Power driving circuit, control method and electronic equipment

Abstract

The invention discloses a power driving circuit, a control method and electronic equipment, and belongs to the technical field of terminals. The power supply driving circuit provided by the embodiment of the invention comprises at least two power supply driving ICs, the power supply input end of each power supply driving IC is electrically connected with a power supply, and the first power supply output end of each power supply driving IC is electrically connected with the positive voltage output end of the power supply driving circuit. A second power supply output end of each power supply driving IC is electrically connected with a negative voltage output end of the power supply driving circuit; wherein the positive pressure output end is used for outputting a positive pressure signal, and the negative pressure output end is used for outputting and providing a negative pressure signal.

Description

Technical Field

[0001] This application belongs to the technical field of terminals, and particularly relates to a power supply driving circuit, a control method, and an electronic device. Background Art

[0002] Generally, a power supply driving integrated circuit (IC) can be provided in an electronic device. The power input terminal of the power supply driving IC is electrically connected to the battery of the electronic device, and the power output terminal of the power supply driving IC is electrically connected to the load (such as a display screen, a flash lamp, etc.) of the electronic device. In this way, the electronic device can process the voltage signals (such as positive voltage and negative voltage signals) output by the battery through the power supply driving IC, and output positive voltage signals and negative voltage signals with currents suitable for the load to the load.

[0003] However, in order to enable the above power supply driving IC to output positive voltage signals and negative voltage signals with currents suitable for the load, the maximum current magnitudes of the positive voltage signals and negative voltage signals that the power supply driving IC can output are usually large. Therefore, it may cause low utilization rate of the power supply driving IC. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide a power supply driving circuit, a control method, and an electronic device, which can solve the problem of low utilization rate of the power supply driving IC of the electronic device.

[0005] In a first aspect, the embodiments of this application provide a power supply driving circuit, which includes: at least two power supply driving ICs. The power input terminal of each power supply driving IC is electrically connected to a power supply. The first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal of the power supply driving circuit, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal of the power supply driving circuit. Among them, the positive voltage output terminal is used to output positive voltage signals, and the negative voltage output terminal is used to output negative voltage signals.

[0006] In a second aspect, the embodiments of this application provide a control method, which is applied to the power supply driving circuit as described in the first aspect. The method includes: determining a first load to be powered from at least one load of the electronic device; obtaining the magnitude of the required current of the first load; and controlling the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and controlling the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load according to the magnitude of the required current.

[0007] In a third aspect, an embodiment of the present application provides a control device, which is applied to the electronic device as in the first aspect. The control device includes: a determination module, an acquisition module, and a processing module. Among them, the determination module is configured to determine a first load to be powered from at least one load of the electronic device. The acquisition module is configured to acquire the magnitude of the required current of the first load determined by the determination module. The processing module is configured to control the positive voltage output terminal of the power supply drive circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply drive circuit to output a negative voltage signal to the first load.

[0008] In a fourth aspect, an embodiment of the present application provides an electronic device, including the power supply drive circuit as in the first aspect.

[0009] In a fifth aspect, an embodiment of the present application provides an electronic device, which includes a processor and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method as in the second aspect are implemented.

[0010] In a sixth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method as in the second aspect are implemented.

[0011] In a seventh aspect, an embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run a program or instruction to implement the method as in the second aspect.

[0012] In an eighth aspect, an embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement the method as in the second aspect.

[0013] In the embodiment of the present application, the power supply driving circuit includes at least two power supply driving ICs. The power input terminal of each power supply driving IC is electrically connected to the power supply. The first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal of the power supply driving circuit, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal of the power supply driving circuit. Wherein, the positive voltage output terminal is used to output a positive voltage signal, and the negative voltage output terminal is used to output a negative voltage signal. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal, that is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the positive voltage output terminal can output is relatively large, which improves the utilization efficiency of the power supply driving IC. And the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the negative voltage output terminal can output is relatively large. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load. And, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the output positive voltage signal and negative voltage signal is several times that of a single power supply driving IC with a relatively small maximum current magnitude of the output positive voltage signal and negative voltage signal, that is to say, the utilization rate of the power supply driving IC is improved. The cost of a single power supply driving IC with a relatively large maximum current magnitude of the output positive voltage signal and negative voltage signal is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the output positive voltage signal and negative voltage signal. Therefore, the cost of the power supply driving circuit can be reduced. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load, the cost of the power supply driving circuit can be reduced.

[0014] In the embodiment of the present application, the power supply driving circuit can determine a first load to be powered from at least one load of the electronic device, and obtain the magnitude of the required current of the first load. Thus, the power supply driving circuit can control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal, that is to say, the maximum current magnitude of the positive voltage signal that can be output by the positive voltage output terminal of the power supply driving circuit can be the sum of the maximum current magnitudes of the positive voltage signals that can be output by the first power output terminals of the at least two power supply driving ICs, that is, the maximum current magnitude that can be output by the positive voltage output terminal is relatively large, and the maximum current magnitude of the negative voltage signal that can be output by the negative voltage output terminal of the power supply driving circuit can be the sum of the maximum current magnitudes of the negative voltage signals that can be output by the second power output terminals of the at least two power supply driving ICs, that is, the maximum current magnitude that can be output by the negative voltage output terminal is relatively large. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal whose currents are suitable for the load to the load, improving the utilization efficiency of the power supply driving IC; and furthermore, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is several times the cost of a single power supply driving IC with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output, that is to say, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output, therefore, the cost of the power supply driving circuit can be reduced. And furthermore, since the power supply driving circuit can determine a first load to be powered from at least one load of the electronic device, and control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load, that is to say, the power supply driving circuit can supply power to the first load to be powered, rather than supplying power to all the loads of the electronic device, therefore, the power consumption of the power supply driving circuit can be saved. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal whose currents are suitable for the load to the load, the cost of the power supply driving circuit can be reduced, and the power consumption of the power supply driving circuit can be saved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a circuit schematic diagram of a power supply driving IC and a load in the related art;

[0016] Figure 2 is one of the circuit structure schematic diagrams of the power supply driving circuit provided by the embodiment of the present application;

[0017] Figure 3 It is the second schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0018] Figure 4 It is the third schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0019] Figure 5 It is the fourth schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0020] Figure 6 It is the fifth schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0021] Figure 7 It is the sixth schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0022] Figure 8 It is the seventh schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0023] Figure 9 It is the eighth schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0024] Figure 10 It is the schematic diagram of the circuit framework of the power supply driving circuit provided by the embodiment of the present application;

[0025] Figure 11 It is the ninth schematic diagram of the circuit structure of the power supply driving circuit provided by the embodiment of the present application;

[0026] Figure 12 It is the schematic diagram of the process of the control method provided by the embodiment of the present application;

[0027] Figure 13 It is the schematic diagram of the structure of the control device provided by the embodiment of the present application;

[0028] Figure 14 It is the first schematic diagram of the hardware structure of the electronic device provided by the embodiment of the present application;

[0029] Figure 15 It is the second schematic diagram of the hardware structure of the electronic device provided by the embodiment of the present application.

[0030] Reference numerals:

[0031] 11 - Power driving IC, 111 - Power input terminal, 1111 - First power input terminal, 1112 - Second power input terminal, 112 - First power output terminal, 113 - Second power output terminal, 114 - Second control terminal, 12 - Power supply, 13 - Positive voltage output terminal, 14 - Negative voltage output terminal, 15 - Third capacitor, 151 - First inductor, 152 - Second inductor, 16 - First capacitor, 17 - Second capacitor, 18 - First diode, 19 - Second diode, 20 - Control chip, 21 - Load, 211 - Positive voltage input terminal, 212 - Negative voltage input terminal, 22 - Switch, 221 - First input terminal, 222 - Second input terminal, 223 - Power output unit 223, 2231 - First output terminal, 2232 - First switching unit, 2233 - Second output terminal, 2234 - Second switching unit, 224 - First control terminal. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0033] The terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0034] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be a communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] The following will describe in detail the power driving circuit, control method, and electronic device provided by the embodiments of the present application with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0037] Generally, a power driving integrated circuit (IC) can be provided in an electronic device. The power input terminal of the power driving IC is electrically connected to the battery of the electronic device, and the power output terminal of the power driving IC is electrically connected to the load (such as a display screen, a flash lamp, etc.) of the electronic device. In this way, the electronic device can process the voltage signals (such as positive voltage and negative voltage signals) output by the battery through the power driving IC and output positive voltage signals and negative voltage signals suitable for the load to the load.

[0038] For example, as Figure 1 shown, two power driving ICs, namely power driving IC 1 and power driving IC 2, can be provided in the electronic device. The power driving IC 1 is electrically connected to the outer screen, and the power driving IC 2 is electrically connected to the inner screen. Thus, the power driving IC 1 can process the voltage signals (such as positive voltage signals and negative voltage signals) output by the battery and output a positive voltage signal V01 and a negative voltage signal V02 to the outer screen, and the power driving IC 2 can process the voltage signals (such as positive voltage signals and negative voltage signals) output by the battery and output a positive voltage signal V03 and a negative voltage signal V04 to the inner screen.

[0039] However, in order for the above power driving IC to output positive voltage signals and negative voltage signals suitable for the load to the load, the maximum current magnitudes of the positive voltage signals and negative voltage signals that the power driving IC can output are usually relatively large. For example, the maximum current magnitudes of the positive voltage signals and negative voltage signals that the power driving IC 1 and the power driving IC 2 can output are usually relatively large, and there is a one-to-one correspondence between the power driving IC and the load. When IC1 is working, IC2 is not working, and the utilization rate of the power driving IC is relatively low. Moreover, the cost of a power driving IC that can output positive voltage signals and negative voltage signals with a relatively large maximum current magnitude is several times (such as 3 to 5 times) the cost of a power driving IC that can output positive voltage signals and negative voltage signals with a relatively small maximum current magnitude. Therefore, it may lead to low utilization rate and high cost of the power driving IC.

[0040] To solve the above problems, an embodiment of the present application provides a power supply driving circuit. Figure 2 The structural schematic diagram of the power supply driving circuit provided by the embodiment of the present application is shown. As Figure 2 shown, the power supply driving circuit provided by the embodiment of the present application may include: at least two power supply driving ICs 11. The power input terminal 111 of each power supply driving IC 11 is electrically connected to the power supply 12. The first power output terminal 112 of each power supply driving IC 11 is electrically connected to the positive voltage output terminal 13 of the power supply driving circuit. The second power output terminal 113 of each power supply driving IC 11 is electrically connected to the negative voltage output terminal 14 of the power supply driving circuit. Wherein, the positive voltage output terminal 13 is used to output a positive voltage signal, and the negative voltage output terminal 14 is used to output a negative voltage signal.

[0041] In some embodiments of the present application, the above-mentioned power supply driving IC 11 is used to process the voltage signal (such as a positive voltage signal and a negative voltage signal) output by the power supply 12 to obtain a signal whose current matches the current required by the load. The power supply driving IC 11 may be a display power supply driving IC, for example, it may be an Organic Light-Emitting Diode (OLED) power supply driving IC. Of course, the power supply driving IC 11 may also be other driving ICs, and the embodiments of the present application do not limit this.

[0042] In some embodiments of the present application, the above-mentioned at least two power supply driving ICs 11 may include two power supply driving ICs 11 or three power supply driving ICs 11.

[0043] It should be noted that Figure 2 the number of the at least two power supply driving ICs 11 is schematically shown as two. In actual applications, the number of the at least two power supply driving ICs 11 may be any number.

[0044] For example, as Figure 3 shown, the above-mentioned power supply driving circuit may include: at least two power supply driving ICs 11, such as Figure 3 the three power supply driving ICs 11 shown in

[0045] In some embodiments of the present application, the power input terminal 111 of each power driving IC 11 may be directly electrically connected to the power supply 12, or the power input terminal 111 of each power driving IC 11 may be electrically connected to the power supply 12 through a boost circuit. The number of power input terminals 111 of each power driving IC 11 may be at least one.

[0046] In some examples, in combination with Figure 2 , such as Figure 4 shown, each power input terminal 111 includes a first power input terminal 1111 and a second power input terminal 1112. The power driving circuit provided by the embodiments of the present application may further include: a third capacitor 15, the input terminal of the third capacitor 15 is electrically connected to the power supply 12, the input terminal of the third capacitor 15 is also electrically connected to each first power input terminal 1111, and the input terminal of the third capacitor 15 is also electrically connected to each second power input terminal 1112 through a first inductor 151.

[0047] Optionally, the above-mentioned first power input terminal 1111 may specifically be the Vin terminal, and the above-mentioned second power input terminal 1112 may specifically be the SW terminal. Of course, the first power input terminal 1111 and the second power input terminal 1112 may also be other terminals, and the embodiments of the present application do not limit this.

[0048] Optionally, the above-mentioned third capacitor 15 is used to filter and regulate the voltage signal output by the power supply 12.

[0049] Optionally, the third capacitor 15 may include a group of input capacitors, and the capacitors in the group of input capacitors are connected in parallel. It should be noted that Figure 4 is illustrated by two capacitors in the group of input capacitors. In practical applications, those skilled in the art can select the number of capacitors included in the group of input capacitors according to needs, and the embodiments of the present application do not limit this.

[0050] Optionally, the input terminal of the above-mentioned third capacitor 15 is also electrically connected to each second power input terminal 1112 through a first inductor 151, which can be understood as: a first inductor 151 is provided on the path where the input terminal of the third capacitor 15 is connected to each second power input terminal 1112, and the number of the first inductors 151 may be at least two, that is to say, the number of the first inductors 151 may be the same as the number of at least two power driving ICs 11.

[0051] It can be understood that at least two first inductors 151 and the third capacitor 15 can form a boost circuit, so that the voltage signal output by the power supply 12 can be boosted through the boost circuit.

[0052] Optionally, in combination with Figure 4, the ground terminal of each power driving IC 11 can also be grounded through a second inductor 152.

[0053] Thus, it can be known that since the power driving circuit can further include a third capacitor, the input end of the third capacitor is electrically connected to each second power input end through a first inductor. In this way, on the one hand, the voltage signal output by the power supply can be boosted through the boosting circuit composed of the first inductor and the third capacitor, so that the power driving IC can input a voltage signal with a voltage meeting the requirements. On the other hand, only one set of input capacitors (i.e., the third capacitor) needs to be provided to filter and regulate the voltage signals input to at least two power driving ICs, without separately providing one set of input capacitors for each power driving IC. Therefore, the number of capacitors in the power driving circuit can be reduced, thereby saving costs and reducing the layout difficulty of the PCB board.

[0054] In some embodiments of the present application, the above-mentioned first power output end 112 can be the Vout+ end, and the first power output end 112 is used to output a positive voltage signal. The above-mentioned second power output end 113 can be the Vout- end, and the second power output end 113 is used to output a negative voltage signal.

[0055] It can be understood that each power driving IC 11 includes a first power output end 112 and a second power output end 113.

[0056] In some embodiments of the present application, the above-mentioned positive voltage output end 13 can be directly connected to the positive voltage input end of the load, or can be connected to the positive voltage input end of the load through a switching component (such as the switching switch in the following embodiments); the above-mentioned negative voltage output end 14 can be directly connected to the negative voltage input end of the load, or can be connected to the negative voltage input end of the load through a switching component (such as the switching switch in the following embodiments).

[0057] In some embodiments of the present application, the above-mentioned load can include at least one of the following: a display screen, a flash light, etc. Of course, the load can also include other components, and the embodiments of the present application do not limit this.

[0058] Among them, the display screen can be a non-foldable screen or a foldable screen, the display screen can be an inner screen or an outer screen, and the number of the display screens can be at least one.

[0059] In some embodiments of the present application, the number of the above-mentioned loads can be at least one.

[0060] Wherein, when the number of loads is at least two, the above-mentioned positive pressure output terminal 13 can be electrically connected to the positive pressure input terminal of the load through a switching component (such as a switching switch in the following embodiments); the above-mentioned negative pressure output terminal 14 can be electrically connected to the negative pressure input terminal of the load through a switching component (such as a switching switch in the following embodiments).

[0061] In some embodiments of the present application, in combination with Figures 2 to 4 , as Figure 5 shown, the power supply driving circuit provided by the embodiments of the present application further includes: a first capacitor 16, an input end of the first capacitor 16 is electrically connected to each first power output end 112, and an output end of the first capacitor 16 is grounded; a second capacitor 17, an input end of the second capacitor 17 is electrically connected to each second power output end 113, and an output end of the second capacitor 17 is grounded.

[0062] Optionally, the above-mentioned first capacitor 16 is used for filtering and voltage stabilizing the positive pressure signal and negative pressure signal output by the power supply driving IC 11.

[0063] Optionally, the first capacitor 16 may include a group of input capacitors, and the capacitors in the group of input capacitors are connected in parallel. It should be noted that Figure 5 it is illustrated that the group of input capacitors includes two capacitors. In practical applications, those skilled in the art can select the number of capacitors included in the group of input capacitors according to requirements, and the embodiments of the present application do not limit this.

[0064] Optionally, the above-mentioned second capacitor 17 is used for filtering and voltage stabilizing the positive pressure signal and negative pressure signal output by the power supply driving IC 11.

[0065] Optionally, the second capacitor 17 may include a group of input capacitors, and the capacitors in the group of input capacitors are connected in parallel. It should be noted that Figure 5 it is illustrated that the group of input capacitors includes two capacitors. In practical applications, those skilled in the art can select the number of capacitors included in the group of input capacitors according to requirements, and the embodiments of the present application do not limit this.

[0066] It can be seen that since the power supply driving circuit may further include a first capacitor, the input end of the first capacitor is electrically connected to each first power output end. That is to say, only one set of input capacitors (i.e., the first capacitor) is needed to filter and regulate the positive voltage signals output from at least two first power output ends, without the need to separately set a set of input capacitors for each first power output end. Therefore, the number of capacitors in the power supply driving circuit can be reduced. And since the power supply driving circuit may further include a second capacitor, the input end of the second capacitor is connected to each second power output end. That is to say, only one set of input capacitors (i.e., the first capacitor) is needed to filter and regulate the negative voltage signals output from at least two second power output ends, without the need to separately set a set of input capacitors for each second power output end. Therefore, the number of capacitors in the power supply driving circuit can be reduced. Thus, the cost can be saved and the layout difficulty of the PCB board can be reduced.

[0067] In some embodiments of the present application, in combination with Figures 2 to 5 , such as Figure 6 shown, the power supply driving circuit provided by the embodiments of the present application may further include: at least two first diodes 18, the positive electrode of each first diode 18 is respectively electrically connected to a first power output end 112, and the negative electrode of each first diode 18 is electrically connected to the positive voltage output end 13; at least two second diodes 19, the positive electrode of each second diode 19 is respectively electrically connected to a second power output end 113, and the negative electrode of each second diode 19 is electrically connected to the negative voltage output end 14.

[0068] In some examples, the above-mentioned first diode 18 may be a Schottky diode. Of course, the first diode 18 may also be other diodes, and the embodiments of the present application do not limit this.

[0069] In some examples, the above-mentioned second diode 19 may be a Schottky diode. Of course, the second diode 19 may also be other diodes, and the embodiments of the present application do not limit this.

[0070] In the embodiments of the present application, since the current of the positive voltage signal (and / or negative voltage signal) output from the first power output end 112 and the second power output end 113 of a certain or some power supply driving ICs may be relatively large, in this case, the positive voltage signal (and / or negative voltage signal) output from the certain or some power supply driving ICs may be inverted into other power supply driving ICs, resulting in damage to the other power supply driving ICs. Therefore, in order to avoid damage to the other power supply driving ICs, at least two first diodes 18 and at least two second diodes 19 may be provided to prevent the positive voltage signal (and / or negative voltage signal) output from the certain or some power supply driving ICs from being inverted into other power supply driving ICs.

[0071] It can be seen that since the power supply driving circuit may further include at least two first diodes and at least two second diodes, it is possible to prevent the positive voltage signal (and / or negative voltage signal) output from the first power output terminal of a certain or some power supply driving ICs from flowing back to other power supply driving ICs, and it is possible to prevent the positive voltage signal (and / or negative voltage signal) output from the second power output terminal of a certain or some power supply driving ICs from flowing back to other power supply driving ICs. Therefore, it is possible to avoid the situation where other power supply driving ICs are damaged due to the relatively large positive voltage signal (and / or negative voltage signal) output from the certain or some power supply driving ICs, thereby improving the durability of the power supply driving ICs. Thus, the durability of the power supply driving circuit can be improved.

[0072] In some embodiments of the present application, in combination with Figures 2 to 6 , such as Figure 7 shown, the power supply driving circuit provided by the embodiments of the present application may further include: a control chip 20, which is electrically connected to the second control terminals 114 of at least two power supply driving ICs 11. The control chip 20 is configured to control the magnitude of the current output from the first power output terminals 112 of different power supply driving ICs 11 and control the magnitude of the current output from the second power output terminals 113 of different power supply driving ICs 11.

[0073] In some examples, the above control chip 20 may be any one of the following: a system-on-chip (SOC), a microcontroller unit (MCU), a single-chip microcomputer, etc. Of course, the control chip 20 may also be other chips, and the embodiments of the present application do not limit this.

[0074] In some examples, the above second control terminal 114 may be a SET terminal.

[0075] In some examples, the control chip 20 may control the positive voltage signal and the negative voltage signal output from the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11 by outputting a control signal to the second control terminal 114 of the power supply driving IC 11. For example, controlling the positive voltage signal and the negative voltage signal output (or not output) from the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11; or controlling the magnitude of the current output from the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11.

[0076] In some examples, the control chip 20 may output a control signal to the second control terminal 114 of the power supply driving IC 11 according to the magnitude of the required current of the load to control the positive voltage signal and the negative voltage signal output from the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11.

[0077] Optionally, when the level of the control signal output by the control chip 20 to a power supply driving IC 11 is low, the power supply driving IC 11 can be in an off state. That is to say, the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11 may not output a positive voltage signal and a negative voltage signal.

[0078] When the level of the control signal output by the control chip 20 to a power supply driving IC 11 is high, the power supply driving IC 11 can be in a full-power operation state. That is to say, the magnitudes of the currents output by the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11 are the largest.

[0079] When the control signal output by the control chip 20 to a power supply driving IC 11 is a driving pulse width modulation (PWM) wave, the power supply driving IC 11 can be in an operation state. That is to say, the first power output terminal 112 and the second power output terminal 113 of the power supply driving IC 11 can output a positive voltage signal and a negative voltage signal, and the magnitudes of the output currents can vary with the duty cycle of the PWM wave. For example, the higher the duty cycle of the PWM wave, the larger the magnitude of the output current; the lower the duty cycle of the PWM wave, the smaller the magnitude of the output current.

[0080] It can be seen that since a control chip can also be provided in the power supply driving circuit, and the control chip is electrically connected to the second control terminals of at least two power supply driving ICs, the positive voltage signal and the negative voltage signal whose output currents of the first power output terminal and the second power output terminal of any power supply driving IC can accurately meet the load requirements can be controlled by the control chip. Therefore, the accuracy of the positive voltage signal and the negative voltage signal whose output currents of the power supply driving circuit meet the load requirements can be improved.

[0081] An embodiment of the present application provides a power supply driving circuit, which includes at least two power supply driving ICs. The power input terminal of each power supply driving IC is electrically connected to a power supply. The first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal of the power supply driving circuit, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal of the power supply driving circuit. Among them, the positive voltage output terminal is used to output a positive voltage signal, and the negative voltage output terminal is used to output a negative voltage signal. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal. That is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the positive voltage output terminal can output is relatively large. And the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the negative voltage output terminal can output is relatively large, improving the utilization efficiency of the power supply driving IC. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load. And, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is several times the cost of a single power supply driving IC with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output, the utilization efficiency of the power supply driving IC is improved. That is to say, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. Therefore, the cost of the power supply driving circuit can also be reduced. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load, the utilization rate can be improved and the cost of the power supply driving circuit can be reduced.

[0082] The following will illustrate by way of example the specific connection manner between the positive voltage output terminal 13 and the load.

[0083] In some embodiments of the present application, in combination with Figure 2 , as Figure 8 shown, the power supply driving circuit provided by the embodiment of the present application may further include: a load 21. The positive voltage input terminal 211 of the load 21 is electrically connected to the positive voltage output terminal 13, and the negative voltage input terminal 212 of the load 21 is electrically connected to the negative voltage output terminal 14.

[0084] It can be understood that the positive pressure input terminal 211 of the load 21 is directly electrically connected to the positive pressure output terminal 13, and the negative pressure input terminal 212 of the load 21 is directly electrically connected to the negative pressure output terminal 14.

[0085] In some examples, the load 21 can be a display screen, and the display screen can be a non-foldable screen (i.e., a straight screen); alternatively, the load 21 can be a flash.

[0086] In some examples, the above at least two power driver ICs 11 can directly output a positive pressure signal and a negative pressure signal to the load 21, or the at least two power driver ICs can output a positive pressure signal and a negative pressure signal to the load 21 according to the control of the control chip 20.

[0087] Thus, it can be known that since the first power output terminal of each power driver IC is electrically connected to the positive pressure output terminal, the magnitude of the current output by the positive pressure output terminal can be the sum of the magnitudes of the currents output by the first power output terminals of each power driver IC. That is to say, the maximum magnitude of the current that the positive pressure output terminal can output is relatively large. And since the second power output terminal of each power driver IC is electrically connected to the negative pressure output terminal, the magnitude of the current output by the negative pressure output terminal can be the sum of the magnitudes of the currents output by the second power output terminals of each power driver IC. That is to say, the maximum magnitude of the current that the negative pressure output terminal can output is relatively large. Thereby, it can be ensured that the power driver circuit can output a positive pressure signal and a negative pressure signal whose currents are suitable for the load to the load, improving the utilization efficiency of the power driver IC; and moreover, since the cost of a single power driver IC that can output a positive pressure signal and a negative pressure signal with a relatively large maximum current magnitude is higher than the cost of at least two power driver ICs that can output a positive pressure signal and a negative pressure signal with a relatively small maximum current magnitude, the cost of the power driver circuit can be reduced.

[0088] In some embodiments of the present application, in combination with Figure 2 , such as Figure 9As shown in the figure, the power supply driving circuit provided by the embodiment of the present application further includes: a switching switch 22, a positive voltage output terminal 13 is electrically connected to a first input terminal 221 of the switching switch 22, and a negative voltage output terminal 14 is electrically connected to a second input terminal 222 of the switching switch 22; the switching switch 22 includes at least two power output units 223, and each power output unit 223 includes a first output terminal 2231, a first switching unit 2232, a second output terminal 2233, and a second switching unit 2234. The first output terminal 2231 is electrically connected to the first input terminal 221 through the first switching unit 2232, and the second output terminal 2233 is electrically connected to the second input terminal 222 through the second switching unit 2234; a load 21, the number of the loads 21 is at least two, and the positive voltage input terminals 211 of each load 21 are respectively electrically connected to the first output terminals 2231 in a power output unit 223, and the negative voltage input terminals 212 of each load 21 are respectively electrically connected to the second output terminals 2233 in a power output unit 223; wherein, the switching switch 22 is configured to control the on / off of the first switching unit 2232 and the second switching unit 2234 in the power output unit 223, so as to control the on / off of the path between the positive voltage output terminal 13 and the positive voltage input terminal 211 electrically connected to the power output unit 223, and control the on / off of the path between the negative voltage output terminal 14 and the negative voltage input terminal 212 electrically connected to the power output unit 223.

[0089] It should be noted that Figure 9 in the figure, the number of loads is two for illustration. In practical applications, those skilled in the art can set any number of loads according to requirements. Figure 9 In the figure, the power output unit 223 is illustrated by a dashed box.

[0090] It can be understood that for Figure 9 , as Figure 10 shown in the figure, at this time, two power supply driving ICs 11 are arranged in parallel, and each load 21 can reuse the two power supply driving ICs 11.

[0091] As Figure 11 shown in the figure, the number of the above-mentioned loads 21 can also be three. At this time, the positive voltage input terminals 211 of each of the three loads 21 are respectively electrically connected to the first output terminals 2231 in a power output unit 223, and the negative voltage input terminals 212 of each load 21 are respectively electrically connected to the second output terminals 2233 in a power output unit 223; wherein, the switching switch 22 is configured to control the on / off of the first switching unit 2232 and the second switching unit 2234 in the power output unit 223, so as to control the on / off of the path between the positive voltage output terminal 13 and the positive voltage input terminal 211 electrically connected to the power output unit 223, and control the on / off of the path between the negative voltage output terminal 14 and the negative voltage input terminal 212 electrically connected to the power output unit 223.

[0092] It should be noted that Figure 11 it is illustrated with three loads, and those skilled in the art can set any number of loads according to requirements in actual applications. Figure 11 The power output unit 223 is illustrated with a dashed box.

[0093] In some examples, the above switching switch 22 can be an all-T switching switch, where T is a positive integer greater than 1.

[0094] In some examples, the above first output terminal 2231 can be a positive voltage output terminal. It can be understood that this first output terminal 2231 is used to provide a positive voltage signal to the load 21. The above second output terminal 2234 can be a negative voltage output terminal. It can be understood that this second output terminal 2234 is used to provide a negative voltage signal to the load 21.

[0095] In some examples, the above first switch unit 2232 can be any one of the following: a switching transistor, a single-pole single-throw switch, etc. The above second switch unit 2234 can be any one of the following: a switching transistor, a single-pole single-throw switch, etc.

[0096] In some examples, each power output unit 223 corresponds to a load 21 respectively. That is to say, the first output terminal 2231 in each power output unit 223 is electrically connected to the positive voltage input terminal 211 of the load 21 corresponding to each power output unit 223, and the second output terminal 2233 in each power output unit 223 is electrically connected to the negative voltage input terminal 212 of the load 21 corresponding to each power output unit 223.

[0097] In some examples, the switching switch 22 can first determine the load 21 to be powered from at least two loads 21, and then control the first switch unit 2232 and the second switch unit 2234 in the power output unit 223 corresponding to the load 21 to be powered to conduct, and control the first switch unit 2232 and the second switch unit 2234 in the power output units 223 corresponding to the other loads 21 except the load 21 to be powered to disconnect, so that the positive voltage output terminal 13 is electrically connected to the positive voltage input terminal 211 of the load 21 to be powered, and the negative voltage output terminal 14 is electrically connected to the negative voltage input terminal 212 of the load 21 to be powered, so that the power driving IC 11 can provide a positive voltage signal and a negative voltage signal to the load 21 to be powered.

[0098] It can be seen that since a switching switch can also be provided in the power supply driving circuit, the on / off states of the first switching unit and the second switching unit in the power output unit of the switching switch can be controlled, so that the first input terminal and the second input terminal are electrically connected to different loads. Thus, the power supply driving IC can output a positive voltage signal and a negative voltage signal to different loads. Therefore, the flexibility of the power supply driving circuit in outputting the positive voltage signal and the negative voltage signal can be improved.

[0099] In some embodiments of the present application, in combination with Figure 9 and Figure 11 , the power supply driving circuit provided by the embodiments of the present application further includes: a control chip 20, which is electrically connected to the first control terminal 224 of the switching switch 22, and the control chip 20 is used to instruct the switching switch 22 to control the on / off states of the first switching unit 2232 and the second switching unit 2234 in the power output unit 223.

[0100] It should be noted that for the description of the control chip 20, reference can be made to the specific description in the above embodiments, and the embodiments of the present application will not be elaborated herein.

[0101] In some examples, the first control terminal 224 may include an SCL terminal and an SDA terminal.

[0102] In some examples, the control chip 20 may instruct the switching switch 22 to control the on / off states of the first switching unit 2232 and the second switching unit 2234 in the power output unit 223 in a manner of Inter-Integrated Circuit (IIC) communication.

[0103] It can be seen that since a control chip can also be provided in the power supply driving circuit, the on / off states of the first switching unit and the second switching unit in the power output unit can be controlled by the control chip, so that the positive voltage output terminal is electrically connected to the positive voltage input terminal of different loads, and the negative voltage output terminal is electrically connected to the negative voltage input terminal of different loads, that is, the power supply driving IC can output a positive voltage signal and a negative voltage signal to different loads. Therefore, the automation and convenience of the power supply driving circuit in outputting the positive voltage signal and the negative voltage signal can be improved.

[0104] Figure 12 The flowchart of the control method provided by the embodiments of the present application is shown, and this control method is applied to the power supply driving circuit in the above embodiments. As Figure 12 shown, the control method provided by the embodiments of the present application may include the following steps 101 to 103.

[0105] Step 101: The power supply driving circuit determines a first load to be powered from at least one load of the electronic device.

[0106] In some embodiments of the present application, the above-mentioned electronic device may be a foldable screen electronic device or a non-foldable screen electronic device.

[0107] In some embodiments of the present application, the above-mentioned at least one load may include at least one of the following: a display screen, a flash, etc. Among them, when the electronic device is a foldable screen electronic device, the display screen may include a foldable display screen or a non-foldable display screen. The foldable display screen may include at least one inner screen, and the non-foldable display screen may include at least one outer screen. When the electronic device is a non-foldable screen electronic device, the display screen may be a non-foldable display screen, and the non-foldable display screen may be a straight screen.

[0108] In some embodiments of the present application, the power supply driving circuit may obtain at least one status signal from the electronic device, and determine a first load to be powered from at least one load according to the at least one status signal. The at least one status signal is used to indicate the status of the electronic device, and the status may include any one of the following: a folded state, an unfolded state, a used state, a non-used state, etc.

[0109] In some examples, when the electronic device is a non-foldable screen electronic device, the at least one status signal may be used to indicate that the electronic device is in a used state or a non-used state. When the electronic device is a foldable screen electronic device, the at least one status signal may be used to indicate that the electronic device is in a folded state or an unfolded state.

[0110] Next, taking the at least one load including at least one outer screen and at least one inner screen as an example, a specific solution for the power supply driving circuit to determine the first load to be powered will be described.

[0111] In some embodiments of the present application, the above-mentioned at least one load includes at least one outer screen and at least one inner screen. In some examples, step 101 above may be specifically implemented by the following step 101a and step 101b, or step 101a and step 101c.

[0112] Step 101a: The power supply driving circuit obtains a first status signal.

[0113] In the embodiments of the present application, the above-mentioned first status signal is used to indicate that the electronic device is in a folded state or an unfolded state.

[0114] In some examples, the control chip of the power supply driving circuit requests the electronic device to determine the status of the electronic device. Thus, the electronic device can detect the angle between at least two bodies of the electronic device, determine the status of the electronic device according to the angle, and send a first status signal to the control chip according to the status of the electronic device. Therefore, the power supply driving circuit can obtain the first status signal.

[0115] Step 101b: When the first status signal indicates that the electronic device is in the folded state, the power supply driving circuit determines at least one outer screen as the first load.

[0116] In the embodiments of the present application, if the first status signal indicates that the electronic device is in the folded state, it can be considered that the user needs to use the outer screen and does not need to use the inner screen. Therefore, the power supply driving circuit can determine at least one outer screen as the first load.

[0117] In some examples, when the first status signal indicates that the electronic device is in the folded state, the power supply driving circuit can also obtain the usage status of at least one outer screen, where the usage status is used to indicate whether the outer screen is about to be used, and determine the outer screen whose usage status indicates that it is about to be used as the first load.

[0118] In some examples, the power supply driving circuit can determine whether it has received an input from the user on at least one outer screen (such as a press input, a gaze input of the user's eyes, etc.) to determine the usage status of at least one outer screen. For example, if an input from the user on an outer screen is received, it can be determined that the usage status of the one outer screen indicates that the one outer screen is about to be used.

[0119] Step 101c: When the first status signal indicates that the electronic device is in the unfolded state, the power supply driving circuit determines at least one inner screen as the first load.

[0120] In the embodiments of the present application, if the first status signal indicates that the electronic device is in the unfolded state, it can be considered that the user needs to use the inner screen and does not need to use the outer screen. Therefore, the power supply driving circuit can determine at least one inner screen as the first load.

[0121] In some examples, when the first status signal indicates that the electronic device is in the unfolded state, the power supply driving circuit can also obtain the usage status of at least one inner screen, where the usage status is used to indicate whether the inner screen is about to be used, and determine the inner screen whose usage status indicates that it is about to be used as the first load.

[0122] In some examples, the power supply driving circuit can determine whether it has received an input from the user on at least one inner screen (such as a press input, a gaze input of the user's eyes, etc.) to determine the usage status of at least one inner screen. For example, if an input from the user on an inner screen is received, it can be determined that the usage status of the one inner screen indicates that the one inner screen is about to be used.

[0123] It can be seen that since the power supply driving circuit can learn whether the electronic device is in a folded state or an unfolded state through the first state signal, and in the case where the electronic device is in the folded state, at least one external screen is determined as the first load, that is, the external screen that the user may use can be determined as the first load to be powered, and the internal screen that the user does not use will not be determined as the load to be powered; or, in the case where the electronic device is in the unfolded state, at least one internal screen can be determined as the first load, that is, the internal screen that the user may use can be determined as the first load to be powered, and the external screen that the user does not use will not be determined as the load to be powered; therefore, in the subsequent steps, the power supply driving circuit will only supply power to the screen that the user may use, and will not supply power to the screen that the user does not use, thereby saving energy consumption.

[0124] Moreover, since the power supply driving circuit does not separately set a power supply driving IC for the external screen and the internal screen as in the related art, it is possible to avoid the situation where the power supply driving circuit does not use the power supply driving IC corresponding to the internal screen when the electronic device is in the folded state, and it is possible to avoid the situation where the power supply driving circuit does not use the power supply driving IC corresponding to the external screen when the electronic device is in the unfolded state, thereby improving the utilization rate of the power supply driving IC.

[0125] Step 102: The power supply driving circuit obtains the required current parameter of the first load.

[0126] In some embodiments of the present application, the above required current parameter may include: the current magnitude of the positive voltage signal required by the first load, and the current magnitude of the negative voltage signal required by the first load.

[0127] In some embodiments of the present application, the power supply driving circuit may obtain the required current magnitude through the control chip in the above embodiments.

[0128] In some examples, the power supply driving circuit may directly obtain the required current magnitude from the first load through the control chip, or may obtain the operating parameter of the first load from the first load through the control chip, and determine the required current magnitude based on the operating parameter. Wherein, the operating parameter is used to indicate the operating parameter required by the first load.

[0129] Wherein, when the first load includes a display screen, the operating parameter may include at least one of the following: pixel brightness requirement information, color information, screen refresh rate, etc. When the first load includes a flash, the operating parameter may include at least one of the following: brightness requirement information, lighting duration, etc.

[0130] Optionally, the correspondence between the operating parameters and the required current magnitude can be pre-configured in the control chip of the power driving circuit, so that the control chip can use this correspondence to determine the required current magnitude corresponding to the operating parameters.

[0131] In some embodiments of the present application, the above step 102 can be specifically implemented by the following step 102a and step 102b.

[0132] Step 102a: The power driving circuit obtains the display parameters corresponding to the first load.

[0133] In the embodiments of the present application, the above display parameters include at least one of the following: display brightness parameter, display color parameter, refresh rate.

[0134] In some examples, the above display brightness parameter may include a display brightness value. Of course, the display brightness parameter may also include other parameters, and the embodiments of the present application do not limit this.

[0135] In some examples, the above display color parameter may include color values of at least one color. Of course, the display color parameter may also include other parameters, and the embodiments of the present application do not limit this.

[0136] Step 102b: The power driving circuit determines the required current magnitude according to the display parameters.

[0137] In some examples, the correspondence between the display parameters and the current magnitude is pre-configured in the control chip of the power driving circuit, so that the power driving circuit can first determine the matching display parameters from this correspondence, and then determine the current magnitude corresponding to the display parameters as the required current magnitude.

[0138] As can be seen, since the power driving circuit can determine the required current magnitude according to the display parameters corresponding to the first load, it can ensure that the first load can accurately display the picture it wants to display, thereby achieving accurate color restoration and delicate image display.

[0139] Step 103: The power driving circuit controls the positive voltage output terminal of the power driving circuit to output a positive voltage signal to the first load according to the required current parameter, and controls the negative voltage output terminal of the power driving circuit to output a negative voltage signal to the first load.

[0140] In some embodiments of the present application, the power driving circuit may determine the number of power driving ICs required according to the magnitude of the required current, and control the first power output terminals of the power driving ICs of this number to output a positive voltage signal to the positive voltage output terminal, so that the positive voltage output terminal provides a positive voltage signal with a current that meets the requirements to the first load, and control the second power output terminals of the power driving ICs of this number to output a negative voltage signal to the first negative voltage output terminal, so that the negative voltage output terminal provides a negative voltage signal with a current that meets the requirements to the first load.

[0141] In some embodiments of the present application, step 103 above may be specifically implemented by the following step 103a or step 103b.

[0142] Step 103a: When the magnitude of the required current is less than or equal to the preset current magnitude, the power driving circuit controls the first power output terminals of N power driving ICs in the power driving circuit to output a positive voltage signal, and controls the second power output terminals of the N power driving ICs to output a negative voltage signal.

[0143] In the embodiments of the present application, N is a positive integer.

[0144] In some examples, the above preset current magnitude may be N times the maximum current magnitude of the voltage signal that each power driving IC can output. Of course, the preset current magnitude may also be other current magnitudes, and the embodiments of the present application do not limit this.

[0145] For example, in combination with Figure 9 and Figure 11 , when the magnitude of the required current of the first load is less than or equal to the preset current magnitude (for example, 1 times the maximum current magnitude of the voltage signal that each power driving IC 11 can output), the power driving circuit may control the first power output terminal of one power driving IC 11 in the power driving circuit to output a positive voltage signal, and control the second power output terminal of this one power driving IC to output a negative voltage signal.

[0146] For another example, when the magnitude of the required current of the first load is less than or equal to the preset current magnitude (for example, 2 times the maximum current magnitude of the voltage signal that each power driving IC can output), the power driving circuit may control the first power output terminals of two power driving ICs in the power driving circuit to output a positive voltage signal, and control the second power output terminals of these two power driving ICs to output a negative voltage signal.

[0147] In some examples, the above N power driving ICs may be the default power driving ICs among at least two power driving ICs, or may be the power driving ICs with the lowest working load among at least two power driving ICs.

[0148] Among them, the power supply driving circuit can obtain the temperature and / or operating frequency of each power supply driving IC through a control chip to determine the workload of each power supply driving IC. It can be understood that the higher the temperature and / or operating frequency of the power supply driving IC, the higher the workload of the power supply driving IC.

[0149] In some examples, the power supply driving circuit can output a control signal with a high level or output a PWM wave to N power supply driving ICs through the control chip, and output a control signal with a low level to other power supply driving ICs except the N power supply driving ICs among at least two power supply driving ICs, so as to control the first power output terminal of the N power supply driving ICs to output a positive voltage signal and control the second power output terminal of the N power supply driving ICs to output a negative voltage signal.

[0150] Thus, it can be known that since the power supply driving circuit can control the first power output terminal and the second power output terminal of N power supply driving ICs (i.e., a smaller number of power supply driving ICs) to output a positive voltage signal and a negative voltage signal when the magnitude of the required current is less than or equal to the preset current magnitude, that is, when the magnitude of the required current is small, it is possible to avoid the situation that the current magnitudes of the positive voltage signal and the negative voltage signal output by the power supply driving circuit are too large, resulting in damage to the first load, thereby improving the durability of the load of the electronic device. In this way, the durability of the electronic device can be improved.

[0151] Step 103b: When the magnitude of the required current is greater than the preset current magnitude, the power supply driving circuit controls the first power output terminal of M power supply driving ICs in the power supply driving circuit to output a positive voltage signal, and controls the second power output terminal of the M power supply driving ICs to output a negative voltage signal.

[0152] In the embodiment of the present application, M is a positive integer greater than N.

[0153] In some examples, the above M power supply driving ICs may include N power supply driving ICs, or the M power supply driving ICs do not include N power supply driving ICs.

[0154] In some examples, the number M of the above M power supply driving ICs can be determined by the current difference between the magnitude of the required current and the preset current magnitude.

[0155] Optionally, when the magnitude of the required current is greater than the preset current magnitude and less than or equal to Q times the preset current magnitude, the number M of the M power supply driving ICs can be Q, and Q is a positive integer greater than N.

[0156] Illustrate by way of example, in combination with Figure 9 and Figure 11, when the magnitude of the required current is greater than the preset current magnitude (for example, the maximum current magnitude of the voltage signal that a power supply driving IC 11 can output), and less than or equal to twice the maximum current magnitude, the power supply driving circuit can control the first power output terminals of two power supply driving ICs to output a positive voltage signal, and control the second power output terminals of the two power supply driving ICs to output a negative voltage signal.

[0157] In some examples, the power supply driving circuit can output a control signal with a high level or output a PWM wave to M power supply driving ICs through a control chip, so as to control the first power output terminals of the M power supply driving ICs to output a positive voltage signal, and control the second power output terminals of the M power supply driving ICs to output a negative voltage signal.

[0158] It can be seen that since when the magnitude of the required current is greater than the preset current magnitude, that is, when the magnitude of the required current is relatively large, the power supply driving circuit can output a positive voltage signal and a negative voltage signal through the first power output terminals and the second power output terminals of a relatively large number of power supply driving ICs (i.e., M power supply driving ICs), without setting a single power supply driving IC with a relatively large maximum output current magnitude, therefore, the cost of the power supply driving circuit can be reduced.

[0159] In some embodiments of the present application, the above step 103b can be specifically implemented by the following step 103b1 and step 103b2.

[0160] Step 103b1: When the magnitude of the required current is greater than the preset current magnitude, the power supply driving circuit determines a first ratio and a second ratio according to the magnitude of the required current.

[0161] In the embodiments of the present application, the above first ratio is the ratio of the current magnitude output by the first power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current, and the above second ratio is the ratio of the current magnitude output by the second power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current.

[0162] In some examples, the power supply driving circuit can determine the first ratio and the second ratio through a control chip based on the magnitude of the required current and the operating parameters of the M power supply driving ICs.

[0163] It should be noted that for the description of the above operating parameters, reference can be made to the specific description in the above embodiments, and the embodiments of the present application will not be elaborated herein.

[0164] Optionally, the power supply driving circuit can determine, through the control chip, the proportion of the current magnitude output from the first power output terminal of each of the M power supply driving ICs in the required current magnitude, and the proportion of the current magnitude output from the second power output terminal of each of the M power supply driving ICs in the required current magnitude. For example, the electronic device can determine the proportion of the current magnitude output from the first power output terminal of each power supply driving IC in the required current magnitude as 1 / M, and determine the proportion of the current magnitude output from the second power output terminal of each power supply driving IC in the required current magnitude as 1 / M; then, according to the operating parameters of each power supply driving IC, determine an offset value, obtain M offset values, and determine the sum of the M offset values and the proportion of the current magnitude output from the first power output terminal of the corresponding M power supply driving ICs in the required current magnitude as the first proportion, and determine the sum of the M offset values and the proportion of the current magnitude output from the second power output terminal of the corresponding M power supply driving ICs in the required current magnitude as the second proportion.

[0165] Among them, the corresponding relationship between the operating parameters and the offset values can be pre-configured in the control chip, so that the control chip can use this corresponding relationship to determine the offset value corresponding to the operating parameter.

[0166] Step 103b2: The power supply driving circuit controls the current magnitude of the positive voltage signal output from the first power output terminal of the M power supply driving ICs based on the first proportion, and controls the current magnitude of the negative voltage signal output from the second power output terminal of the M power supply driving ICs based on the second proportion.

[0167] In some examples, the electronic device can adjust the duty cycle of the PWM wave output to each of the M power supply driving ICs based on the first proportion and the second proportion, so as to control the current magnitude of the positive voltage signal output from the first power output terminal of the M power supply driving ICs, and control the current magnitude of the negative voltage signal output from the second power output terminal of the M power supply driving ICs.

[0168] Thus, it can be seen that since the power supply driving circuit can determine the first proportion and the second proportion according to the required current magnitude, that is, the proportion of the current magnitude output from the first power output terminal of each power supply driving IC in the required current magnitude, and the proportion of the current magnitude output from the second power output terminal of each power supply driving IC in the required current magnitude, and can accurately control the current magnitudes output from the first power output terminal and the second power output terminal of the M power supply driving ICs according to the first proportion and the second proportion, therefore, the first load can obtain accurate positive and negative voltage signals, so that the first load can work accurately.

[0169] It can be understood that when the first load is a display screen and the display screen needs to display different contents, the power supply driving circuit can calculate and dynamically allocate the proportion of the current output by each of the M power supply driving ICs to the required current. For example, when displaying a large-area high-brightness white picture, the power supply driving circuit can instruct each of the M power supply driving ICs to output a voltage signal with a relatively large current magnitude at the same time to meet the high-brightness requirements of the pixels; while when displaying a low-brightness and colorful picture, the power supply driving circuit will precisely control each of the M power supply driving ICs to output voltage signals with different current magnitudes to ensure that each pixel can obtain an accurate driving current, thereby achieving accurate color reproduction and delicate image display.

[0170] An embodiment of the present application provides a control method. The power supply driving circuit can determine a first load to be powered from at least one load of the electronic device, and obtain the magnitude of the required current of the first load. Thus, the power supply driving circuit can control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal. That is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the positive voltage output terminal can output is relatively large, and the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the negative voltage output terminal can output is relatively large, which improves the utilization efficiency of the power supply driving IC. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal whose currents are suitable for the load to the load; and, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is several times the cost of a single power supply driving IC with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. That is to say, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. Therefore, the cost of the power supply driving circuit can be reduced. And, since the power supply driving circuit can determine a first load to be powered from at least one load of the electronic device, and control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load. That is to say, the power supply driving circuit can supply power to the first load to be powered, rather than supplying power to all the loads of the electronic device. Therefore, the power consumption of the power supply driving circuit can be saved. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal whose currents are suitable for the load to the load, the cost of the power supply driving circuit can be reduced, and the power consumption of the power supply driving circuit can be saved.

[0171] In some embodiments of the present application, before step 103 above, the control method provided by the embodiments of the present application may further include the following step 100.

[0172] Step 100: The power supply driving circuit controls the switching switch of the power supply driving circuit through the control chip of the power supply driving circuit to turn on the first switching unit and the second switching unit in the first power output unit, so as to turn on the path between the positive voltage output terminal and the positive voltage input terminal of the first load, and turn on the path between the negative voltage output terminal and the negative voltage input terminal of the first load.

[0173] In the embodiment of the present application, the above-mentioned first power output unit is the power output unit among at least two power output units included in the switching switch. The positive voltage input terminal of the first load is electrically connected to the first output terminal of the first power output unit, and the negative voltage input terminal of the first load is electrically connected to the second output terminal of the first power output unit.

[0174] It can be seen that since the power supply driving circuit can also control the switching switch of the power supply driving circuit through the control chip to turn on the first switching unit and the second switching unit in the first power output unit, that is to say, when there are multiple loads in the power supply driving circuit, the power supply driving circuit can still accurately turn on the path between the positive voltage output terminal and the positive voltage input terminal of the first load, and turn on the path between the negative voltage output terminal and the negative voltage input terminal of the first load. Therefore, the power supply driving circuit can accurately supply power to the first load, thereby improving the accuracy of power supply of the power supply driving circuit.

[0175] For the control method provided by the embodiment of the present application, the execution subject can be a control device. In the embodiment of the present application, taking the control device executing the control method as an example, the control device provided by the embodiment of the present application is described.

[0176] Figure 13 The structural schematic diagram of the control device provided by the embodiment of the present application is shown. This control device is applied to the power supply driving circuit in the above-mentioned embodiment. As Figure 13 shown, the control device 300 provided by the embodiment of the present application may include: a determination module 301, an acquisition module 302, and a control module 303.

[0177] Among them, the determination module 301 is used to determine the first load to be powered from at least one load of the electronic device. The acquisition module 302 is used to acquire the magnitude of the required current of the first load determined by the determination module 301. The control module 303 is used to control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load according to the magnitude of the required current acquired by the acquisition module 302, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load.

[0178] An embodiment of the present application provides a control device. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal. That is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the positive voltage output terminal can output is relatively large. And the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the negative voltage output terminal can output is relatively large, improving the utilization efficiency of the power supply driving IC. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load. And, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the output positive voltage signal and negative voltage signal is several times that of a single power supply driving IC with a relatively small maximum current magnitude of the output positive voltage signal and negative voltage signal. That is to say, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the output positive voltage signal and negative voltage signal is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the output positive voltage signal and negative voltage signal. Therefore, the cost of the power supply driving circuit can be reduced. And, since the control device can determine a first load to be powered from at least one load of the electronic device, and control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load. That is to say, the control device can control the power supply driving circuit to supply power to the first load to be powered, rather than supply power to all loads of the electronic device. Therefore, the power consumption of the power supply driving circuit can be saved. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load, the cost of the power supply driving circuit can be reduced, and the power consumption of the power supply driving circuit can be saved.

[0179] In a possible implementation manner, the at least one load includes at least one outer screen and at least one inner screen. The determining module 301 is specifically configured to obtain a first status signal, where the first status signal is used to indicate that the electronic device is in a folded state or an unfolded state; and when the first status signal indicates that the electronic device is in a folded state, determine at least one outer screen as the first load; or, when the first status signal indicates that the electronic device is in an unfolded state, determine at least one inner screen as the first load.

[0180] In a possible implementation manner, the above control module 303 is further configured to, before controlling the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load and controlling the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load according to the magnitude of the required current, control the switching switch of the power supply driving circuit through the control chip of the power supply driving circuit to turn on the first switch unit and the second switch unit in the first power output unit, so as to turn on the path between the positive voltage output terminal and the positive voltage input terminal of the first load, and turn on the path between the negative voltage output terminal and the negative voltage input terminal of the first load; wherein, the first power output unit is the power output unit among at least two power output units included in the switching switch, the positive voltage input terminal of the first load is electrically connected to the first output terminal of the first power output unit, and the negative voltage input terminal of the first load is electrically connected to the second output terminal of the first power output unit.

[0181] In a possible implementation manner, the above control module 303 is specifically configured to, when the magnitude of the required current is less than or equal to the preset current magnitude, control the first power output terminals of the N power supply driving ICs in the power supply driving circuit to output positive voltage signals, and control the second power output terminals of the N power supply driving ICs to output negative voltage signals; or, when the magnitude of the required current is greater than the preset current magnitude, control the first power output terminals of the M power supply driving ICs in the power supply driving circuit to output positive voltage signals, and control the second power output terminals of the M power supply driving ICs to output negative voltage signals; where N is a positive integer, and M is a positive integer greater than N.

[0182] In a possible implementation manner, the above control module 303 is specifically configured to determine a first ratio and a second ratio according to the magnitude of the required current, where the first ratio is the ratio of the magnitude of the current output by the first power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current, and the second ratio is the ratio of the magnitude of the current output by the second power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current; and based on the first ratio, control the magnitude of the current output by the first power output terminals of the M power supply driving ICs to output positive voltage signals, and based on the second ratio, control the magnitude of the current output by the second power output terminals of the M power supply driving ICs to output negative voltage signals.

[0183] In a possible implementation manner, the above obtaining module 302 is specifically configured to obtain the display parameters corresponding to the first load, where the display parameters include at least one of the following: display brightness parameter, display color parameter, refresh rate; and determine the magnitude of the required current according to the display parameters.

[0184] The control device in the embodiments of the present application may be an electronic device or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or other devices other than terminals. Exemplarily, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a palmtop computer, an in-vehicle electronic device, a mobile internet device (MID), an augmented reality (AR) / virtual reality (VR) device, a robot, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. It may also be a server, a network attached storage (NAS), a personal computer (PC), a television (TV), a teller machine, or a self-service machine, etc. The embodiments of the present application do not make specific limitations.

[0185] The control device in the embodiments of the present application may be a device with an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems. The embodiments of the present application do not make specific limitations.

[0186] The control device provided by the embodiments of the present application can implement Figure 12 each process implemented by the method embodiments. To avoid repetition, it will not be elaborated here.

[0187] In some embodiments of the present application, as Figure 14 shown, the embodiments of the present application further provide an electronic device 400, including a processor 401 and a memory 402. A program or instruction that can run on the processor 401 is stored on the memory 402. When the program or instruction is executed by the processor 401, it implements each process step of the above control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0188] It should be noted that the electronic devices in the embodiments of the present application include the above-mentioned mobile electronic devices and non-mobile electronic devices.

[0189] Figure 15 A schematic diagram of the hardware structure of an electronic device for implementing the embodiments of the present application.

[0190] The electronic device 100 includes, but is not limited to, components such as a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, and a processor 110, etc.

[0191] Those skilled in the art can understand that the electronic device 100 may further include a power source (such as a battery) for supplying power to each component. The power source can be logically connected to the processor 110 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 15 The structure of the electronic device shown does not limit the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0192] Among them, the processor 110 is used to determine a first load to be powered from at least one load of the electronic device; obtain the magnitude of the required current of the first load; and according to the magnitude of the required current, control the positive voltage output terminal of the power driver circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power driver circuit to output a negative voltage signal to the first load.

[0193] An embodiment of the present application provides an electronic device. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal. That is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the positive voltage output terminal can output is relatively large. And the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output. That is, the maximum current magnitude that the negative voltage output terminal can output is relatively large, which improves the utilization efficiency of the power supply driving IC. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load. And, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is several times the cost of a single power supply driving IC with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. That is to say, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. Therefore, the cost of the power supply driving circuit can be reduced. And, since the power supply driving circuit can determine a first load to be powered from at least one load of the electronic device, and control the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load, and control the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load. That is to say, the power supply driving circuit can supply power to the first load to be powered, rather than supplying power to all loads of the electronic device. Therefore, the power consumption of the power supply driving circuit can be saved. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load, the cost of the power supply driving circuit can be reduced, and the power consumption of the power supply driving circuit can be saved.

[0194] In some embodiments of the present application, at least one load includes at least one outer screen and at least one inner screen. The processor 110 is specifically configured to obtain a first status signal, where the first status signal is used to indicate that the electronic device is in a folded state or an unfolded state; when the first status signal indicates that the electronic device is in a folded state, at least one outer screen is determined as the first load; when the first status signal indicates that the electronic device is in an unfolded state, at least one inner screen is determined as the first load.

[0195] In some embodiments of the present application, the processor 110 is further configured to, before controlling the positive voltage output terminal of the power supply driving circuit to output a positive voltage signal to the first load and controlling the negative voltage output terminal of the power supply driving circuit to output a negative voltage signal to the first load according to the magnitude of the required current, control the switching switch of the power supply driving circuit to turn on the first switch unit and the second switch unit in the first power output unit through the control chip of the power supply driving circuit, so as to turn on the path between the positive voltage output terminal and the positive voltage input terminal of the first load, and turn on the path between the negative voltage output terminal and the negative voltage input terminal of the first load; wherein, the first power output unit is the power output unit among at least two power output units included in the switching switch, the positive voltage input terminal of the first load is electrically connected to the first output terminal of the first power output unit, and the negative voltage input terminal of the first load is electrically connected to the second output terminal of the first power output unit.

[0196] In some embodiments of the present application, the processor 110 is specifically configured to control the first power output terminals of N power supply driving ICs in the power supply driving circuit to output positive voltage signals and control the second power output terminals of the N power supply driving ICs to output negative voltage signals when the magnitude of the required current is less than or equal to the preset current magnitude; or, control the first power output terminals of M power supply driving ICs in the power supply driving circuit to output positive voltage signals and control the second power output terminals of the M power supply driving ICs to output negative voltage signals when the magnitude of the required current is greater than the preset current magnitude; wherein, N is a positive integer, and M is a positive integer greater than N.

[0197] In some embodiments of the present application, the processor 110 is specifically configured to determine a first ratio and a second ratio according to the magnitude of the required current, where the first ratio is the ratio of the magnitude of the current output by the first power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current, and the second ratio is the ratio of the magnitude of the current output by the second power output terminal of each power supply driving IC among the M power supply driving ICs to the magnitude of the required current; based on the first ratio, control the magnitude of the current output by the first power output terminals of the M power supply driving ICs to output positive voltage signals, and based on the second ratio, control the magnitude of the current output by the second power output terminals of the M power supply driving ICs to output negative voltage signals.

[0198] In some embodiments of the present application, the processor 110 is specifically configured to obtain display parameters corresponding to the first load, where the display parameters include at least one of the following: display brightness parameter, display color parameter, refresh rate; and determine the magnitude of the required current according to the display parameters.

[0199] It should be understood that in the embodiments of the present application, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The graphics processing unit 1041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in the video capturing mode or the image capturing mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes at least one of a touch panel 1071 and other input devices 1072. The touch panel 1071 is also referred to as a touch screen. The touch panel 1071 may include two parts, a touch detection device and a touch controller. The other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated here.

[0200] The memory 109 can be used to store software programs and various data. The memory 109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 109 may include a volatile memory or a non-volatile memory, or the memory 109 may include both a volatile memory and a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDR SDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 109 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memories.

[0201] The processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 110 either.

[0202] The embodiment of the present application further provides an electronic device, which includes: the power supply driving circuit in the above embodiment.

[0203] The embodiment of the application provides an electronic device, which includes the power supply driving circuit in the above embodiment. Since the power supply driving circuit includes at least two power supply driving ICs, and the first power output terminal of each power supply driving IC is electrically connected to the positive voltage output terminal, and the second power output terminal of each power supply driving IC is electrically connected to the negative voltage output terminal. That is to say, the maximum current magnitude of the positive voltage signal that the positive voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the positive voltage signals that the first power output terminals of the at least two power supply driving ICs can output, that is, the maximum current magnitude that the positive voltage output terminal can output is relatively large, and the maximum current magnitude of the negative voltage signal that the negative voltage output terminal of the power supply driving circuit can output can be the sum of the maximum current magnitudes of the negative voltage signals that the second power output terminals of the at least two power supply driving ICs can output, that is, the maximum current magnitude that the negative voltage output terminal can output is relatively large, which improves the utilization efficiency of the power supply driving IC. Therefore, it can be ensured that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load; and moreover, since the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is several times the cost of a single power supply driving IC with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output, that is, the cost of a single power supply driving IC with a relatively large maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output is higher than the cost of at least two power supply driving ICs with a relatively small maximum current magnitude of the positive voltage signal and the negative voltage signal that can be output. Therefore, the cost of the power supply driving circuit can be reduced. Thus, while ensuring that the power supply driving circuit can output a positive voltage signal and a negative voltage signal suitable for the load to the load, the cost of the power supply driving circuit can be reduced.

[0204] The embodiment of the present application further provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, it realizes each process of the above control method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0205] Among them, the processor is the processor in the electronic device in the above-mentioned embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk, or optical disc, etc.

[0206] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above-mentioned control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0207] It should be understood that the chip mentioned in the embodiment of the present application can also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0208] The embodiment of the present application provides a computer program product, which is stored in a storage medium. The program product is executed by at least one processor to implement each process of the above-mentioned control method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0209] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0210] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc), and includes several instructions to enable a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods of the various embodiments of the present application.

[0211] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A power drive circuit, characterized in that: include: At least two power driver integrated circuits IC, the power input terminal of each of the power driver ICs is electrically connected to the power supply, the first power output terminal of each of the power driver ICs is electrically connected to the positive voltage output terminal of the power driver circuit, and the second power output terminal of each of the power driver ICs is electrically connected to the negative voltage output terminal of the power driver circuit; The positive pressure output terminal is used to output a positive pressure signal, and the negative pressure output terminal is used to output a negative pressure signal.

2. The power drive circuit according to claim 1, characterized in that: The power drive circuit also includes: A load, wherein the positive voltage input terminal of the load is electrically connected to the positive voltage output terminal, and the negative voltage input terminal of the load is electrically connected to the negative voltage output terminal.

3. The power driving circuit according to claim 1, characterized in that: The power drive circuit also includes: a switching switch, wherein the positive voltage output terminal is electrically connected to the first input terminal of the switching switch, the negative voltage output terminal is electrically connected to the second input terminal of the switching switch, the switching switch comprises at least two power output units, each of the power output units comprises a first output terminal, a first switch unit, a second output terminal and a second switch unit, the first output terminal is electrically connected to the first input terminal through the first switch unit, and the second output terminal is electrically connected to the second input terminal through the second switch unit; loads, the number of the loads being at least two, the positive voltage input terminal of each of the loads being electrically connected to the first output terminal of one of the power output units, and the negative voltage input terminal of each of the loads being electrically connected to the second output terminal of one of the power output units; Wherein, the switching switch is used to control the on-off of the first switch unit and the second switch unit in the power output unit, so as to control the on-off of the path between the positive pressure output end and the positive pressure input end electrically connected to the power output unit, and to control the on-off of the path between the negative pressure output end and the negative pressure input end electrically connected to the power output unit.

4. The power driving circuit according to claim 3, characterized in that: The power drive circuit also includes: A control chip, wherein the control chip is electrically connected to the first control end of the switching switch, and the control chip is used to instruct the switching switch to control the on and off of the first switching unit and the second switching unit in the power output unit.

5. The power drive circuit according to any one of claims 1 to 4, characterized in that: The power drive circuit also includes: A control chip, wherein the control chip is electrically connected to the second control terminals of at least two of the power driver ICs, and the control chip is used to control the current magnitude output by the first power output terminals of different power driver ICs, and to control the current magnitude output by the second power output terminals of different power driver ICs.

6. The power driving circuit according to claim 1, characterized in that: The power drive circuit also includes: A first capacitor, wherein an input terminal of the first capacitor is electrically connected to each of the first power supply output terminals, and an output terminal of the first capacitor is grounded; A second capacitor, wherein an input terminal of the second capacitor is electrically connected to each of the second power supply output terminals, and an output terminal of the second capacitor is grounded.

7. The power driving circuit according to claim 1, characterized in that: The power drive circuit also includes: at least two first diodes, wherein the anode of each of the first diodes is electrically connected to one of the first power supply output terminals, and the cathode of each of the first diodes is electrically connected to the positive voltage output terminal; At least two second diodes, the anode of each second diode is electrically connected to one of the second power supply output terminals, and the cathode of each second diode is electrically connected to the negative voltage output terminal.

8. The power driving circuit according to claim 1, characterized in that: Each of the power input terminals includes a first power input terminal and a second power input terminal; The power drive circuit also includes: A third capacitor, wherein the input end of the third capacitor is electrically connected to the power supply, the input end of the third capacitor is also electrically connected to each of the first power supply input ends, and the input end of the third capacitor is also electrically connected to each of the second power supply input ends through a first inductor.

9. A control method, applied to the power drive circuit according to any one of claims 1 to 8, characterized in that: The method comprises: Determining a first load to be powered from at least one load of the electronic device; Obtaining a required current of the first load; According to the required current, the positive voltage output terminal of the power driving circuit is controlled to output a positive voltage signal to the first load, and the negative voltage output terminal of the power driving circuit is controlled to output a negative voltage signal to the first load.

10. The method according to claim 9, characterized in that At least one of the loads includes at least one outer screen and at least one inner screen; The step of determining a first load to be powered from at least one load of the electronic device includes: Acquire a first state signal, where the first state signal is used to indicate that the electronic device is in a folded state or an unfolded state; When the first state signal indicates that the electronic device is in a folded state, at least one of the external screens is determined as the first load; When the first state signal indicates that the electronic device is in the unfolded state, at least one of the inner screens is determined as the first load.

11. The method according to claim 9, characterized in that Before controlling the positive voltage output terminal of the power driving circuit to output a positive voltage signal to the first load and controlling the negative voltage output terminal of the power driving circuit to output a negative voltage signal to the first load according to the required current, the method further includes: By means of the control chip of the power driving circuit, the switching switch of the power driving circuit is controlled to control the first switch unit and the second switch unit in the first power output unit to be turned on, so as to turn on the path between the positive voltage output terminal and the positive voltage input terminal of the first load, and turn on the path between the negative voltage output terminal and the negative voltage input terminal of the first load; Among them, the first power output unit is the power output unit among the at least two power output units included in the switching switch, the positive voltage input end of the first load is electrically connected to the first output end of the first power output unit, and the negative voltage input end of the first load is electrically connected to the second output end of the first power output unit.

12. The method according to claim 9, characterized in that The step of controlling the positive voltage output terminal of the power driving circuit to output a positive voltage signal to the first load and controlling the negative voltage output terminal of the power driving circuit to output a negative voltage signal to the first load according to the required current includes: When the required current is less than or equal to the preset current, the first power output terminals of the N power driver ICs in the power driver circuit are controlled to output positive voltage signals, and the second power output terminals of the N power driver ICs are controlled to output negative voltage signals; When the required current is greater than the preset current, the first power output terminals of the M power driver ICs in the power driver circuit are controlled to output a positive voltage signal, and the second power output terminals of the M power driver ICs are controlled to output a negative voltage signal; Wherein, N is a positive integer, and M is a positive integer greater than N.

13. The method according to claim 12, characterized in that The controlling the first power output terminals of the M power driving ICs in the power driving circuit to output a positive voltage signal, and controlling the second power output terminals of the M power driving ICs to output a negative voltage signal, comprises: Determine a first ratio and a second ratio according to the required current size, wherein the first ratio is the ratio of the current size output by the first power output terminal of each of the M power driver ICs to the required current size, and the second ratio is the ratio of the current size output by the second power output terminal of each of the M power driver ICs to the required current size; Based on the first ratio, the current magnitude of the positive voltage signal output by the first power output terminal of the M power driver ICs is controlled, and based on the second ratio, the current magnitude of the negative voltage signal output by the second power output terminal of the M power driver ICs is controlled.

14. The method according to claim 9, characterized in that The obtaining the required current magnitude of the first load includes: Obtaining a display parameter corresponding to the first load, wherein the display parameter includes at least one of the following: a display brightness parameter, a display color parameter, and a refresh rate; The required current magnitude is determined according to the displayed parameters.

15. An electronic device, characterized in that: The invention comprises a power driving circuit as claimed in any one of claims 1 to 8.

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