Power supply circuit, power supply method, server, product and medium

Abstract

The invention discloses a power supply circuit, a power supply method, a server, a product and a medium, and relates to the technical field of server power supply, the total power demand of the server is dispersed through the parallel design of multiple power panels, the bus current of a single board connected to a first voltage is reduced to the safe bearing range of an MOS tube, the impact risk is reduced, and the service life of the server is prolonged. The electronic fuse is matched with the single-board power to set an overcurrent protection threshold value, and the short-circuit protection response time is shortened; each board is independently provided with a power supply brick to realize second voltage localization conversion and single board output current reduction, a multi-board output end combined power supply design is combined, a heat source is dispersed to eliminate heat accumulation, the through-current capability is multiplied through a parallel path, and the heat dissipation and electrical design feasibility of the circuit board is improved. The technical problems of MOS tube over-limit, overcurrent protection delay, circuit board heat accumulation and difficult through-flow caused by large current brought by 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] This 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 Art

[0002] As the performance of servers improves, the overall power of the machine increases sharply. The loss of the traditional 12V power supply architecture in the power transmission path shows an exponential growth. Therefore, a 54V (in the range of 48V - 60V) power supply is introduced to reduce the transmission loss. After the 54V voltage passes through the electronic fuse on the power supply board, it is stepped down to 12V by the parallel power bricks to supply power to the server motherboard and its internal devices.

[0003] Since the single-node power of current AI (Artificial Intelligence) servers has climbed to the kilowatt level, this power supply architecture faces the following bottlenecks: First, the 54V bus needs to carry a current of about several hundred amperes under high-power loads. Key components in existing electronic fuses (such as MOS (Metal-Oxide-Semiconductor) transistors) are difficult to withstand this large current, and their overcurrent protection thresholds must be set significantly higher than the working current value, resulting in a protection delay when an output short circuit occurs, posing a safety risk; Second, when the high-power output is reached, the 12V bus current is as high as several hundred amperes. The concentrated layout of multiple power bricks not only causes local heat accumulation, but also challenges the heat dissipation design and large-current conduction capacity of the PCB (Printed Circuit Board), restricting the reliability and energy efficiency improvement of high-power servers.

[0004] Therefore, how to provide a solution to the above technical problems is an issue that those skilled in the art need to solve currently. Summary of the Invention

[0005] This 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 transistor overlimit, overcurrent protection delay, circuit board heat accumulation, and current conduction difficulty caused by the large current brought by the 54V power supply in high-power servers in related technologies.

[0006] This application provides a power supply circuit, including a plurality of interconnected power supply boards. Each power supply board includes an input end, an output end, a plurality of electronic fuses, and a plurality of power bricks, wherein:

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

[0008] The present application also provides a power supply circuit and a server, including a server motherboard and the power supply circuit described in any one of the above.

[0009] The present application also provides a power supply method applied to the power supply circuit described in any one of the above. The power supply method includes:

[0010] When the input ends of multiple interconnected power supply boards in the power supply circuit are connected to a first voltage, the first voltage is transmitted to the first end of at least one power brick on the power supply board through multiple electronic fuses on each power supply board;

[0011] After converting the first voltage connected to the first end by each power brick into a second voltage, it is output from the second end;

[0012] The second voltage output from the output end of each power supply board powers the server motherboard.

[0013] The present application also provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, the steps of the power supply method described above are implemented.

[0014] The present application also provides a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, the steps of the power supply method described above are implemented.

[0015] Through the present application, the total power requirement of the server is dispersed through a multi-power supply board parallel design, reducing the 54V bus current per board to the safe carrying range of the MOS tube, reducing the impact risk. The electronic fuse matches the overcurrent protection threshold set for the power of each board, shortening the short-circuit protection response time; each board independently deploys a power brick to achieve 12V local conversion, reducing the 12V current per board. Combined with the multi-board output end combined power supply design, the heat source is dispersed to eliminate heat accumulation and the current-carrying capacity is multiplied through parallel paths, improving the heat dissipation and electrical design feasibility of the circuit board. It solves the technical problems of MOS tube overlimit, overcurrent protection delay, and circuit board heat accumulation and current-carrying difficulty caused by the large current brought by the 54V power supply in high-power servers, achieving the technical effects of enhancing power supply reliability and optimizing energy efficiency. Description of the Drawings

[0016] To more clearly illustrate the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0017] Figure 1 Schematic diagram of the structure of the first power supply circuit provided by the embodiments of the present application.

[0018] Figure 2 Schematic diagram of the structure of a centralized power supply circuit provided by the related art.

[0019] Figure 3 Schematic diagram of the structure of the second power supply circuit provided by the embodiments of the present application.

[0020] Figure 4 Schematic diagram of the structure of the first power supply board provided by the embodiments of the present application.

[0021] Figure 5 Schematic diagram of the structure of the second power supply board provided by the embodiments of the present application.

[0022] Figure 6 Schematic diagram of the structure of the third power supply circuit provided by the embodiments of the present application.

[0023] Figure 7 Schematic diagram of the structure of the fourth power supply circuit provided by the embodiments of the present application.

[0024] Figure 8 Schematic diagram of the structure of the third power supply board provided by the embodiments of the present application.

[0025] Figure 9 Schematic diagram of the structure of the fourth power supply board provided by the embodiments of the present application.

[0026] Figure 10 Schematic diagram of the structure of the first monitoring component built with AND gates provided by the embodiments of the present application.

[0027] Figure 11 Schematic diagram of the structure of the second monitoring component built with AND gates provided by the embodiments of the present application.

[0028] Figure 12 Schematic diagram of the structure of the fifth power supply circuit provided by the embodiments of the present application.

[0029] Figure 13 Schematic diagram of the structure of the sixth power supply circuit provided by the embodiments of the present application.

[0030] Figure 14 Schematic diagram of the structure of the fifth power supply board provided by the embodiments of the present application.

[0031] Figure 15 It is a step flow chart of a power supply method provided by an embodiment of the present application. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application.

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

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

[0035] Please refer to Figure 1 , an embodiment of the present application provides a power supply circuit, including a plurality of interconnected power supply boards 1. Each power supply board 1 includes an input terminal, an output terminal, a plurality of electronic fuses 11 and a plurality of power bricks 12, wherein: the input terminal of the power supply board 1 is connected to a first voltage, the first end of the electronic fuse 11 is connected to the input terminal of the power supply board 1, the second end of the electronic fuse 11 is connected to the first end of at least one power brick 12, the output terminal of the power supply board 1 is respectively connected to the power supply connector of the server motherboard and the second end of the power brick 12, and the second end of the power brick 12 outputs a second voltage, and the second voltage is less than the first voltage.

[0036] In this embodiment, after the input terminals of each power supply board 1 are interconnected and connected to the first voltage, wherein the first voltage can be a voltage value between 48V and 60V, specifically it can be 54V. Since the power supply of the server is provided in parallel by a plurality of power supply boards 1, the total power requirement of the server is split into multiple independent sub-units for processing. Assuming the total power requirement of the server , the power supply circuit of the server includes 4 power supply boards 1 working in parallel, then each power supply board 1 bears the power , avoiding the risk of single-point overload. Since the power of a single power supply board 1 is reduced, the 54V bus current of a single power supply board 1 , such as Figure 2 As shown, in the centralized power supply solution in the related art, a 54V electronic fuse and multiple 54V to 12V power bricks are provided on a single power supply board, and the 54V bus current of the single board In the solution of this embodiment, compared with the centralized power supply solution, the 54V bus current of the single board is reduced from 111A to 27.8A, which can be lower than the safety threshold of the mainstream MOS transistor, thereby reducing the risk of the MOS transistor being broken down and increasing the selection flexibility of the electronic fuse 11 (Efuse). Further, since the 54V bus current of the single board is reduced to 27.8A, the overcurrent protection threshold of the electronic fuse 11 on the power supply board 1 is set at (i.e., the working current of the single board, that is, the 54V bus current of the single board). Then, adopting the solution of this embodiment, the overcurrent protection threshold , still compared with the centralized power supply solution in the related art, the overcurrent protection threshold is reduced from 133A ( ) to 33.4A, the fault energy during short circuit is reduced, and the short circuit protection response time is shortened.

[0037] In this embodiment, a plurality of power bricks 12 are further provided on each power supply board 1. The power bricks 12 can be built by DC-DC (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 after converting the first voltage into a second voltage (such as 12V), it is output. Considering that the 12V output power of the single power supply board 1 is 1500W, the 12V current output by combining a plurality of power bricks 12 on the single power supply board 1 is , still compared with the centralized power supply solution in the related art, the 12V current output by combining a plurality of power bricks 12 on the single power supply board 1 is reduced from 500A ( ) to 125A, and there is no need to select connectors and cables with higher current-carrying capacity between the power supply board 1 and the server main board, reducing the material cost.

[0038] In this embodiment, the power bricks 12 are dispersedly designed on a plurality of power supply boards 1 to avoid the aggregation of heat-generating components such as the power bricks 12, disperse the heat source to solve the problem of local heat accumulation, improve the current-carrying capacity through the parallel paths of each power supply board 1, enhance the feasibility of PCB thermal design and electrical design, and finally enhance the power supply reliability and energy efficiency optimization of high-power servers.

[0039] As an alternative embodiment, the number of power bricks 12 and electronic fuses 11 provided on each power supply board 1 can be the same or different, such as Figure 3As shown, two power bricks 12 and two electronic fuses 11 are provided on the first power board 1, and three power bricks 12 and three electronic fuses 11 are provided on the second power board 1. In this embodiment, a single power board 1 is allowed to flexibly configure the number of internal power bricks 12 according to the target power demand. Servers with lower power demands can use a power board 1 configured with fewer power bricks 12 (such as 2), while servers with higher power demands can use a power board 1 configured with more power bricks 12 (such as 3 or more). This avoids waste caused by configuring a power board 1 with excessive redundancy or capacity for low-power servers. In addition, the server system can select a combination composed of power boards 1 with different specifications (number of bricks) according to its actual power budget and redundancy requirements (such as N, N+1, 2N) to more precisely match the requirements and reduce the unused power capacity.

[0040] As another alternative embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can be one-to-one, such as Figure 3 As shown, each power brick 12 has an independent protection channel (electronic fuse 11). When a power brick 12 fails (such as a short circuit), its corresponding electronic fuse 11 will accurately blow, isolating the faulty brick without affecting the other power bricks 12 on the same board or the output of the entire power board 1, maximizing the continuous power supply capacity of the power board 1 and system availability. The blown electronic fuse 11 directly points to the faulty power brick 12, facilitating quick positioning and repair.

[0041] As another alternative embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can also be one-to-many, that is, the second end of one electronic fuse 11 is connected to the first ends of multiple power bricks 12, such as Figure 4 As shown, for application scenarios with relatively low 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 drive / monitoring circuits, and lowering the material cost and design complexity of the power board 1.

[0042] As another alternative embodiment, the correspondence between the power bricks 12 and the electronic fuses 11 on each power board 1 can also be many-to-one, that is, the second ends of multiple electronic fuses 11 are all connected to the first end of the same power brick 12, such as Figure 5 As shown, a path of multiple parallel electronic fuses 11 is configured for a single (high-power) power brick 12. Even if one of the electronic fuses 11 fails accidentally, the other electronic fuses 11 can still maintain the power supply path of this power brick 12, providing component-level redundancy and greatly improving the fault tolerance of a single power brick 12 and the reliability of the entire power system.

[0043] Just select the corresponding combined designed power supply board 1 according to the total power demand of the server. Specifically, different power bricks 12 with different powers can be selected according to the power consumption demand. After combination, the power of a single power supply board 1 can cover multiple different powers, which can not only support high-power consumption requirements but also ensure low-power configurations, achieving no waste in design.

[0044] It can be seen that in this embodiment, the total power demand of the server is dispersed through the parallel design of multiple power supply boards 1, reducing the 54V bus current of a single board to the safe carrying range of the MOS transistor, reducing the impact risk. The electronic fuse 11 matches the overcurrent protection threshold set for the power of a single board, shortening the short-circuit protection response time. Each board independently deploys the power brick 12 to achieve 12V local conversion, reducing the 12V current of a single board. Combined with the combined power supply design at the output ends of multiple boards, the heat source is dispersed to eliminate accumulated heat and the current-carrying capacity is doubled through parallel paths, improving the heat dissipation and electrical design feasibility of the circuit board. This solves the technical problems of MOS transistor overlimit, overcurrent protection delay, circuit board heat accumulation, and current-carrying difficulty caused by the large current brought by the 54V power supply in high-power servers, achieving the technical effect of enhancing power supply reliability and optimizing energy efficiency.

[0045] Based on the above embodiment: In an exemplary embodiment, the power brick 12 includes a voltage sampling pin, and the power supply circuit further includes a sampling point and a sampling resistor provided on the power supply board 1. 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.

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

[0047] Taking a power brick 12 as an example for illustration, the same applies to other power bricks 12 on the power board 1. 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 through the sampling resistor to a reference voltage range acceptable to the error amplifier inside the power brick 12. The power brick 12 reads the voltage at the sampling point after being stepped down by the sampling resistor through the voltage sampling pin, compares it with the preset reference voltage Vref inside itself, and adjusts the output voltage of its second end according to the comparison result. For example, if the sampled voltage is less than the reference voltage, the output of the error amplifier increases, driving the power stage to increase the duty cycle or conduction time to boost the output voltage of the power brick 12. Conversely, the duty cycle or conduction time is decreased to lower the output voltage of the power brick 12, so that the output voltage of the power brick 12 is 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 drops generated by copper foil traces, connectors, vias, etc. between the output terminal of the power brick 12 and the load power supply pin, ensuring that when the load is operating at full load, the actual voltage at its pin can still be accurately maintained at the set value 12, avoiding under-voltage and system instability or performance degradation caused by line voltage drops.

[0048] In an exemplary embodiment, the power supply circuit further includes 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 includes a first connector 13. Any two power boards 1 are connected through the first connector 13. As Figure 6 shown, the first connector 13 on the first power board 1 and the first connector 13 on the second power board 1 are connected by a cable, thereby realizing signal transmission between the boards.

[0050] In this embodiment, a voltage regulating resistor is further provided on each power supply board 1. The first end of the voltage regulating resistor is connected to the second end of the sampling resistor and the voltage sampling pin on the power brick 12, and is used to process the local first voltage sampling signal to obtain a second voltage sampling signal. The second end of the voltage regulating resistor is connected to a dedicated pin on the first connector 13, and the second voltage sampling signal is transmitted to the first connector 13 on other power supply boards 1 of the power supply circuit through the first connector 13 and the cable. When the first connectors 13 on all the power supply boards 1 are interconnected through the cable by their respective dedicated pins, these pins form an electrical single point, which can be denoted as the shared voltage regulation bus. The voltage on the shared voltage regulation bus is the weighted average of the voltages generated by all the parallel power supply boards 1 through their respective 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 supply board 1 generates a local voltage feedback signal at the local sampling point through its sampling resistor. , each power supply board 1 injects (or pulls out) a small current into (or from) the shared voltage regulation bus through its voltage regulating resistor . The voltage regulating resistors of all the parallel boards act together to establish a stable voltage on the shared voltage regulation bus , which is the weighted average of all . The error amplifier of each power brick 12 no longer compares its local and Vref, but compares the obtained from with its internal Vref. All the power bricks 12 compare the same and Vref. The error amplifiers in each power brick 12 no longer respond to the local fluctuations of the local voltage, but respond to the overall load state of the system. Each power supply board 1 automatically adjusts the output current of each power supply board 1 until the of each power supply board 1 all infinitely approaches , so as to maintain a consistent voltage at the local sampling point of each power supply board 1 and reduce the risk of uneven current sharing or single-board overload. all infinitely approaches ,

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

[0053] This embodiment will be described in conjunction with Figure 7 for illustration. Figure 7 shows the design of any two connection boards in the power supply circuit. Regarding the sampling problem of the voltage between different power bricks 12, taking Figure 7Taking the first power supply board 1 as an example for illustration, 12-1 is the second voltage output by the first power brick 12 in the first power supply board, 12-2 is the second voltage output by the second power brick 12 in the first power supply board, node 12-3 is the 12V voltage of the first sampling point near the 12V output connector on the first power supply board 1. The first sampling resistor R1 on the first power supply board 1 is connected to the 12V voltage of 12-3, and the second sampling resistor R2 on the first power supply board 1 is connected to GND near the 12V voltage of 12-3. 111 is the local voltage feedback signal sampled by the first sampling resistor R1, 112 is the local ground voltage sampling signal sampled by the second sampling resistor R2. The power brick 12 can adjust the voltage based on the sampled 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 by the first voltage regulating resistor R3 and is connected to the first dedicated pin of the first connector 13. 114 is the GND signal isolated by the second voltage regulating resistor R4 and is connected to the second dedicated pin of the first connector 13. The design of the second power supply board 1 is the same. A cable with a shielding layer is used to connect the first connectors 13 of the two power supply boards 1 to achieve the sharing of voltage sampling signals between the two power supply boards 1. The signals 111 and 112 need to be shielded from interference and should be routed as differential signals on the power supply board 1. If there are multiple power supply boards 1, then shielded wires are needed to connect all the first connectors 13 of the multiple power supply boards 1 together. When the first dedicated pins of all the first connectors 13 on all the power supply boards 1 are interconnected by cables, these pins form an electrical single point, which can be denoted as the shared voltage regulation bus. When the second dedicated pins of all the first connectors 13 on all the power supply boards 1 are interconnected by cables, these pins form an electrical single point, which can be denoted as the 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 refers to the previous embodiment and will not be elaborated here.

[0054] In an exemplary embodiment, as Figure 8 shown, 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 terminal, a resistor module, and a plurality of diodes provided on the power supply board 1. The cathodes of the plurality of diodes are respectively connected to the power good pins of the plurality of electronic fuses 11, and the common terminal after the anodes of the plurality of diodes are connected to each other is connected to the first end of the resistor module and each enable pin. The second end of the resistor module is connected to the pull-up power access terminal.

[0055] In this embodiment, taking a power supply board 1 as an example for illustration, the same applies to other power supply boards 1 in the power supply circuit. Each power 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 power output voltage is normal, the power good pin PG of the electronic fuse 11 outputs a high-level signal, and when the power output voltage 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 brick 12 receives a high-level signal, the power brick 12 starts to work, and when the enable pin EN of the power brick 12 receives a low-level signal, the power brick 12 does not start.

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

[0057] When any one of the electronic fuses 11 is abnormal (such as overcurrent / short circuit) resulting in its PG being at a low level, all the power bricks 12 of this power supply board 1 are immediately turned off to prevent the failure from spreading to the server motherboard. Moreover, the PG signals of multiple D electronic fuses 11 are synchronized through AND logic to ensure that all input power supplies are stable before allowing the power brick 12 to start, preventing inrush current impact.

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

[0059] In this embodiment, the resistor module can also be built with only one resistor. In this case, a buck module (such as an LDO or a DC-DC converter) needs to be configured to reduce the 54V voltage to the target voltage, and then drive the enable pin EN of the power brick 12 after current limiting through the first resistor. It can be understood that the buck module has an overcurrent protection function and automatically cuts off the current path during abnormal conduction, improving the power supply safety.

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

[0061] Considering that only a 54V power supply is included on the power supply board 1, therefore, in this embodiment, the physical access terminal of the voltage bus on the power supply board 1 is directly used as the pull-up power supply access terminal VCC. Correspondingly, the resistor module of this embodiment includes a first resistor Ra and a second resistor Rb. The 54V voltage is reduced to a logic level (such as 3.3V) through the first resistor Ra and the second resistor Rb, and then the enable pin EN of the power brick 12 is driven to ensure that the voltage of the EN pin is always within a safe range. Specifically, referring to Figure 9 , two electronic fuses 11 of a single power supply board 1 support 2 power bricks 12 one by one. In order to avoid problems such as a time difference in the power-on sequence of the electronic fuses 11 or a power-on failure of one of the electronic fuses 11, a monitoring component as shown in Figure 9 is added. Among them, the 101 signal is the Power good signal (i.e., the 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 Powergood signal (i.e., the 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 supply (i.e., the pull-up power supply) through voltage division by the first resistor Ra and the second resistor Rb. The VCC power supply can select the 54V power supply on the power supply board 1, such as the 54-1 power supply or the 54-2 power supply. The 103 signal is the power-on Enable signal (i.e., the enable signal) of the first power brick 12 and the second power brick 12. After the Power good signals of the two electronic fuses 11 are both at a high level, the two power bricks 12 at the subsequent stage are enabled to start.

[0062] Further, the first resistor Ra and the second resistor Rb in this embodiment can be selected as adjustable resistors. By adjusting the ratio of the first resistor Ra to the second resistor Rb, different logic levels of the power brick 12 can be supported.

[0063] In an exemplary embodiment, the power supply board 1 includes m electronic fuses 11, the power brick 12 includes an enable pin, the electronic fuse 11 includes a power good pin, the power supply circuit further includes m - 1 AND gates, each AND gate includes two input terminals and one output terminal, the m input terminals of the m - 1 AND gates are respectively and correspondingly connected to the power good pins of the m electronic fuses 11, the output terminal of the target AND gate among the m - 1 AND gates is connected to each enable pin, the output terminals of the m - 2 AND gates except the target AND gate among the m - 1 AND gates are connected to the input terminals of other AND gates, and m is an integer greater than or equal to 2.

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

[0065] In an exemplary embodiment, on the basis of Figure 7 , referring to Figure 12 , Figure 12It shows any two power supply boards 1 in a power supply circuit. The power bricks 12 include current sharing pins, and the current sharing pins of the power bricks 12 provided on the same power supply board 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 provided on the power supply board 1. The first end of the first isolation resistor R5 is connected to the current sharing pins of each power brick 12 on its own power supply board 1 and the first end of the capacitor C1. The second end of the first isolation resistor R5 is connected to the first connector 13. The second end of the capacitor C1 is connected to the first end of the second isolation resistor R6 and the ground respectively. The second end of the second isolation resistor R6 is connected to the first connector 13. Any two power supply boards 1 are connected through the first connector 13.

[0066] In this embodiment, 121 on the first power supply board 1 is the current sharing signal of the first power brick 12. The two power bricks 12 on the first power supply board Ⅰ only need to be directly connected through 121 to achieve real-time current sharing of the outputs between the first power brick 12 and the second power brick 12. To achieve current sharing of the power bricks 12 between different power supply boards 1, a capacitor C1 is added in this embodiment to filter the Noise signal on 121, and a first isolation resistor R5 and a second isolation resistor R6 are added for isolation. 122 is the signal after the current sharing signal 121 is isolated, and 122 is connected to the designated pin of the first connector 13. 123 is the signal after the GND signal is isolated by the second isolation resistor R6, and 123 is connected to the designated pin of the first connector 13. The design of the second power supply board 1 is exactly the same as that of the first power supply board 1. The current sharing signal of the second power supply board 1 is connected to the first connector 13 on the second power supply board 1. A cable is used to connect the first connector 13 on the first power supply board 1 and the first connector 13 on the second power supply board 1, so as to achieve the current sharing effect of the 4 power bricks 12 between the first power supply board 1 and the second power supply board 1. It can be understood that if there are n power supply boards 1, then the first connectors 13 of these n power supply boards 1 need to be all connected together through shielded cables to achieve the active current sharing effect of the power bricks 12 of multiple power supply boards 1 and avoid the power-off problem caused by uneven current sharing.

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

[0068] In this embodiment, since the power of a single node of the server is relatively large, 2 or more power supply boards 1 are required for power supply. After the server motherboard adopts a layout of two-sided PSUs (Power Supply Units) in this embodiment, there is at least 1-2 CRPS (Common Redundant Power Supply) power connectors on one side, and at least 2-4 CRPS power connectors on both sides. The power connectors are distributed on two edges on the same side of the server motherboard, so that the motherboard power takes power from the power supply boards 1 on both sides simultaneously.

[0069] Refer to Figure 13 , Figure 13 Take 4 power supply boards 1 as an example to illustrate the connection between the power supply board 1 and the server motherboard. Figure 13 There are two CRPS power connectors, PJ10 and PJ11, on the upper side of the power supply side of the server motherboard in [reference], and two CRPS power connectors, PJ12 and PJ13, on the lower side. When 4 power supply boards 1 are in place, among the two power supply boards 1 on the upper side, the first power supply board 1 is inserted into the PJ11 connector, and the third power supply board 1 is inserted into the PJ10 connector; among the two power supply boards 1 on the lower side, the second power supply board 1 is inserted into the PJ12 connector, and the fourth power supply board 1 is inserted into the PJ13 connector. If the overall machine configuration is adjusted and only 2 power supply boards 1 are inserted, from the power supply layout perspective, the first power supply board 1 and the second power supply board 1 are preferentially inserted. This design is compatible with the standard 12V CRPS power supply. When the server directly uses the 12V CRPS power supply for power supply, then the CRPS power supply can be directly connected to the 4 connectors on the motherboard. The reuse of power connectors can save costs and more save the wiring space on the motherboard.

[0070] In an exemplary embodiment, the power supply circuit further includes at least one second connector provided on the power supply board 1. The first end of the second connector is connected to the second end of the power brick 12 on the power supply board 1 where it is located, and the second end of the second connector is connected to the target electrical device on the server motherboard; wherein, the target electrical device is an electrical device on the server motherboard with a power consumption greater than the preset power consumption.

[0071] In this embodiment, in order to avoid over-concentration of power on the server motherboard, the power of power-consuming electrical devices or boards such as GPUs (Graphics Processing Units), fan boards, or hard disk backplanes can be disassembled to the power supply board 1, reducing the power supply path from the power supply board 1 -> motherboard -> device to directly from the power supply board 1 to the device, thereby shortening the power transmission path and reducing the power on the server motherboard. Refer to Figure 14, taking a power supply board 1 as an example for illustration, the 12V output by the power brick 12 is output to power connectors PJ1, PJ2, and PJ3. Among them, PJ1 is the power connector for supplying power to the server motherboard, that is, the output end of the power supply board 1 in this embodiment. PJ2 and PJ3 are the second connectors in this embodiment, used to supply power to power-consuming devices or boards with relatively high power consumption such as GPUs, fan boards, or hard disk backplanes. The number of second connectors can be increased or decreased according to actual use.

[0072] In this embodiment, PJ1 can adopt the standard gold finger connector of the CRPS power supply, so that the power supply board 1 can be directly inserted into the CRPS power connector of the server motherboard.

[0073] This application considers that the current of a single 54V Efuse is too large, making it difficult to have a suitable power component. The new design disassembles the 54V Efuse with a large input current into multiple Efuses with small currents. According to the number of the next-level power bricks 12, it is disassembled into the same number of 54V Efuses, and each Efuse independently supplies power to a power brick 12. In this way, the current of a single Efuse will drop a lot, which is not only beneficial to finding a suitable Efuse solution and reducing the cost of the Efuse, but also can effectively reduce 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 to avoid the expansion of the short-circuit damage.

[0074] For the problem that the power of a single power supply board 1 is too large and the power density is too high, the power of a single power supply board 1 can be reduced by disassembling it into different power supply boards 1. For example, the combination of two Efuses and two power bricks 12 is designed as a single power supply board 1, and the power consumption of a single board will be greatly reduced, avoiding the aggregation of components with large heat generation such as power bricks 12, which is difficult for heat dissipation. The current of a single board also drops significantly, making it easier for the PCB to conduct current and reducing heat generation. At the same time, the PSU connection of the main board is disassembled into two-side power supply to avoid the problem of over-concentrated power supply. After the power supply layout on both sides of the main board, the single-point power supply input of the main board is avoided, and the devices powered on the main board can draw power from the nearest power supply interface, reducing the length of the power supply path from the power supply to the powered device, reducing the current density on the power transmission path, and avoiding the power plane with large heat generation. Second, the PSUs on both sides of the main board are respectively powered by the power supply board 1. For example, if there are 4 power supply boards 1, then there are 2 power supply boards 1 on each side for power supply; after the two-side power supply, the power supply of a single-side power supply board 1 bears half of the original current, and the heat generation power consumption is reduced to 1 / 4 of the original, and the total heat generation power consumption is also half of the original; for the power supply of a single power supply board 1, a connection method with a small current can be selected, which is easier to find a mature and low-cost solution, and the connection scheme can be shared with the power supply connector of the CRPS PSU. A single power supply board 1 can be directly inserted into the connector of the PSU, and the main board of the 54V power supply scheme and the standard 12V PSU power supply scheme can be fully reused, increasing the universality of the materials. To further reduce the loss of the path, the power supply of some devices with large current can be directly taken from the power supply board 1. For example, the power supply of devices such as GPUs, fans, and hard disk backplanes can be reduced from the original power supply path of power supply board 1 -> main board -> device to power supply board 1 -> device, reducing the loss of the path.

[0075] In summary, this application can solve multiple problems of high-power servers with 54V input: the problem of difficult component selection and high cost for high-power and high-current components, the problem of difficult current path layout caused by over-concentrated power supply layout, the problem of difficult heat dissipation due to local heat aggregation, and the problem of requiring two sets of power supply connectors and connection cables because it cannot share the power supply layout with the CRPS power supply.

[0076] The embodiment of this application also provides a server, including a server main board and a power supply circuit as described in any one of the above.

[0077] The embodiment of this application also provides a power supply method, which is applied to the power supply circuit described in any one of the above embodiments, referring to Figure 15, the power supply method includes: S101: When the input ends of multiple interconnected power supply boards in the power supply circuit are connected to a first voltage, the first voltage is transmitted to the first ends of at least one power brick on the power supply board through multiple electronic fuses on each power supply board; S102: After converting the first voltage connected to the first end into a second voltage by each power brick, the second voltage is output from the second end; S103: The second voltage output from the output ends of each power supply board powers the server motherboard.

[0078] In an exemplary embodiment, the power supply method further includes: for each power supply board, monitoring the power good signals of the respective electronic fuses on the power supply board, and when all the power good signals are valid, allowing the respective power bricks on the power supply board to start.

[0079] In an exemplary embodiment, the power supply method further includes: on each power supply board, obtaining a first voltage sampling signal representing the local output voltage and a first ground sampling signal representing the local reference ground voltage, performing isolation processing on 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 respective second voltage sampling signals of at least two power supply boards to form a shared voltage sampling signal, and connecting the respective second ground sampling signals of at least two power supply boards to form a shared ground sampling signal; on each power supply board, adjusting the output voltage of the power brick on the power supply board 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.

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

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

[0082] The embodiment of the present application also provides a power supply system, which is applied to the power supply circuit described in any one of the above embodiments. The power supply system includes: a first transmission module, configured to when the input ends of multiple interconnected power supply boards in the power supply circuit are connected to a first voltage, transmit the first voltage to the first ends of at least one power brick on the power supply board through multiple electronic fuses on each power supply board; a conversion module, configured to convert the first voltage connected to the first end into a second voltage by each power brick and then output the second voltage from the second end; a second transmission module, configured to power the server motherboard with the second voltage output from the output ends of each power supply board.

[0083] In an exemplary embodiment, the power supply system further includes: a monitoring module configured to monitor the power good signals of each electronic fuse on a power supply board for each power supply board, and when all the power good signals are valid, allow each power brick on the power supply board to start.

[0084] In an exemplary embodiment, the power supply system further includes: a voltage regulating module configured to, on each power supply board, obtain a first voltage sampling signal representing the local output voltage and a first ground sampling signal representing the local reference ground voltage, perform isolation processing on 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 at least two power supply boards respectively, and generate a shared ground sampling signal according to the second ground sampling signals of at least two power supply boards respectively; on each power supply board, adjust the output voltage of the power brick on the power supply board 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.

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

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

[0087] An embodiment of the present application further provides an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above power supply method embodiments.

[0088] An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program is configured to execute the steps in any one of the above power supply method embodiments when running.

[0089] In an exemplary embodiment, the above computer-readable storage medium may include, but is not limited to: a USB flash drive, a read-only memory (ROM for short), a random access memory (RAM for short), a mobile hard disk, a magnetic disk, or an optical disc, and other various media that can store a computer program.

[0090] Embodiments of the present application also provide a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the steps in any of the above-mentioned power supply method embodiments are implemented.

[0091] Embodiments of the present application also provide another computer program product, including a non-volatile computer-readable storage medium. The non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in any of the above-mentioned power supply method embodiments are implemented.

[0092] Those skilled in the art can further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Skilled professionals can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0093] The above has introduced in detail a power supply circuit, a power supply method, a server, a product, and a medium provided by the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present application, several 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 in that, It includes a plurality of interconnected power supply boards, and each of the power supply boards includes an input terminal, an output terminal, a plurality of electronic fuses, and a plurality of power bricks, where: The input terminal of the power supply board is connected to a first voltage. The first end of the electronic fuse is connected to the input terminal of the power supply board, the second end of the electronic fuse is connected to the first end of at least one of the power bricks, the output terminal of the power supply board is respectively connected to the power supply connector of the server motherboard and the second end of the power brick, and the second end of the power brick outputs a second voltage, and the second voltage is less than the first voltage.

2. The power supply circuit according to claim 1, wherein The power brick includes a voltage sampling pin, and the power supply circuit further includes a sampling point and a sampling resistor provided on the power supply board. 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.

3. The power supply circuit according to claim 2, wherein The power supply circuit further includes a first connector and a voltage regulating resistor provided on the power supply board. The first end of the voltage regulating resistor is connected to the second end of the sampling resistor, the second end of the voltage regulating resistor is connected to the first connector, and any two of the power supply boards are connected through the first connector.

4. The power supply circuit according to claim 2, wherein The sampling point includes a first sampling point and a second sampling point, the sampling resistor includes a first sampling resistor and a second sampling resistor. The first sampling point is respectively connected to the second end of the power brick and the first end of the first sampling resistor, the second end of the first sampling resistor is connected to the voltage sampling pin, the second sampling point is respectively connected to the first end of the second sampling resistor and the ground, and the second end of the second sampling resistor is connected to the voltage sampling pin.

5. The power supply circuit according to claim 4, characterized in that, The power supply circuit further includes a first connector, a first voltage regulating resistor, and a second voltage regulating resistor provided on the power supply board. The first end of the first voltage regulating resistor is connected to the second end of the first sampling resistor, the second end of the first voltage regulating resistor is connected to the first connector, the first end of the second voltage regulating resistor is connected to the second end of the second sampling resistor, the second end of the second voltage regulating resistor is connected to the first connector, and any two of the power supply boards are connected through the first connector.

6. The power supply circuit according to claim 1, wherein, The power brick includes an enable pin, the electronic fuse includes a power good pin, and the power supply circuit further includes a pull-up power access terminal, a resistor module, and a plurality of diodes provided on the power supply board. The cathodes of the plurality of diodes are respectively connected to the power good pins of the plurality of electronic fuses, the common end after the anodes of the plurality of diodes are connected to each other is connected to the first end of the resistor module and each of the enable pins, and the second end of the resistor module is connected to the pull-up power access terminal.

7. The power supply circuit according to claim 6, characterized in that, The resistor module includes a first resistor and a second resistor. The first end of the first resistor is connected to the pull-up power access terminal, the common end after the second end of the first resistor and the first end of the second resistor are connected is used as the first end of the resistor module, the second end of the second resistor is grounded, and the pull-up power access terminal is the physical access terminal of the voltage bus on the power supply board.

8. The power supply circuit according to claim 6, wherein The resistor module includes a first resistor. The power supply circuit further includes a buck module. The first end of the buck module is connected to the physical access end of the voltage bus on the power supply board. The second end of the buck module is connected to the first end of the first resistor. The second end of the first resistor serves as the first end of the resistor module.

9. The power supply circuit according to claim 1, characterized in that The power supply board includes m of the electronic fuses. The power brick includes an enable pin. The electronic fuse includes a power good pin. The power supply circuit further includes m - 1 AND gates. Each AND gate includes two input terminals and one output terminal. The m input terminals of the m - 1 AND gates are respectively connected to the power good pins of the m electronic fuses in a one-to-one correspondence. The output terminal of the target AND gate among the m - 1 AND gates is connected to each of the enable pins. The output terminals of the m - 2 AND gates other than the target AND gate among the m - 1 AND gates are connected to the input terminals of other AND gates. m is an integer greater than or equal to 2.

10. The power supply circuit according to claim 1, characterized in that, The power brick includes a current sharing pin. The current sharing pins of the power bricks provided on the same power supply board are connected to each other.

11. The power supply circuit according to claim 10, wherein, The power supply circuit further includes a first isolation resistor, a second isolation resistor, a capacitor, and a first connector provided on the power supply board. The first end of the first isolation resistor is respectively connected to the current sharing pins of each of the power bricks on its own power supply board and the first end of the capacitor. The second end of the first isolation resistor is connected to the first connector. The second end of the capacitor is respectively connected to the first end of the second isolation resistor and the ground. The second end of the second isolation resistor is connected to the first connector. Any two power supply boards are connected through the first connector.

12. The power supply circuit according to claim 1, wherein, The server motherboard includes a power supply side. At least one power supply connector is provided at the first end of the power supply side. At least one power supply connector is provided at the second end of the power supply side.

13. The power supply circuit according to any one of claims 1-12, characterized in that, The power supply circuit further includes at least one second connector provided on the power supply board. The first end of the second connector is connected to the second end of the power brick on its own power supply board. The second end of the second connector is connected to the target electrical device on the server motherboard. Wherein, the target electrical device is an electrical device on the server motherboard with a power consumption greater than a preset power consumption.

14. A server, characterized in that, It includes a server motherboard and the power supply circuit according to any one of claims 1 - 13.

15. A power supply method, characterized in that, Applied to the power supply circuit according to any one of claims 1 - 13, the power supply method includes: When the input ends of multiple interconnected power supply boards in the power supply circuit are connected to a first voltage, the first voltage is transmitted to the first end of at least one power brick on the power supply board through multiple electronic fuses on each power supply board. After converting the first voltage connected to the first end by each power brick into a second voltage, the second voltage is output from the second end. The second voltage output from the output ends of each power supply board powers the server motherboard.

16. The power supply method according to claim 15, characterized in that, The power supply method further includes: For each power supply board, monitoring the power good signals of each of the electronic fuses on the power supply board. When all the power good signals are valid, allowing each of the power bricks on the power supply board to start.

17. The power supply method according to claim 15, characterized in that, The power supply method further includes: On each of the power supply boards, obtaining a first voltage sampling signal representing the local output voltage and a first ground sampling signal representing the local reference ground voltage, performing isolation processing on 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; Generating a shared voltage sampling signal according to the second voltage sampling signals of at least two of the power supply boards respectively, and generating a shared ground sampling signal according to the second ground sampling signals of at least two of the power supply boards respectively; On each of the power supply boards, adjusting the output voltage of the power brick on the power supply board 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.

18. The power supply method according to any one of claims 15-17, characterized in that The power supply method further includes: On each of the power supply boards, monitoring the current value flowing through itself through the electronic fuse, and when the current value exceeds a preset overcurrent protection threshold, cutting off the first voltage output by itself through the electronic fuse and invalidating the power good signal output by itself.

19. A computer program product, comprising computer programs / instructions, characterized in that, When the computer program / instructions are executed by a processor, the steps of the power supply method according to any one of claims 15 to 18 are implemented.

20. A computer-readable storage medium, characterized in that, A computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the power supply method according to any one of claims 15 to 18 are implemented.

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