Chip system, and related power supply control method

Abstract

A chip system, and a related power supply control method. A power management IC (102) provides a first voltage signal (AVDD) to a display driving chip (103) by means of a voltage output end (1022), and monitors the voltage value of the first voltage signal (AVDD) by means of a feedback circuit (1023) under a first configuration parameter. Under the first voltage signal (AVDD), the display driving chip (103) drives a display module (101) to perform scanning, and before switching from a non-display area pixel to a display area pixel, the display driving chip sends a first control signal to the feedback circuit (1023). The power management IC (102) receives the first control signal by means of the feedback circuit (1023), and configures the feedback circuit (1023) to monitor the voltage value of the first voltage signal (AVDD) under a second configuration parameter. When the voltage value of the first voltage signal (AVDD) is not equal to a target value, the voltage value of a voltage input end (1021) is adjusted by means of the feedback circuit (1023) under the second configuration parameter, so as to control the the first voltage signal (AVDD), which is provided by the voltage output end (1022), to the target value. By using the power management IC (102), a stable voltage can be output to quickly adapt to a change in a load current, and power consumption can also be reduced.

Description

Chip system and related power supply control method

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on February 8, 2024, with application number 202410177014.4, and priority to the Chinese patent application entitled “Chip System and Related Power Supply Control Method,” all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of smart terminals, and in particular to chip systems and related power supply control methods. Background Art

[0003] With the development of display technology, the technology of active matrix organic light-emitting diode (AMOLED) display modules has become increasingly mature and is increasingly used in various display fields. At the current application stage of display modules, the power supply of display modules is mainly through the power management chip (Power management IC, PMIC) with integrated multi-channel power control on the electronic device motherboard, which converts the battery power and then supplies it to the display module for use. On the display screen, the image is displayed by scanning the display module, a process called scanning the screen. Since the display module includes different pixel areas, and the load current required for different pixel areas is different, during the process of scanning the screen, the power supply of the power management chip PMIC is unstable due to the change in load current, causing problems such as abnormal image quality of the display screen.

[0004] Currently, existing solutions to address unstable power supply from power management chips typically require the chip to consume significant power. Therefore, ensuring stable power supply at low power consumption while minimizing display quality issues, such as display quality issues, is a pressing issue. Summary of the Invention

[0005] The embodiments of the present application provide a chip system and a related power supply control method, which can enable the power management chip to quickly adapt to changes in load current and output a stable voltage in a low-power state, thereby improving power supply performance and further improving the display quality of the display module.

[0006] In a first aspect, an embodiment of the present application provides a chip system, which is applied to an electronic device, wherein the electronic device includes a display module, and the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is connected to the display module and the power management chip respectively; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; the power management chip is used to provide a first voltage signal to the display driver chip through the voltage output terminal, and dynamically adjust the voltage value of the first voltage signal through the feedback circuit under a first configuration parameter; the display driver chip is used to drive the display module to perform pixel scanning under the first voltage signal; before switching from non-display area pixels to display area pixels, a first control signal is sent to the feedback circuit; the power management chip is also used to: receive the first control signal through the feedback circuit, and configure the feedback circuit to dynamically adjust the voltage value of the first voltage signal under a second configuration parameter; when the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted through the feedback circuit under the second configuration parameter to control the first voltage signal provided by the voltage output terminal to the target value.

[0007] In the embodiment of the present application, when the display module scans pixels, when scanning pixels in the non-display area, the power supply current required by the load remains basically unchanged, which has little effect on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the first configuration parameter (i.e., the low-power configuration parameter) to reduce the power consumption of the power management chip. When switching from non-display area pixels to scanning display area pixels, the power supply current required by the load will change significantly during the switching, which has a greater impact on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the second configuration parameter (i.e., the high-power configuration parameter) in advance to shorten the voltage drop recovery time of the power management chip during the switching, and avoid problems such as abnormal image quality of the display module caused by unstable power supply of the power management chip due to changes in load current. Therefore, the power management chip can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thus improve the display quality of the display module.

[0008] In some embodiments, the first configuration parameter includes a first bandwidth value and / or a first duty cycle value; the second configuration parameter includes a second bandwidth value and / or a second duty cycle value; wherein the first bandwidth value and the second bandwidth value indicate the bandwidth of the feedback circuit, and the second bandwidth value is greater than the first bandwidth value; the first duty cycle value and the second duty cycle value indicate the duty cycle of the feedback circuit, and the second duty cycle value is greater than the first duty cycle value.

[0009] In the embodiment of the present application, since the first configuration parameter can be understood as a low-power configuration parameter of the feedback circuit, if the first configuration parameter includes a first bandwidth value, the first bandwidth value is configured to a smaller value; if the first configuration parameter includes a first duty cycle value, the first duty cycle value is configured to a smaller value. Since the second configuration parameter can be understood as a high-power configuration parameter of the feedback circuit, if the second configuration parameter includes a second bandwidth value, the second bandwidth value is configured to a larger value, and the second bandwidth value is greater than the first bandwidth value; if the second configuration parameter includes a second duty cycle value, the second duty cycle value is configured to a larger value, and the second duty cycle value is greater than the first duty cycle value. In the process of scanning pixels of the display module, when scanning pixels in the non-display area, the power supply current required by the load remains basically unchanged, and has little effect on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the first configuration parameter first, which can reduce the power consumption of the power management chip. When switching from pixels in the non-display area to pixels in the display area, the power supply current required by the load will change significantly during the switching, which will have a greater impact on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the second configuration parameters in advance to shorten the voltage drop recovery time of the power management chip during switching. This can avoid problems such as abnormal image quality of the display module caused by unstable power supply of the power management chip due to changes in load current. In this way, the power management chip can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thus improve the display quality of the display module.

[0010] In some embodiments, the feedback circuit includes a variable proportional integral differential circuit and / or an operational amplifier, a power management chip, and is further used to: receive a first control signal through the variable proportional integral differential circuit and / or the operational amplifier, and configure the bandwidth of the feedback circuit to a second bandwidth value.

[0011] In an embodiment of the present application, after the variable proportional integral differential circuit and / or operational amplifier of the feedback circuit receives the first control signal sent by the display driver chip, the power management chip can configure the bandwidth of the feedback circuit to a second bandwidth value to shorten the voltage drop recovery time of the power management chip, ensuring that when the load current changes (that is, when switching from non-display area pixels to display area pixels), the feedback circuit can more quickly monitor the abnormal output voltage value of the power management chip, and the feedback circuit can also more quickly adjust the output voltage value of the power management chip to the target value, avoiding problems such as abnormal image quality of the display module caused by unstable power supply of the power management chip due to changes in load current. Therefore, the power management chip can quickly adapt to changes in load current and output a stable voltage, thereby improving power supply performance and further improving the display quality of the display module.

[0012] In some embodiments, the feedback circuit further includes a logic processing circuit and a power management chip, and is further configured to: receive a first control signal through the logic processing circuit and configure the duty cycle of the feedback circuit to a second duty cycle value.

[0013] In an embodiment of the present application, after receiving the first control signal, the logic processing circuit of the feedback circuit can configure the duty cycle of the feedback circuit to a second duty cycle value through the logic processing circuit. When switching from non-display area pixels to display area pixels, the voltage drop of the first voltage signal is effectively controlled, and the feedback circuit can more quickly monitor the abnormal output voltage value of the power management chip. The feedback circuit can also more quickly adjust the output voltage value of the power management chip to the target value, avoiding problems such as abnormal image quality of the display module caused by unstable power supply of the power management chip due to changes in load current. Therefore, the power management chip can quickly adapt to changes in load current and output a stable voltage, thereby improving power supply performance and further improving the display quality of the display module.

[0014] In some embodiments, the display driver chip is further used to: send a second control signal to the feedback circuit after scanning the pixels in the display area; the power management chip is further used to: receive the second control signal through the feedback circuit, and configure the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the first configuration parameters.

[0015] In the embodiment of the present application, during the process of the display module scanning pixels, the load current will only change significantly when switching from non-display area pixels to display area pixels. When scanning non-display area pixels and when scanning display area pixels, the power supply current required by the load remains basically unchanged, and has little impact on the output voltage of the power management chip. Therefore, after switching from non-display area pixels to display area pixels, the display driver chip can send a second control signal (which can be understood as a control release signal of the first control signal) to the power management chip. After receiving the second control signal, the feedback circuit of the power management chip can reconfigure the feedback circuit 1023 to operate under the first configuration parameters, thereby reducing the power consumption of the power management chip.

[0016] In some embodiments, the display driver chip is specifically used to: output a first power supply current to the display module under a first voltage signal, and the first power supply current is used for the display module to scan pixels in a non-display area; output a second power supply current to the display module, and the second power supply current is used for the display module to scan pixels in a display area; the second power supply current is greater than the first power supply current.

[0017] In the embodiment of the present application, the supply current characteristics required by pixels in the display area and non-display area of ​​the display module are different. The first supply current required by pixels in the non-display area is generally lower because this area does not need to display an image and only needs to maintain the stability of the display module. The second supply current required by pixels in the display area is generally higher because this area needs to drive the pixels to display an image to ensure a clear image on the display module 101.

[0018] In some embodiments, the display area pixels and the non-display area pixels are N rows of pixels distributed in a rectangular array; the display driver chip is specifically used to: before scanning the target row, send a first control signal to the feedback circuit, and the target row is the row where the display area pixels are scanned for the first time among the N rows of pixels.

[0019] In an embodiment of the present application, the display module scans pixels in a row-by-row manner. The supply current required by the load remains essentially unchanged when scanning pixels in the non-display area and when scanning pixels in the display area, resulting in minimal impact on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to operate at a first configuration parameter, thereby reducing power consumption. When switching from non-display area pixels to display area pixels, i.e., switching from the row preceding the target row to the target row, the supply current required by the load changes significantly, significantly impacting the output voltage of the power management chip. Therefore, before scanning the target row, the display driver chip can send a first control signal to the feedback circuit. Upon receiving the first control signal, the power management chip can pre-configure the feedback circuit of the power management chip to operate at a second configuration parameter, thereby shortening the voltage drop recovery time of the power management chip during the switching operation. This can prevent problems such as unstable power supply to the power management chip due to changes in load current, which can cause abnormal image quality in the display module. Consequently, the power management chip can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thus enhance the display quality of the display module.

[0020] In a second aspect, an embodiment of the present application provides a power supply control method, which is applied to an electronic device, wherein the electronic device includes a display module and a chip system, the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is connected to the display module and the power management chip respectively; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; the method includes: providing a first voltage signal to the display driver chip through the voltage output terminal of the power management chip, and dynamically adjusting the voltage value of the first voltage signal through the feedback circuit under the first configuration parameters; driving the display module to perform pixel scanning through the display driver chip under the first voltage signal; sending a first control signal to the feedback circuit before switching from non-display area pixels to display area pixels; receiving the first control signal through the feedback circuit of the power management chip, and configuring the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the second configuration parameters; when the voltage value of the first voltage signal is not equal to the target value, adjusting the voltage value of the voltage input terminal through the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

[0021] In a third aspect, an embodiment of the present application provides an electronic device, which includes a display module and a chip system, wherein the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is connected to the display module and the power management chip respectively; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; the power management chip is used to provide a first voltage signal to the display driver chip through the voltage output terminal, and dynamically adjust the voltage value of the first voltage signal through the feedback circuit under the first configuration parameters; the display driver chip is used to drive the display module to perform pixel scanning under the first voltage signal; before switching from non-display area pixels to display area pixels, a first control signal is sent to the feedback circuit; the power management chip is also used to: receive the first control signal through the feedback circuit, and configure the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the second configuration parameters; when the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted through the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

[0022] In a fourth aspect, the present application provides a computer storage medium, characterized in that the computer storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method described in any one of the above second aspects.

[0023] In a fifth aspect, the present application provides a chip system, which includes a processor for supporting electronic devices to implement the functions involved in the second aspect above, for example, generating or processing the information involved in the power supply control method above. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the electronic device. The chip system can be composed of chips or can include chips and other discrete devices.

[0024] In a sixth aspect, the present application provides a computer program product, characterized in that the computer program includes instructions, which, when the computer program is executed by a computer, enable the computer to execute any one of the methods described in the second aspect above. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a schematic diagram of an electronic device provided in an embodiment of the present application.

[0026] FIG2 is a schematic diagram of a voltage drop provided in an embodiment of the present application.

[0027] FIG3 is a schematic diagram of a chip system provided in an embodiment of the present application.

[0028] FIG4 is a schematic diagram of another chip system provided in an embodiment of the present application.

[0029] FIG5 is a schematic diagram of a feedback circuit provided in an embodiment of the present application.

[0030] FIG6 is a schematic diagram of another feedback circuit provided in an embodiment of the present application.

[0031] FIG7 is a schematic diagram of another chip system provided in an embodiment of the present application.

[0032] FIG8 is a schematic diagram of a display module provided in an embodiment of the present application.

[0033] FIG9 is a flow chart of a power supply control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0035] The terms "first," "second," "third," and "fourth," etc., in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0036] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] The electronic device involved in the embodiments of the present application is introduced below:

[0038] Please refer to Figure 1, which is a schematic diagram of an electronic device provided in an embodiment of the present application. The electronic device 100 can be a watch, a mobile phone, a tablet computer, a personal digital assistant (PDA), an in-vehicle computer, a monitor, a television (TV), etc. The embodiment of the present application does not impose any particular restrictions on the specific form of the electronic device 100. In Figure 1, the electronic device 100 can include a display module 101, a power management chip 102, a display driver chip 103, and a processor 104.

[0039] The display module 101 may be a display module composed of a display panel, a driving circuit, a backlight system, and other parts. The display module 101 is generally used in various electronic devices, such as smart terminals, vehicles, household appliances, and the like. In some embodiments, as shown in FIG1 , the display module 101 may include a plurality of pixels arranged in a matrix. The display module 101 may include a display area and a non-display area, wherein the display area may also be referred to as an effective area, such as the BB area in FIG1 , which may be used to display an image; the non-display area may also be referred to as a blanking area, such as the AA area in FIG1 , that is, the AA area may be the surrounding area of ​​the BB area, which may be used to hide or block pixels and is usually not used to actually display an image. The display module 101 can be a liquid crystal display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED), a flexible light-emitting diode (FLED), Miniled, Microled, Micro-oLed, a quantum dot light-emitting diode (QLED), etc.

[0040] The power management chip 102 can be used to connect to the battery (not shown in Figure 1), the display driver chip 103, the processor 104, the internal memory (not shown in Figure 1), and the external memory (not shown in Figure 1). The power management chip 101 can receive input from the battery, convert the battery power, and then supply it to the display driver chip 103, the processor 104, the internal memory, the external memory, and other components for use, thereby providing power to the display driver chip 103, the processor 104, the internal memory, the external memory, and other components. The power management chip 102 can also be used to monitor parameters such as battery capacity, battery cycle count, and battery health status (leakage, impedance).

[0041] The display driver chip 103 (Display Driver Integrated Circuit, DDIC) can be used to control the pixels on the display module 101 so that the display module 101 displays images. The display driver chip 103 can receive power from the power management chip 102, and then convert the received power and supply it to the display module 101 for use. In some embodiments, the display driver chip 103 can receive image data sent by the processor 104. The display driver chip 103 can convert this image data into a signal format suitable for the display module 101, and then the display driver chip 103 can send the processed signal to the display module 101 to control the brightness and color of the pixels, thereby presenting a complete image on the display module 101.

[0042] It should be noted that the display area and non-display area of ​​the display module 101 require different power supply current characteristics. The power supply current required in the non-display area is generally lower because this area does not need to display an image and only needs to maintain the stability of the display module 101. The power supply current required in the display area is generally higher because this area needs to drive pixels to display an image to ensure that the image can be clearly displayed on the display module 101. Generally speaking, the power supply current required by the display area is greater than that required by the non-display area.

[0043] In the process of scanning the screen, it is necessary to scan multiple pixels arranged in a matrix form row by row (or column by column). In general, the non-display area surrounds the display area. During the scanning process, it is necessary to scan some pixels in the non-display area before scanning the pixels in the display area. There is a situation where the non-display area switches to the display area. When the scanning screen switches from the non-display area to the display area, the internal circuit of the display driver chip 103 can enter the working mode. The power load current of the display driver chip 103 changes from light load to heavy load, and the current increases instantaneously, causing the output voltage of the power management chip 102 to drop instantaneously. The unstable output voltage of the power management chip 102 will cause the display quality of the display module 101 to be abnormal. For example, as shown in Figure 2, Figure 2 is a schematic diagram of a voltage drop provided by an embodiment of the present application. In the process of scanning the image, it switches from the non-display area (blanking area) to the display area (active area). The power load current of the display driver chip 103 increases, and the power supply voltage has a momentary drop. The process of the power supply control system maintaining voltage stability is the drop recovery time. If the drop recovery time is too long, it will cause problems such as abnormal display of the display module 01.

[0044] It should also be noted that the display module 101 can repeatedly scan multiple pixels arranged in a matrix form according to the refresh rate (such as 120HZ, 90HZ, 60HZ, etc.) to display different images on the display module 101. By completely scanning multiple pixels arranged in a matrix form at one time, one frame of image can be presented on the display module 101. Then, by re-scanning multiple pixels arranged in a matrix form row by row from the first row, the next frame of image can be presented on the display module 101. If it is necessary to display multiple frames of images on the display module 101, it is necessary to repeatedly scan the pixels arranged in a matrix form multiple times. During each scanning process, there will be a situation of switching from the non-display area to the display area, which will lead to unstable power supply of the power management chip PMIC, causing problems such as abnormal image quality of the display module 101.

[0045] The processor 104 may include one or more processing units, for example, the processor 104 may include an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors. In some embodiments, the processor 104 may run an application, and after generating image data of the application, the image data may be sent to the display driver chip 103. The display driver chip 103 may control the display module 101 to scan a plurality of pixels arranged in a matrix row by row based on the received image data to display the image of the application on the display module 101.

[0046] In addition, the electronic device 100 may further include an internal memory, an external memory, etc. which are not shown in FIG. 1 .

[0047] Internal memory, also known as main memory, is typically volatile memory that loses its contents when power is removed. It includes both readable and writable RAM, which temporarily stores processor data and exchanges data with external memory or other external storage. It can serve as a temporary data storage medium for the operating system or other running programs.

[0048] The external memory is a non-volatile memory, and its stored contents will not be lost after a power outage. The external memory can be used for long-term storage of instructions and data involved in the operation of the processor 104, such as boot programs, operating systems, applications and data.

[0049] It is understood that the structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown, or combine or separate certain components, or arrange the components differently.

[0050] The following is an introduction to the chip system involved in the embodiments of this application:

[0051] The chip system provided in the embodiment of the present application can be applied to the above-mentioned electronic device 100, and can also be applied to other electronic devices. The following description will be made by taking the chip system applied to the electronic device 100 as an example. The electronic device 100 includes the above-mentioned display module 101, and the display module 101 includes display area pixels and non-display area pixels. The display area pixels can be pixels in the BB area in the above-mentioned Figure 1, and the non-display area pixels can be pixels in the AA area in the above-mentioned Figure 1. Please refer to Figure 3, which is a schematic diagram of a chip system provided in the embodiment of the present application. The chip system includes a power management chip 102 and a display driver chip 103. The display driver chip 103 is connected to the display module 101 and the power management chip 102 respectively; wherein the power management chip 102 includes a voltage input terminal 1021, a voltage output terminal 1022 and a feedback circuit 1023. In some embodiments, one end of the feedback circuit 1023 is connected to the voltage input terminal 1021, and the other end of the feedback circuit 1023 is connected to the voltage output terminal 1022.

[0052] The power management chip 102 is configured to provide a first voltage signal to the display driver chip 103 via the voltage output terminal 1022 , and dynamically adjust the voltage value of the first voltage signal via the feedback circuit 1023 under first configuration parameters.

[0053] Specifically, the power management chip 102 can perform voltage conversion on the power input to the voltage input terminal 1021 according to the operating voltage of the display driver chip 103 and can output a first voltage signal from the voltage output terminal 1022 to the display driver chip 103. The voltage value of the first voltage signal output from the voltage output terminal 1022 can be a target value, such as a target value of 7.6V. For example, as shown in Figure 4, Figure 4 is a schematic diagram of another chip system provided in an embodiment of the present application. The power management chip 102 can output a voltage signal (AVDD) to the display driver chip 103. The AVDD voltage signal can be the first voltage signal mentioned in this application. Optionally, the voltage input terminal 1021 and the voltage output terminal 1022 can be connected through a DC voltage converter (also known as a DC-DC converter). A DC voltage converter is a power stage circuit. The function of a DC voltage converter is to convert voltage from one level to another level according to demand to meet the voltage requirements of different circuits. The DC voltage converter can also adjust the output voltage to output a first voltage signal with a target voltage value from the voltage output terminal 1022.

[0054] The feedback circuit 1023 of the power management chip 102 can monitor the voltage value of the first voltage signal output by the voltage output terminal 1022 in real time. The feedback circuit 1023 can be used to dynamically adjust the output voltage of the power management chip 102 to ensure that the output voltage of the power management chip 102 always reaches the target value. The feedback circuit 1023 operates within a specific scope of authority and can be configured to operate under specific configuration parameters. It should be noted that the operating efficiency of the feedback circuit 1023 can be adjusted by changing the configuration parameters. In some high-power configurations, the operating efficiency of the feedback circuit 1023 is higher, that is, the feedback circuit 1023 can more quickly detect abnormal output voltage values ​​of the power management chip 102 and can more quickly adjust the output voltage value of the power management chip 102 to the target value, and the voltage drop recovery time is shorter. In some low-power configurations, the operating efficiency of the feedback circuit 1023 is lower, that is, the feedback circuit 1023 takes more time to detect abnormal output voltage values ​​of the power management chip 102 and also takes more time to adjust the output voltage value of the power management chip 102 to the target value, and the voltage drop recovery time is longer. The first configuration parameter can be understood as the low-power configuration parameter of the feedback circuit 1023. During the process of scanning pixels in the display module 101, when scanning pixels in the non-display area, the supply current required by the load remains essentially unchanged, which has little impact on the output voltage of the power management chip 102. Therefore, the feedback circuit 1023 of the power management chip 102 can be configured to operate under the first configuration parameter to reduce the power consumption of the power management chip 102.

[0055] The display driver chip 103 is configured to drive the display module 101 to scan pixels under a first voltage signal; and to send a first control signal to the feedback circuit 1023 before switching from non-display area pixels to display area pixels.

[0056] Specifically, the display driver chip 103 can be connected to the voltage output terminal 1022 of the power management chip 102. The display driver chip 103 can receive the first voltage signal output by the power management chip 102, and drive the display module 101 to perform pixel scanning based on the first voltage signal to display an image on the display module 101. Since the display module 101 needs to scan the non-display area pixels before scanning the display area pixels, there is a situation where the non-display area pixels are switched to the display area pixels. Since the load current of the non-display area pixels and the display area pixels is different due to the switch from scanning the non-display area pixels to scanning the display area pixels, the load current will change significantly, which will affect the voltage value of the first voltage signal output by the power management chip 102. In the present application, before switching (i.e., before switching from the non-display area pixels to the display area pixels), the display driver chip 103 can send a first control signal to the feedback circuit 1023 of the power management chip 102. The first control signal can be used to notify the power management chip 102 that it is about to switch from scanning the non-display area pixels to scanning the display area pixels.

[0057] The power management chip 102 is also used to: receive a first control signal through a feedback circuit 1023, and configure the feedback circuit 1023 to dynamically adjust the voltage value of the first voltage signal under second configuration parameters; when the voltage value of the first voltage signal is not equal to the target value, for example, less than the target value (or greater than the target value), the voltage value of the voltage input terminal 1021 is adjusted through the feedback circuit 1023 under the second configuration parameters to control the first voltage signal provided by the voltage output terminal 1022 to the target value.

[0058] Specifically, the second configuration parameter can be understood as a high-power configuration parameter for the feedback circuit 1023. During the process of pixel scanning by the display module 101, when switching from scanning pixels in the non-display area to scanning pixels in the display area, the power supply current required by the load will change significantly, which will have a significant impact on the output voltage of the power management chip 102. Therefore, the feedback circuit 1023 of the power management chip 102 can be configured in advance to operate under the second configuration parameter to shorten the voltage drop recovery time of the power management chip 102 during switching, thereby improving the power supply stability of the power management chip 102. After receiving the first control signal, the feedback circuit 1023 of the power management chip 102 can be configured to operate under the second configuration parameters, that is, the feedback circuit 1023 is configured to dynamically adjust the voltage value of the first voltage signal under the second configuration parameters to ensure that during switching (that is, when switching from non-display area pixels to display area pixels), the feedback circuit 1023 can more quickly detect the abnormal output voltage value of the power management chip 102, that is, if the voltage value of the first voltage signal is not equal to the target value, it is determined that the output voltage value of the power management chip 102 is abnormal. The feedback circuit 1023 can also more quickly adjust the output voltage value of the power management chip 102 to the target value to avoid problems such as abnormal image quality of the display module 101 caused by unstable power supply of the power management chip 102 due to changes in load current. Therefore, the power management chip 102 can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thereby improve the display quality of the display module 101.

[0059] In some embodiments, the first configuration parameter includes a first bandwidth value and / or a first duty cycle value; the second configuration parameter includes a second bandwidth value and / or a second duty cycle value; wherein the first bandwidth value and the second bandwidth value indicate the bandwidth of the feedback circuit 1023, and the second bandwidth value is greater than the first bandwidth value; the first duty cycle value and the second duty cycle value indicate the duty cycle of the feedback circuit 1023, and the second duty cycle value is greater than the first duty cycle value.

[0060] Specifically, the bandwidth of the feedback circuit 1023 refers to the frequency range over which the gain of the entire feedback circuit 1023 crosses 0 dB. The higher the bandwidth, the faster the feedback circuit 1023 responds to output changes, but also increases power consumption. Bandwidth is an important parameter for measuring the response speed and stability of the feedback circuit 1023. The duty cycle of the feedback circuit 1023 refers to the proportion of time the output signal is high in a cycle within the power management chip 102. A higher ratio indicates a higher duty cycle and higher power consumption, while a lower ratio indicates a lower duty cycle and lower power consumption. The power management chip 102 can control the output voltage by adjusting the proportion of time the output signal is high in a cycle. The first configuration parameter may include a first bandwidth value and / or a first duty cycle value; the second configuration parameter may include a second bandwidth value and / or a second duty cycle value. Since the first configuration parameter can be understood as a low-power configuration parameter for the feedback circuit 1023, if the first configuration parameter includes the first bandwidth value, the first bandwidth value is configured to be a smaller value; if the first configuration parameter includes the first duty cycle value, the first duty cycle value is configured to be a smaller value. Since the second configuration parameter can be understood as a high-power configuration parameter of the feedback circuit 1023, if the second configuration parameter includes a second bandwidth value, then the second bandwidth value is configured to be a larger value, and the second bandwidth value is greater than the first bandwidth value; if the second configuration parameter includes a second duty cycle value, then the second duty cycle value is configured to be a larger value, and the second duty cycle value is greater than the first duty cycle value. In the embodiment of the present application, during the process of scanning pixels of the display module 101, when scanning pixels in the non-display area, the power supply current required by the load remains substantially unchanged, and has little effect on the output voltage of the power management chip 102. Therefore, the feedback circuit 1023 of the power management chip 102 can be configured to operate under the first configuration parameter first, which can reduce the power consumption of the power management chip 102. When switching from pixels in the non-display area to pixels in the display area, the power supply current required by the load will change significantly during the switching, which will have a greater impact on the output voltage of the power management chip 102. Therefore, the feedback circuit 1023 of the power management chip 102 can be configured to work under the second configuration parameters first to shorten the voltage drop recovery time of the power management chip 102 during switching, and avoid problems such as abnormal image quality of the display module 101 caused by unstable power supply of the power management chip 102 due to changes in load current. Therefore, the power management chip 102 can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thus improve the display quality of the display module 101.

[0061] In some embodiments, the feedback circuit 1023 includes a variable proportional integral differential circuit and / or an operational amplifier, and the power management chip 102 is further used to: receive a first control signal through the variable proportional integral differential circuit and / or the operational amplifier, and configure the bandwidth of the feedback circuit 1023 to a second bandwidth value.

[0062] Specifically, as shown in Figure 5, Figure 5 is a schematic diagram of a feedback circuit provided in an embodiment of the present application. The feedback circuit 1023 may include a variable proportional integral differential circuit (Proportional, Integral, Derivative, PID), and / or an operational amplifier. The PID circuit is a control algorithm module that can be used to adjust the bandwidth of the feedback circuit 1023. The operational amplifier can also be used to adjust the bandwidth of the feedback circuit 1023. The operational amplifier can also be used for signal amplification and filtering, as well as for amplifying and processing feedback signals in the PID circuit. The operational amplifier can also be used for comparison, integration and differentiation operations to support various control functions of the power management chip 102. Before switching from non-display area pixels to display area pixels, the display driver chip 103 can send a control signal (i.e., a first control signal) to the PID circuit and / or operational amplifier of the feedback circuit 1023 to notify the power management chip 102 that it is about to switch from non-display area pixels to display area pixels. After the PID circuit and / or operational amplifier of the feedback circuit 1023 receives the first control signal, it adjusts the pole-zero position of the feedback circuit 1023 (i.e., the frequency range in which the gain of the feedback circuit 1023 crosses 0dB), and configures the bandwidth of the feedback circuit 1023 to the second bandwidth value, so as to shorten the voltage drop recovery time of the power management chip 102 during switching, and ensure that during switching (i.e., when switching from non-display area pixels to display area pixels), the feedback circuit 1023 can more quickly monitor the abnormal output voltage value of the power management chip 102, and the feedback circuit 1023 can also more quickly adjust the output voltage value of the power management chip 102 to the target value, avoiding problems such as abnormal image quality of the display module 101 caused by unstable power supply of the power management chip 102 due to changes in load current, so that the power management chip 102 can quickly adapt to changes in load current and output a stable voltage, thereby improving power supply performance and further improving the display quality of the display module 101.

[0063] In some embodiments, feedback circuit 1023 includes a PID circuit, which may include one or more of a resistor and a capacitor. The PID circuit may receive a first control signal and adjust the resistance and capacitance of the resistor and capacitor, respectively, to change the frequency range in which the gain of feedback circuit 1023 passes through 0 dB, i.e., the bandwidth of feedback circuit 1023.

[0064] In some embodiments, the feedback circuit 1023 includes an operational amplifier that can receive a first control signal and adjust a bias current of the operational amplifier to change the frequency range of 0 dB across which the gain of the feedback circuit 1023 passes, ie, the bandwidth of the feedback circuit 1023 .

[0065] In some embodiments, the feedback circuit 1023 includes a PID circuit and an operational amplifier, which respectively receive a first control signal. By adjusting the resistance value of the PID circuit, the capacitance value of the capacitor, and the bias current of the operational amplifier, the gain of the feedback circuit 1023 is changed to pass through the frequency range of 0dB, that is, the bandwidth of the feedback circuit 1023.

[0066] In some embodiments, the bandwidth of the feedback circuit 1023 can be configured to the second bandwidth value by one or more of decreasing the resistance of the resistor, decreasing the capacitance of the capacitor, and increasing the bias current of the operational amplifier.

[0067] In some embodiments, as shown in Figure 6, Figure 6 is a schematic diagram of another feedback circuit provided in an embodiment of the present application. The feedback circuit 1023 also includes a logic processing circuit, and the power management chip 102 is also used to: receive a first control signal through the logic processing circuit and configure the duty cycle of the feedback circuit 1023 to a second duty cycle value.

[0068] Specifically, the logic processing circuit is generally used to implement various control logic and protection functions, and the logic processing circuit can be used to adjust the duty cycle of the feedback circuit 1023. Optionally, before switching from scanning non-display area pixels to scanning display area pixels, the display driver chip 103 can send a control signal (i.e., a first control signal) to the logic processing circuit of the feedback circuit 1023 to notify the power management chip 102 that the switch from non-display area pixels to display area pixels is imminent. After the logic processing circuit of the feedback circuit 1023 receives the first control signal, the duty cycle of the feedback circuit 1023 can be configured to a second duty cycle value through the logic processing circuit. When switching from non-display area pixels to display area pixels, the voltage drop of the first voltage signal is effectively controlled, and the feedback circuit 1023 can more quickly monitor the abnormal output voltage value of the power management chip 102. The feedback circuit 1023 can also more quickly adjust the output voltage value of the power management chip 102 to the target value, avoiding problems such as abnormal image quality of the display module 101 caused by unstable power supply of the power management chip 102 due to changes in load current. Therefore, the power management chip 102 can quickly adapt to changes in load current and output a stable voltage, thereby improving power supply performance and further improving the display quality of the display module 101.

[0069] In some embodiments, as shown in Figure 7, Figure 7 is a schematic diagram of another chip system provided in an embodiment of the present application. The display driver chip 103 is also used to: send a second control signal to the feedback circuit 1023 after scanning the pixels in the display area; the power management chip 102 is also used to: receive the second control signal through the feedback circuit 1023, and configure the feedback circuit 1023 to dynamically adjust the voltage value of the first voltage signal under the first configuration parameters.

[0070] Specifically, the second control signal can be used to notify the power management chip 102 that scanning of the display area pixels has begun. In the process of the display module 101 scanning pixels, the load current will change significantly only when switching from scanning the non-display area to scanning the display area. When scanning the non-display area pixels and when scanning the display area pixels, the power supply current required by the load remains basically unchanged, and has little effect on the output voltage of the power management chip 102. Therefore, after switching from the non-display area pixels to the display area pixels, the display driver chip 103 can send a second control signal (which can be understood as a control release signal of the first control signal) to the power management chip 102. After receiving the second control signal, the feedback circuit 1023 of the power management chip 102 can reconfigure the feedback circuit 1023 to operate under the first configuration parameters, thereby reducing the power consumption of the power management chip 102.

[0071] In some embodiments, as shown in Figure 8, Figure 8 is a schematic diagram of a display module provided in an embodiment of the present application, the display area pixels and non-display area pixels of the display module 101 are N rows of pixels distributed in a rectangular array; the display driver chip 103 is specifically used to: before scanning the target row, send a first control signal to the feedback circuit 1023, and the target row is the row where the display area pixels are scanned for the first time among the N rows of pixels.

[0072] Specifically, the non-display area pixels may be pixels surrounding the display area pixels. The first few rows of N rows of pixels are non-display area pixels, the middle rows are display area pixels, and the row of N rows of pixels where the display area pixels are first scanned is the target row. The display module 101 scans pixels row by row. The power supply current required by the load remains essentially unchanged when scanning the non-display area pixels and when scanning the display area pixels, resulting in minimal impact on the output voltage of the power management chip 102. Therefore, the feedback circuit 1023 of the power management chip 102 can be configured to operate under the first configuration parameters, thereby reducing the power consumption of the power management chip 102. When switching from pixels in the non-display area to pixels in the display area, that is, when switching from the previous row of the scan target row to the scan target row, the power supply current required by the load will change significantly, which will have a greater impact on the output voltage of the power management chip 102. Therefore, before scanning the target row, the display driver chip 103 can send a first control signal to the feedback circuit 1023. After receiving the first control signal, the power management chip 102 can configure the feedback circuit 1023 of the power management chip 102 in advance to work under the second configuration parameters, so as to shorten the voltage drop recovery time of the power management chip 102 during switching, and avoid problems such as abnormal image quality of the display module 101 caused by unstable power supply of the power management chip 102 due to changes in load current. Therefore, the power management chip 102 can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption and improve power supply performance, thereby improving the display quality of the display module 101.

[0073] In some embodiments, the display driver chip 202 is specifically used to: output a first power supply current to the display module 101 under a first voltage signal, and the first power supply current is used for the display module 101 to scan pixels in a non-display area; output a second power supply current to the display module 101, and the second power supply current is used for the display module 101 to scan pixels in a display area; the second power supply current is greater than the first power supply current.

[0074] Specifically, the power supply current characteristics required by the display area pixels and the non-display area pixels in the display module 101 are different. The first power supply current required by the pixels in the non-display area is usually smaller, because this area does not need to display an image and only needs to maintain the stability of the display module 101. The second power supply current required by the pixels in the display area is usually larger, because this part needs to drive the pixels to display an image. The source (Source), gamma (Gamma) and gate drive (Gate On Array, GOA) and other circuits of the display driver chip 103 will draw a larger current from the first voltage signal to ensure that the image can be clearly displayed on the display module 101. In general, the second power supply current required by the pixels in the display area is greater than the first power supply current required by the pixels in the non-display area.

[0075] Please refer to Figure 9, which is a flow chart of a power supply control method provided in an embodiment of the present application. The embodiment of the present application provides a power supply control method, which is applied to an electronic device. The electronic device includes a display module and a chip system, the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is respectively connected to the display module and the power management chip; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit, which are described in detail as follows.

[0076] Step S301: providing a first voltage signal to a display driver chip via a voltage output terminal of a power management chip, and dynamically adjusting a voltage value of the first voltage signal via a feedback circuit under first configuration parameters.

[0077] Step S302 : driving the display module to perform pixel scanning under a first voltage signal via the display driver chip.

[0078] Step S303: before switching from the non-display area pixel to the display area pixel, sending a first control signal to the feedback circuit.

[0079] Step S304: receiving the first control signal through the feedback circuit of the power management chip, and configuring the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the second configuration parameter.

[0080] Step S305: When the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted by the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

[0081] In some embodiments, the first configuration parameter includes a first bandwidth value and / or a first duty cycle value; the second configuration parameter includes a second bandwidth value and / or a second duty cycle value; wherein the first bandwidth value and the second bandwidth value indicate the bandwidth of the feedback circuit, and the second bandwidth value is greater than the first bandwidth value; the first duty cycle value and the second duty cycle value indicate the duty cycle of the feedback circuit, and the second duty cycle value is greater than the first duty cycle value.

[0082] In some embodiments, the feedback circuit includes a variable proportional integral differential circuit and / or an operational amplifier, and the method further includes: receiving a first control signal through the variable proportional integral differential circuit and / or the operational amplifier of the power management chip to configure the bandwidth of the feedback circuit to a second bandwidth value.

[0083] In some embodiments, the feedback circuit further includes a logic processing circuit, and the method further includes: receiving a first control signal through the logic processing circuit of the power management chip, and configuring the duty cycle of the feedback circuit to a second duty cycle value.

[0084] In some embodiments, the method further includes: after scanning the pixels in the display area, sending a second control signal to the feedback circuit through the display driver chip; receiving the second control signal through the feedback circuit of the power management chip, and configuring the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the first configuration parameters.

[0085] In some embodiments, a display driver chip is used to drive a display module to perform pixel scanning under a first voltage signal, including: outputting a first power supply current to the display module under the first voltage signal through the display driver chip, the first power supply current being used for the display module to scan pixels in a non-display area; outputting a second power supply current to the display module, the second power supply current being used for the display module to scan pixels in a display area; the second power supply current is greater than the first power supply current.

[0086] In some embodiments, the display area pixels and the non-display area pixels are N rows of pixels distributed in a rectangular array; before switching from the non-display area pixels to scanning the display area pixels, a first control signal is sent to the feedback circuit, including: before scanning to the target row, sending the first control signal to the feedback circuit through the display driver chip, and the target row is the row where the display area pixels are scanned for the first time among the N rows of pixels.

[0087] In the embodiment of the present application, when the display module scans pixels, when scanning pixels in the non-display area, the power supply current required by the load remains basically unchanged, which has little effect on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the first configuration parameter (i.e., the low-power configuration parameter) to reduce the power consumption of the power management chip. When switching from non-display area pixels to scanning display area pixels, the power supply current required by the load will change significantly during the switching, which has a greater impact on the output voltage of the power management chip. Therefore, the feedback circuit of the power management chip can be configured to work under the second configuration parameter (i.e., the high-power configuration parameter) to shorten the voltage drop recovery time of the power management chip, thereby avoiding problems such as abnormal image quality of the display module caused by unstable power supply of the power management chip due to changes in load current. In this way, the power management chip can not only quickly adapt to changes in load current and output a stable voltage, but also reduce power consumption, improve power supply performance, and thus improve the display quality of the display module.

[0088] An embodiment of the present application provides an electronic device, which includes a display module and a chip system, wherein the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is connected to the display module and the power management chip respectively; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; the power management chip is used to provide a first voltage signal to the display driver chip through the voltage output terminal, and dynamically adjust the voltage value of the first voltage signal through the feedback circuit under a first configuration parameter; the display driver chip is used to drive the display module to perform pixel scanning under the first voltage signal; before switching from non-display area pixels to display area pixels, a first control signal is sent to the feedback circuit; the power management chip is also used to: receive the first control signal through the feedback circuit, and configure the feedback circuit to dynamically adjust the voltage value of the first voltage signal under a second configuration parameter; when the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted through the feedback circuit under the second configuration parameter to control the first voltage signal provided by the voltage output terminal to the target value.

[0089] The present application provides a computer storage medium, characterized in that the computer storage medium stores a computer program, and when the computer program is executed by a processor, any one of the above-mentioned power supply control methods is implemented.

[0090] An embodiment of the present application provides an electronic device, comprising a processor configured to support the electronic device in implementing the corresponding functions of any of the above-described power supply control methods. The electronic device may further comprise a memory coupled to the processor for storing program instructions and data necessary for the electronic device. The electronic device may further comprise a communication interface for communicating with other devices or a communication network.

[0091] The present application provides a chip system, which includes a processor for supporting an electronic device to implement the functions involved above, for example, generating or processing information involved in the above-mentioned power supply control method. In one possible design, the chip system also includes a memory, which is used to store program instructions and data necessary for the electronic device. The chip system can be composed of a chip or include a chip and other discrete devices.

[0092] The present application provides a computer program product, characterized in that the computer program includes instructions, and when the computer program is executed by a computer, the computer is caused to execute the above-mentioned power supply control method.

[0093] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0094] It should be noted that for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0095] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical or other forms.

[0096] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0097] In addition, the functional units in the embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0098] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server or a network device, etc., specifically a processor in a computer device) to execute all or part of the steps of the above-mentioned methods of each embodiment of the present application. Among them, the aforementioned storage medium may include: U disk, mobile hard disk, magnetic disk, optical disk, read-only memory (Read-Only Memory, abbreviated: ROM) or random access memory (Random Access Memory, abbreviated: RAM) and other media that can store program codes.

[0099] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A chip system, characterized in that: Applicable to electronic devices, the electronic devices include a display module, the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is respectively connected to the display module and the power management chip; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; The power management chip is configured to provide a first voltage signal to the display driver chip via the voltage output terminal, and dynamically adjust a voltage value of the first voltage signal via the feedback circuit under first configuration parameters; The display driver chip is configured to drive the display module to perform pixel scanning under the first voltage signal; and before switching from the non-display area pixels to the display area pixels, send a first control signal to the feedback circuit; The power management chip is further used for: receiving the first control signal through the feedback circuit, and configuring the feedback circuit to dynamically adjust the voltage value of the first voltage signal under second configuration parameters; When the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted by the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

2. The chip system according to claim 1, characterized in that The first configuration parameter includes a first bandwidth value and / or a first duty cycle value; the second configuration parameter includes a second bandwidth value and / or a second duty cycle value; wherein the first bandwidth value and the second bandwidth value indicate the bandwidth of the feedback circuit, and the second bandwidth value is greater than the first bandwidth value; the first duty cycle value and the second duty cycle value indicate the duty cycle of the feedback circuit, and the second duty cycle value is greater than the first duty cycle value.

3. The chip system according to claim 2, characterized in that: The feedback circuit includes a variable proportional integral differential circuit and / or an operational amplifier. The power management chip is further configured to: The first control signal is received through the variable proportional integral differential circuit and / or the operational amplifier, and the bandwidth of the feedback circuit is configured to be the second bandwidth value.

4. The chip system according to claim 2 or 3, characterized in that: The feedback circuit further includes a logic processing circuit, and the power management chip is further configured to: The first control signal is received by the logic processing circuit, and the duty cycle of the feedback circuit is configured to be the second duty cycle value.

5. The chip system according to any one of claims 1 to 4, characterized in that: The display driver chip is further configured to: send a second control signal to the feedback circuit after scanning a pixel in the display area; The power management chip is further configured to: receive the second control signal through the feedback circuit, and configure the feedback circuit to dynamically adjust the voltage value of the first voltage signal under the first configuration parameters.

6. The chip system according to any one of claims 1 to 5, characterized in that: The display driver chip is specifically used for: outputting a first power supply current to the display module under the first voltage signal, wherein the first power supply current is used by the display module to scan pixels in the non-display area; A second power supply current is output to the display module, where the second power supply current is used by the display module to scan pixels in the display area; the second power supply current is greater than the first power supply current.

7. The chip system according to any one of claims 1 to 6, characterized in that: The display area pixels and the non-display area pixels are N rows of pixels distributed in a rectangular array; the display driver chip is specifically used for: Before scanning to a target row, the first control signal is sent to the feedback circuit, where the target row is a row of pixels in the display area that is first scanned among the N rows of pixels.

8. A power supply control method, characterized in that: Applied to an electronic device, the electronic device includes a display module and a chip system, the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is respectively connected to the display module and the power management chip; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; the method includes: Providing a first voltage signal to the display driver chip through the voltage output terminal of the power management chip, and dynamically adjusting a voltage value of the first voltage signal through the feedback circuit under first configuration parameters; driving the display module to scan pixels under the first voltage signal via the display driver chip; and sending a first control signal to the feedback circuit before switching from the non-display area pixels to the display area pixels; The first control signal is received through the feedback circuit of the power management chip, and the feedback circuit is configured to dynamically adjust the voltage value of the first voltage signal under second configuration parameters; when the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted through the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

9. An electronic device, characterized in that: The electronic device includes a display module and a chip system, wherein the display module includes display area pixels and non-display area pixels; the chip system includes a power management chip and a display driver chip; the display driver chip is connected to the display module and the power management chip respectively; wherein the power management chip includes a voltage input terminal, a voltage output terminal and a feedback circuit; The power management chip is configured to provide a first voltage signal to the display driver chip via the voltage output terminal, and dynamically adjust a voltage value of the first voltage signal via the feedback circuit under first configuration parameters; The display driver chip is configured to drive the display module to perform pixel scanning under the first voltage signal; and before switching from the non-display area pixels to the display area pixels, send a first control signal to the feedback circuit; The power management chip is further used for: receiving the first control signal through the feedback circuit, and configuring the feedback circuit to dynamically adjust the voltage value of the first voltage signal under second configuration parameters; When the voltage value of the first voltage signal is not equal to the target value, the voltage value of the voltage input terminal is adjusted by the feedback circuit under the second configuration parameters to control the first voltage signal provided by the voltage output terminal to the target value.

10. A computer storage medium, characterized in that The computer storage medium stores a computer program, which implements the method according to claim 9 when executed by a processor.

11. A computer program product, characterized in that The computer program comprises instructions which, when executed by a computer or a processor, cause the computer or the processor to perform the method according to claim 9 .

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