A power supply circuit, a power supply method, a server, a product and a medium

Abstract

The application discloses a power supply circuit, a power supply method, a server, a product and a medium, relates to the technical field of server power supply, and disperses the total power demand of a server through a multi-power board parallel design, reduces the bus current of a single board connected to a first voltage to the safe bearing range of a MOS tube, reduces the risk of impact, matches the overcurrent protection threshold of an electronic fuse with the power setting of a single board, shortens the short-circuit protection response time, independently deploys power supply bricks for each board to realize local conversion of a second voltage, reduces the output current of a single board, combines a multi-board output end merging power supply design, disperses heat sources to eliminate accumulated heat and doubles the current passing capacity through a parallel path, and improves the heat dissipation and electrical design feasibility of a circuit board. The technical problems of MOS tube over-limiting, overcurrent protection delay, and circuit board heat accumulation and current passing difficulty caused by large current of a power supply in a high-power server are solved, and the technical effects of enhancing power supply reliability and optimizing energy efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of server power supply, and in particular to a power supply circuit, a power supply method, a server, a product and a medium. BACKGROUND

[0002] With the server performance improvement leading to the sharp increase of the whole machine power, the loss of the traditional 12V power supply architecture on the power transmission path presents exponential growth, for this reason, 54V (48V-60V range) power supply is introduced to reduce the transmission loss, and the 54V voltage is reduced to 12V by the parallel power supply bricks after passing through the electronic fuse on the power supply board, to supply power for the server mainboard and its internal devices.

[0003] Since the single node power of the current AI (Artificial Intelligence, Artificial Intelligence) server climbs to the kilowatt level, the power supply architecture faces the following bottlenecks: firstly, the 54V bus needs to bear about hundreds of amperes of current under high-power load, and the key elements (such as MOS (Metal-Oxide-Semiconductor, Metal-Oxide-Semiconductor) tube) in the existing electronic fuse are difficult to withstand this large current, and the overcurrent protection threshold must be set to be significantly higher than the working current, which causes the protection delay when the output is short-circuited, and there is a safety risk; secondly, the 12V bus current is as high as hundreds of amperes when the high-power output, and the centralized layout of multiple power supply bricks not only causes local heat accumulation, but also makes the PCB (Printed Circuit Board, Printed Circuit Board) heat dissipation design and large current flow capacity face challenges, which restricts the reliability and energy efficiency improvement of high-power servers.

[0004] Therefore, how to provide a solution to the above technical problems is a problem that those skilled in the art need to solve at present. SUMMARY

[0005] The present application provides a power supply circuit, a power supply method, a server, a product and a medium, relating to the technical field of server power supply, to at least solve the technical problems of MOS tube over-limit, overcurrent protection delay, and circuit board heat accumulation and flow difficulty caused by large current of 54V power supply in high-power servers in related technologies.

[0006] The present application provides a power supply circuit, comprising a plurality of interconnected power supply boards, each of the power supply boards comprising an input end, an output end, a plurality of electronic fuses and a plurality of power supply bricks, wherein:

[0007] The input end of the power board is connected to a first voltage, the first end of the electronic fuse is connected to the input end of the power board, the second end of the electronic fuse is connected to the first end of at least one power brick, the output end of the power board is connected to a power supply connector of a server mainboard and the second end of the power brick respectively, the second end of the power brick outputs a second voltage, and the second voltage is less than the first voltage.

[0008] The application further provides a power supply circuit and a server.

[0009] The application further provides a power supply method, which is applied to the power supply circuit.

[0010] When the input end of the plurality of mutually connected power boards in the power supply circuit is connected to a first voltage, the first voltage is transmitted to the first end of at least one power brick on the power board through a plurality of electronic fuses on the power board.

[0011] The first voltage inputted at the first end is converted into a second voltage by the power brick, and the second voltage is outputted from the second end.

[0012] The second voltage outputted from the output end of the power board is used to supply power to a server mainboard.

[0013] The application further provides a computer program product, which comprises computer programs / instructions, and the computer programs / instructions are executed by a processor to realize the steps of the power supply method.

[0014] The application further provides a computer readable storage medium, wherein the computer readable storage medium stores computer programs, and the computer programs are executed by a processor to realize the steps of the power supply method.

[0015] According to the application, the total power demand of a server is dispersed by the parallel connection of multiple power boards, the 54V bus current of a single board is reduced to the safe bearing range of a MOS tube, the risk of impact is reduced, the electronic fuse matches the power setting overcurrent protection threshold of a single board, and the response time of short-circuit protection is shortened; the power brick is independently deployed on each board to realize 12V local conversion, the 12V current of a single board is reduced, the output ends of multiple boards are combined to realize power supply, the heat source is dispersed to eliminate heat accumulation, and the through-flow capacity is doubled through the parallel connection path, and the heat dissipation and electrical design feasibility of a circuit board are improved. The technical problems of MOS tube over-limiting, overcurrent protection delay, and heat accumulation and through-flow difficulty of a circuit board caused by large current of a 54V power supply in a high-power server are solved, and the technical effects of enhancing power supply reliability and optimizing energy efficiency are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following embodiments are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0017] Figure 1 The structural schematic diagram of the first power supply circuit provided by the embodiments of the present application.

[0018] Figure 2 The structural schematic diagram of a centralized power supply circuit provided by the related art.

[0019] Figure 3 The structural schematic diagram of the second power supply circuit provided by the embodiments of the present application.

[0020] Figure 4 The structural schematic diagram of the first power supply board provided by the embodiments of the present application.

[0021] Figure 5 The structural schematic diagram of the second power supply board provided by the embodiments of the present application.

[0022] Figure 6 The structural schematic diagram of the third power supply circuit provided by the embodiments of the present application.

[0023] Figure 7 The structural schematic diagram of the fourth power supply circuit provided by the embodiments of the present application.

[0024] Figure 8 The structural schematic diagram of the third power supply board provided by the embodiments of the present application.

[0025] Figure 9 The structural schematic diagram of the fourth power supply board provided by the embodiments of the present application.

[0026] Figure 10 The structural schematic diagram of the monitoring component built by the AND gate provided by the embodiments of the present application.

[0027] Figure 11 The structural schematic diagram of the monitoring component built by the AND gate provided by the embodiments of the present application.

[0028] Figure 12 The structural schematic diagram of the fifth power supply circuit provided by the embodiments of the present application.

[0029] Figure 13 The structural schematic diagram of the sixth power supply circuit provided by the embodiments of the present application.

[0030] Figure 14 The structural schematic diagram of the fifth power supply board provided by the embodiments of the present application.

[0031] Figure 15 A step flow chart of a power supply method provided by an embodiment of the present application. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, any other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0033] It should be noted that, in the description of the present application, the terms “comprise”, “contain” or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. The terms “first”, “second” and the like in the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence.

[0034] In order to enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0035] Please refer to Figure 1 The embodiment of the present application provides a power supply circuit, which comprises a plurality of power panels 1 connected with each other, each power panel 1 comprising an input end, an output end, a plurality of electronic fuses 11 and a plurality of power bricks 12, wherein: the input end of the power panel 1 is connected to a first voltage, the first end of the electronic fuse 11 is connected to the input end of the power panel 1, the second end of the electronic fuse 11 is connected to the first end of at least one power brick 12, the output end of the power panel 1 is connected to the power connector of the server mainboard and the second end of the power brick 12 respectively, the second end of the power brick 12 outputs a second voltage, and the second voltage is less than the first voltage.

[0036] In the embodiment, the input ends of the power panels 1 are connected with each other and connected to the first voltage, wherein the first voltage can be a voltage value between 48V and 60V, and specifically can be 54V. Since the power supply of the server is provided by the plurality of power panels 1 in parallel, the total power demand of the server is divided into a plurality of independent sub-units for processing, assuming that the total power demand of the server is P, and the number of power panels 1 is n, then the power demand of each power panel 1 is P / n. Since the power of the single power panel 1 is reduced, the 54V bus current of the single power panel 1 is reduced ​As shown in Figure 2 , in the centralized power supply scheme in the related art, a 54V electronic fuse is arranged on a single power board, and multiple 54V-to-12V power bricks are arranged, and the single-board 54V bus current , compared with the centralized power supply scheme, the single-board 54V bus current is reduced from 111A to 27.8A, which is lower than the safety threshold of mainstream MOS tubes, thereby reducing the risk of MOS tube breakdown and increasing the selection flexibility of the electronic fuse 11 (Efuse). Further, since the single-board 54V bus current is reduced to 27.8A, the overcurrent protection threshold of the electronic fuse 11 on the power board 1 is set to (i.e. the single-board working current, i.e. the single-board 54V bus current), then by using the scheme of the present embodiment, the overcurrent protection threshold , compared with the centralized power supply scheme in the related art, the overcurrent protection threshold is reduced from 133A ( ) to 33.4A, and the short-circuit fault energy is reduced, and the short-circuit protection response time is shortened.

[0037] In the present embodiment, a plurality of power bricks 12 are further arranged on each power board 1, and the power bricks 12 can be built by DC-DC (Direct Current to Direct Current Converter, direct current to direct current converter) modules for voltage regulation. The first end of each power brick 12 is connected to the second end of the electronic fuse 11 to receive the first voltage (such as 54V) transmitted by the electronic fuse 11, and output the first voltage after being converted into a second voltage (such as 12V). Considering that the 12V output power of the single power board 1 is 1500W, the 12V current of the combined output of the plurality of power bricks 12 on the single power board 1 is , compared with the centralized power supply scheme in the related art, the 12V current of the combined output of the plurality of power bricks 12 on the single power board 1 is reduced from 500A ( ) to 125A, and the connectors and cables between the power board 1 and the server mainboard do not need to be selected to have high flow capacity, thereby reducing the material cost.

[0038] In the present embodiment, the power bricks 12 are dispersedly designed on the plurality of power boards 1, avoiding the aggregation of the power bricks 12 which have large heat dissipation, dispersing the heat source to solve the local heat accumulation problem, improving the flow capacity through the parallel paths of the power boards 1, and improving the feasibility of PCB thermal design and electrical design, thereby finally realizing the enhancement of high-power server power supply reliability and energy efficiency optimization.

[0039] As an optional embodiment, the number of power bricks 12 and electronic fuses 11 arranged on each power board 1 can be the same or different, such as Figure 3As shown, two power bricks 12 and two electronic fuses 11 are arranged on the first power board 1, and three power bricks 12 and three electronic fuses 11 are arranged on the second power board 1. The embodiment allows a single power board 1 to flexibly configure the number of internal power bricks 12 according to the target power requirement. A server with lower power requirement can use a power board 1 configured with fewer power bricks 12 (e.g., 2), while a server with higher power requirement can use a power board 1 configured with more power bricks 12 (e.g., 3 or more), which avoids the waste caused by configuring a power board 1 with excessive redundancy or capacity for a low-power server. In addition, the server system can select a combination composed of power boards 1 of different specifications (number of bricks) according to its actual power budget and redundancy requirement (e.g., N, N+1, 2N), more accurately match the requirement, and reduce the unused power capacity.

[0040] As another optional embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can be one-to-one, as shown in FIG. 2A. Figure 3 As shown, each power brick 12 has an independent protection channel (electronic fuse 11), and when a power brick 12 fails (e.g., short-circuit), the corresponding electronic fuse 11 will accurately fuse and isolate the faulty brick, without affecting the output of other power bricks 12 on the same board or the entire power board 1, maximizing the continuous power supply capability of the power board 1 and system availability. The fused electronic fuse 11 directly points to the faulty power brick 12, facilitating quick positioning and maintenance.

[0041] As another optional embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can also be one-to-many, i.e., the second end of one electronic fuse 11 is connected to the first end of multiple power bricks 12, as shown in FIG. 2B. Figure 4 As shown, for application scenarios with relatively small power, moderate reliability requirements, or cost sensitivity, multiple power bricks 12 can share one electronic fuse 11, reducing the number of required fuses and their driving / monitoring circuits, and reducing the material cost and design complexity of the power board 1.

[0042] As another optional embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can also be one-to-many, i.e., the second end of one electronic fuse 11 is connected to the first end of multiple power bricks 12, as shown in FIG. 2B. Figure 5 As shown, multiple parallel electronic fuses 11 are configured for a single (high-power) power brick 12, so that even if one of the electronic fuses 11 fails unexpectedly, the other electronic fuses 11 can still maintain the power supply path of the power brick 12, providing component-level redundancy and greatly improving the fault tolerance of the single power brick 12 and the reliability of the entire power system.

[0043] According to the total power demand of the server, a corresponding combination design power board 1 can be selected. Specifically, different power supply bricks 12 can be selected according to the power consumption demand, and the power of the single power board 1 after combination can cover multiple different powers, which can support high power consumption demand and also ensure low power consumption configuration, and achieve design without waste.

[0044] It can be seen that in the embodiment, the total power demand of the server is dispersed by the parallel design of multiple power boards 1, so that the single board 54V bus current is reduced to the safe bearing range of the MOS tube, the impact risk is reduced, the electronic fuse 11 matches the single board power setting overcurrent protection threshold, and the short circuit protection response time is shortened; each board independently deploys the power supply brick 12 to realize 12V local conversion, the single board 12V current is reduced, combined with the power supply design of the output end of the multiple boards, the heat source is dispersed to eliminate heat accumulation and the through-flow capacity is doubled through the parallel path, and the circuit board heat dissipation and electrical design feasibility are improved. The technical problems of MOS tube overrun, overcurrent protection delay, and circuit board heat accumulation and through-flow difficulty caused by large current of 54V power supply in high-power servers are solved, and the technical effects of enhancing power supply reliability and optimizing energy efficiency are achieved.

[0045] On the basis of the above embodiment: in an example embodiment, the power supply brick 12 includes a voltage sampling pin, and the power supply circuit further includes a sampling point and a sampling resistor arranged on the power board 1, a first end of the sampling resistor is connected with the sampling point, and a second end of the sampling resistor is connected with the voltage sampling pin.

[0046] In the embodiment, one power board 1 is taken as an example for description, and other power boards 1 in the power supply circuit are the same. Each power supply brick 12 of the power board 1 is provided with a voltage sampling pin, and the power board 1 is further provided with a sampling point and a sampling resistor. The sampling point is usually located at a load point or a key power supply path, such as near a load point (Point of Load, POL) or the most critical / sensitive position on the output path of the power supply brick 12, so as to compensate the line voltage drop between the output end of the power supply brick 12 and the load.

[0047] With one power brick 12 as an example, other power bricks 12 on the power board 1 are the same. The first end of the sampling resistor is connected to the sampling point, and the second end of the sampling resistor is connected to the voltage sampling pin. The voltage at the sampling point is reduced to a reference voltage range acceptable by the error amplifier inside the power brick 12 through the sampling resistor. The power brick 12 reads the voltage at the sampling point after being reduced by the sampling resistor through the voltage sampling pin, compares it with the reference voltage Vref preset inside itself, and adjusts the output voltage at the second end according to the comparison result. If the sampling voltage is less than the reference voltage, the error amplifier output increases, driving the power stage to increase the duty cycle or on-time, increasing the output voltage of the power brick 12, and vice versa. The output voltage of the power brick 12 is thus maintained at the second voltage. By directly sampling the voltage at the key point and comparing it with the high-precision reference voltage Vref, the closed-loop feedback system can accurately stabilize the load point voltage at the set value. When the sampling point is set near the maximum load point, it can automatically compensate for the resistive voltage drop caused by the copper foil trace, connector, via, etc. between the output end of the power brick 12 and the load supply pin, ensuring that the actual voltage at the pin of the load can still be accurately maintained at the set value 12 when the load is running at full load, avoiding under-voltage and system instability or performance degradation caused by line voltage drop.

[0048] In an exemplary embodiment, the power supply circuit further comprises a first connector and a voltage regulating resistor provided on the power board 1. The first end of the voltage regulating resistor is connected to the second end of the sampling resistor, and the second end of the voltage regulating resistor is connected to the first connector. Any two power boards 1 are connected through the first connector.

[0049] In this embodiment, each power board 1 further comprises a first connector 13, and any two power boards 1 are connected through the first connector 13, as shown in Figure 6 The first connector 13 on the first power board 1 and the first connector 13 on the second power board 1 are connected through a cable, thereby realizing signal transmission between the boards.

[0050] In this embodiment, each power board 1 is also provided with a voltage regulating resistor, the first end of the voltage regulating resistor is connected with the second end of the sampling resistor and the voltage sampling pin on the power brick 12, for processing the local first voltage sampling signal to obtain a second voltage sampling signal, the second end of the voltage regulating resistor is connected with a special pin on the first connector 13, and the second voltage sampling signal is transmitted to the first connector 13 on other power boards 1 of the power supply circuit through the first connector 13 and the cable, when the first connectors 13 on all power boards 1 are interconnected through the cable, these pins form a single point in the electrical, which can be recorded as a shared voltage regulation bus, the voltage on the shared voltage regulation bus is the weighted average of the voltages generated by all parallel power boards 1 through their voltage regulating resistors, at this time, the voltage sampling pin of the power brick 12 will obtain the voltage on the shared voltage regulation bus to adjust its own output parameters.

[0051] Specifically, each power board 1 generates a local voltage feedback signal at the local sampling point through its sampling resistor , and each power board 1 injects (or draws out) a small current to the shared voltage regulation bus through its voltage regulating resistor . The voltage regulating resistors of all parallel boards work together to establish a stable voltage on the shared voltage regulation bus . , is the weighted average of all . The error amplifier of each power brick 12 no longer compares its local with Vref, but compares obtained from with its internal Vref, all power bricks 12 compare the same and Vref, and the error amplifier in each power brick 12 no longer responds to local fluctuations in voltage, but responds to the overall load state of the system, each power board 1 automatically adjusts the output current of each power board 1 until the of each power board 1 all tend to , so that each power board 1 maintains a consistent voltage at the local sampling point, reducing the risk of uneven current or single board overload.

[0052] Figure 7 In an exemplary embodiment, please refer toThe sampling points include a first sampling point and a second sampling point, and the sampling resistors include a first sampling resistor R1 and a second sampling resistor R2. The first sampling point is connected with the second end of the power supply brick 12 and the first end of the first sampling resistor R1 respectively. The second end of the first sampling resistor R1 is connected with the voltage sampling pin. The second sampling point is connected with the first end of the second sampling resistor R2 and the ground respectively. The second end of the second sampling resistor R2 is connected with the voltage sampling pin. The power supply circuit further includes a first connector 13, a first voltage regulating resistor R3 and a second voltage regulating resistor R4 arranged on the power supply board 1. The first end of the first voltage regulating resistor R3 is connected with the second end of the first sampling resistor R1. The second end of the first voltage regulating resistor R3 is connected with the first connector 13. The first end of the second voltage regulating resistor R4 is connected with the second end of the second sampling resistor R2. The second end of the second voltage regulating resistor R4 is connected with the first connector 13. Any two power supply boards 1 are connected through the first connector 13.

[0053] The embodiment is combined with Figure 7 for illustration, Figure 7 The design of any two connecting boards in the power supply circuit is shown in the figure. The voltage sampling problem between different power supply bricks 12 is solved by Figure 7The first power panel 1 in the first power panel 1 is taken as an example for illustration, 12-1 is the second voltage output by the first power brick 12 in the first power panel, 12-2 is the second voltage output by the second power brick 12 in the first power panel, node 12-3 is the 12V voltage of the first sampling point near the 12V output connector on the first power panel 1, the first sampling resistor R1 on the first power panel 1 connects the 12V voltage of 12-3, the second sampling resistor R2 on the first power panel 1 connects the GND near the 12V voltage of 12-3, 111 is the local voltage feedback signal sampled through the first sampling resistor R1, 112 is the local ground voltage sampling signal sampled through the second sampling resistor R2, the power brick 12 can adjust the voltage based on the sampling back 111 and 112. The first voltage regulating resistor R3 and the second voltage regulating resistor R4 isolate 111 and 112 respectively, 113 is the 12V signal isolated through the first voltage regulating resistor R3, connected to the first dedicated pin of the first connector 13, 114 is the GND signal isolated through the second voltage regulating resistor R4, connected to the second dedicated pin of the first connector 13. The second power panel 1 is designed the same way, the first connector 13 of the two power panels 1 is connected by a shielded cable to share the voltage sampling signals between the two power panels 1. Signals 111 and 112 need to be shielded from interference and should be wired as differential signals on the power panel 1. If there are multiple power panels 1, then shielded wires are needed to connect all the first connectors 13 of the multiple power panels 1 together, when the first dedicated pins of the first connectors 13 of all the power panels 1 are interconnected by cables, these pins form a single point in terms of electricity, which can be referred to as a shared voltage regulation bus, when the second dedicated pins of the first connectors 13 of all the power panels 1 are interconnected by cables, these pins form a single point in terms of electricity, which can be referred to as a shared ground regulation bus, the voltage sampling pins of each power brick 12 adjust their own output parameters according to the shared voltage signal on the shared voltage regulation bus and the shared ground voltage signal on the shared ground regulation bus, the adjustment process is referred to the previous embodiment, which will not be repeated here.

[0054] In an example embodiment, as shown in Figure 8 The power brick 12 includes an enable pin, the electronic fuse 11 includes a power good pin, and the power supply circuit further includes a pull-up power access end, a resistor module and a plurality of diodes provided on the power panel 1, the cathodes of the plurality of diodes are connected one by one with the power good pins of the plurality of electronic fuses 11, the common end of the anodes of the plurality of diodes after being connected with each other is connected with the first end of the resistor module and each enable pin, and the second end of the resistor module is connected with the pull-up power access end.

[0055] In the embodiment, the power supply board 1 is taken as an example for illustration, and the other power supply boards 1 in the power supply circuit are the same. Each power supply brick 12 on the power supply board 1 includes an enable pin EN, and the electronic fuse 11 includes a power good pin PG. It can be understood that when the output voltage of the power supply is normal, the power good pin PG of the electronic fuse 11 outputs a high-level signal, and when the output voltage of the power supply is abnormal, the power good pin PG of the electronic fuse 11 outputs a low-level signal. When the enable pin EN of the power supply brick 12 receives a high-level signal, the power supply brick 12 starts to work, and when the enable pin EN of the power supply brick 12 receives a low-level signal, the power supply brick 12 does not start.

[0056] Specifically, the power supply board 1 is further provided with a monitoring component. When the power good pins PG of all the electronic fuses 11 on the power supply board 1 output high-level signals, the monitoring component outputs a high-level signal to the enable pin EN of the power supply brick 12. When the power good pin PG of any electronic fuse 11 on the power supply board 1 outputs a low-level signal, the monitoring component outputs a low-level signal to the enable pin EN of the power supply brick 12. In the embodiment, the monitoring component is built by at least a pull-up power supply access end, a resistance module, and a plurality of diodes. The cathodes of the plurality of diodes are connected to the power good pins PG of the plurality of electronic fuses 11 one by one, the anodes of the plurality of diodes are connected to each other and then connected to the first end of the resistance module and the enable pin EN of each power supply brick 12, and the second end of the resistance module is connected to the pull-up power supply access end. It can be understood that when the power good pins PG of all the electronic fuses 11 output high-level signals, the diodes connected thereto are reverse-biased and cut off, the enable pin EN of the power supply brick 12 is pulled high by the resistance module and the pull-up power supply access end, that is, the enable pin EN of the power supply brick 12 receives a high-level signal, and each power supply brick 12 on the power supply board 1 starts to work. When the power good pin PG of at least one electronic fuse 11 outputs a low-level signal, the diode connected thereto is forward-biased and conducts, and the enable pin EN of the power supply brick 12 is pulled low, that is, the enable pin of the power supply brick 12 receives a low-level signal, and each power supply brick 12 on the power supply board 1 does not start to work.

[0057] When any electronic fuse 11 is abnormal (such as overcurrent / short circuit) and its PG is low, all the power supply bricks 12 of the power supply board 1 are immediately turned off to avoid the fault spreading to the server motherboard. Moreover, the PG signals of the multi-D electronic fuses 11 are synchronized with the logic to ensure that all the input power supplies are stable before allowing the power supply bricks 12 to start to work, thereby preventing the surge current impact.

[0058] In an exemplary embodiment, the resistance module includes a first resistor, and the power supply circuit further includes a voltage reduction module. The first end of the voltage reduction module is connected to the physical access end of the voltage bus on the power supply board 1, the second end of the voltage reduction module is connected to the first end of the first resistor, and the second end of the first resistor serves as the first end of the resistance module.

[0059] In this embodiment, the resistance module can also be built by only one resistor, at this time, a voltage reduction module (such as LDO or DC-DC converter) is needed to reduce the 54V voltage to the target voltage, and then drive the enable pin EN of the power supply brick 12 through the first resistor current limiting, it can be understood that the voltage reduction module has an overcurrent protection function, which automatically cuts off the current path when abnormally conducting, thereby improving the safety of power supply.

[0060] In an exemplary embodiment, in combination with Figure 9 , Figure 9 Only the power supply board 1 built by two power supply bricks 12 and two electronic fuses 11 is shown, and other combination forms are the same, the resistance module includes a first resistor Ra and a second resistor Rb, the first end of the first resistor Ra is connected with the pull-up power access end VCC, the common end of the second end of the first resistor Ra and the first end of the second resistor Rb is the first end of the resistance module, and the second end of the second resistor Rb is grounded. The pull-up power access end VCC is the physical access end of the voltage bus on the power supply board 1.

[0061] Considering that the power supply board 1 only includes a 54V power supply, therefore, in this embodiment, the physical access end of the voltage bus on the power supply board 1 is directly used as the pull-up power access end VCC, and correspondingly, the resistance module of this embodiment includes a first resistor Ra and a second resistor Rb, which reduces the 54V voltage to a logic level (such as 3.3V) and then drives the enable pin EN of the power supply brick 12, so as to ensure that the voltage of the EN pin is always within a safe range. Specifically, refer to Figure 9 Two electronic fuses 11 of a single power supply board 1 support two power supply bricks 12 one by one, in order to avoid problems such as time difference in power-on of the electronic fuses 11 or power-on failure of one of the electronic fuses 11, a monitoring component as shown in Figure 9 is added, wherein the 101 signal is the Power good signal (i.e. power good signal) of the first electronic fuse 11, PG is the power good pin of the electronic fuse, the 101 signal is connected to the negative electrode of the first diode D1, the 102 signal is the Power good signal (i.e. power good signal) of the second electronic fuse 11, and the 102 signal is connected to the negative electrode of the second diode D2. The positive electrodes of the first diode D1 and the second diode D2 are connected to the same node, the 103 signal is pulled up to the VCC power (i.e. pull-up power) through the first resistor Ra and the second resistor Rb, the VCC power can be selected from the 54V power on the power supply board 1, such as 54-1 power or 54-2 power, and the 103 signal is the power-on Enable signal (i.e. enable signal) of the first power supply brick 12 and the second power supply brick 12. After the Power good signals of the two electronic fuses 11 are both high, the two power supply bricks 12 of the next stage are enabled and started.

[0062] Further, the first resistor Ra and the second resistor Rb in the embodiment can be adjustable resistors. By adjusting the ratio of the first resistor Ra and the second resistor Rb, the logic level of different power bricks 12 can be supported.

[0063] In an example embodiment, the power board 1 includes m electronic fuses 11, the power bricks 12 include enable pins, the electronic fuses 11 include power good pins, and the power supply circuit further includes m-1 AND gates, each of which includes two input terminals and one output terminal, m input terminals of the m-1 AND gates are connected to the power good pins of the m electronic fuses 11 one by one, the output terminal of a target AND gate in the m-1 AND gates is connected to each enable pin, and the output terminals of m-2 AND gates other than the target AND gate in the m-1 AND gates are connected to the input terminals of other AND gates, where m is an integer greater than or equal to 2.

[0064] In the embodiment, the monitoring assembly can also be built through the m-1 AND gates, and the m-1 AND gates have at least two building methods as follows. One is a chain structure: the two input terminals of a first AND gate are connected to the power good pins of a first electronic fuse 11 and a second electronic fuse 11, respectively, the first input terminal of a j-th AND gate (j=2 to m-1) is connected to the power good pin of a (j+1)-th electronic fuse 11, the second input terminal of the j-th AND gate is connected to the output terminal of a (j-1)-th AND gate, the output terminal of an (m-1)-th AND gate outputs an enable signal Sen, and the (m-1)-th AND gate is a target AND gate. Taking four electronic fuses 11 as an example, the structure of the monitoring assembly is shown in FIG. 2. Figure 10 The other is a tree structure: the m power good pins are divided into (m-1) groups, each group generates an intermediate signal through an AND gate, the intermediate signals are divided into groups again, each group generates a next-level intermediate signal through an AND gate, and the output terminal of a last-level AND gate outputs the enable signal Sen. The last-level AND gate is a target AND gate. Still taking four electronic fuses 11 as an example, the structure of the monitoring assembly is shown in FIG. 3. Figure 11 In an example embodiment, on the basis of

[0065] Figure 7 , reference is made to Figure 12 , Figure 12 ​​Any two power panels 1 in the power supply circuit are shown, the power brick 12 includes a current sharing pin, the current sharing pins of the power bricks 12 arranged on the same power panel 1 are connected to each other, the power supply circuit further includes a first isolation resistor R5, a second isolation resistor R6, a capacitor C1 and a first connector 13 arranged on the power panel 1, the first end of the first isolation resistor R5 is connected with the current sharing pin of each power brick 12 on the power panel 1 and the first end of the capacitor C1 respectively, the second end of the first isolation resistor R5 is connected with the first connector 13, the second end of the capacitor C1 is connected with the first end of the second isolation resistor R6 and the ground respectively, the second end of the second isolation resistor R6 is connected with the first connector 13, and any two power panels 1 are connected through the first connector 13.

[0066] In the embodiment, 121 of the first power panel 1 is the current sharing signal of the first power brick 12, and the two power bricks 12 on the first power panel 1 only need to be directly connected through 121 to realize the output real-time current sharing between the first power brick 12 and the second power brick 12. In order to realize the current sharing of the power bricks 12 between different power panels 1, the embodiment increases the capacitor C1 for filtering the noise signal on 121, and increases the first isolation resistor R5 and the second isolation resistor R6 for isolation, 122 is the signal after the isolation of the current sharing signal 121, 122 is connected to the specified pin of the first connector 13, 123 is the signal after the isolation of the GND signal through the second isolation resistor R6, 123 is connected to the specified pin of the first connector 13, the design of the second power panel 1 is completely the same as that of the first power panel 1, the current sharing signal of the second power panel 1 is connected to the first connector 13 on the second power panel 1, and the first connector 13 on the first power panel 1 and the first connector 13 on the second power panel 1 are connected by a cable, so as to realize the current sharing effect of the four power bricks 12 between the first power panel 1 and the second power panel 1. It can be understood that if there are n power panels 1, the first connectors 13 of the n power panels 1 need to be connected together by a shielded cable to realize the active current sharing effect of the power bricks 12 of multiple power panels 1, and avoid the power failure problem caused by uneven current sharing.

[0067] In an example embodiment, the server motherboard includes a power supply side, the first end of the power supply side is provided with at least one power supply connector, and the second end of the power supply side is provided with at least one power supply connector.

[0068] In this embodiment, the server single node power is large, and needs to be powered by 2 or more power panels 1. In this embodiment, the server mainboard adopts two-sided PSU (Power Supply Unit, power supply unit) layout, and at least 1-2 CRPS (Common Redundant Power Supply, common redundant power supply system) power connectors on one side, and at least 2-4 CRPS power connectors on the other side. The power connectors are distributed on the two edges of the same side of the server mainboard, so that the mainboard power is taken from the power panels 1 on both sides at the same time.

[0069] Referring to Figure 13 , Figure 13 The connection between the power panel 1 and the server mainboard is described by taking four power panels 1 as an example. Figure 13 The upper side of the power supply side of the server mainboard has two CRPS power connectors PJ10 and PJ11, and the lower side has two CRPS power connectors PJ12 and PJ13. When four power panels 1 are in place, among the two power panels 1 on the upper side, the first power panel 1 is inserted into the PJ11 connector, and the third power panel 1 is inserted into the PJ10 connector; among the two power panels 1 on the lower side, the second power panel 1 is inserted into the PJ12 connector, and the fourth power panel 1 is inserted into the PJ13 connector. If the whole machine configuration is adjusted, only two power panels 1 are inserted, and from the power layout, the first power panel 1 and the second power panel 1 are preferentially inserted. This design is compatible with standard 12V CRPS power, and when the server is directly powered by 12V CRPS power, the CRPS power can be directly connected to the four connectors of the mainboard. The power connector multiplexing can save costs and save wiring space on the mainboard.

[0070] In an exemplary embodiment, the power supply circuit further comprises at least one second connector provided on the power panel 1, the first end of the second connector being connected to the second end of the power brick 12 on the power panel 1, and the second end of the second connector being connected to the target power device on the server mainboard; wherein the target power device is a power device on the server mainboard with a power consumption greater than a preset power consumption.

[0071] In this embodiment, in order to avoid the power on the server mainboard from being too concentrated, the power of the GPU (Graphics Processing Unit, graphics processor), fan plate or hard disk back plate and other power devices or board cards with relatively large power consumption can be disassembled to the power panel 1. The power supply path from the power panel 1->mainboard->device is shortened to the power panel 1 directly to the device, thereby shortening the transmission path of the power supply and reducing the power on the server mainboard. Referring to Figure 14Take the power board 1 as an example, the 12V output of the power brick 12 is output to the power connectors PJ1, PJ2 and PJ3, wherein, PJ1 is a power connector for supplying power to the server mainboard, that is, the output end of the power board 1 in the embodiment, and PJ2 and PJ3 are the second connectors in the embodiment, which are used for supplying power to the power-consuming devices or boards with relatively large power consumption such as GPU, fan board or hard disk backboard, and the number of the second connectors can be increased or decreased according to actual use.

[0072] In the embodiment, PJ1 can adopt a standard golden finger connector of CRPS power supply, so that the power board 1 can be directly plugged into the CRPS power connector of the server mainboard.

[0073] The application considers that the current of a single 54V Efuse is too large to find a suitable power element, and the new design divides the 54V Efuse with large input current into multiple Efuses with small current, and according to the number of the next power brick 12, the 54V Efuse is divided into an equal number of 54V Efuse, and each Efuse supplies power to a power brick 12. In this way, the current of a single Efuse will be greatly reduced, which is conducive to finding a suitable Efuse solution, reducing the cost of the Efuse, and effectively reducing the OCP protection current value of the Efuse. When a short circuit occurs on the board, the protection can be triggered more timely and quickly, avoiding the expansion of the damage caused by the short circuit.

[0074] To solve the problem of too large power and too high power density of a single power board 1, the power of a single power board 1 can be reduced by disassembling into different power boards 1. For example, a combination of two Efuses and two power bricks 12 is designed as a power board 1, the power consumption of a single board is greatly reduced, and the gathering of elements with large heat dissipation such as power bricks 12 is avoided, and heat dissipation is difficult. The current of a single board is also greatly reduced, and the PCB current is easier to pass, reducing heat. At the same time, the PSU connection of the mainboard is split into two sides for power supply, avoiding the problem of too concentrated power supply. After the power supply layout of the two sides of the mainboard, the single-point power input of the mainboard is avoided, and the devices on the mainboard can take power from the nearest power supply interface, reducing the power supply path length to the power-consuming device and reducing the current density on the power transmission path, avoiding the emergence of a large heat dissipation power plane. Second, the PSUs on the two sides of the mainboard are powered by power boards 1, for example, there are 4 power boards 1, and each side has 2 power boards 1 for power supply; after two-side power supply, the power supply of a single power board 1 on one side bears half of the original current, and the heat dissipation power is reduced to 1 / 4 of the original, and the total heat dissipation power is also half of the original; a single power board 1 can be connected by a cable with small current, and it is easier to find a mature and low-cost solution, and the connection scheme can share the power connector of the CRPS PSU, and a single power board 1 can be directly plugged into the connector of the PSU, which can realize complete reuse of the mainboard in 54V power supply scheme and standard 12V PSU power supply scheme, and increase the universality of materials. In order to further reduce the loss of the path, the power supply of some devices with large current can be directly taken from the power board 1, such as the power supply of GPU, fan, hard disk backplane and other devices, which can be reduced from the original power board 1->mainboard->device power supply path to power board 1->device, reducing the loss of the path.

[0075] In summary, the present application can solve many problems of a 54V input high-power server: the difficulty of selecting large power and large current elements and the high cost, the difficulty of current path layout caused by too concentrated power supply layout, the difficulty of heat dissipation caused by local heat aggregation, and the problem of not being able to share the CRPS power supply layout and needing two sets of power supply connectors and connection cables.

[0076] The embodiment of the present application also provides a server comprising a server mainboard and a power supply circuit as any one of the above.

[0077] The embodiment of the present application also provides a power supply method applied to the power supply circuit as described in any one of the above embodiments, and the power supply method is described with reference to Figure 15The power supply method comprises: S101, when the input ends of a plurality of mutually connected power panels in a power supply circuit are connected to a first voltage, transmitting the first voltage to the first ends of at least one power brick on the power panels through a plurality of electronic fuses on the power panels; S102, converting the first voltage connected to the first ends into a second voltage by the power bricks, and outputting the second voltage from the second ends; and S103, supplying power to a server mainboard through the second voltage output from the output ends of the power panels.

[0078] In an example embodiment, the power supply method further comprises: for each power panel, monitoring power good signals of the electronic fuses on the power panel, and allowing each power brick on the power panel to start when all the power good signals are valid.

[0079] In an example embodiment, the power supply method further comprises: on each power panel, obtaining a first voltage sampling signal representing a local output voltage and a first ground sampling signal representing a local reference ground voltage, isolating the first voltage sampling signal and the first ground sampling signal to generate an isolated second voltage sampling signal and an isolated second ground sampling signal, connecting the second voltage sampling signals of the at least two power panels to each other to form a shared voltage sampling signal, and connecting the second ground sampling signals of the at least two power panels to each other to form a shared ground sampling signal, and on each power panel, adjusting the output voltage of the power bricks on the power panel according to a voltage difference between the shared voltage sampling signal and the shared ground sampling signal, so that the voltage difference is equal to a preset reference voltage.

[0080] In an example embodiment, the power supply method further comprises: on each power panel, monitoring a current value flowing through the electronic fuses, and when the current value exceeds a preset overcurrent protection threshold, cutting off the first voltage output by the electronic fuses and invalidating a power good signal output by the electronic fuses.

[0081] From the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software and a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation.

[0082] The embodiments of the present application also provide a power supply system applied to the power supply circuit as described in any one of the above embodiments, and the power supply system comprises: a first transmission module configured to transmit the first voltage to the first ends of at least one power brick on the power panels through a plurality of electronic fuses on the power panels when the input ends of a plurality of mutually connected power panels in a power supply circuit are connected to a first voltage; a conversion module configured to convert the first voltage connected to the first ends into a second voltage by the power bricks, and output the second voltage from the second ends; and a second transmission module configured to supply power to a server mainboard through the second voltage output from the output ends of the power panels.

[0083] In an example embodiment, the power supply system further comprises a monitoring module configured to monitor, for each power board, power good signals of the electronic fuses on the power board, and allow the power bricks on the power board to start up when all the power good signals are valid.

[0084] In an example embodiment, the power supply system further comprises a voltage regulating module configured to obtain, on each power board, a first voltage sampling signal representing a local output voltage and a first ground sampling signal representing a local reference ground voltage, isolate the first voltage sampling signal and the first ground sampling signal to generate an isolated second voltage sampling signal and an isolated second ground sampling signal, generate a shared voltage sampling signal according to the second voltage sampling signals of the at least two power boards, and generate a shared ground sampling signal according to the second ground sampling signals of the at least two power boards, and adjust, on each power board, the output voltage of the power bricks on the power board according to a voltage difference between the shared voltage sampling signal and the shared ground sampling signal, so that the voltage difference is equal to a preset reference voltage.

[0085] In an example embodiment, the power supply system further comprises a protection module configured to monitor, on each power board, a current value flowing through itself by the electronic fuse, and cut off a first voltage output by the electronic fuse and disable a power good signal output by the electronic fuse when the current value exceeds a preset overcurrent protection threshold.

[0086] Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be realized by means of software and the necessary general hardware platform, of course, it can also be realized by hardware, but in many cases, the former is a better embodiment.

[0087] Embodiments of the present application also provide an electronic device comprising a memory and a processor, the memory storing a computer program, and the processor being configured to run the computer program to perform the steps in any of the above power supply method embodiments.

[0088] Embodiments of the present application also provide a computer readable storage medium storing a computer program, wherein the computer program is configured to perform the steps in any of the above power supply method embodiments when running.

[0089] In an example embodiment, the above computer readable storage medium can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store computer programs.

[0090] The embodiment of the present application further provides a computer program product, which comprises a computer program, and the computer program realizes the steps in any of the power supply method embodiments when executed by a processor.

[0091] The embodiment of the present application further provides another computer program product, which comprises a nonvolatile computer readable storage medium, and the nonvolatile computer readable storage medium stores a computer program, and the computer program realizes the steps in any of the power supply method embodiments when executed by a processor.

[0092] Those skilled in the art can further understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware, computer software or combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description in general terms. Whether the functions are realized in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0093] The above provides a power supply circuit, a power supply method, a server, a product and a medium. The principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method and its core idea. It should be pointed out that for those skilled in the art, without departing from the principles of the present application, some improvements and modifications can be made to the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A power supply circuit, characterized by comprising: The power supply board comprises a plurality of parallel power supply boards, each of which comprises an input end, an output end, a plurality of electronic fuses and a plurality of power supply bricks, wherein: the input end of the power supply board is connected to a first voltage, a first end of the electronic fuse is connected to the input end of the power supply board, a second end of the electronic fuse is connected to a first end of at least one of the power supply bricks, the output end of the power supply board is connected to a power supply connector of a server mainboard and a second end of the power supply brick, respectively, the second end of the power supply brick outputs a second voltage, and the second voltage is less than the first voltage; the power supply brick comprises a voltage sampling pin, the power supply circuit further comprises a sampling point and a sampling resistor arranged on the power supply board, a first end of the sampling resistor is connected to the sampling point, and a second end of the sampling resistor is connected to the voltage sampling pin, and the sampling point is a sampling point close to a load point; the sampling point comprises a first sampling point and a second sampling point, the sampling resistor comprises a first sampling resistor and a second sampling resistor, the first sampling point is connected to the second end of the power supply brick and a first end of the first sampling resistor, respectively, a second end of the first sampling resistor is connected to the voltage sampling pin, the second sampling point is connected to a first end of the second sampling resistor and the ground, respectively, and a second end of the second sampling resistor is connected to the voltage sampling pin; the power supply circuit further comprises a first connector, a first voltage regulating resistor and a second voltage regulating resistor arranged on the power supply board, a first end of the first voltage regulating resistor is connected to a second end of the first sampling resistor, a second end of the first voltage regulating resistor is connected to a first special pin of the first connector, a first end of the second voltage regulating resistor is connected to a second end of the second sampling resistor, and a second end of the second voltage regulating resistor is connected to a second special pin of the first connector, any two of the power supply boards are connected through the first connector, when the first connectors of all the power supply boards are connected to each other through a cable to form a shared voltage regulating bus, and the second special pins of all the power supply boards are connected to each other through a cable to form a shared ground regulating bus, the power supply brick is configured to adjust its output voltage by collecting a voltage difference between a shared voltage signal on the shared voltage regulating bus and a shared ground signal on the shared ground regulating bus through the voltage sampling pin.

2. The power supply circuit according to claim 1, characterized in that, the power supply brick comprises an enable pin, the electronic fuse comprises a power good pin, the power supply circuit further comprises a pull-up power input end, a resistance module and a plurality of diodes arranged on the power supply board, a cathode of each of the plurality of diodes is connected to a power good pin of each of the plurality of electronic fuses, a common end of anodes of the plurality of diodes after being connected to each other is connected to a first end of the resistance module and each of the enable pins, and a second end of the resistance module is connected to the pull-up power input end.

3. The power supply circuit of claim 2, wherein, The resistance module comprises a first resistor and a second resistor, a first end of the first resistor is connected with the pull-up power access end, a common end after a second end of the first resistor and a first end of the second resistor are connected serves as a first end of the resistance module, a second end of the second resistor is grounded, and the pull-up power access end is a physical access end of a voltage bus on the power board.

4. The power supply circuit of claim 2, wherein, The resistance module comprises a first resistor, and the power supply circuit further comprises a voltage reduction module, a first end of the voltage reduction module is connected with the physical access end of the voltage bus on the power board, and a second end of the voltage reduction module is connected with a first end of the first resistor, and a second end of the first resistor serves as a first end of the resistance module.

5. The power supply circuit of claim 1, wherein, The power board comprises m electronic fuses, the power brick comprises an enable pin, the electronic fuse comprises a power good pin, the power supply circuit further comprises m-1 AND gates, each of the AND gates comprises two input ends and one output end, m input ends of the m-1 AND gates are connected with the power good pins of the m electronic fuses one by one, the output end of a target AND gate in the m-1 AND gates is connected with each of the enable pins, the output ends of m-2 AND gates other than the target AND gate in the m-1 AND gates are connected with the input ends of other AND gates, and m is an integer greater than or equal to 2.

6. The power supply circuit of claim 1, wherein, The power brick comprises a current sharing pin, and the current sharing pins of the power bricks arranged on the same power board are connected with each other.

7. The power supply circuit of claim 6, wherein, The power supply circuit further comprises a first isolation resistor, a second isolation resistor, a capacitor and a first connector arranged on the power board, a first end of the first isolation resistor is connected with the current sharing pins of the power bricks on the power board and a first end of the capacitor respectively, a second end of the first isolation resistor is connected with the first connector, a second end of the capacitor is connected with a first end of the second isolation resistor and the ground respectively, a second end of the second isolation resistor is connected with the first connector, and any two power boards are connected through the first connector.

8. The power supply circuit of claim 1, wherein, The server mainboard comprises a power supply side, at least one power supply connector is arranged at a first end of the power supply side, and at least one power supply connector is arranged at a second end of the power supply side.

9. The power supply circuit according to any one of claims 1 to 7, characterized by The power supply circuit further comprises at least one second connector arranged on the power board, a first end of the second connector is connected with the second end of the power brick on the power board, and a second end of the second connector is connected with a target electrical equipment on the server mainboard; wherein the target electrical equipment is an electrical equipment with power consumption greater than a preset power consumption on the server mainboard.

10. A server, characterized by The power supply circuit comprises a server mainboard and the power supply circuit according to any one of claims 1-9.

11. A power supply method characterized by, The power supply method is applied to the power supply circuit according to any one of claims 1-9, and the power supply method comprises: When the input ends of a plurality of power boards connected with each other in the power supply circuit are connected with a first voltage, the first voltage is transmitted to the first end of at least one power brick on the power board through a plurality of electronic fuses on the power board. The first voltage inputted into the first end of each power brick is converted into a second voltage by the power brick, and the second voltage is outputted from the second end of the power brick; The second voltage outputted from the output end of each power board is used to supply power to a server mainboard.

12. The power supply method according to claim 11, wherein The power supply method further comprises: For each power board, the power good signals of each electronic fuse on the power board are monitored, and when all the power good signals are valid, each power brick on the power board is allowed to start.

13. The power supply method according to claim 11, wherein The power supply method further comprises: On each power board, a first voltage sampling signal representing a local output voltage and a first ground sampling signal representing a local reference ground voltage are obtained, and the first voltage sampling signal and the first ground sampling signal are isolated to generate an isolated second voltage sampling signal and an isolated second ground sampling signal; A shared voltage sampling signal is generated according to the second voltage sampling signals of at least two power boards, and a shared ground sampling signal is generated according to the second ground sampling signals of at least two power boards; On each power board, the output voltage of the power brick on the power board is adjusted according to the voltage difference between the shared voltage sampling signal and the shared ground sampling signal, so that the voltage difference is equal to a preset reference voltage.

14. The power supply method according to any one of claims 11 to 13, characterized by, The power supply method further comprises: On each power board, the current flowing through the electronic fuse is monitored, and when the current value exceeds a preset overcurrent protection threshold, the electronic fuse cuts off the first voltage outputted by itself and makes the power good signal outputted by itself invalid.

15. A computer program product comprising computer programs / instructions, characterized in that, The computer program / instructions are executed by the processor to implement the steps of the power supply method according to any one of claims 11 to 14.

16. A computer-readable storage medium, characterized in that, The computer program / instructions are executed by the processor to implement the steps of the power supply method according to any one of claims 11 to 14. The computer program / instructions are executed by the processor to implement the steps of the power supply method according to any one of claims 11 to 14.

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