Power supply fault diagnosis circuit, electronic equipment, fault diagnosis method and medium

Abstract

The invention provides a power supply fault diagnosis circuit, electronic equipment, a fault diagnosis method and a medium, which are applied to the technical field of power supply detection. Wherein the POL power supply circuit is connected with the first end of the digital integrated circuit and the first end of the signal detection circuit, and the second end of the POL power supply circuit is connected with the second end of the digital integrated circuit; the second end of the signal detection circuit is connected with the third end of the digital integrated circuit; the first end of the digital power supply circuit is connected with the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected with the fifth end of the digital integrated circuit; and the digital integrated circuit sends the acquired signal to the substrate management controller through the integrated circuit bus, so that the substrate management controller determines the fault type of the power supply according to the signal. Therefore, different signals in the POL power supply circuit are obtained through the signal detection circuit, so that the substrate management controller can determine the fault type according to the signals; and the detection efficiency and accuracy are improved on the whole.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply detection, and in particular to a power supply fault diagnosis circuit, electronic equipment, a fault diagnosis method and a medium. Background Art

[0002] With the development of electronic equipment technology, its performance is getting higher and higher, the demand is increasing, and the power supply system of electronic equipment is becoming more and more complex. When the power supply of electronic equipment fails, it is particularly important to quickly diagnose the type of failure.

[0003] The main power supply of current electronic devices is realized through POL power supply and digital power supply. Among them, POL power supply and digital power supply are respectively connected to the corresponding pins on the complex programmable logic device (CPLD). The principle of its circuit is: CPLD monitors the PG signal of the POL power supply and transmits it to the baseboard management controller (BMC) through the I2C communication protocol. The BMC log records the specific power supply that fails, but cannot distinguish the specific fault type of the POL power supply. If a digital power supply with an I2C communication protocol fails, the information of the relevant registers can be read through the serial port to determine the specific type of power supply fault, but this power supply fault diagnosis is not intuitive, the diagnostic efficiency is low, and the fault type cannot be quickly and accurately located.

[0004] It can be seen that how to improve the intuitiveness, diagnostic efficiency, diagnostic speed and diagnostic accuracy of power supply fault diagnosis is a problem that technical personnel in this field need to solve. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a power supply fault diagnosis circuit, electronic equipment, fault diagnosis method and medium, which can solve the problems of the prior art that power supply fault diagnosis is not intuitive, the diagnostic efficiency is low, and the fault type cannot be quickly and accurately located.

[0006] To solve the above technical problems, an embodiment of the present invention provides a power supply fault diagnosis circuit, including: a POL power supply circuit, a digital power supply circuit, a digital integrated circuit, a baseboard management controller and a signal detection circuit;

[0007] Wherein, a first end of the POL power supply circuit is connected to a first end of the digital integrated circuit and a first end of the signal detection circuit, and a second end of the POL power supply circuit is connected to a second end of the digital integrated circuit; and is used to send a first initial signal to the digital integrated circuit;

[0008] The second end of the signal detection circuit is connected to the third end of the digital integrated circuit; it is used to obtain information data of the POL power supply circuit and output a fault signal corresponding to the information data to the digital integrated circuit so that the digital integrated circuit obtains the fault signal;

[0009] The first end of the digital power supply circuit is connected to the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected to the fifth end of the digital integrated circuit; used to send a second initial signal to the digital integrated circuit;

[0010] The digital integrated circuit sends a first initial signal, a fault signal and a second initial signal to the baseboard management controller through the integrated circuit bus, so that the baseboard management controller determines the fault type of the power supply according to the first initial signal, the fault signal and the second initial signal.

[0011] In some embodiments, the signal detection circuit includes: an enable fault detection circuit, an undervoltage fault detection circuit, and an overvoltage fault detection circuit;

[0012] wherein the first end of the enabling fault detection circuit is connected to the second end of the POL power supply circuit, the first end of the undervoltage fault detection circuit and the first end of the overvoltage fault detection circuit;

[0013] The second end of the enabling fault detection circuit is connected to the first end of the POL power supply circuit as the first end of the signal detection circuit;

[0014] The third terminal of the enabling fault detection circuit is connected to the first pin terminal of the third terminal of the digital integrated circuit;

[0015] The second terminal of the undervoltage fault detection circuit is connected to the second terminal of the overvoltage fault detection circuit and the third terminal of the POL power supply circuit;

[0016] The third terminal of the undervoltage fault detection circuit is connected to the second pin terminal of the third terminal of the digital integrated circuit;

[0017] The third terminal of the overvoltage fault detection circuit is connected to a third pin terminal of the third terminal of the digital integrated circuit.

[0018] In some embodiments, the enabling fault detection circuit is a first AND logic operation unit;

[0019] Wherein, the first end of the first AND logic operation unit is connected to the second end of the POL power supply circuit, the first end of the undervoltage fault detection circuit and the first end of the overvoltage fault detection circuit as the first end of the enabling fault detection circuit;

[0020] The second end of the first AND logic operation unit is connected to the first end of the POL power supply circuit as the second end of the enabling fault detection circuit;

[0021] The third terminal of the first AND logic operation unit is connected to the first pin terminal of the third terminal of the digital integrated circuit as the third terminal of the enabling fault detection circuit.

[0022] In some embodiments, the undervoltage fault detection circuit includes: a first comparator, a second AND logic operation unit, a first resistor, a second resistor, a third resistor, and a fourth resistor;

[0023] The first end of the first resistor is connected to the second end of the overvoltage fault detection circuit and the third end of the POL power supply circuit as the second end of the undervoltage fault detection circuit, and the second end of the first resistor is connected to the first end of the second resistor and the non-inverting input end of the first comparator;

[0024] A first end of the third resistor is connected to a reference voltage source, and a second end of the third resistor is connected to an inverting input end of the first comparator and a first end of a fourth resistor;

[0025] The second end of the fourth resistor is connected to the second end of the second resistor and is grounded;

[0026] The first end of the second AND logic operation unit is connected as the first end of the undervoltage fault detection circuit to the first end of the enable fault detection circuit, the second end of the POL power supply circuit and the first end of the overvoltage fault detection circuit;

[0027] The second terminal of the second AND logic operation unit is connected to the output terminal of the first comparator;

[0028] The third terminal of the second AND logic operation unit is connected to the second pin terminal of the third terminal of the digital integrated circuit as the third terminal of the undervoltage fault detection circuit.

[0029] In some embodiments, the overvoltage fault detection circuit includes: a second comparator, a third AND logic operation unit, a fifth resistor, a sixth resistor, a seventh resistor, and an eighth resistor;

[0030] Wherein, a first end of the fifth resistor is connected to a reference voltage source, and a second end of the fifth resistor is connected to a non-inverting input end of the second comparator and a first end of the sixth resistor;

[0031] The first end of the seventh resistor is connected to the second end of the undervoltage fault detection circuit and the third end of the POL power supply circuit as the second end of the overvoltage fault detection circuit, and the second end of the seventh resistor is connected to the inverting input end of the second comparator and the first end of the eighth resistor;

[0032] The second end of the eighth resistor is connected to the second end of the sixth resistor and is grounded;

[0033] The first end of the third AND logic operation unit is connected as the first end of the overvoltage fault detection circuit to the first end of the enable fault detection circuit, the second end of the POL power supply circuit and the first end of the undervoltage fault detection circuit;

[0034] A second terminal of the third AND logic operation unit is connected to the output terminal of the second comparator;

[0035] The third terminal of the third AND logic operation unit is connected to the third pin terminal of the third terminal of the digital integrated circuit as the third terminal of the overvoltage fault detection circuit.

[0036] In some embodiments, the present invention further includes: a first inductor, a ninth resistor, a first capacitor, a second capacitor, a second inductor, a tenth resistor, a third capacitor, and a fourth capacitor;

[0037] Wherein, the first end of the first inductor is connected to the fourth end of the POL power supply circuit, and the second end of the first inductor is connected to the first end of the first capacitor;

[0038] A first end of the ninth resistor is connected to the fifth end of the POL power supply circuit, and a second end of the ninth resistor is connected to the first end of the second capacitor and the second end of the POL power supply circuit;

[0039] The second end of the first capacitor and the second end of the second capacitor are grounded;

[0040] The first end of the second inductor is connected to the third end of the digital power supply circuit, and the second end of the second inductor is connected to the first end of the third capacitor;

[0041] A first end of the tenth resistor is connected to the fourth end of the digital power circuit, and a second end of the tenth resistor is connected to the first end of the fourth capacitor and the second end of the digital power circuit;

[0042] The second end of the third capacitor and the second end of the fourth capacitor are grounded.

[0043] In some embodiments, further comprising: a display;

[0044] The display is connected to the baseboard management controller via an integrated circuit bus, and is used to receive and display the fault type sent by the baseboard management controller via the integrated circuit bus.

[0045] In one aspect, the present invention further provides an electronic device, comprising the above-mentioned power supply fault diagnosis circuit.

[0046] On the one hand, the present invention also provides a power supply fault diagnosis method, which is applied to the above-mentioned power supply fault diagnosis circuit, comprising:

[0047] Obtain a first initial signal, a fault signal, and a second initial signal sent by the digital integrated circuit through an integrated circuit bus;

[0048] Determine whether the corresponding POL power circuit is faulty according to the first initial signal and the fault signal; if the POL power circuit is faulty, determine the fault type of the POL power circuit corresponding to the first initial signal and the fault signal through the fault information list;

[0049] Determine whether the corresponding digital power circuit is faulty based on the second initial signal; if the digital power circuit is faulty, obtain the register information of the digital power circuit through the integrated circuit bus, and determine the fault type of the digital power circuit corresponding to the register information through the register information list.

[0050] On the one hand, the present invention further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned power supply fault diagnosis method are implemented.

[0051] In one aspect, the present invention further provides a power supply fault diagnosis device, comprising:

[0052] Memory for storing computer programs;

[0053] A processor is used to execute a computer program to implement the steps of the above power supply fault diagnosis method.

[0054] In one aspect, the present invention further provides a computer program product, comprising a computer program / instruction, which implements the steps of the above-mentioned power supply fault diagnosis method when executed by a processor.

[0055] It can be seen from the above technical scheme that the present invention provides a power supply fault diagnosis circuit, including: a POL power supply circuit, a digital power supply circuit, a digital integrated circuit, a baseboard management controller and a signal detection circuit; wherein, the first end of the POL power supply circuit is connected to the first end of the digital integrated circuit and the first end of the signal detection circuit, and the second end of the POL power supply circuit is connected to the second end of the digital integrated circuit; used to send a first initial signal to the digital integrated circuit; the second end of the signal detection circuit is connected to the third end of the digital integrated circuit; used to obtain information data of the POL power supply circuit, and output a fault signal corresponding to the information data to the digital integrated circuit, so that the digital integrated circuit obtains the fault signal; the first end of the digital power supply circuit is connected to the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected to the fifth end of the digital integrated circuit; used to send a second initial signal to the digital integrated circuit; the digital integrated circuit sends the first initial signal, the fault signal and the second initial signal to the baseboard management controller through the integrated circuit bus, so that the baseboard management controller determines the fault type of the power supply according to the first initial signal, the fault signal and the second initial signal. It can be seen that the signal detection circuit in the present invention is connected to the POL power circuit, and is used to detect different data in the POL power circuit to obtain a corresponding fault signal, and the POL power circuit itself has a first initial signal, and the baseboard management controller determines the current fault type of the POL power circuit according to the fault signal and the first initial signal; the baseboard management controller determines the fault type of the digital power circuit according to the second initial signal. On the whole, the power supply fault diagnosis circuit provided by the present invention is more intuitive, efficient, and accurate in detecting the fault type of the power circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A schematic diagram of a power supply fault diagnosis circuit provided by an embodiment of the present invention;

[0058] Figure 2 A complete schematic diagram of a power supply fault diagnosis circuit provided by an embodiment of the present invention;

[0059] Figure 3 A flow chart of a power supply fault diagnosis method provided by an embodiment of the present invention;

[0060] Figure 4 A structural diagram of a power supply fault diagnosis device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] The terms "including" and "having" in the specification of the present invention and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0063] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0064] Next, a power supply fault diagnosis circuit provided by an embodiment of the present invention is described in detail. Figure 1 A schematic diagram of a power supply fault diagnosis circuit provided by an embodiment of the present invention, the power supply fault diagnosis circuit includes: a POL power supply circuit 1, a digital power supply circuit 2, a digital integrated circuit 3, a baseboard management controller 4 (Baseboard management controller, BMC) and a signal detection circuit 5. The connection relationship of the circuit is: the first end of the POL power supply circuit 1 is connected to the first end of the digital integrated circuit 3 and the first end of the signal detection circuit 5, and the second end of the POL power supply circuit 1 is connected to the second end of the digital integrated circuit 3; the second end of the signal detection circuit 5 is connected to the third end of the digital integrated circuit 3; the first end of the digital power supply circuit 2 is connected to the fourth end of the digital integrated circuit 3, and the second end of the digital power supply circuit 2 is connected to the fifth end of the digital integrated circuit 3; wherein the digital power supply circuit 2, the digital integrated circuit 3 and the baseboard management controller 4 are all provided with an integrated circuit bus, so the digital power supply circuit 2, the digital integrated circuit 3 and the baseboard management controller 4 are all connected to the integrated circuit bus.

[0065] In a specific embodiment, the POL power supply circuit 1 and the digital power supply circuit 2 are both used as power supplies to supply power to the subsequent system and the like; since the signal outputted from the output end of the POL power supply circuit 1 can only represent one type of fault of the POL power supply circuit, the present invention adds a signal detection circuit 5, wherein the signal detection circuit 5 is connected to the POL power supply circuit 1, and is used to obtain information data of the POL power supply circuit 1, and determine the corresponding fault signal according to the information data (the fault signal can represent other types of faults of the POL power supply circuit); the function of the digital integrated circuit 3 is to obtain the output signals of the POL power supply circuit 1 and the digital power supply circuit 2, wherein the output signal of the POL power supply circuit 1 includes the fault signal outputted by the signal detection circuit 5 in addition to the first initial signal thereof. The baseboard management controller 4 obtains the first initial signal, the fault signal and the second initial signal sent by the digital integrated circuit 3 according to the integrated circuit bus, wherein it is judged whether the corresponding POL power circuit 1 is faulty according to the first initial signal and the fault signal; if the POL power circuit 1 is faulty, the fault type of the POL power circuit 1 corresponding to the first initial signal and the fault signal is determined through the fault information list; whether the corresponding digital power circuit 2 is faulty is judged according to the second initial signal; if the digital power circuit 2 is faulty, the register information of the digital power circuit 2 is obtained through the integrated circuit bus, and the fault type of the digital power circuit 2 corresponding to the register information is determined through the register information list.

[0066] The circuit principle of the power supply fault diagnosis circuit provided by the present invention is as follows: the second end of the POL power supply circuit 1 outputs a first initial signal, and inputs it into the digital integrated circuit 3 through the second end of the digital integrated circuit 3; the first end of the signal detection circuit 5 and the second end of the signal detection circuit 5 obtain information data of the POL power supply circuit 1 through the first end of the POL power supply circuit 1 and the second end of the POL power supply circuit 1 respectively, and determine the fault signal corresponding to the information data according to its own electronic components, output it through the third end of the signal detection circuit 5, and input it into the digital integrated circuit 3 through the third end of the digital integrated circuit 3; the second end of the digital power supply circuit 2 outputs a second initial signal, and inputs it into the digital integrated circuit 3 through the fifth end of the digital integrated circuit 3; if If the signal level of the POL power circuit 1 changes, the first end of the digital integrated circuit 3 is used to send a stop power supply signal, and the signal is input into the POL power circuit 1 through the first end of the POL power circuit 1; if the signal level of the digital power circuit 2 changes, the fourth end of the digital integrated circuit 3 is used to send a stop power supply signal, and the signal is input into the digital power circuit 2 through the first end of the digital power circuit 2, so as to control whether the POL power circuit 1 and the digital power circuit 2 supply power; the digital integrated circuit 3 simultaneously sends a first initial signal, a fault signal, and a second initial signal to the baseboard management controller 4 through the integrated circuit bus, so that the baseboard management controller 4 determines the fault type of the power supply according to the first initial signal, the fault signal, and the second initial signal.

[0067] Among them, the digital power supply circuit can adopt a Controller+Powerstage power supply circuit; the digital integrated circuit can adopt a complex programmable logic device (CPLD); the integrated circuit bus can be an I2C (Inter-Integrated Circuit, I2C) bus, but it is not limited and can be set according to the needs of the user.

[0068] It can be seen from the above technical scheme that the present invention provides a power supply fault diagnosis circuit, including: a POL power supply circuit, a digital power supply circuit, a digital integrated circuit, a baseboard management controller and a signal detection circuit; wherein, the first end of the POL power supply circuit is connected to the first end of the digital integrated circuit and the first end of the signal detection circuit, and the second end of the POL power supply circuit is connected to the second end of the digital integrated circuit; used to send a first initial signal to the digital integrated circuit; the second end of the signal detection circuit is connected to the third end of the digital integrated circuit; used to obtain information data of the POL power supply circuit, and output a fault signal corresponding to the information data to the digital integrated circuit, so that the digital integrated circuit obtains the fault signal; the first end of the digital power supply circuit is connected to the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected to the fifth end of the digital integrated circuit; used to send a second initial signal to the digital integrated circuit; the digital integrated circuit sends the first initial signal, the fault signal and the second initial signal to the baseboard management controller through the integrated circuit bus, so that the baseboard management controller determines the fault type of the power supply according to the first initial signal, the fault signal and the second initial signal. It can be seen that the signal detection circuit in the present invention is connected to the POL power circuit, and is used to detect different data in the POL power circuit to obtain a corresponding fault signal, and the POL power circuit itself has a first initial signal, and the baseboard management controller determines the current fault type of the POL power circuit according to the fault signal and the first initial signal; the baseboard management controller determines the fault type of the digital power circuit according to the second initial signal. On the whole, the power supply fault diagnosis circuit provided by the present invention is more intuitive, efficient, and accurate in detecting the fault type of the power circuit.

[0069] In some embodiments, Figure 2 As shown, the signal detection circuit 5 includes: an enabling fault detection circuit 51, an undervoltage fault detection circuit 52 and an overvoltage fault detection circuit 53. The specific connection relationship of the circuit is: the first end of the enabling fault detection circuit 51 is connected to the second end of the POL power supply circuit 1, the first end of the undervoltage fault detection circuit 52 and the first end of the overvoltage fault detection circuit 53; the second end of the enabling fault detection circuit 51 is connected to the first end of the POL power supply circuit 1 as the first end of the signal detection circuit 5; the third end of the enabling fault detection circuit 51 is connected to the first pin end of the third end of the digital integrated circuit 3; the second end of the undervoltage fault detection circuit 52 is connected to the second end of the overvoltage fault detection circuit 53 and the third end of the POL power supply circuit 1; the third end of the undervoltage fault detection circuit 52 is connected to the second pin end of the third end of the digital integrated circuit 3; the third end of the overvoltage fault detection circuit 53 is connected to the third pin end of the third end of the digital integrated circuit 3.

[0070] In an embodiment, Figure 2The EN pin in the POL power supply circuit 1 serves as the first end of the POL power supply circuit 1, and is used to receive the control signal (P5V_EN) of the POL power supply circuit 1 sent by the digital integrated circuit 3; the PG pin in the POL power supply circuit 1 serves as the second end of the POL power supply circuit 1, and is used to send the first initial signal (P5V_PG_CPLD) to the digital integrated circuit 3; the VIN pin of the POL power supply circuit 1 serves as the third pin of the POL power supply circuit 1, and is used to access the P12V voltage; the SW pin of the POL power supply circuit 1 serves as the fourth pin of the POL power supply circuit 1, and is used to output the P5V voltage; the VCC pin of the POL power supply circuit 1 serves as the fifth pin of the POL power supply circuit 1. The EN pin in the digital power circuit 2 is used as the first end of the digital power circuit 2 to receive the control signal (P1V8_EN) of the digital power circuit 2 sent by the digital integrated circuit 3; the PG pin in the digital power circuit 2 is used as the second end of the digital power circuit 2 to send the second initial signal (P1V8_PG_CPLD) to the digital integrated circuit 3; the SW pin of the digital power circuit 2 is used as the third end of the digital power circuit 2 to output the voltage of P1V8; the VCC pin of the digital power circuit 2 is used as the fourth end of the digital power circuit 2; the VIN pin of the digital power circuit 2 is used as the fifth end of the digital power circuit 2 to access the voltage of P12V. Among them, the digital power circuit 2, the digital integrated circuit 3 and the baseboard management controller 4 all transmit data through the SDA and SCL data lines.

[0071] In an embodiment, Figure 2As shown, the enabling fault detection circuit 51 is a first AND logic operation unit PU1. The first end of the first AND logic operation unit PU1 is connected to the second end of the POL power supply circuit 1, the first end of the undervoltage fault detection circuit 52 and the first end of the overvoltage fault detection circuit 53 as the first end of the enabling fault detection circuit 51; the second end of the first AND logic operation unit PU1 is connected to the first end of the POL power supply circuit 1 as the second end of the enabling fault detection circuit 51; the third end of the first AND logic operation unit PU1 is connected to the first pin end of the third end of the digital integrated circuit 3 as the third end of the enabling fault detection circuit 51. The principle of the circuit is as follows: the first end of the first AND logic operation unit PU1 obtains the first initial signal (P5V_PG_CPLD) at the PG pin of the POL power supply circuit 1; at the same time, the second end of the first AND logic operation unit PU1 obtains the control signal (P5V_EN) at the EN pin of the POL power supply circuit 1, and the first AND logic operation unit PU1 performs an AND operation logic on the first initial signal and the control signal, and finally outputs an enable fault signal (P5V_PG_EN_CPLD) in the fault signal from the output end of the first AND logic operation unit PU1, and sends the enable fault signal (P5V_PG_EN_CPLD) to the digital integrated circuit 3 through the first pin end of the third end of the digital integrated circuit 3.

[0072] In an embodiment, Figure 2As shown, the undervoltage fault detection circuit 52 includes: a first comparator U1, a second AND logic operation unit PU2, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4. Among them, the first end of the first resistor R1 is connected to the second end of the overvoltage fault detection circuit 53 and the third end of the POL power supply circuit 1 as the second end of the undervoltage fault detection circuit 52, and the second end of the first resistor R1 is connected to the first end of the second resistor R2 and the non-inverting input end of the first comparator U1; the first end of the third resistor R3 is connected to the reference voltage source P3V3_STBY, and the second end of the third resistor R3 is connected to the inverting input end of the first comparator U1 and the first end of the fourth resistor R4; the second end of the fourth resistor R4 is connected to the second end of the second resistor R2 and is grounded; the first end of the second AND logic operation unit PU2 is connected to the first end of the enable fault detection circuit 51, the second end of the POL power supply circuit 1 and the first end of the overvoltage fault detection circuit 53 as the first end of the undervoltage fault detection circuit 52; the second end of the second AND logic operation unit PU2 is connected to the output end of the first comparator U1; the third end of the second AND logic operation unit PU2 is connected to the second pin end of the third end of the digital integrated circuit 3 as the third end of the undervoltage fault detection circuit 52. The principle of the circuit is as follows: the P12V voltage at the VIN pin of the POL power supply circuit 1 enters the first comparator U1 through the non-inverting input terminal of the first comparator U1 after being divided by the first resistor R1 and the second resistor R2; the voltage at the reference voltage source P3V3_STBY enters the first comparator U1 through the inverting input terminal of the first comparator U1 after being divided by the third resistor R3 and the fourth resistor R4; the first comparator U1 compares the voltage at the non-inverting input terminal with the voltage at the inverting input terminal, thereby outputting an undervoltage signal, and enters the second AND logic operation unit PU2 through the second terminal thereof. operation unit PU2; and the first end of the second AND logic operation unit PU2 obtains the first initial signal (P5V_PG_CPLD) at the PG1 pin of the POL power supply circuit 1; the second AND logic operation unit PU2 performs an AND operation logic on the first initial signal and the undervoltage signal, and finally outputs the undervoltage fault signal (P5V_P12V_UV_CPLD) in the fault signal from the output end of the second AND operation logic unit PU2, and sends the undervoltage fault signal (P5V_P12V_UV_CPLD) to the digital integrated circuit 3 through the second pin end of the third end of the digital integrated circuit 3.

[0073] In some embodiments, Figure 2As shown, the overvoltage fault detection circuit 53 includes: a second comparator U2, a third AND logic operation unit PU3, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7 and an eighth resistor R8. Among them, the first end of the fifth resistor R5 is connected to the reference voltage source P3V3_STBY, the second end of the fifth resistor R5 is connected to the in-phase input end of the second comparator U2 and the first end of the sixth resistor R6; the first end of the seventh resistor R7 is connected to the second end of the undervoltage fault detection circuit 52 and the third end of the POL power supply circuit 1 as the second end of the overvoltage fault detection circuit 53, and the second end of the seventh resistor R7 is connected to the inverting input end of the second comparator U2 and the first end of the eighth resistor R8; the second end of the eighth resistor R8 is connected to the second end of the sixth resistor R6 and is grounded; the first end of the third and logic operation unit PU3 is connected to the first end of the enable fault detection circuit 51, the second end of the POL power supply circuit 1 and the first end of the undervoltage fault detection circuit 52 as the first end of the overvoltage fault detection circuit 53; the second end of the third and logic operation unit PU3 is connected to the output end of the second comparator U2; the third end of the third and logic operation unit PU3 is connected to the third pin end of the third end of the digital integrated circuit 3 as the third end of the overvoltage fault detection circuit 53. The principle of the circuit is as follows: the P12V voltage at the VIN pin of the POL power supply circuit 1 enters the second comparator U2 through the inverting input terminal of the second comparator U2 after being divided by the seventh resistor R7 and the eighth resistor R8; the voltage at the reference voltage source P3V3_STBY enters the second comparator U2 through the non-inverting input terminal of the second comparator U2 after being divided by the fifth resistor R5 and the sixth resistor R7; the second comparator U2 compares the voltage at the non-inverting input terminal with the voltage at the inverting input terminal, thereby outputting an overvoltage signal, and enters the third AND logic operation unit PU3 through the second terminal thereof. Operation unit PU3; and the first end of the third AND operation unit PU3 obtains the first initial signal (P5V_PG_CPLD) at the PG1 pin of the POL power supply circuit 1; the third AND operation unit PU3 performs an AND operation logic on the first initial signal and the overvoltage signal, and finally outputs the overvoltage fault signal (P5V_P12V_OV_CPLD) in the fault signal from the output end of the third AND operation logic unit PU2, and sends the overvoltage fault signal (P5V_P12V_OV_CPLD) to the digital integrated circuit 3 through the third pin end of the third end of the digital integrated circuit 3.

[0074] Among them, for the signal detection circuit 5, the fault information list of its POL power supply circuit 1 is shown in Table 1. The baseboard management controller 4 obtains the fault type by comparing the high and low level states of the first initial signal (P5V_PG_CPLD), the enable fault signal (P5V_PG_EN_CPLD), the undervoltage fault signal (P5V_P12V_UV_P5V_CPLD), and the overvoltage fault signal (P5V_P12V_OV_P5V_CPLD) with the fault information list.

[0075] Table 1

[0076]

[0077] Among them, for the digital power circuit 2, the baseboard management controller 4 determines whether the corresponding digital power circuit 2 is faulty according to the second initial signal; if the digital power circuit 2 is faulty, the register information of the digital power circuit 2 is obtained through the integrated circuit bus, and the fault type of the digital power circuit corresponding to the register information is determined through the register information list. The register information list is shown in Table 2, Table 3 and Table 4.

[0078] Table 2

[0079]

[0080] Table 3

[0081]

[0082] Table 4

[0083]

[0084] For example: If the value of the 0x7A register of the digital power circuit (Controller+Power) is 0x80, and compared with the fault information list of the Controller+Power register, the fault is an overvoltage fault (Vout Over-voltage Fault); if the value of the 0x7A register of the Controller+Power is 0x10, and compared with the fault information list of the Controller+Power register, the fault is an undervoltage fault (Vout Under-voltage Fault); if the value of the 0x7B register of the Controller+Power is 0x80, and compared with the fault information list of the Controller+Power register, the fault is an overcurrent fault (IOUT Over-curent Fault); if the value of the 0x80 register of the Controller+Power is 0x02, and compared with the fault information list of the Controller+Power register, the fault is a driver fault (Driver Fault)

[0085] besides, Figure 2 The circuit shown also includes a display 6. The display is connected to the baseboard management controller via an integrated circuit bus, and is used to receive the fault type sent by the baseboard management controller via the integrated circuit bus and display it, so as to more intuitively observe the fault condition and fault type of the power supply.

[0086] besides, Figure 2The circuit shown also includes a first inductor L1, a ninth resistor R9, a first capacitor C1, a second capacitor C2, a second inductor L2, a tenth resistor R10, a third capacitor C3 and a fourth capacitor C4. The first inductor L1, the ninth resistor R9, the first capacitor C1 and the second capacitor C2 are electronic components connected to the periphery of the POL power supply circuit 1, and the second inductor L2, the tenth resistor R10, the third capacitor C3 and the fourth capacitor C4 are electronic components connected to the periphery of the digital power supply circuit 2. The connection relationship is as follows: the first end of the first inductor L1 is connected to the fourth end of the POL power circuit 1, and the second end of the first inductor L1 is connected to the first end of the first capacitor C1; the first end of the ninth resistor R9 is connected to the fifth end of the POL power circuit 1, and the second end of the ninth resistor R9 is connected to the first end of the second capacitor C2 and the second end of the POL power circuit 1; the second end of the first capacitor C1 and the second end of the second capacitor C2 are grounded; the first end of the second inductor L2 is connected to the third end of the digital power circuit 2, and the second end of the second inductor L2 is connected to the first end of the third capacitor C3; the first end of the tenth resistor R10 is connected to the fourth end of the digital power circuit 2, and the second end of the tenth resistor R10 is connected to the first end of the fourth capacitor C4 and the second end of the digital power circuit 2; the second end of the third capacitor C3 and the second end of the fourth capacitor C4 are grounded.

[0087] The principle is as follows: the first inductor L1 and the first capacitor C1 constitute an RC filter circuit at the fourth end of the POL power supply circuit 1, which is used to filter the input and output signals; the ninth resistor R9 and the second capacitor C2 play a role in adjusting the output voltage of the POL power supply circuit 1; the second inductor L2 and the third capacitor C3 constitute an RC filter circuit at the third end of the digital power supply circuit 2, which is used to filter the input and output signals; the tenth resistor R10 and the fourth capacitor C4 play a role in adjusting the output voltage of the digital power supply circuit 2.

[0088] It should be noted that the circuit provided by the present invention is only one possible implementation method, but is not limited to this implementation method and can be set according to the needs of the user.

[0089] In addition, the power supply fault diagnosis circuit also includes a redundant power supply, an overcurrent fault detection circuit, and an undercurrent fault protection circuit. Among them, when the baseboard management controller 4 detects that both the POL power supply circuit 1 and the digital power supply circuit 2 have a fault and stop working, the redundant power supply is controlled to replace the POL power supply circuit 1 and the digital power supply circuit 2 to supply power to the subsequent system, load, etc. The overcurrent fault detection circuit and the undercurrent fault detection circuit are divided into the signal detection circuit 2, which is used to determine whether the POL power supply circuit 1 is currently in an overcurrent fault or an undercurrent fault. The fault types detected by the POL power supply circuit 1 are further increased, and a redundant system is provided for the power supply of the system and the load.

[0090] It can be seen from the above technical scheme that the present invention provides a power supply fault diagnosis circuit, including: a POL power supply circuit, a digital power supply circuit, a digital integrated circuit, a baseboard management controller and a signal detection circuit; wherein, the first end of the POL power supply circuit is connected to the first end of the digital integrated circuit and the first end of the signal detection circuit, and the second end of the POL power supply circuit is connected to the second end of the digital integrated circuit; used to send a first initial signal to the digital integrated circuit; the second end of the signal detection circuit is connected to the third end of the digital integrated circuit; used to obtain information data of the POL power supply circuit, and output a fault signal corresponding to the information data to the digital integrated circuit, so that the digital integrated circuit obtains the fault signal; the first end of the digital power supply circuit is connected to the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected to the fifth end of the digital integrated circuit; used to send a second initial signal to the digital integrated circuit; the digital integrated circuit sends the first initial signal, the fault signal and the second initial signal to the baseboard management controller through the integrated circuit bus, so that the baseboard management controller determines the fault type of the power supply according to the first initial signal, the fault signal and the second initial signal. It can be seen that the signal detection circuit in the present invention is connected to the POL power circuit, and is used to detect different data in the POL power circuit to obtain a corresponding fault signal, and the POL power circuit itself has a first initial signal, and the baseboard management controller determines the current fault type of the POL power circuit according to the fault signal and the first initial signal; the baseboard management controller determines the fault type of the digital power circuit according to the second initial signal. On the whole, the power supply fault diagnosis circuit provided by the present invention is more intuitive, efficient, and accurate in detecting the fault type of the power circuit.

[0091] On the one hand, the present invention also provides an electronic device, including the above-mentioned power supply fault diagnosis circuit, and having the same beneficial effects. The embodiment of the electronic device is the same as the embodiment of the above-mentioned power supply fault diagnosis circuit, so the present invention will not be described in detail here.

[0092] The electronic device may be a server or a switch, which is not limited in the present invention.

[0093] Figure 3 A flowchart of a power supply fault diagnosis method provided by an embodiment of the present invention is applied to the above-mentioned power supply fault diagnosis circuit, comprising the following steps:

[0094] S10: Obtain a first initial signal, a fault signal, and a second initial signal sent by the digital integrated circuit through an integrated circuit bus.

[0095] S11: judging whether the corresponding POL power circuit is faulty according to the first initial signal and the fault signal; if the POL power circuit is faulty, determining the fault type of the POL power circuit corresponding to the first initial signal and the fault signal through a fault information list.

[0096] S12: Determine whether the corresponding digital power circuit is faulty based on the second initial signal; if the digital power circuit is faulty, obtain the register information of the digital power circuit through the integrated circuit bus, and determine the fault type of the digital power circuit corresponding to the register information through the register information list.

[0097] In the embodiment, the second end of the POL power supply circuit 1 in the power supply fault diagnosis circuit outputs a first initial signal, and inputs it into the digital integrated circuit 3 through the second end of the digital integrated circuit 3; the first end of the signal detection circuit 5 and the second end of the signal detection circuit 5 respectively obtain information data of the POL power supply circuit 1 through the first end of the POL power supply circuit 1 and the second end of the POL power supply circuit 1, and determine the fault signal corresponding to the information data according to its own electronic components, output it through the third end of the signal detection circuit 5, and input it into the digital integrated circuit 3 through the third end of the digital integrated circuit 3; the second end of the digital power supply circuit 2 outputs a second initial signal, and inputs it into the digital integrated circuit 3 through the fifth end of the digital integrated circuit 3; if the level of the signal of the POL power supply circuit 1 changes, the first end of the digital integrated circuit 3 is used to send a power supply stop signal, and input it into the POL power supply circuit 1 through the first end of the POL power supply circuit 1; if the digital power supply circuit 2 The signal level changes, the fourth end of the digital integrated circuit 3 is used to send a stop power supply signal, and the signal is input into the digital power supply circuit 2 through the first end of the digital power supply circuit 2, so as to control whether the POL power supply circuit 1 and the digital power supply circuit 2 are powered; at this time, the baseboard management controller obtains the first initial signal, the fault signal and the second initial signal sent by the digital integrated circuit through the integrated circuit bus; then, according to the first initial signal and the fault signal, it is determined whether the corresponding POL power supply circuit is faulty; if the POL power supply circuit is faulty, the fault type of the POL power supply circuit corresponding to the first initial signal and the fault signal is determined through the fault information list (Table 1); according to the second initial signal, it is determined whether the corresponding digital power supply circuit is faulty; if the digital power supply circuit is faulty, the register information of the digital power supply circuit is obtained through the integrated circuit bus, and the fault type of the digital power supply circuit corresponding to the register information is determined through the register information list (Table 2, Table 3 and Table 4).

[0098] The present invention provides a power supply fault diagnosis method, including: obtaining a first initial signal, a fault signal, and a second initial signal sent by a digital integrated circuit through an integrated circuit bus; judging whether the corresponding POL power supply circuit is faulty according to the first initial signal and the fault signal; if the POL power supply circuit is faulty, determining the fault type of the POL power supply circuit corresponding to the first initial signal and the fault signal through a fault information list; judging whether the corresponding digital power supply circuit is faulty according to the second initial signal; if the digital power supply circuit is faulty, obtaining the register information of the digital power supply circuit through the integrated circuit bus, and determining the fault type of the digital power supply circuit corresponding to the register information through a register information list. It can be seen that the present invention uses an information list to compare the acquired signals to determine the fault type. On the whole, the power supply fault diagnosis method provided by the present invention is more intuitive, efficient, and accurate in detecting the fault type of the power supply circuit.

[0099] Figure 4 A structural diagram of a power supply fault diagnosis device provided by an embodiment of the present invention, such as Figure 4 As shown, the power supply fault diagnosis device includes: a memory 60, for storing a computer program;

[0100] The processor 61 is used to implement the steps of the power supply fault diagnosis method in the above embodiment when executing the computer program.

[0101] The power supply fault diagnosis device provided in this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer, or a desktop computer.

[0102] Among them, the processor 61 may include one or more processing cores, such as a 4-core processor, an 8-core processor, etc. The processor 61 can be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 61 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 61 may be integrated with a graphics processing unit (GPU), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 61 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0103] The memory 60 may include one or more computer-readable storage media, which may be non-transitory. The memory 60 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 60 is at least used to store the following computer program 601, wherein, after the computer program is loaded and executed by the processor 61, it can implement the relevant steps of the power supply fault diagnosis method disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 60 may also include an operating system 602 and data 603, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 602 may include Windows, Unix, Linux, etc.

[0104] In some embodiments, the power supply fault diagnosis device may further include a display screen 62 , an input / output interface 63 , a communication interface 64 , a power supply 65 , and a communication bus 66 .

[0105] Those skilled in the art will understand that Figure 4 The structure shown in the figure does not constitute a limitation on the power supply fault diagnosis device, and may include more or fewer components than those shown in the figure.

[0106] It is understandable that if the power supply fault diagnosis method in the above embodiment 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 such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the current technology, 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 to execute all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk or optical disk, etc. Various media that can store program codes.

[0107] Based on this, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the power supply fault diagnosis method as described above are implemented.

[0108] Based on this, an embodiment of the present invention further provides a computer program product, including a computer program / instruction, which implements the steps of the above-mentioned power supply fault diagnosis method when executed by a processor.

[0109] The above describes in detail a power supply fault diagnosis circuit, electronic device, fault diagnosis method and medium provided by an embodiment of the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0110] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0111] The above is a detailed introduction to a power supply fault diagnosis circuit, electronic device, fault diagnosis method and medium provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A power supply fault diagnosis circuit, characterized in that: include: POL power circuit, digital power circuit, digital integrated circuit, baseboard management controller and signal detection circuit; Wherein, the first end of the POL power supply circuit is connected to the first end of the digital integrated circuit and the first end of the signal detection circuit, and the second end of the POL power supply circuit is connected to the second end of the digital integrated circuit; and is used to send a first initial signal to the digital integrated circuit; The second end of the signal detection circuit is connected to the third end of the digital integrated circuit; it is used to obtain information data of the POL power supply circuit and output a fault signal corresponding to the information data to the digital integrated circuit, so that the digital integrated circuit obtains the fault signal; The first end of the digital power supply circuit is connected to the fourth end of the digital integrated circuit, and the second end of the digital power supply circuit is connected to the fifth end of the digital integrated circuit; used to send a second initial signal to the digital integrated circuit; The digital integrated circuit sends the first initial signal, the fault signal and the second initial signal to the baseboard management controller through the integrated circuit bus, so that the baseboard management controller determines the fault type of the power supply according to the first initial signal, the fault signal and the second initial signal.

2. The power supply fault diagnosis circuit according to claim 1, characterized in that: The signal detection circuit includes: an enabling fault detection circuit, an undervoltage fault detection circuit and an overvoltage fault detection circuit; Wherein, the first end of the enabling fault detection circuit is connected to the second end of the POL power supply circuit, the first end of the undervoltage fault detection circuit and the first end of the overvoltage fault detection circuit; The second end of the enabling fault detection circuit is connected to the first end of the POL power supply circuit as the first end of the signal detection circuit; The third terminal of the enabling fault detection circuit is connected to the first pin terminal of the third terminal of the digital integrated circuit; The second end of the undervoltage fault detection circuit is connected to the second end of the overvoltage fault detection circuit and the third end of the POL power supply circuit; The third terminal of the undervoltage fault detection circuit is connected to the second pin terminal of the third terminal of the digital integrated circuit; The third terminal of the overvoltage fault detection circuit is connected to a third pin terminal of the third terminal of the digital integrated circuit.

3. The power supply fault diagnosis circuit according to claim 2, characterized in that: The enabling fault detection circuit is a first AND logic operation unit; Wherein, the first end of the first AND logic operation unit is connected as the first end of the enable fault detection circuit to the second end of the POL power supply circuit, the first end of the undervoltage fault detection circuit and the first end of the overvoltage fault detection circuit; The second end of the first AND logic operation unit is connected to the first end of the POL power supply circuit as the second end of the enable fault detection circuit; The third terminal of the first AND logic operation unit is connected to the first pin terminal of the third terminal of the digital integrated circuit as the third terminal of the enabling fault detection circuit.

4. The power supply fault diagnosis circuit according to claim 2, characterized in that: The undervoltage fault detection circuit comprises: a first comparator, a second AND logic operation unit, a first resistor, a second resistor, a third resistor and a fourth resistor; The first end of the first resistor is connected to the second end of the overvoltage fault detection circuit and the third end of the POL power supply circuit as the second end of the undervoltage fault detection circuit, and the second end of the first resistor is connected to the first end of the second resistor and the non-inverting input end of the first comparator; A first end of the third resistor is connected to a reference voltage source, and a second end of the third resistor is connected to an inverting input end of the first comparator and a first end of the fourth resistor; The second end of the fourth resistor is connected to the second end of the second resistor and is grounded; The first end of the second AND logic operation unit is connected as the first end of the undervoltage fault detection circuit to the first end of the enable fault detection circuit, the second end of the POL power supply circuit and the first end of the overvoltage fault detection circuit; The second terminal of the second AND logic operation unit is connected to the output terminal of the first comparator; The third terminal of the second AND logic operation unit is connected to the second pin terminal of the third terminal of the digital integrated circuit as the third terminal of the undervoltage fault detection circuit.

5. The power supply fault diagnosis circuit according to claim 2, characterized in that: The overvoltage fault detection circuit comprises: a second comparator, a third AND logic operation unit, a fifth resistor, a sixth resistor, a seventh resistor and an eighth resistor; Wherein, a first end of the fifth resistor is connected to a reference voltage source, and a second end of the fifth resistor is connected to a non-inverting input end of the second comparator and a first end of the sixth resistor; The first end of the seventh resistor is connected to the second end of the undervoltage fault detection circuit and the third end of the POL power supply circuit as the second end of the overvoltage fault detection circuit, and the second end of the seventh resistor is connected to the inverting input end of the second comparator and the first end of the eighth resistor; The second end of the eighth resistor is connected to the second end of the sixth resistor and is grounded; The first end of the third AND logic operation unit is connected as the first end of the overvoltage fault detection circuit to the first end of the enable fault detection circuit, the second end of the POL power supply circuit and the first end of the undervoltage fault detection circuit; The second terminal of the third AND logic operation unit is connected to the output terminal of the second comparator; The third end of the third AND logic operation unit is connected to the third pin end of the third end of the digital integrated circuit as the third end of the overvoltage fault detection circuit.

6. The power supply fault diagnosis circuit according to claim 1, characterized in that: Also includes: A first inductor, a ninth resistor, a first capacitor, a second capacitor, a second inductor, a tenth resistor, a third capacitor, and a fourth capacitor; Wherein, the first end of the first inductor is connected to the fourth end of the POL power supply circuit, and the second end of the first inductor is connected to the first end of the first capacitor; The first end of the ninth resistor is connected to the fifth end of the POL power supply circuit, and the second end of the ninth resistor is connected to the first end of the second capacitor and the second end of the POL power supply circuit; The second end of the first capacitor and the second end of the second capacitor are grounded; The first end of the second inductor is connected to the third end of the digital power supply circuit, and the second end of the second inductor is connected to the first end of the third capacitor; The first end of the tenth resistor is connected to the fourth end of the digital power circuit, and the second end of the tenth resistor is connected to the first end of the fourth capacitor and the second end of the digital power circuit; The second end of the third capacitor and the second end of the fourth capacitor are grounded.

7. The power supply fault diagnosis circuit according to any one of claims 1 to 6, characterized in that: Also includes: monitor; The display is connected to the baseboard management controller via the integrated circuit bus, and is used to receive and display the fault type sent by the baseboard management controller via the integrated circuit bus.

8. An electronic device, characterized in that: The invention comprises the power supply fault diagnosis circuit as described in any one of claims 1 to 7.

9. A power supply fault diagnosis method, characterized in that: The power supply fault diagnosis circuit as claimed in claim 1 comprises: Obtain a first initial signal, a fault signal, and a second initial signal sent by the digital integrated circuit through an integrated circuit bus; Determine whether the corresponding POL power circuit is faulty according to the first initial signal and the fault signal; if the POL power circuit is faulty, determine the fault type of the POL power circuit corresponding to the first initial signal and the fault signal through a fault information list; Determine whether the corresponding digital power supply circuit is faulty based on the second initial signal; if the digital power supply circuit is faulty, obtain the register information of the digital power supply circuit through the integrated circuit bus, and determine the fault type of the digital power supply circuit corresponding to the register information through the register information list.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the power supply fault diagnosis method according to claim 1 are implemented.

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