cutting current threshold and the eighth phase-cutting current threshold corresponding to the first voltage parameter from a first correspondence based on the first voltage parameter, wherein the eighth phase-cutting current threshold is greater than the seventh phase-cutting current threshold; if the first phase-cutting current threshold is the seventh phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the first phase-cutting current threshold, the number of power supply units supplying power to the load by the power supply module is switched from 1 (as the first number) to 2 (as the second number). (As the second quantity); when the first phase current threshold is the eighth phase current threshold, if the current output by the power supply module to the load is detected to increase to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the first quantity) to 4 (as the second quantity); when the first phase current threshold is the seventh phase current threshold or the first phase current threshold is the difference between the seventh phase current threshold and the first current value, if the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 (as the second quantity) to 1 (as the first quantity); when the first phase current threshold is the eighth phase current threshold or the first phase current threshold is the difference between the eighth phase current threshold and the first current value, if the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 4 (as the first quantity) to 2 (as the second quantity).

[0021] In this implementation, the first current value can be a negative value of the hysteresis current value (described below).

[0022] In one possible implementation of the first aspect above, when the voltage parameter of the power supply module is the second voltage parameter, if the current output by the power supply module to the load changes to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to the second number. Specifically, this includes: obtaining the ninth and tenth phase current thresholds corresponding to the first voltage parameter from the first correspondence based on the first voltage parameter, wherein the tenth phase current threshold is greater than the ninth phase current threshold; if the second phase current threshold is the ninth phase current threshold, if the current output by the power supply module to the load increases to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 1 (as the first number) to 2 (as the second number); or, if the second phase current threshold is the tenth phase current threshold, if the current output by the power supply module to the load is detected... The number of power supply units supplied by the power supply module to the load is changed from 2 (as the first number) to 4 (as the second number) when the second phase current threshold is the ninth phase current threshold or the second phase current threshold is the difference between the ninth phase current threshold and the first current value. When the current output by the power supply module to the load is detected to decrease to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is changed from 2 (as the first number) to 1 (as the second number). When the second phase current threshold is the tenth phase current threshold or the second phase current threshold is the difference between the tenth phase current threshold and the first current value, the current output by the power supply module to the load is detected to decrease to the second phase current threshold, and the number of power supply units supplied by the power supply module to the load is changed from 4 (as the first number) to 2 (as the second number).

[0023] In one possible implementation of the first aspect above, the number of power supply units that supply power to the load by the power supply module is switched from 1 to 2, specifically including: switching the power supply unit that supplies power to the load from a first power supply unit to a first power supply unit and a second power supply unit; the number of power supply units that supply power to the load by the power supply module is switched from 2 to 4, specifically including: switching the power supply unit that supplies power to the load from a first power supply unit and a second power supply unit to a first power supply unit, a second power supply unit, a third power supply unit and a fourth power supply unit.

[0024] In one possible implementation of the first aspect described above, the load is a display screen of an electronic device, and the output voltage of the power supply module is used to provide an emitter voltage source for the display screen.

[0025] In one possible implementation of the first aspect above, the output voltage of the power supply module is determined based on the brightness of the display screen and a second correspondence, wherein the second correspondence is the correspondence between the voltage value of the display screen's emitter layer voltage source and the brightness of the display screen.

[0026] In a second aspect, a power supply method is provided, applied to an electronic device. The electronic device includes a power supply module, which includes multiple power supply units. The method includes: acquiring a third voltage parameter of the power supply module, the voltage parameter of the power supply module including at least one of the input voltage and output voltage of the power supply module; determining at least one phase-cutting current threshold corresponding to the third voltage parameter based on a first correspondence, wherein the first correspondence is the correspondence between the voltage parameter of the power supply module and the phase-cutting current threshold; and using a third number of power supply units to supply power to the load based on the relationship between a first current output by the power supply module to a load in the electronic device and the at least one phase-cutting current threshold, wherein, when the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is the first current, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is higher than the power supply efficiency of using other numbers of power supply units to supply power to the load.

[0027] In one possible implementation of the second aspect above, the at least one phase-cutting current threshold includes an eleventh phase-cutting current threshold; when the voltage parameter of the power supply module is a third voltage parameter and the current output by the power supply module to the load is greater than the eleventh phase-cutting current threshold, the power supply efficiency of the power supply module using a third number of power supply units to supply power to the load is greater than the power supply efficiency of using a fourth number of power supply units to supply power to the load, wherein the fourth number is less than the third number; when the voltage parameter of the power supply module is a third voltage parameter and the current output by the power supply module to the load is less than the eleventh phase-cutting current threshold, the power supply efficiency of the power supply module using a third number of power supply units to supply power to the load is less than the power supply efficiency of using a fourth number of power supply units to supply power to the load; the above-mentioned use of a third number of power supply units to supply power to the load based on the relationship between the first current output by the power supply module to the load in the electronic device and at least one phase-cutting current threshold specifically includes: detecting that the first current increases to the eleventh phase-cutting current threshold, and using a third number of power supply units to supply power to the load.

[0028] In one possible implementation of the second aspect above, the at least one phase-cut current threshold includes a twelfth phase-cut current threshold; when the voltage parameter of the power supply module is a third voltage parameter and the current output by the power supply module to the load is greater than the twelfth phase-cut current threshold, the power supply efficiency of the power supply module using a third number of power supply units to supply power to the load is less than the power supply efficiency of using a fifth number of power supply units to supply power to the load, wherein the fifth number is greater than the third number; when the voltage parameter of the power supply module is a third voltage parameter and the current output by the power supply module to the load is less than the twelfth phase-cut current threshold, the power supply efficiency of the power supply module using a third number of power supply units to supply power to the load is greater than the power supply efficiency of using a fifth number of power supply units to supply power to the load; the above-mentioned use of a third number of power supply units to supply power to the load based on the relationship between the first current output by the power supply module to the load in the electronic device and at least one phase-cut current threshold specifically includes: detecting that the first current decreases to the twelfth phase-cut current threshold or the difference between the twelfth phase-cut current threshold and the third current value, and using a third number of power supply units to supply power to the load.

[0029] Thirdly, an electronic device is provided, comprising: one or more processors, the one or more processors being configured to perform the power supply method provided in the first aspect and any possible implementation thereof.

[0030] Fourthly, a readable storage medium is provided, the readable storage medium including instructions, which, when executed by an electronic device, cause the electronic device to implement the power supply method provided in the first aspect and any possible implementation of the first aspect.

[0031] Fifthly, a chip is provided, comprising a control unit, a voltage sampling circuit, a current sampling circuit, and the aforementioned power supply module; the voltage sampling circuit is used to acquire the aforementioned first voltage parameter and the aforementioned second voltage parameter; the current sampling circuit is used to acquire the current output by the aforementioned power supply module to the load; and the control unit is used to execute the aforementioned first aspect and any possible implementation of the provided power supply method.

[0032] It should be noted that the beneficial effects of the third to fifth aspects can be referred to the effective effects of the first aspect mentioned above, and will not be elaborated here. Attached Figure Description

[0033] Figure 1A illustrates a schematic diagram of an electronic device that supplies power to a display screen via a display screen power supply module, according to some embodiments of this application.

[0034] Figure 1B illustrates a schematic diagram of a PMIC according to some embodiments of this application.

[0035] Figure 2A shows a schematic diagram of the power supply efficiency curve of a PMIC 01 under a certain voltage parameter, according to some embodiments of this application.

[0036] Figure 2B shows a schematic diagram of the power supply efficiency curve of a PMIC 01 under another voltage parameter, according to some embodiments of this application.

[0037] Figure 2C shows a schematic diagram of the power supply efficiency curve of a PMIC 01 under another voltage parameter, according to some embodiments of this application.

[0038] Figure 2D shows a schematic diagram of the power supply efficiency curve of a PMIC according to some embodiments of this application.

[0039] Figure 2E illustrates, according to some embodiments of this application, a schematic diagram of the number of power supply phases of a PMIC 01 as a function of output current.

[0040] Figure 2F shows a schematic diagram of the number of power supply phases of another PMIC 01 as a function of output current, according to some embodiments of this application.

[0041] Figure 2G illustrates, according to some embodiments of this application, a schematic diagram of the number of power supply phases of another PMIC 01 as a function of output current.

[0042] Figure 3A shows a schematic flowchart of a power supply method according to some embodiments of this application.

[0043] Figure 3B shows a schematic diagram of a power supply group used in the output current variation process of a display power supply module according to some embodiments of this application.

[0044] Figure 4 illustrates a process diagram of a power supply method according to some embodiments of this application.

[0045] Figure 5A shows a schematic diagram of powering a display module via PMIC 02 according to some embodiments of this application.

[0046] Figure 5B shows a schematic diagram of the power supply efficiency curve of a PMIC 02 according to some embodiments of this application.

[0047] Figure 6A shows a schematic diagram of powering a display module via PMIC 03 and PMIC 04 according to some embodiments of this application.

[0048] Figure 6B illustrates a schematic diagram of powering a display module via PMIC 05 and PMIC 06 according to some embodiments of this application.

[0049] Figure 7 illustrates a flowchart of another power supply method according to some embodiments of this application.

[0050] Figure 8 illustrates a process diagram of another power supply method according to some embodiments of this application.

[0051] Figure 9 illustrates a schematic diagram of powering a display module via PMIC 07 and PMIC 08, according to some embodiments of this application.

[0052] Figure 10 illustrates a process diagram of another power supply method according to some embodiments of this application.

[0053] Figure 11 shows a schematic diagram of the structure of an electronic device 400 according to some embodiments of this application. Detailed Implementation

[0054] The illustrative embodiments of this application include, but are not limited to, power supply methods, readable storage media, chips, and electronic devices.

[0055] It should be noted that the solution provided in this application can be applied to any scenario where the load is powered by multiple power supply units, such as providing a negative voltage (e.g., an emitter layer voltage supply source, ELVSS) or a positive voltage to the display screen via a PMIC, etc., without limitation. In the following embodiments, the technical solution of this application is introduced by taking the provision of ELVSS to the display screen in the display module via multiple power supply units as an example.

[0056] For ease of description, in the following embodiments, the PMIC that supplies power to the display module in the electronic device is referred to as the display power supply module. When the display power supply module of the electronic device uses i power supply units to supply power to the load, these i power supply units are referred to as i-phase power supply groups. The i power supply units can be power supply units in the same PMIC or power supply units in different PMICs.

[0057] The technical solution of this application is described below with reference to the accompanying drawings.

[0058] Figure 1A illustrates a schematic diagram of an electronic device that supplies power to a display screen via a display screen power supply module, according to some embodiments of this application.

[0059] As shown in Figure 1A, the electronic device 10 may include a battery, a display power supply module, and a display module, wherein the display power supply module may include one or more PMICs. The battery of the electronic device 10 can provide an input voltage (V) to the PMIC in the display power supply module. in The output voltage (V) of the PMIC in the display power supply module. out It can provide power to the display module, for example, to provide ELVSS to the display screen in the display module.

[0060] It should be noted that a PMIC, also known as a power management chip, power driver chip, driver chip, power supply chip, etc., is an integrated circuit that performs voltage conversion. A PMIC may include multi-phase power supply units (power supply units may also be called voltage converters, voltage conversion circuits, voltage transformers, voltage conversion circuits, direct current-direct current converters, DC-DC converters, boost converters, buck converters, low-dropout regulators (LDOs), etc.). The PMIC can supply power to the display screen, display driver integrated circuit (DDIC), etc. in the display module through some or all of these power supply units. In some embodiments, a power supply unit may be a collection of circuits in the PMIC that can independently provide voltage / current to the load.

[0061] For example, FIG1B illustrates a schematic diagram of a PMIC according to some embodiments of the present application.

[0062] As shown in Figure 1B, the display power supply module in the electronic device 10 includes a PMIC 01. The PMIC 01 includes power supply unit P1 and power supply unit P2. Power supply unit P1 includes field-effect transistors Q1 and Q2, and power supply unit P2 includes field-effect transistors Q3 and Q4. Field-effect transistor Q1 is connected to one end of capacitor C1 and is used to receive the input voltage V provided by the battery. in The drain of MOSFET Q1 is connected to the source of MOSFET Q2 and one end of inductor L1. The drain of MOSFET Q2 is connected to one end of capacitor C2 and the voltage V used to output voltage to the display module. out (e.g., ELVSS, etc.) The other end of capacitor C1, the other end of capacitor C2, and the other end of inductor L1 are grounded. Field-effect transistor Q3 is connected to one of the aforementioned ends of capacitor C1. The drain of field-effect transistor Q3 is connected to the source of field-effect transistor Q4 and one end of inductor L2. The drain of field-effect transistor Q4 is connected to one of the aforementioned ends of capacitor C2. The other end of inductor L2 is grounded. PMIC 01 can input control signals to the gates of field-effect transistors Q1, Q2, Q3, and Q4 based on its internal control circuitry (e.g., a microcontroller, not shown in the figure) to control the on and off states of field-effect transistors Q1, Q2, Q3, and Q4, thereby controlling the power supply to the load from power supply unit P1 and / or power supply unit P2.

[0063] It should be noted that a PMIC can contain multiple power supply units, one or more of which can be used to power the display module. For power supply units in one or more PMICs supplying power to the same load, their input and output voltages are always the same, and these power supply units supplying the same load power the display module in parallel.

[0064] It should be noted that the PMIC shown in the various embodiments of this application only includes a power supply unit that provides ELVSS to the display module, which is only an example. In other embodiments, the PMIC may also include one or more power supply units that provide voltages other than ELVSS to the display module (or provide voltages other than ELVSS to other modules), which is not limited here.

[0065] It should be noted that the structure of PMIC 01 shown in Figure 1B is only an example. The structure of the power supply unit can take other forms. The PMIC can also include more power supply units. The PMIC can also include more modules, such as control units, storage units (such as registers), detection units (such as circuits or modules for detecting voltage, current, etc.), and other functional circuits, etc., which are not limited here.

[0066] As described in the background section, if the display power supply module uses a power supply group with lower power supply efficiency to supply power to the load at a certain output current, the power consumption of the display power supply module will be higher when providing the same amount of power to the load.

[0067] Therefore, this application discloses a power supply method that pre-establishes a correspondence between different output currents of the display power supply module and the number of power supply phases with the highest power supply efficiency under the corresponding output current. Thus, during power supply, the electronic device can obtain the current output current of the display power supply module and, based on this correspondence and the current output current, use the power supply group with the highest power supply efficiency to supply power to the load, thereby improving the power supply efficiency of the display power supply module and reducing the power consumption of the electronic device.

[0068] Generally speaking, the power supply efficiency of a display power supply module with different numbers of phases is related to the output current, input voltage, and output voltage of the display power supply module.

[0069] Specifically, generally, the power supply efficiency of a certain power supply group of the display power supply module first increases and then decreases as the output current increases. For two power supply groups with different power supply phases, the power supply efficiency curves (hereinafter referred to as power supply efficiency curves) with respect to the change of output current have an intersection point (hereinafter referred to as the phase-cutting current threshold of the two power supply groups corresponding to this intersection point). The power supply efficiency of using these two power supply groups for power supply is the same at this intersection point, and on different sides of the intersection point, the magnitude relationship of the power supply efficiencies of the two power supply groups is different. For example, as shown in FIG. 2A, corresponding to the aforementioned PMIC 01, when the input voltage (V in ) is 3.8V and the output voltage (ELVSS) is -3V, the output current corresponding to the intersection point of the power supply efficiency curve of the single-phase power supply group and the power supply efficiency curve of the two-phase power supply group is i1 (serving as the phase-cutting current threshold for switching from single-phase to two-phase). When the output current of PMIC 01 is i1, the power supply efficiencies of the single-phase power supply group and the two-phase power supply group are the same. When the output current of PMIC 01 is less than i1, the power supply efficiency of the single-phase power supply group is higher than that of the two-phase power supply group. When the output current of PMIC 01 is greater than i1, the power supply efficiency of the single-phase power supply group is lower than that of the two-phase power supply group. For the sake of convenience of description, hereinafter, the current at the intersection point of the power supply efficiency curve of the x-phase power supply group and the power supply efficiency curve of the y-phase power supply group is denoted as I x-y .

[0070] In addition, for two power supply groups, at different output voltages or input voltages, the magnitudes of the phase-cutting current thresholds corresponding to the two power supply groups are different.

[0071] For example, referring to FIG. 2B, compared with the situation shown in FIG. 2A, when the input voltage of PMIC 01 is adjusted from 3.8V to 3V and the output voltage -3V remains unchanged, the phase-cutting current thresholds of the single-phase power supply group and the two-phase power supply group of PMIC 01 change from i1 to i2 (i2 < i1). That is to say, when the output current is i2, the power supply efficiencies of the single-phase power supply group and the two-phase power supply group are the same. When the output current is less than i2, the power supply efficiency of the single-phase power supply group is higher than that of the two-phase power supply group. When the output current is greater than i2, the power supply efficiency of the single-phase power supply group is lower than that of the two-phase power supply group.

[0072] For another example, referring to FIG. 2C, compared with the situation shown in FIG. 2A, when the output voltage of the PMIC 01 is adjusted from -3V to -4V and the input voltage of 3.8V remains unchanged, the phase-cutoff current thresholds of the 1-phase power supply group and the 2-phase power supply group of the PMIC 01 change from i1 to i3 (i3 < i2 < i1). That is to say, when the output current is i3, the power supply efficiencies of the 1-phase power supply group and the 2-phase power supply group are the same; when the output current is less than i3, the power supply efficiency of the 1-phase power supply group is higher than that of the 2-phase power supply group; when the output current is greater than i3, the power supply efficiency of the 1-phase power supply group is lower than that of the 2-phase power supply group.

[0073] Moreover, for power supply groups with different numbers of phases, when the input voltage and the output voltage are fixed, the more the number of phases corresponding to the power supply group, the greater the corresponding phase-cutoff current threshold. Corresponding to the display power supply module in the electronic device including n power supply units, when the input voltage and the output voltage are fixed, assuming that the phase-cutoff current threshold between the i-phase (where i is an integer greater than 0 and less than n) power supply group and the i + 1-phase power supply group is I i- (i+1) , the larger i is, the larger the phase-cutoff current threshold I i-(i+1) .

[0074] For example, assume that the display power supply module in the electronic device includes 4 power supply units, corresponding to a 1-phase power supply group, a 2-phase power supply group, a 3-phase power supply group, and a 4-phase power supply group. Referring to FIG. 2D, the phase-cutoff current threshold between the 1-phase power supply group and the 2-phase power supply group is I 1-2 , the phase-cutoff current threshold between the 2-phase power supply group and the 3-phase power supply group is I 2-3 (I 2-3 > I 1-2 ), the phase-cutoff current threshold between the 3-phase power supply group and the 4-phase power supply group is I 3-4 (I 3-4 > I 2-3 ). That is to say, when the output current is less than I 1-2 , the power supply efficiency of using the 1-phase power supply group for power supply is the highest; when the output current is between I 1-2 and I 2-3 , the power supply efficiency of using the 2-phase power supply group for power supply is the highest; when the output current is between I 2-3 and I 3-4 , the power supply efficiency of using the 3-phase power supply group for power supply is the highest; when the output current is greater than I 3-4 , the power supply efficiency of using the 4-phase power supply group for power supply is the highest.

[0075] Based on this, if the influence of the input voltage and the output voltage is not considered when establishing the correspondence between different output currents of the display power supply module and the power supply phase number with the highest power supply efficiency corresponding to the output current, it will cause the PMIC to not operate at the power supply phase number with the highest power supply efficiency.

[0076] For example, if the input voltage of PMIC 01 (V in The input voltage is 3.8V and the output voltage (ELVSS) is -4V. The input voltage (V) shown in Figure 2A is used. in The phase-cutting current threshold i1 is defined when the input voltage (V) is 3.8V and the output voltage (ELVSS) is -3V. Referring to Figure 2E, PMIC 01 uses a single-phase power supply when the output current is less than i1 and a two-phase power supply when the output current is greater than i1. The input voltage (V) of PMIC 01 is... in When the output voltage (ELVSS) is 3.8V, the output current is -4V, and the output current is greater than i3 and less than i1, the power supply efficiency of PMIC 01 using a 1-phase power supply group is lower than that using a 2-phase power supply group. This causes PMIC 01 to be unable to operate at the power supply phase with the highest power supply efficiency when the output current is greater than i3 and less than i1.

[0077] Therefore, when establishing the correspondence between different output currents of the display power supply module and the number of power supply phases with the highest power supply efficiency under the corresponding output current, the influence of input voltage and output voltage needs to be considered. Based on the above relationship between the input voltage, output voltage, output current, and power supply efficiency of the display power supply module, when the input voltage and output voltage of the display power supply module are fixed, the phase-cutting current thresholds of different power supply groups for the display power supply module under these fixed input and output voltages can be obtained by measurement. During the operation of the electronic device, the number of phases of the display power supply module supplying power to the display module can be adjusted according to the relationship between the phase-cutting current thresholds of the output current of the display power supply module, so as to use the power supply group with the highest power supply efficiency to power the load.

[0078] For example, corresponding to the aforementioned PMIC 01, if the input voltage of PMIC 01 is fixed at 3.8V and the output voltage is fixed at -3V, then the phase-cutting current threshold for the 1-phase power supply group and the 2-phase power supply group is i1. During the operation of PMIC 01, the current output current of PMIC 01 can be compared with i1, and the number of power supply phases can be determined based on the relationship between the current output current and i1. For example, referring to Figure 2F, when the current output current of PMIC 01 is less than or equal to the aforementioned i1, power is supplied through the 1-phase power supply group (e.g., power supply unit P1 is working, power supply unit P2 is not working); when the current output current of PMIC 01 is greater than the aforementioned i1, power is supplied through the 2-phase power supply group (e.g., both power supply units P1 and P2 are working). In this way, it can be ensured that PMIC 01 uses a power supply group with higher power supply efficiency to supply power to the load, reducing the power consumption of electronic devices.

[0079] In some cases, the input and / or output voltages of the display power supply module are not fixed values, but rather values ​​that vary with the power supply or load. For example, referring to the situation shown in Figure 1A, the display power supply module in electronic device 10 is typically powered by a battery, and the battery voltage changes with the remaining battery charge, thus the input voltage of the display power supply module varies. As another example, the brightness of the display screen in electronic device 10 (e.g., a display screen using organic light-emitting diodes (OLEDs) or active-matrix organic light-emitting diodes (AMOLEDs)) is typically related to the value of the ELVSS (Elastic Vibration Spectrum Score). Different ELVSS values ​​correspond to different brightness levels, therefore the ELVSS output by the display power supply module to the display screen varies with the brightness of the display screen.

[0080] To improve the efficiency of the display power supply module in supplying power to the load when the input voltage and / or output voltage of the display power supply module (i.e., the input voltage and / or output voltage of the PMIC in the display power supply module) changes, the power supply method provided in this application embodiment allows the electronic device to store the voltage parameters of the display power supply module (e.g., input voltage and / or output voltage, hereinafter referred to as voltage parameters) (e.g., 3.8V and -3V in Figure 2A, 3V and -3V in Figure 2B, and 3.8V and -4V in Figure 2C) and the correspondence between the phase-cutting current thresholds corresponding to different power supply groups (hereinafter referred to as the first correspondence, e.g., the correspondence between 3.8V and -3V and I1 in Figure 2A, the correspondence between 3V and -3V and I2 in Figure 2B, and the correspondence between 3.8V and -4V and I3 in Figure 2C, etc.).

[0081] During operation, the electronic device can acquire the current voltage parameters of the display power supply module (e.g., the current input voltage (such as the battery supply voltage of the electronic device) and the current output voltage (e.g., the voltage output from the display power supply module to the display module) and determine the phase-cutting current threshold that matches the current voltage parameters based on a first correspondence. Then, the electronic device can supply power to the load (e.g., provide ELVSS to the display) through the power supply group with the highest power supply efficiency corresponding to the current output current, based on the relationship between the current output current of the display power supply module and the determined phase-cutting current thresholds. In this way, since the phase-cutting current thresholds are matched with the current input voltage and current output voltage of the display power supply module, it can be ensured that the display power supply module operates at a higher efficiency power supply phase number, thereby improving the efficiency of the display power supply module in supplying power to the load and reducing the power consumption of the electronic device.

[0082] Furthermore, since the electrical energy lost by the display power supply module is usually converted into heat, the higher the power supply efficiency of the display power supply module, the less electrical energy is lost in the display power supply module, and the less heat is generated. Based on the above method, the heat generation of the PMIC in electronic devices can also be reduced.

[0083] It should be noted that the voltage parameters of the display power supply module can vary depending on the application scenario. For example, in an application scenario where the input voltage of the display power supply module is fixed (or the range of input voltage variation is small) while the output voltage varies, the voltage parameters can include the output voltage of the display power supply module; in an application scenario where the output voltage of the display power supply module is fixed (or the range of output voltage variation is small) while the input voltage varies, the voltage parameters can include the input voltage of the display power supply module; and in an application scenario where both the input and output voltages of the display power supply module vary, the voltage parameters can include both the input and output voltages of the display power supply module. For ease of description, the technical solution of this application will be described below using an application scenario where both the input and output voltages of the display power supply module vary.

[0084] For example, corresponding to the situation shown in Figure 1B above, the electronic device can store different voltage parameters of the display power supply module (e.g., different combinations of input voltages and / or output voltages), and different phase-cutting current thresholds (denoted as I) for the 1-phase power supply group and the 2-phase power supply group. 1-2 The correspondence between voltage parameters and I. In other words, the first correspondence could be between voltage parameters and I. 1-2 The correspondence corresponds to a set of voltage parameters (e.g., a combination of input and output voltages). Electronic devices can determine an I based on this first correspondence. 1-2 The value of .

[0085] Thus, with an input voltage of 3.8V and an output voltage of -3V, the electronic device can determine I. 1-2 As shown in Figure 2A, i1 is used to power the display module through a two-phase power supply when the output current of PMIC 01 increases to i1, and through a single-phase power supply when the output current of PMIC 01 decreases to i1. With an input voltage of 3V and an output voltage of -3V, the electronic device can determine I. 1-2 As shown in Figure 2B, i2 is used to power the display module when the output current of PMIC 01 increases to i2, and when the output current of PMIC 01 decreases to i2, it powers the display module through a 2-phase power supply group; with an input voltage of 3.8V and an output voltage of -4V, the electronic device can determine I. 1-2As shown in Figure 2C, i3 is used to power the display module through a 2-phase power supply when the output current of PMIC 01 increases to i3, and through a 1-phase power supply when the output current of PMIC 01 decreases to i3.

[0086] In some embodiments, for an electronic device whose display power supply module includes n (n is a positive integer greater than 1) power supply units, there can be at most n types of power supply groups, such as a 1-phase power supply group, a 2-phase power supply group, ..., an n-phase power supply group. The electronic device can be designed to power the display module through m (where m is a positive integer less than or equal to n) of these n power supply groups, where the number of phases corresponding to the k-th power supply group increases with increasing k. In the above case, in the first correspondence, each group of voltage parameters can have m-1 phase-cutting current thresholds, where the j-th (j is a positive integer less than m) phase-cutting current threshold is the phase-cutting current threshold between the j-th power supply group and the (j+1)-th power supply group, denoted as I. j→j+1 .

[0087] In some implementations, the number of phases corresponding to each of the m power supply groups is different, that is, the number of power supply units corresponding to each power supply group is different, and the m power supply groups correspond to the m number of power supply units.

[0088] In some implementations, if the j-th power supply group is an x-phase power supply group and the (j+1)-th power supply group is a y-phase power supply group, then I under a certain voltage parameter j→j+1 The output current I at the intersection of the power supply efficiency curves of the x-phase power supply group and the y-phase power supply group under this voltage parameter can be used. x-y Thus, when j is less than m-1, the current output current I of the display power supply module... out in I j→j+1 and I j→j+2 When the current is between j+1, the power supply efficiency is the highest; the current output current I of the display power supply module is... out Less than or equal to I j→j+1 At that time, the power supply efficiency of the first power supply group is the highest; when the current output current I of the display power supply module is... out Greater than I (m-1)→m When the m-th power supply group is used, the power supply efficiency is the highest.

[0089] For example, if the power supply module of the display screen of an electronic device includes four power supply units, then the power supply group can include four types: a 1-phase power supply group, a 2-phase power supply group, a 3-phase power supply group, and a 4-phase power supply group.

[0090] When the display power supply module can supply power to the display module through a 1-phase power supply group (as the first type of power supply group), a 2-phase power supply group (as the second type of power supply group), a 3-phase power supply group (as the third type of power supply group), or a 4-phase power supply group (as the fourth type of power supply group) (i.e., m=n=4), the phase-cutting current threshold can include 3 (e.g., I). 1→2 I 2→3 I 3→4 In the first correspondence, each set of voltage parameters corresponds to a set of I. 1→2 I 2→3 I 3→4 The value of I. Referring to Figure 2D, in this case, I 1→2 It can be the output current I at the intersection of the power supply efficiency curve of a 1-phase power supply group and the power supply efficiency curve of a 2-phase power supply group. 1-2 I 2→3 The output current I at the intersection of the power supply efficiency curve of a 2-phase power supply group and the power supply efficiency curve of a 3-phase power supply group can be considered as the point where the power supply efficiency curve of the 2-phase power supply group intersects with that of the 3-phase power supply group. 2-3 I 3→4 The output current I at the intersection of the power supply efficiency curve of a 3-phase power supply group and the power supply efficiency curve of a 4-phase power supply group can be considered as the point where the power supply efficiency curve of the 3-phase power supply group intersects with that of the 4-phase power supply group. 3-4 .

[0091] When the display power supply module can supply power to the display module through a 1-phase power supply group (as the first type of power supply group), a 2-phase power supply group (as the second type of power supply group), or a 4-phase power supply group (as the third type of power supply group) (i.e., m=3), the current cut-off threshold can include two (e.g., I). 1→2 (Phase-cutting current threshold when switching from a 1-phase power supply group to a 2-phase power supply group), I 2→3 (The phase-cutting current threshold when switching from a 2-phase power supply group to a 4-phase power supply group)), in the first correspondence, each set of voltage parameters corresponds to a set of I. 1→2 I 2→4 The value of I. Referring to Figure 2D, in this case, I 1→2 It can be the output current I at the intersection of the power supply efficiency curve of a 1-phase power supply group and the power supply efficiency curve of a 2-phase power supply group. 1-2 I 2→3 It can be the output current I at the intersection of the power supply efficiency curve of a 3-phase power supply group and the power supply efficiency curve of a 4-phase power supply group. 2-4 .

[0092] In some embodiments, the first correspondence may be stored using a table, Extensible Markup Language (XML), a text file, or other data structures, or it may be stored using a function f indicating the correspondence between voltage parameters and phase-cutting current thresholds (e.g., phase-cutting current threshold I). C =f(V in Vout ), where V in The input voltage for the power supply module of the display screen, V out The output voltage of the power supply module for the display screen, I C This is the phase-cutting current threshold. The storage format of the first correspondence is not limited in this application embodiment.

[0093] For example, for an electronic device whose display power supply module includes n power supply units, there can be at most n types of power supply groups. If the display power supply module is designed to power the display module through m (m is a positive integer greater than 1 and less than or equal to n) of the n power supply groups, the first correspondence can be stored in Table 1 below.

[0094] Table 1 First Correspondence Table

[0095] As shown in Table 1, the first correspondence can be the voltage parameters of the display power supply module (input voltage V). in Output voltage V out ), and m-1 phase current thresholds (I 1→2 I 2→3 , ..., I (m-1)→m The correspondence between the input voltage and the input voltage (V). in Output voltage V out For each value in Table 1, there are m-1 phase-cutting current thresholds corresponding to that set of values. Based on Table 1, if the current voltage parameter of the display power supply module is "V in =V1, V out =V2", then the corresponding m-1 phase current thresholds are i 1-1 i 2-1 , ..., i (m-1)-1 If the current voltage parameter of the PMIC is "V" in =V1, V out =V3", then the corresponding m-1 phase current thresholds are i 1-2 i 2- 2, ..., i (m-1)-2 If the current voltage parameter of the PMIC is "V" in =V4, V out =V2", then the corresponding m-1 phase current thresholds are i 1-3 i 2-3 , ..., i (m-1)-3 .

[0096] It should be noted that the first correspondence shown in Table 1 is only an example. In other embodiments, the input and output voltage ranges of the power supply module for the display screen in the corresponding electronic device are different, and the voltage parameters may include fewer parameters, such as only the input voltage V. in Or output voltage V out No restrictions are imposed here.

[0097] It should be noted that the first correspondence shown in Table 1 can also be obtained through the aforementioned function I. C (I 1→2 I 2→3 , ..., I (m-1)→m )=f(V in V out This can be achieved by using the function f. For any set of current voltage parameters, the electronic device can calculate the corresponding m-1 phase current thresholds based on the function f.

[0098] In some embodiments, to reduce the storage space occupied by the first correspondence, when establishing the first correspondence, the input voltage of the display power supply module can be divided into M voltage ranges, and the output voltage of the display power supply module can be N (M and N can be the same or different). Each voltage range is represented by the same voltage value. Thus, there can be M types of input voltage, N types of output voltage, and M×N combinations of voltage parameters. In this way, the phase-cutting current threshold corresponding to each of the M×N voltage parameters can be obtained through theoretical calculations, experiments, etc., and recorded in the first correspondence.

[0099] For example, if the input voltage range is 3V to 4V, it can be divided into 10 (M=10) voltage intervals: 3–3.1V, 3.1–3.2V, 3.2–3.3V, 3.3–3.4V, 3.4–3.5V, 3.5–3.6V, 3.6–3.7V, 3.7–3.8V, 3.8–3.9V, and 3.9–4V. The corresponding voltage values ​​are denoted as 3.1V, 3.2V, 3.3V, and 3.4V, respectively. The voltage ranges are 3.5V, 3.6V, 3.7V, 3.8V, 3.9V, and 4V. If the output voltage range is -4V to -3V, it can be divided into 5 (N=5) voltage intervals: -4 to -3.8V, -3.8 to -3.6V, -3.6 to -3.4V, -3.4 to -3.2V, and -3.2 to -3V, respectively. The corresponding voltage values ​​are denoted as -3.8V, -3.6V, -3.4V, -3.2V, and -3V. Thus, the first correspondence can include 50 sets of phase-cutting current thresholds corresponding to M×N=50 combinations of voltage parameters. In this case, the electronic device can use the phase-cutting current threshold corresponding to the interval where the current voltage parameter is located as the phase-cutting current threshold corresponding to the current voltage parameter. For example, if the current voltage parameter is "V",...in = 3.35V (corresponding to a voltage range of 3.3~3.4V), V in = -3.54V (corresponding to the voltage range of -3.6 to -3.4V)", then the set of phase current thresholds corresponding to 3.4V and -3.4V in the first correspondence can be used as the phase current thresholds corresponding to the current voltage parameters.

[0100] During operation, the electronic device can obtain the corresponding m-1 phase-cutting current thresholds from Table 1 based on the current voltage parameters of the display power supply module, and select the power supply group with the highest power supply efficiency to power the display module based on the relationship between the current output current of the display power supply module and the obtained m-1 phase-cutting current thresholds.

[0101] In some embodiments, during operation, the electronic device can utilize the current output current I of the display power supply module. out Increase to I j→j+1 In the case where j is a positive integer less than m, switch to power supply through the (j+1)th power supply group; under the current output current I of the display power supply module... out Reduce to I j→j+1 In this case, the system switches to power supply via the j-th power supply group. For example, if the current voltage parameter of the aforementioned display power supply module is "V"... in =V1, V out In the case of "=V2", the electronic device can increase the current output current of the display power supply module to i. 2-1 In the case of switching to powering the display module via the second power supply group, the current output current of the display power supply module is reduced to i. 2-1 In this case, the power supply is switched to the first power supply group to power the display module.

[0102] In some embodiments, during operation, the electronic device may increase the current output of the display power supply module to I. j→j+1 In this case, switch to power supply via the (j+1)th power supply group; when the current output current of the display power supply module decreases to I... j→j+1 In the case of +ΔI, the power supply is switched to the j-th power supply group. Here, ΔI can be called the hysteresis current value. Thus, the phase-cutting current threshold for the display power supply module switching from the j-th power supply group to the (j+1)-th power supply group is different from the phase-cutting current threshold for switching from the (j+1)-th power supply group to the j-th power supply group, which avoids the ping-pong effect (e.g., when the current output current is equal to I). j→j+1 The same condition causes the electronic device to switch back and forth between the j-th power supply group and the (j+1)-th power supply group.

[0103] For example, the current voltage parameter of the aforementioned display power supply module is "V". in =V1, Vout In the case of "=V2", the electronic device can increase the current output current of the display power supply module to i. 2-1 In the case of switching to powering the display module via the second power supply group, the current output current of the display power supply module is reduced to i. 2-1 In the case of -ΔI, the power supply to the display module is switched to the first power supply group.

[0104] For example, referring to Figure 2G, the current voltage parameter corresponding to the aforementioned PMIC 01 shown in Figure 2A is "input voltage V". in =3.8V, output voltage V out In the case of (ELVSS)=-3V”, the phase-cutting current threshold I 1-2 Let i1 be the current output current of PMIC 01. When the current output current of PMIC 01 is less than i1, PMIC is powered by a single-phase power supply (e.g., power supply unit P1 is working and power supply unit P2 is not working). When the current output current of PMIC 01 increases to i1, PMIC 01 switches to power supply through a two-phase power supply (e.g., both power supply units P1 and P2 are working). When the current output current of PMIC 01 is greater than i2, PMIC is powered by a two-phase power supply. When the current output current of PMIC 01 decreases to i1-ΔI, PMIC 01 switches to power supply through a single-phase power supply.

[0105] In some embodiments, the hysteresis current value ΔI can be an empirical or experimental value. For example, the hysteresis current value ΔI can be determined based on the sampling accuracy of the device / module used in the electronic device to collect the output current of the display power supply module; the lower the sampling accuracy, the larger the hysteresis current value.

[0106] In some embodiments, the hysteresis current values ​​corresponding to different phase current thresholds may be the same or different, and this is not limited here.

[0107] In some embodiments, for an electronic device in which the display power supply module includes n power supply units, the n power supply units may be power supply units in one PMIC (e.g., the display power supply module includes one PMIC with n power supply units), or they may be power supply units in different PMICs (e.g., the display power supply module includes multiple PMICs, and the sum of the number of power supply units in the multiple PMICs is n).

[0108] In some embodiments, where an electronic device may include multiple PMICs, the number of phases of the multiple PMICs may be the same or different.

[0109] The technical solution of this application will now be described with reference to Figures 3A to 11.

[0110] For example, FIG3A illustrates a flowchart of a power supply method according to some embodiments of this application. As shown in FIG3A, the method includes the following steps:

[0111] S301, obtain the current voltage parameters of the display power supply module.

[0112] During operation, electronic devices can acquire the current voltage parameters of the display power supply module. These voltage parameters may include at least one of the input voltage and the output voltage.

[0113] In some embodiments, the number of voltage parameters varies depending on the electronic device. For example, in an application scenario where the input voltage of the display power supply module is fixed (or the range of input voltage variation is small) while the output voltage varies, the voltage parameters may include the output voltage of the display power supply module; in an application scenario where the output voltage of the display power supply module is fixed (or the range of output voltage variation is small) while the input voltage varies, the voltage parameters may include the input voltage of the display power supply module; in an application scenario where both the input and output voltages of the display power supply module vary, the voltage parameters may include both the input and output voltages of the display power supply module.

[0114] In some embodiments, the electronic device may be equipped with a circuit, device, or module (e.g., a fuel gauge, voltmeter, etc.) capable of detecting voltage. During operation, the electronic device can obtain the current voltage parameters of the display power supply module through the voltage detection device or module.

[0115] In some embodiments, since there is a correspondence between the brightness of the display screen and the ELVSS (Electronic Value Scale), the electronic device can store the correspondence between the brightness of the display screen and the ELVSS (hereinafter referred to as the brightness-ELVSS correspondence, also known as the second correspondence, which will be described in detail later). In this way, the electronic device can obtain the brightness of the display screen (e.g., obtain the brightness of the display screen from the processor, memory, or display module of the electronic device) and obtain the current voltage parameters of the display power supply module based on the brightness-ELVSS correspondence.

[0116] It should be noted that in other embodiments, the electronic device may also obtain the current voltage parameters of the display power supply module in other ways, which are not limited here.

[0117] S302, determine the phase-cutting current threshold corresponding to the current voltage parameters of the display power supply module based on the first correspondence.

[0118] After obtaining the current voltage parameters of the display power supply module, the electronic device can determine the phase-cutting current threshold corresponding to the current voltage parameters of the display power supply module based on the first correspondence relationship.

[0119] For example, if the first correspondence is stored in the form of a table, XML, or text file, the electronic device can directly look up the phase-cutting current threshold corresponding to the current voltage parameter from the first correspondence. Alternatively, if the first correspondence is stored using the aforementioned function f, the electronic device can input the current voltage parameter into function f to calculate the corresponding phase-cutting current threshold.

[0120] In some embodiments, for an electronic device whose display power supply module includes n (n is a positive integer greater than 1) power supply units, there can be at most n types of power supply groups, such as a 1-phase power supply group, a 2-phase power supply group, ..., an n-phase power supply group. The electronic device can be designed to power the display module through m (where m is a positive integer less than or equal to n) of these n power supply groups. The phase-cutting current threshold corresponding to the current voltage parameter determined by the electronic device can have m-1 values, where the j-th (j is a positive integer less than m) phase-cutting current threshold is the phase-cutting current threshold between the j-th power supply group and the (j+1)-th power supply group, denoted as I. j→j+1 .

[0121] In some embodiments, the first correspondence may be stored in the memory of the electronic device, such as flash memory, RAM, cache, processor registers, etc. The storage location of the first correspondence is not limited in the embodiments of this application.

[0122] S303, based on the relationship between the current output current of the display power supply module and the determined phase-cutting current threshold, uses the power supply group with the highest power supply efficiency to power the display module.

[0123] Once the electronic device obtains the phase-cutting current threshold corresponding to the current voltage parameters of the display power supply module, it can select the power supply group with the highest power supply efficiency to power the display module based on the relationship between the current output current of the display power supply module and the determined phase-cutting current threshold.

[0124] For example, the electronic device can adjust the current output current I of the display power supply module. out Increase to I j→j+1 In the case where j is a positive integer less than m, switch to power supply through the (j+1)th power supply group; under the current output current I of the display power supply module... out Reduce to I j→j+1 (or I) j→j+1 In the case of -ΔI), switch to power supply through the j-th power supply group.

[0125] For example, Figure 3B shows a schematic diagram of a power supply group used in the process of output current change of a display power supply module according to some embodiments of this application.

[0126] As shown in Figure 3B, the output current I of the display power supply module is... out It gradually increases from time 0, and increases to I at time t1. 1→2 Increase to I at time t2 2→3 ...increase to I at time t3 (m-2)→(m-1) Increase to I at time t4 (m-1)→m； Output current I out After increasing to its maximum value, it gradually decreases, decreasing to I at time t5. (m-1)→m -ΔI decreases to I at time t6. (m-1)→m -ΔI, ..., decrease to I at time t7. 2→3 -ΔI decreases to I at time t8. 1→2 -ΔI. The display power supply module can use the first power supply group from time 0, switch to the second power supply group at time t1, switch to the third power supply group at time t2, ..., switch to the (m-1)th power supply group at time t3, switch to the mth power supply group at time t4, switch to the (m-1)th power supply group at time t5, switch to the (m-2)th power supply group at time t6, ..., switch to the second power supply group at time t7, and switch back to the first power supply group at time t8.

[0127] For example, the electronic device can adjust the current output current I of the display power supply module. out Less than or equal to I 1→2 When j is less than m-1, the first power supply group is used; when j is less than m-1, the current output current I... out Greater than I j→j+1 And less than or equal to I j→j+2 When the current output current I is at that time, the (j+1)th power supply group is used for power supply; out Greater than I (m-1)→m At that time, the m-th power supply group is used for power supply.

[0128] For example, the electronic device can adjust the current output current I of the display power supply module. out Less than or equal to I 1→2 When j is less than m-1, the first power supply group is used; when j is less than m-1, the current output current I... out Greater than I j→j+1 And less than or equal to I j→j+2 When the current output current I is at that time, the (j+1)th power supply group is used for power supply; out Greater than I (m-1)→m At that time, the m-th power supply group is used for power supply.

[0129] For example, in the current output current I of the display power supply module outWhen the trend of change is increasing: the electronic device can maintain the current output current I of the display power supply module. out Less than or equal to I 1→2 When j is less than m-1, the first power supply group is used; when j is less than m-1, the current output current I... out Greater than I j→j+1 And less than or equal to I j→j+2 When the current output current I is at that time, the (j+1)th power supply group is used for power supply; out Greater than I (m-1)→m At that time, the m-th power supply group is used. The current output current I of the display power supply module is... out When the trend of change is decreasing: the electronic device can maintain the current output current I of the display power supply module. out Less than or equal to I 1→2 When -ΔI, the first power supply group is used; when j is less than m-1, the current output current I... out Greater than I j→j+1 -ΔI and less than or equal to I j→j+2 When -ΔI, the (j+1)th power supply group is used; at the current output current I out Greater than I (m-1)→m When -ΔI, the m-th power supply group is used.

[0130] In some embodiments, the PMIC in the display power supply module is provided with a register (hereinafter referred to as the phase-cutting current threshold register) for storing the phase-cutting current thresholds corresponding to each power supply group. The PMIC can then select the power supply group with the highest power supply efficiency to power the display module based on the relationship between the output current of the display power supply module and the respective phase-cutting current threshold registers. The electronic device can write the determined phase-cutting current thresholds into the phase-cutting current threshold registers of the PMIC, so that the PMIC can select the power supply group with the highest power supply efficiency to power the display module based on the relationship between the output current of the display power supply module and the determined phase-cutting current thresholds. Details will be described below and will not be elaborated upon here.

[0131] In some embodiments, the PMIC of the display power supply module does not have a phase-cutting current threshold register, but the PMIC can receive control signals from other modules (such as a processor) to adjust its own number of power supply phases. The electronic device can determine the number of power supply phases corresponding to the power supply group with the highest power supply efficiency based on the relationship between the output current of the display power supply module and the determined phase-cutting current threshold. Then, the processor of the electronic device can send control signals to the PMIC of the display power supply module so that the PMIC can supply power to the display module based on the number of power supply phases corresponding to the power supply group with the highest power supply efficiency. Details will be described below and will not be elaborated upon here.

[0132] Based on the above method, the phase current threshold in the power supply module of the display screen in electronic devices can be matched with the current voltage parameters of the power supply module of the display screen, which is beneficial to improving the power supply efficiency of the power supply module of the display screen.

[0133] In some embodiments, the electronic device may repeat steps S301 to S303 to ensure that when the voltage parameters of the display power supply module change, the electronic device can promptly determine the phase-cutting current threshold corresponding to the changed voltage parameters. Then, based on the phase-cutting current threshold corresponding to the changed voltage parameters and the output current of the display power supply module, the electronic device can adjust the number of power supply phases for the display module to use the power supply group with the highest power supply efficiency to power the display module.

[0134] It should be noted that the contents involved in the aforementioned steps S301 to S303 can be executed by the same module in the electronic device (e.g., the same processor, PMIC, etc.), or can be executed by different modules in concert (e.g., the processor determines the phase-cutting current threshold, and the PMIC selects the power supply group with the highest power supply efficiency to power the display module based on the phase-cutting current threshold and the current output current of the display power supply module). No limitation is made here.

[0135] The technical solution of this application will be described below with reference to the accompanying drawings, based on the different specific methods of switching the number of power supply phases in the power supply module of the display screen.

[0136] Method 1: The PMIC of the display power supply module is equipped with a phase-cutting current threshold register. The PMIC can select the power supply group with the highest power supply efficiency to power the display module based on the relationship between the current output current of the display power supply module and the phase-cutting current threshold stored in the phase-cutting current threshold register.

[0137] For example, FIG4 illustrates a process diagram of a power supply method according to some embodiments of the present application.

[0138] As shown in Figure 4, the mainboard of the electronic device includes a processor, a fuel gauge, and a display power supply module. The battery powers the display power supply module, which in turn provides ELVSS to the display module. The fuel gauge detects the battery's supply voltage (equivalent to the input voltage of the display power supply module). The display power supply module includes one or more PMICs, each containing multiple power supply units and a phase-cutting current threshold register. The PMICs in the display power supply module can adjust the phase-cutting current threshold stored in the register based on the output current I of the display power supply module. out The relationship between the power supply module and the display module is adjusted so that the power supply module can supply power to the display module through the power supply group with the highest power efficiency.

[0139] Referring again to Figure 4, the power supply method may include the following steps:

[0140] S1, the processor obtains the current input voltage V of the display power supply module from the fuel gauge. in .

[0141] During operation, the processor can obtain the battery's supply voltage from the fuel gauge and use it as the current input voltage V of the display power supply module. in This refers to the current input voltage of the PMIC in the display power supply module.

[0142] In other embodiments, the power meter can also directly measure the voltage value at the input voltage pin of the PMIC and use the measured voltage as the input voltage of the display power supply module.

[0143] S1′, the processor obtains the ELVSS or the brightness of the display screen from the display module.

[0144] The processor can obtain ELVSS (as the current output voltage of the display power supply module / PMIC in the display power supply module) from the display module, or the processor can obtain the brightness of the display screen from the display module and obtain ELVSS (as the current output voltage of the PMIC) based on the brightness-ELVSS correspondence.

[0145] For example, Table 2 shows a brightness-ELVSS correspondence.

[0146] Table 2. Correspondence between Brightness and ELVSS

[0147] As shown in Table 2, the brightness-ELVSS correspondence records the ELVSS values ​​corresponding to different brightness levels. For example, when the brightness of the display screen is L1, the ELVSS is V. E-1 With the display brightness at L2, ELVSS is V. E-2 The processor can determine the current ELVSS of the display as V based on the display's brightness (e.g., L1) from the brightness-ELVSS correspondence. E-1 This determines the current output voltage of the display power supply module to be V. E-1 .

[0148] In some embodiments, the brightness of the display screen is determined and configured by the processor based on user operations or its own operating logic. Alternatively, the processor may obtain the ELVSS or display screen brightness from its internal memory or other memory (e.g., the memory of an electronic device, memory in other processors, etc.) instead of from the display module; this is not limited to these methods.

[0149] It should be noted that step S1 and step S1' can be executed in parallel, or step S1' can be executed first or step S1 can be executed first, which is not limited here.

[0150] S2, the processor determines the phase-cutting current threshold based on the current input voltage V in , ELVSS and the first corresponding relationship.

[0151] After the processor obtains the current voltage parameters of the display power supply module (the current input voltage V in , the current output voltage V out (ELVSS)), it can determine the phase-cutting current threshold matching the current voltage parameters based on the current voltage parameters and the first corresponding relationship.

[0152] S3, the processor writes the phase-cutting current threshold into the current threshold register.

[0153] After the processor obtains the phase-cutting current threshold, it can write each phase-cutting current threshold into the corresponding phase-cutting current threshold register of the PMIC through an inter-integrated circuit (I2C) bus or other communication buses.

[0154] After writing the phase-cutting current threshold into the phase-cutting current threshold register, the PMIC can adjust the number of phases for supplying power to the display module according to the relationship between the output current I out of the PMIC and the phase-cutting current threshold in the phase-cutting current threshold register, so as to supply power to the display module with the power supply group having the highest power supply efficiency.

[0155] For example, in the case where the display power supply module is designed to supply power to the display module through m (1 < m ≤ n) of n power supply groups, the phase-cutting current threshold register can include m - 1. The jth phase-cutting current threshold register in the PMIC is used to store the phase-cutting current thresholds I j→j+1 of the jth power supply group and the j + 1th power supply group. When the current output current I out of the display power supply module increases to the value in the jth phase-cutting current threshold register, the PMIC switches to supply power to the display module with the j + 1th power supply group; when the current output current I out of the display power supply module decreases to the value in the jth phase-cutting current threshold register (or the difference between the value in the jth phase-cutting current threshold register and the hysteresis current value), the PMIC switches to supply power to the display module with the jth power supply group.

[0156] For ease of understanding, the technical solution of this application will be described below with the following scenarios: n power supply units in the display power supply module are power supply units in the same PMIC, and n power supply units are power supply units in different PMICs.

[0157] Scenario 1: The n power supply units in the display power supply module are power supply units in the same PMIC.

[0158] In some embodiments, the power supply module for the display screen of an electronic device may include a power supply interface (PMIC), which may include n power supply units corresponding to n power supply groups. The PMIC is designed to power the display module through the n power supply groups (i.e., the n power supply units can be turned on or off separately), where the j-th power supply group is the j-phase power supply group. In the above case, the PMIC may include n-1 phase-cutting current threshold registers, where the j-th phase-cutting current threshold register is used to store the phase-cutting current threshold I for switching from the j-th power supply group to the (j+1)-th power supply group. j→j+1 The PMIC can switch to powering the display module using the (j+1)th power supply group when the current output current of the display power supply module increases to the value in the j-th phase current threshold register; and switch to powering the display module using the j-th power supply group when the current output current of the display power supply module decreases to the value in the j-th phase current threshold register (or the difference between the value in the j-th phase current threshold register and the hysteresis current value).

[0159] For example, referring to Figure 5A, the power supply module for the display screen of an electronic device includes PMIC 02, phase-cut current threshold register R21 and phase-cut current threshold register R22, wherein PMIC 02 includes power supply unit P21, power supply unit P22 and power supply unit P23.

[0160] The operating logic of PMIC 02 is as follows:

[0161] When the display power supply module is powered on, PMIC 02 is powered by a single-phase power supply group (e.g., power supply unit P21 is powered, while power supply units P22 and P23 are not working).

[0162] When the output current I of the display power supply module is detected out When the current value increases to the current threshold register R21, PMIC 02 switches to power supply through a 2-phase power supply group (e.g., power supply unit P21 and power supply unit P22 are powered, and power supply unit P23 is not powered).

[0163] When the output current I of the display power supply module is detected outWhen the current value increases to the current threshold register R22, PMIC 02 switches to power supply through a 3-phase power supply group (e.g., power supply units P21, P22 and P23 are all powered).

[0164] When the output current I of the display power supply module is detected out When the current value decreases to the value in the phase-cutting current threshold register R22 (or the difference between the current value in the phase-cutting current threshold register R22 and the hysteresis current value ΔI), PMIC 02 switches to power supply through the 2-phase power supply group.

[0165] When the output current I of the display power supply module is detected out When the current value decreases to the value in the phase-cutting current threshold register R21 (or the difference between the current value in the phase-cutting current threshold register R21 and the hysteresis current value ΔI), PMIC 02 switches to power supply through a single-phase power supply group.

[0166] For PMIC 02 shown in Figure 5A, the output current I of the PMIC under different voltage parameters and with different numbers of phases in the power supply group can be obtained through theoretical calculations and experimental measurements. out The correlation between the voltage parameters and power supply efficiency is used to determine the phase-cutting current threshold under different voltage parameters, thus obtaining the aforementioned first correlation, namely, the voltage parameters of PMIC 02 and the phase-cutting current threshold I. 1→2 Phase-cutting current threshold I 2→3 The corresponding relationship. For example, referring to Figure 5B, under a certain voltage parameter, the output current I at the intersection of the power supply efficiency curve of the 1-phase power supply group of PMIC 02 and the power supply efficiency curve of the 2-phase power supply group. 1-2 It can be used as the phase-cutting current threshold I under this voltage parameter. 1→2 The output current I at the intersection of the power supply efficiency curve of the 2-phase power supply group and the power supply efficiency curve of the 3-phase power supply group 2-3 It can be used as the phase-cutting current threshold I under this voltage parameter. 2→3 .

[0167] Based on the above operating logic, the aforementioned first correspondence can be pre-stored in the electronic device, for example, in the processor or other memory of the electronic device. During the operation of the electronic device, the processor can obtain the current voltage parameters of PMIC 02 (e.g., the battery voltage obtained through a power meter (as the current input voltage of PMIC 02), obtain the screen brightness of the display from the display module, and determine the ELVSS based on the aforementioned brightness-ELVSS correspondence (or directly obtain the ELVSS from the display module) (as the current output voltage of PMIC 02). Then, the processor can use the current voltage parameters of PMIC 02 to determine the phase-cutting current threshold I that matches the current voltage parameters from the first correspondence. 1→2 Phase-cutting current threshold I 2→3 Then the phase-cutting current threshold I 1→2 Write to phase-cutting current threshold register R21, phase-cutting current threshold I 2→3 Write the current to the phase-cutting current threshold register R22. In this way, PMIC 02 can, based on the above operating logic, determine the current output current I of PMIC 02. out The relationship between the phase current thresholds stored in the phase current threshold registers R21 and R22 is used to adjust the number of phases supplying power to the display module.

[0168] In some embodiments, PMIC 02 may further include a phase-cutting current threshold register R23 (not shown) and a phase-cutting current threshold register R24 ​​(not shown), which are used to store the phase-cutting current threshold I, respectively. 1→2 The difference between the hysteresis current value ΔI and the phase-cutting current threshold I 2→3 The difference between the hysteresis current value ΔI and the output current I. PMIC 02 can output the current I... out When the current decreases to the value in the phase-cutting current threshold register R24, the system switches to power supply via the 2-phase power supply group; when the output current I... out When the current value decreases to the current value in the phase-cutting current threshold register R23, the system switches to power supply through a single-phase power supply group.

[0169] Scenario 2: The n power supply units in the display power supply module are power supply units from different PMICs.

[0170] In some embodiments, the power supply module for the display screen of an electronic device may include p PMICs, each PMIC comprising a total of n power supply units (e.g., each PMIC includes n / p power supply units). These n power supply units correspond to n power supply groups, and the PMICs are designed to power the display module using m power supply groups. The p PMICs include one master PMIC and p-1 slave PMICs. The master PMIC can send control signals (stop power supply signal, power supply signal (e.g., a signal indicating power supply using a certain number of power supply units)) to the slave PMICs via I2C or similar means. Upon receiving the control signal, each slave PMIC can turn its own power supply unit on / off according to the control signal.

[0171] In some embodiments, the main PMIC may include m-1 phase-cutting current threshold registers, wherein the j-th phase-cutting current threshold register is used to store the phase-cutting current threshold I for switching from the j-th power supply group to the (j+1)-th power supply group. j→j+1 The master PMIC can send a control signal to at least one slave PMIC corresponding to the (j+1)th power supply group when the current output current of the display power supply module (the total current of p PMICs) increases to the value in the j-th phase-cut current threshold register, so that the master PMIC and the at least one slave PMIC can use the (j+1)-th power supply group to supply power to the display module. The master PMIC can also send a control signal to at least one slave PMIC corresponding to the j-th power supply group when the current total output current of the display power supply module decreases to the value in the j-th phase-cut current threshold register (or the difference between the value in the j-th phase-cut current threshold register and the hysteresis current value), so that the master PMIC and the at least one slave PMIC can use the j-th power supply group to supply power to the display module. In some embodiments, when multiple power supply units supply power to the load, the current value output by each power supply unit is usually the same (or has small differences). The master PMIC can use the product of the current output current of one of its power supply units and the number of power supply units currently in power supply in the display power supply module as the current output current of the display power supply module.

[0172] For example, m can be equal to n, in which case all n power supply units can be turned off or on individually. For instance, referring to Figure 6A, the power supply module for the electronic device's display screen includes PMIC 03 (as the main power supply unit) and PMIC 04 (as the slave power supply unit). PMIC 03 includes power supply unit P31, power supply unit P32, phase-cut current threshold register R31, phase-cut current threshold register R32, and phase-cut current threshold register R33. PMIC 04 includes power supply unit P41 and power supply unit P42, and all power supply units P31, P32, P41, and P42 can be turned on or off independently. In the above scenario, this is equivalent to n = m = 4 and p = 2, meaning the display screen power supply module includes four power supply groups: the first to fourth power supply groups are a 1-phase power supply group, a 2-phase power supply group, a 3-phase power supply group, and a 4-phase power supply group, respectively. The phase-cut current threshold register R31 stores the phase-cut current threshold I for the first and second power supply groups. 1→2 The phase-cut current threshold register R32 is used to store the phase-cut current threshold I for the second and third power supply groups. 2→3 The phase-cut current threshold register R33 is used to store the phase-cut current threshold I for the third and fourth power supply groups. 3→4 .

[0173] The operating logic of PMIC 03 and PMIC 04 is as follows:

[0174] When the display power supply module is powered on, PMIC 03 is powered through power supply unit P31, and PMIC 04 is not powered. That is, the display power supply module is powered through a 1-phase power supply group (power supply unit P31).

[0175] PMIC 03 detects the current output current I of the display power supply module. out When the current increases to the value in the phase-cutting current threshold register R31, the power supply switches to power supply unit P31 and power supply unit P32, that is, the display power supply module is powered by a 2-phase power supply group (power supply unit P31 and power supply unit P32).

[0176] PMIC 03 detects the current output current I of the display power supply module. out When the current value increases to the current value in the phase-cutting current threshold register R32, a control signal to turn on one power supply unit is sent to PMIC 04 so that power supply unit P41 of PMIC 04 is powered and power supply unit P42 is not powered. That is, the display power supply module is powered by the three-phase power supply group (power supply unit P31, power supply unit P32 and power supply unit P41).

[0177] PMIC 03 detects the current output current I of the display power supply module. outWhen the current value increases to the current value in the phase-cutting current threshold register R33, a control signal to turn on two power supply units is sent to PMIC 04 so that power supply units P41 and P42 of PMIC 04 are powered, that is, the display power supply module is powered by a 4-phase power supply group (power supply unit P31, power supply unit P32, power supply unit P41 and power supply unit P42).

[0178] PMIC 03 detects the current output current I of the display power supply module. out When the current value decreases to the value in the phase-cutting current threshold register R33 (or the difference between the current value in the phase-cutting current threshold register R33 and the hysteresis current value ΔI), a control signal to turn on one power supply unit is sent to PMIC 04 so that power supply unit P41 of PMIC 04 is powered and power supply unit P42 is not powered, that is, the display power supply module is powered by the 3-phase power supply group.

[0179] PMIC 03 detects the current output current I of the display power supply module. out When the current value decreases to the value in the phase-cutting current threshold register R32 (or the difference between the current value in the phase-cutting current threshold register R32 and the hysteresis current value ΔI), a control signal to stop power supply is sent to PMIC 04 so that the power supply units P41 and P42 of PMIC 04 do not supply power, that is, the display power supply module is powered by the 2-phase power supply group.

[0180] PMIC 03 detects the current output current I of the display power supply module. out When the current value decreases to the value in the phase-cutting current threshold register R31 (or the difference between the current value in the phase-cutting current threshold register R31 and the hysteresis current value ΔI), the power supply unit P31 is controlled to supply power and the power supply unit P32 is not supplied power, that is, the display power supply module is powered by a 1-phase power supply group.

[0181] Based on the above operating logic, the aforementioned first correspondence can be pre-stored in the electronic device, for example, in the processor or other memory of the electronic device. During operation, the processor can determine the current voltage parameters (current input voltage V) of the display power supply module in real time. in Current output voltage V out (ELVSS)), and based on the current voltage parameters, determine the phase-cutting current threshold I corresponding to the current voltage parameters from the aforementioned first correspondence. 1→2 Phase-cutting current threshold I 2→3 and phase current threshold I 3→4 Then, the processor can determine the I... 1→2 I 2→3 and I 3→4They are respectively written into the phase-cutting current threshold register R31, the phase-cutting current threshold register R32, and the phase-cutting current threshold register R33. Secondly, PMIC 03 and PMIC 04 can adjust the number of power supply units for powering the display module based on the above operation logic, so that the display screen power supply module can power the display module through the power supply group with the highest efficiency.

[0182] Exemplarily, m can be an integer less than n, that is, at least two of the n power supply units can only be turned off or on simultaneously. For example, the power supply units in the main PMIC can be independently turned off or on, and the power supply units in each slave PMIC can only be turned off or on simultaneously. Assuming that the number of power supply units in the main PMIC and the slave PMIC is equal (both are n / p), then the m power supply groups corresponding to the display screen power supply module can be 1-phase power supply group, 2-phase power supply group,..., n / p-phase power supply group, 2n / p-phase power supply group,..., n-phase power supply group, that is, m = p - 1 + n / p. When j ≤ n / p, the j-th power supply group among the m power supply groups is the j-phase power supply group; when n / p < j ≤ m, the j-th power supply group among the m power supply groups is the (j - n / p + 1)×n / p-phase power supply group.

[0183] When j ≤ n / p, when the current I in the current output of the display screen power supply module in the main PMIC out increases to the current value in the j-th phase-cutting current threshold register (I j→j+1 ), it can control the main PMIC to supply power through j + 1 power supply units and the slave PMIC not to supply power; when the output current I of the main PMIC in the display screen power supply module out decreases to the current value in the j-th phase-cutting current threshold register (I j→j+1 )(or the current value in the j-th phase-cutting current threshold register decreases by the difference ΔI of the phase-cutting current threshold j→j+1 ), it can control the main PMIC to supply power through j power supply units and the slave PMIC not to supply power.

[0184] When n / p < j < m, when the output current I of the main PMIC in the display screen power supply module out increases to the current value in the j-th phase-cutting current threshold register (I j→j+1 ), it can control the main PMIC and j - n / p + 1 slave PMICs to supply power; when the output current I of the main PMIC in the display screen power supply module out decreases to the current value in the j-th phase-cutting current threshold register (I j→j+1 )(or the current value in the j-th phase-cutting current threshold register decreases by the difference ΔI of the phase-cutting current threshold j→j+1When -ΔI), a power supply control signal can be sent to jn / p slave PMICs so that the master PMIC and jn / p slave PMICs can be powered by all power supply units of the PMIC and the jn / p slave PMICs.

[0185] For example, referring to Figure 6B, the power supply module for the display screen of the electronic device includes PMIC 05 (as the master PMIC) and PMIC 06 (as the slave PMIC). PMIC 05 includes power supply unit P51, power supply unit P52, phase-cut current threshold register R51, and phase-cut current threshold register R52. PMIC 06 includes power supply unit P61 and power supply unit P62. Power supply units P51 and P52 can be turned on or off independently, while power supply units P61 and P62 can only be turned on or off simultaneously. In the above scenario, this is equivalent to n=4, m=3, and p=2, meaning the display screen power supply module includes three power supply groups: the first to the third power supply groups are a 1-phase power supply group, a 2-phase power supply group, and a 4-phase power supply group (i.e., (jn / p+1)×n / p=(3-4 / 2+1)×2=4). The phase-cutting current threshold register R51 is used to store the phase-cutting current threshold I for the first type of power supply group (1-phase power supply group) and the second type of power supply group (2-phase power supply group). 1→2 The phase-cut current threshold register R52 is used to store the phase-cut current threshold I for the second and third power supply groups (4-phase power supply groups). 2→3 .

[0186] The operating logic of PMIC 05 and PMIC 06 is as follows:

[0187] When the display power supply module is powered on, PMIC 05 is powered through power supply unit P51, and PMIC 06 is not powered. That is, the display power supply module is powered through a 1-phase power supply group (power supply unit P51).

[0188] PMIC 05 detects the current output current I of the display power supply module. out When the current increases to the value in the phase-cutting current threshold register R51, the power supply is switched to power supply unit P51 and power supply unit P52, that is, the display power supply module is powered by a 2-phase power supply group (power supply unit P51 and power supply unit P52).

[0189] PMIC 05 detects the current output current I of the display power supply module. outWhen the current value increases to the current value in the phase-cutting current threshold register R52, a control signal to turn on two power supply units is sent to PMIC 06 so that power supply units P61 and P62 of PMIC 06 are powered, that is, the display power supply module is powered by a 4-phase power supply group (power supply unit P51, power supply unit P52, power supply unit P61 and power supply unit P62).

[0190] PMIC 05 detects the current output current I of the display power supply module. out When the current value decreases to the value in the phase-cutting current threshold register R52 (or the difference between the current value in the phase-cutting current threshold register R52 and the hysteresis current value ΔI), a control signal to stop power supply is sent to PMIC 06 so that the power supply units P61 and P62 of PMIC 06 do not supply power, that is, the display power supply module is powered by the 2-phase power supply group.

[0191] PMIC 05 detects the current output current I of the display power supply module. out When the current value decreases to the value in the phase-cutting current threshold register R51 (or the difference between the current value in the phase-cutting current threshold register R51 and the hysteresis current value ΔI), the power supply unit P51 is controlled to supply power and the power supply unit P52 is not supplied power, that is, the display power supply module is powered by a 1-phase power supply group.

[0192] Based on the above operating logic, the aforementioned first correspondence can be pre-stored in the electronic device, for example, in the processor or other memory of the electronic device. During operation, the processor can determine the current voltage parameters (current input voltage V) of the display power supply module in real time. in Current output voltage V out (ELVSS)), and based on the current voltage parameters, determine the phase-cutting current threshold I corresponding to the current voltage parameters from the aforementioned first correspondence. 1→2 and phase current threshold I 2→3 Then, the processor can determine the I... 1→2 and I 2→3 The values ​​are written to the phase-cutting current threshold registers R51 and R52, respectively. Next, PMIC 05 and PMIC 06 can adjust the number of power supply units supplying power to the display module based on the above operating logic, so that the display power supply module can supply power to the display module through the most efficient power supply group.

[0193] Referring to Figure 7, based on the embodiments shown in Figures 4 to 6B, this application provides a power supply method. The method includes the following steps:

[0194] S701, the processor obtains the current voltage parameters of the display power supply module.

[0195] During operation, the processor of an electronic device can obtain the current voltage parameters of the display power supply module. These voltage parameters may include one or more of the input voltage and output voltage.

[0196] For example, electronic devices can measure the input and output voltages of the display power supply module using devices / modules capable of measuring voltage, such as fuel gauges / voltmeters. As another example, electronic devices can acquire the brightness of their display screen and determine the output voltage (i.e., ELVSS) of the display power supply module based on the aforementioned brightness-ELVSS correspondence. Yet another example is that electronic devices can measure the battery's supply voltage using devices / modules capable of measuring voltage, such as fuel gauges / voltmeters, and use the battery's supply voltage as the input voltage of the display power supply module.

[0197] In other embodiments, the processor of the electronic device may also obtain the current voltage parameters of the display power supply module in other ways, which are not limited here.

[0198] S702, the processor determines the phase-cutting current threshold corresponding to the current voltage parameters based on the first correspondence.

[0199] For example, the electronic device may store a first correspondence between voltage parameters and phase-cutting current thresholds. After obtaining the current voltage parameters of the display power supply module, the electronic device can determine the phase-cutting current threshold corresponding to the current voltage parameters based on the first correspondence.

[0200] In some embodiments, the power supply module for the display screen includes n power supply units, and the power supply module for the display screen is designed to supply power to the display module through m power supply groups from the n power supply groups corresponding to the n power supply units. Then, in the first correspondence, a set of voltage parameters corresponds to m-1 phase-cutting current thresholds.

[0201] S703, the processor writes the determined phase current threshold to the corresponding phase current threshold register.

[0202] After determining the phase current threshold corresponding to the current voltage parameters, the electronic device can write the determined phase current threshold into the corresponding phase current threshold register.

[0203] The S704 display power supply module uses the power supply group with the highest power supply efficiency based on the relationship between the current output current and the current values ​​in the current threshold registers of each phase.

[0204] After the phase-cutting current threshold is written into the phase-cutting current threshold register, the display power supply module can, based on its own operating logic and the relationship between the current output current and the current values ​​in each phase-cutting current threshold register, use the power supply group with the highest power supply efficiency. For details, please refer to the embodiments shown in Figures 4 to 6B above, which will not be elaborated upon here.

[0205] Based on the above method, the phase-cutting current threshold in the power supply module of the display screen in electronic devices can be matched with the voltage parameters of the power supply module of the display screen, which is beneficial to improving the power supply efficiency of the power supply module of the display screen.

[0206] Method 2: The PMIC of the display power supply module does not have a phase-cutting current threshold register. The processor in the electronic device first determines the power supply group with the highest power supply efficiency based on the relationship between the current output current of the display power supply module and the phase-cutting current threshold, and sends a control signal to the PMIC so that the PMIC can use the power supply group with the highest power supply efficiency to power the display module.

[0207] Compared to the embodiments shown in Figures 4 to 7, the PMIC of the display power supply module may not include a phase-cutting current threshold register. The PMIC of the display power supply module can receive control signals from other modules (e.g., a processor) to adjust its own power supply phase count. In this case, the processor of the electronic device can obtain the current voltage parameters and current output current of the display power supply module, and based on the relationship between the current output current and the phase-cutting current threshold corresponding to the current voltage parameters, send a control signal to the PMIC of the display power supply module, so that the display power supply module can supply power to the display module using the most efficient power supply group.

[0208] For example, Figure 8 illustrates a process diagram of a power supply method according to some embodiments of this application.

[0209] S11, the processor obtains the current input voltage V of the display power supply module from the fuel gauge. in .

[0210] During operation, the processor can obtain the battery's supply voltage from the fuel gauge and use it as the current input voltage V of the display power supply module. in For details, please refer to the aforementioned S1, which will not be elaborated upon here.

[0211] S11', the processor obtains the ELVSS or the brightness of the display screen from the display module, and the current output current I. out .

[0212] The processor can obtain ELVSS (as the current output voltage of the display power supply module / PMIC in the display power supply module) from the display module, or the processor can obtain the brightness of the display screen from the display module and obtain ELVSS (as the current output voltage of the PMIC) based on the brightness-ELVSS correspondence, and obtain the input current of the display module (i.e., the current output current I of the display power supply module). out ).

[0213] In some embodiments, the motherboard or display module of the electronic device may also be provided with a circuit, device, or module (e.g., an ammeter) for detecting current, used to detect the current output current I of the display power supply module. out and the current output current I out It is transmitted to the processor.

[0214] It should be noted that the specific details of the luminance-ELVSS correspondence and the process of determining ELVSS based on luminance can be found in the aforementioned step S1′, and will not be elaborated here.

[0215] S12, the processor is based on the current input voltage V in The phase-cutting current threshold is determined by the ELVSS and the first correspondence.

[0216] After the processor obtains the current voltage parameters of the display power supply module (current input voltage V), in Current input voltage V out After (ELVSS), the phase-cutting current threshold that matches the current voltage parameters can be determined based on the current voltage parameters and the first correspondence.

[0217] S13, the processor sends a control signal to the PMIC.

[0218] The processor can compare the current output current I out The system obtains the power supply group with the highest power supply efficiency by comparing it with the current threshold of each phase, and sends control signals to each PMIC so that the display power supply module can supply power to the display module through the power supply group with the highest power supply efficiency.

[0219] For example, in an electronic device designed to power a display module via m out of n power supply groups, the phase-cutting current threshold registers could include m-1 registers. The processor in I... out When the current is increased to the j-th phase-cutting threshold, the (j+1)-th power supply group (e.g., a y-phase power supply group) is determined to have the highest power supply efficiency. A control signal is then sent to the PMIC to enable the display power supply module to power the display module through y power supply units. The processor then... outWhen the current is reduced to the j-th phase current threshold (or the difference between the j-th phase current threshold and the hysteresis current value), the power supply efficiency of the j-th power supply group (e.g., x-phase power supply group) is determined to be the highest, and a control signal is sent to the PMIC so that the display power supply module can supply power to the display module through x power supply units.

[0220] For example, referring to FIG9, the power supply module for the display screen of the electronic device includes PMIC 07 and PMIC 08. PMIC 07 includes power supply units P71 and P72, and PMIC 08 includes power supply units P81 and P82. PMIC 07 and PMIC 08 can turn their respective power supply units on or off according to received control signals. In the above scenario, the first correspondence may include voltage parameters and phase-cutting current threshold I of the display screen power supply module. 1→2 Phase-cutting current threshold I 2→3 and phase current threshold I 3→4 The correspondence.

[0221] The processor can obtain the current voltage parameters of the display power supply module (e.g., the current input voltage V). in and the current output voltage V out and the current output current I out Then, the processor can determine the phase-cutting current threshold (e.g., I) corresponding to the current voltage parameters based on the current voltage parameters and the aforementioned first correspondence. 1→2 =100mA, I 2→3 =150mA, I 3→4 =230mA, and the hysteresis current is 5mA). And:

[0222] When the display power supply module is powered on, the processor sends a control signal to PMIC 07 to start a power supply unit and a control signal to PMIC 08 to stop the power supply unit, so that the display power supply module is powered by a single-phase power supply group.

[0223] The processor detects the current output current I of the display power supply module. out When the current is increased to 100mA, a control signal to turn on the two power supply units is sent to PMIC 07, and a control signal to stop the power supply is sent to PMIC 08, so that the display power supply module is powered by the two-phase power supply group.

[0224] The processor detects the current output current I of the display power supply module. out When the current is increased to 150mA, a control signal is sent to PMIC 07 to enable two power supply units and to PMIC 08 to enable one power supply unit, so that the display power supply module is powered by a three-phase power supply group.

[0225] The processor detects the current output current I of the display power supply module. out When the current is increased to 150mA, control signals to activate two power supply units are sent to PMIC 07 and to PMIC 08, so that the display power supply module is powered by a 4-phase power supply group.

[0226] The processor detects the current output current I of the display power supply module. out When the current is reduced to 150-5=145mA, a control signal is sent to PMIC 07 to enable two power supply units and to PMIC 08 to enable one power supply unit, so that the display power supply module is powered by a three-phase power supply group.

[0227] The processor detects the current output current I of the display power supply module. out When the current is reduced to 100-5=95mA, a control signal to turn on the two power supply units is sent to PMIC 07, and a control signal to stop the power supply is sent to PMIC 08, so that the display power supply module is powered by the two-phase power supply group.

[0228] The processor detects the current output current I of the display power supply module. out When the current is reduced to 50-5=45mA, a control signal to turn on one power supply unit is sent to PMIC 07 and a control signal to stop power supply is sent to PMIC 08 so that the display power supply module is powered by one phase power supply group.

[0229] In some embodiments, the PMIC itself may include a control unit, such as a microcontroller, which can implement the functions of the aforementioned processor. The PMIC can collect the current voltage parameters (e.g., current input voltage, current output voltage) and current output current of the display power supply module. Then, the PMIC can determine the phase-cutting current threshold that matches the current voltage parameters based on the aforementioned first correspondence. Secondly, the PMIC can use the power supply group with the highest power supply efficiency to power the display module based on the current output current and the determined phase-cutting current threshold.

[0230] For example, Figure 10 shows a schematic diagram of a power supply method according to some embodiments of this application.

[0231] Referring to Figure 10, the PMIC can internally include a voltage sampling circuit (or other specific voltage sampling module or circuit) for detecting input and output voltages, a current sampling circuit (or other specific current sampling module or circuit) for detecting output current, a control unit, and multiple power supply units. During the operation of the electronic device, the control unit in the PMIC can detect the current voltage parameters (current input voltage V) of the display power supply module through the voltage detection circuit. in Current input voltage V out ), and detect the current output current I of the display power supply module through the current sampling circuit. out .

[0232] After obtaining the current voltage parameters, the control unit can, based on the aforementioned first correspondence and the current input voltage V, in and the current input voltage V out The phase-cutting current threshold corresponding to the current voltage parameters is determined. Then, the control unit can compare the determined phase-cutting current threshold with the current output current to obtain the power supply group with the highest power supply efficiency, and send a control signal to its own power supply unit (and / or the power supply unit in other PMICs) so that the display power supply module can use the power supply group with the highest power supply efficiency to power the display module. The specific methods by which the control unit determines the phase-cutting current threshold, determines the power supply group with the highest power supply efficiency, and controls the power supply unit to use the power supply group with the highest power supply efficiency to power the display module can be referred to in the embodiments shown in Figures 3A to 9 above, and are not limited here.

[0233] It should be noted that the control unit shown in Figure 10 can refer to a power supply unit of a single PMIC, or it can be a combination of control units in multiple PMICs. That is to say, when there are multiple PMICs in the display power supply module, the aforementioned power supply method can be implemented by a control unit in one PMIC, or the aforementioned power supply method can be implemented by multiple control units working together, without limitation here.

[0234] This application also provides a computer program product that, when executed on an electronic device, enables the electronic device to implement the power supply methods provided in the foregoing embodiments.

[0235] This application also provides a readable storage medium storing one or more programs / instructions, which, when executed by an electronic device, enable the electronic device to implement the power supply methods provided in the foregoing embodiments.

[0236] This application also provides an electronic device that may include one or more processors, which can execute one or more programs / instructions in a memory, and the power supply methods provided in the foregoing embodiments.

[0237] This application also provides a chip (e.g., the PMIC in Figure 10), which includes multiple power supply units and a control unit. The control unit is used to control the multiple power supply units to supply power to the load based on the power supply methods provided in the foregoing embodiments.

[0238] Furthermore, Figure 11 shows a schematic diagram of the structure of an electronic device according to some embodiments of this application. The display power supply module in the electronic device can supply power to the display module of the electronic device based on the power supply methods provided in the foregoing embodiments.

[0239] As shown in Figure 11, the electronic device 10 may include a processor 110, a memory 120, a sensor module 130, an audio module 140, a communication module 150, a battery 160, a display power supply module 170, a display module 180, etc.

[0240] Processor 110 is typically used to control the overall operation of electronic device 10 and may include one or more processing units. For example, processor 110 may include an application processor (AP), graphics processing unit (GPU), image signal processor (ISP), video processing unit (VPU) controller, memory, video codec, digital signal processor (DSP), baseband processor, and / or neural network processing unit (NPU), microcontroller, etc. Different processing units may be independent devices or integrated into one or more processors.

[0241] In some embodiments, the processor 110 may be used to control the display power supply module to supply power to the display module 180 based on the data collected by the sensor module 130 (e.g., the current voltage parameters of the display power supply module 170, the current output current of the display power supply module 170, etc.) using the power supply group with the highest power supply efficiency.

[0242] The memory 120 can be used to store computer executable program code, which includes instructions. The processor 110 executes various functional applications and data processing of the electronic device 10 by running the instructions stored in the memory 120. The memory 120 may include a program storage area and a data storage area. The program storage area may store the operating system, applications required for at least one function (e.g., image display function, video playback function), etc. The data storage area may store data created or needed to be accessed during the use of the electronic device 10, such as the aforementioned first correspondence, brightness-ELVSS correspondence, etc. In addition, the memory 120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, universal flash storage (UFS), etc.

[0243] The sensor module 130 may include sensors for detecting the operating and usage status of the electronic device 10. These include, but are not limited to, sensors for detecting the voltage of each module in the electronic device 10 and sensors for detecting the current of each module in the electronic device 10.

[0244] The audio module 140 may include a speaker, a microphone, etc., for implementing audio functions.

[0245] The communication module 150 may include a wireless communication module. The wireless communication module can provide solutions for wireless communication applications on the electronic device 10, including wireless local area networks (WLANs) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), and infrared (IR) technologies. The wireless communication module may be one or more devices integrating at least one communication processing module. The wireless communication module receives electromagnetic waves via an antenna, modulates and filters the electromagnetic wave signals, and sends the processed signal to the processor 110. The wireless communication module can also receive signals to be transmitted from the processor 110, modulate and amplify them, and then convert them into electromagnetic waves for radiation via the antenna.

[0246] Battery 160 can be used to provide power to various modules of an electronic device, such as providing input voltage to the display power supply module 170.

[0247] The display power supply module 170 may include q (q is a positive integer) PMICs, and each PMIC may include one or more power supply units. The display power supply module 170 can be used to supply power to the display module based on the power supply method provided in the embodiments of this application.

[0248] Display module 180 may include one or more displays, DDIC, etc. In some embodiments, display module 180 may feed back parameters such as display brightness, input current, and ELVSS to the processor.

[0249] It should be noted that the structure of the electronic device 10 shown in the embodiments of this application does not constitute a specific limitation on the electronic device 10. In other embodiments of this application, the electronic device 10 may include more or fewer components than shown, or combine some components, or split some components, or have different component arrangements. The components shown may be implemented in hardware, software, or a combination of software and hardware.

[0250] It should be noted that electronic device 10 can be any electronic device including a display module and a power supply module for the display screen, including but not limited to user equipment (UE), mobile station (MS), and mobile terminal (MT). For example, electronic device can be a mobile phone, wearable device, tablet computer, laptop computer, virtual reality (VR) device, augmented reality (AR) device, industrial control device, vehicle-mounted system, terminal device in smart grid, terminal device in transportation safety, terminal device in smart city, etc.

[0251] It should be noted that in the embodiments of this application, "or" describes the relationship between related objects, indicating that there can be two relationships. For example, A or B can mean either A or B, where A or B can be singular or plural.

[0252] It should be noted that the term "connection" used in the embodiments of this application describes the connection relationship between two objects and can represent two kinds of connection relationships. For example, the connection between A and B can represent two situations: A is directly connected to B, and A is connected to B through C.

[0253] It should be noted that in the embodiments of this application, terms such as "for example," "in some embodiments," "in another embodiment," "in yet another embodiment," and "exemplarily" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as an "example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of the term "example" is intended to present concepts in a concrete manner.

[0254] It should be noted that the terms "first" and "second" used in the embodiments of this application are only used for descriptive purposes and should not be construed as indicating or implying relative importance or order. The term "equal to" in the embodiments of this application can be used with "greater than" to apply to technical solutions used when "greater than," and can also be used with "less than" to apply to technical solutions used when "less than." It should be noted that when "equal to" is used with "greater than," it is not used with "less than," and vice versa.

[0255] In the accompanying drawings, some structural or methodological features may be shown in a specific arrangement and / or order. However, it should be understood that such a specific arrangement and / or order may not be necessary. Rather, in some embodiments, these features may be arranged in a manner and / or order different from that shown in the illustrative drawings. Furthermore, the inclusion of structural or methodological features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features may be omitted or may be combined with other features.

[0256] It should be noted that in the examples and description of this patent, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A power supply method applied to an electronic device, characterized by, The electronic device includes a power supply module, which includes multiple power supply units; the method includes: The load of the electronic device is powered by a first number of the aforementioned power supply units; When the voltage parameter of the power supply module is a first voltage parameter, if the current output by the power supply module to the load changes to a first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to the second number, wherein the voltage parameter of the power supply module includes at least one of the input voltage and output voltage of the power supply module; When the voltage parameter of the power supply module is the second voltage parameter, if the current output by the power supply module to the load changes to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to the second number. The second voltage parameter is different from the first voltage parameter, and the second phase current threshold is different from the first phase current threshold.

2. The method of claim 1, wherein, The second quantity is greater than the first quantity; detecting that the current output by the power supply module to the load changes to the first phase-cutting current threshold includes: detecting that the current output by the power supply module to the load increases to the first phase-cutting current threshold.

3. The method of claim 2, wherein, When the voltage parameter of the power supply module is the first voltage parameter and the current output by the power supply module to the load is less than the first phase-cutting current threshold, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency using the second number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the first voltage parameter and the current output by the power supply module to the load is greater than the first phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency using the first number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the second voltage parameter and the current output by the power supply module to the load is less than the second phase-cutting current threshold, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency using the second number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the second voltage parameter and the current output by the power supply module to the load is greater than the second phase-cutting current threshold, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency using the first number of power supply units to supply power to the load.

4. The method of claim 1, wherein, The second quantity is less than the first quantity; The detection that the current output by the power supply module to the load changes to a first phase-cutting current threshold includes: The current output by the power supply module to the load is detected to decrease to the first phase-cutting current threshold.

5. The method according to claim 4, characterized in that, When the voltage parameter of the power supply module is the first voltage parameter, the current output by the power supply module to the load is less than the first phase-cutting current threshold, or the current output by the power supply module to the load is less than the sum of the first phase-cutting current threshold and the first current value, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency using the first number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the first voltage parameter, the current output by the power supply module to the load is greater than the first phase-cutting current threshold, or the current output by the power supply module to the load is greater than the sum of the first phase-cutting current threshold and the first current value, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency using the second number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the second voltage parameter, the current output by the power supply module to the load is less than the second phase-cutting current threshold, or the current output by the power supply module to the load is less than the sum of the second phase-cutting current threshold and the first current value, the power supply efficiency of the power supply module using the second number of power supply units to supply power to the load is greater than the power supply efficiency using the first number of power supply units to supply power to the load. When the voltage parameter of the power supply module is the second voltage parameter, the current output by the power supply module to the load is greater than the second phase-cutting current threshold, or the current output by the power supply module to the load is greater than the sum of the second phase-cutting current threshold and the first current value, the power supply efficiency of the power supply module using the first number of power supply units to supply power to the load is greater than the power supply efficiency using the second number of power supply units to supply power to the load.

6. The method according to claim 1, characterized in that, The first phase-cutting current threshold is determined based on the first voltage parameter and the first correspondence, and the second phase-cutting current threshold is determined based on the second voltage parameter and the first correspondence, wherein the first correspondence is the relationship between the voltage parameter of the power supply module and the phase-cutting current threshold.

7. The method according to claim 6, characterized in that, The power supply module includes three power supply units, and the three power supply units are disposed in a first power management integrated circuit; when the voltage parameter of the power supply module is a first voltage parameter, if it is detected that the current output by the power supply module to the load changes to a first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to a second number, specifically including: Based on the first voltage parameter, the third phase current threshold and the fourth phase current threshold corresponding to the first voltage parameter are obtained from the first correspondence, wherein the fourth phase current threshold is greater than the third phase current threshold. When the first phase-cutting current threshold is the third phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 1 to 2. Alternatively, if the first phase-cutting current threshold is the fourth phase-cutting current threshold, and the current output by the power supply module to the load is detected to increase to the first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 3. Alternatively, if the first phase current threshold is the third phase current threshold or the first phase current threshold is the difference between the third phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 1. Alternatively, if the first phase current threshold is the fourth phase current threshold or the first phase current threshold is the difference between the fourth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 3 to 2.

8. The method according to claim 7, characterized in that, When the voltage parameter of the power supply module is the second voltage parameter, and the current output by the power supply module to the load changes to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to the second number, specifically including: Based on the second voltage parameter, the fifth phase current threshold and the sixth phase current threshold corresponding to the second voltage parameter are obtained from the first correspondence. The sixth phase current threshold is greater than the fifth phase current threshold. The sixth phase current threshold is different from the fourth phase current threshold, and the fifth phase current threshold is different from the third phase current threshold. When the second phase-cutting current threshold is the fifth phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 1 to 2. Alternatively, if the second phase-cutting current threshold is the sixth phase-cutting current threshold, and the current output by the power supply module to the load is detected to increase to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 3. Alternatively, if the second phase current threshold is the fifth phase current threshold or the second phase current threshold is the difference between the fifth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 1. Alternatively, if the second phase current threshold is the sixth phase current threshold or the second phase current threshold is the difference between the sixth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 3 to 2.

9. The method according to claim 6, characterized in that, The power supply module includes a first power supply unit, a second power supply unit, a third power supply unit, and a fourth power supply unit. The first and second power supply units are disposed within a second power management integrated circuit, and the third and fourth power supply units are disposed within a third power management integrated circuit. When the voltage parameter of the power supply module is a first voltage parameter, and the current output by the power supply module to the load changes to a first phase-cutting current threshold, the number of power supply units supplying power to the load by the power supply module is switched from the first number to a second number. Specifically, this includes: Based on the first voltage parameter, the seventh phase current threshold and the eighth phase current threshold corresponding to the first voltage parameter are obtained from the first correspondence, wherein the eighth phase current threshold is greater than the seventh phase current threshold. When the first phase-cutting current threshold is the seventh phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 1 to 2. Alternatively, if the first phase-cutting current threshold is the eighth phase-cutting current threshold, and the current output by the power supply module to the load is detected to increase to the first phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 4. Alternatively, if the first phase current threshold is the seventh phase current threshold or the first phase current threshold is the difference between the seventh phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 1. Alternatively, if the first phase current threshold is the eighth phase current threshold or the first phase current threshold is the difference between the eighth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the first phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 4 to 2.

10. The method according to claim 9, characterized in that, When the voltage parameter of the power supply module is the second voltage parameter, and the current output by the power supply module to the load changes to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from the first number to the second number, specifically including: Based on the first voltage parameter, the ninth phase current threshold and the tenth phase current threshold corresponding to the first voltage parameter are obtained from the first correspondence, wherein the tenth phase current threshold is greater than the ninth phase current threshold; When the second phase-cutting current threshold is the ninth phase-cutting current threshold, if it is detected that the current output by the power supply module to the load increases to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 1 to 2. Alternatively, if the second phase-cutting current threshold is the tenth phase-cutting current threshold, and the current output by the power supply module to the load is detected to increase to the second phase-cutting current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 4. Alternatively, if the second phase current threshold is the ninth phase current threshold or the second phase current threshold is the difference between the ninth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 2 to 1. Alternatively, if the second phase current threshold is the tenth phase current threshold or the second phase current threshold is the difference between the tenth phase current threshold and the first current value, and the current output by the power supply module to the load is detected to decrease to the second phase current threshold, the number of power supply units supplied by the power supply module to the load is switched from 4 to 2.

11. The method according to claim 9 or 10, characterized in that, The step of changing the number of power supply units that supply power to the load from one to two specifically includes: changing the power supply unit that supplies power to the load from the first power supply unit to the first power supply unit and the second power supply unit; The step of changing the number of power supply units that supply power to the load from 2 to 4 specifically includes: changing the power supply units that supply power to the load from the first power supply unit and the second power supply unit to the first power supply unit, the second power supply unit, the third power supply unit, and the fourth power supply unit.

12. The method according to any one of claims 1 to 11, characterized in that, The load is the display screen of the electronic device, and the output voltage of the power supply module is used to provide an emitter layer voltage source for the display screen.

13. The method according to claim 12, characterized in that, The output voltage of the power supply module is determined based on the brightness of the display screen and a second correspondence, wherein the second correspondence is the correspondence between the voltage value of the emitter voltage source of the display screen and the brightness of the display screen.

14. A power supply method, characterized in that, Applied to electronic devices, characterized in that the electronic devices include a power supply module, the power supply module including multiple power supply units; the method includes: Obtain a third voltage parameter of the power supply module, wherein the voltage parameter of the power supply module includes at least one of the input voltage and output voltage of the power supply module; Based on the first correspondence, at least one phase-cutting current threshold corresponding to the third voltage parameter is determined, wherein the first correspondence is the correspondence between the voltage parameter of the power supply module and the phase-cutting current threshold; Based on the relationship between the first current output by the power supply module to the load in the electronic device and the at least one phase-cutting current threshold, a third number of the power supply units are used to supply power to the load. When the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is the first current, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is higher than the power supply efficiency of using other numbers of power supply units to supply power to the load.

15. The method according to claim 14, characterized in that, The at least one phase-cutting current threshold includes an eleventh phase-cutting current threshold; When the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is greater than the eleventh phase current threshold, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is greater than the power supply efficiency using the fourth number of power supply units to supply power to the load, wherein the fourth number is less than the third number. When the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is less than the eleventh phase current threshold, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is less than the power supply efficiency of using the fourth number of power supply units to supply power to the load. The method of supplying power to the load using a third number of power supply units based on the relationship between the first current output by the power supply module to the load in the electronic device and the at least one phase-cutting current threshold specifically includes: detecting that the first current increases to the eleventh phase-cutting current threshold, and supplying power to the load using the third number of power supply units.

16. The method according to claim 14, characterized in that, The relationship of the at least one phase-cutting current threshold includes the twelfth phase-cutting current threshold; When the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is greater than the twelfth phase current threshold, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is less than the power supply efficiency using the fifth number of power supply units to supply power to the load, wherein the fifth number is greater than the third number. When the voltage parameter of the power supply module is the third voltage parameter and the current output by the power supply module to the load is less than the twelfth phase current threshold, the power supply efficiency of the power supply module using the third number of power supply units to supply power to the load is greater than the power supply efficiency of using the fifth number of power supply units to supply power to the load. The method of supplying power to the load using a third number of power supply units based on the relationship between the first current output by the power supply module to the load in the electronic device and the at least one phase-cutting current threshold specifically includes: detecting that the first current decreases to the twelfth phase-cutting current threshold or the first current decreases to the difference between the twelfth phase-cutting current threshold and the third current value, and supplying power to the load using the third number of power supply units.

17. An electronic device, characterized in that, include: One or more processors are configured to perform the power supply method as described in any one of claims 1 to 13.

18. A readable storage medium, characterized in that, The readable storage medium includes instructions that, when executed by an electronic device, cause the electronic device to implement the power supply method according to any one of claims 1 to 13.

19. A chip, characterized in that, The chip includes a control unit, a voltage sampling circuit, a current sampling circuit, and the power supply module; The voltage sampling circuit is used to collect the first voltage parameter or the second voltage parameter; The current sampling circuit is used to collect the current output by the power supply module to the load; The control unit is used to perform the power supply method according to any one of claims 1 to 13.

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