Power supply system of server, control method of power supply system and server

Abstract

The invention discloses a power supply system of a server, a control method of the power supply system and the server, and relates to the technical field of servers, and the method comprises the steps that a detection control unit is integrated in a power converter, and the detection control unit collects current data of the output end of the power converter and amplifies the current data; whether the output end of the power converter is short-circuited or not is judged according to the amplified current data, so that weak abnormal current signals at the early stage of short circuit are easier to capture, the amplified current data can reach an overcurrent protection point more quickly, and the power converter is turned off before the actual short-circuit current at the output end of the power converter reaches a higher value. Instantaneous current generated by the input end of the power converter is reduced, the risk of triggering power failure of the preceding-stage first electronic fuse is reduced, the technical problem that normal operation of other functions of the server can be affected when the output end of the power brick is short-circuited is solved, and the technical effect that other functions of the server can normally operate when the output end of the power brick is short-circuited is achieved.

Description

Technical Field

[0001] This application relates to the technical field of servers, and particularly to a power supply system of a server, a control method of the power supply system, and a server. Background Art

[0002] The power supply bus voltage of an Artificial Intelligence (AI) server system generally uses high-voltage direct current, and then converts the high-voltage direct current into low-voltage direct current for power supply through a power brick. As the power consumption of the power-consuming components increases, the power specification of the power brick gradually increases, and its Over Current Protection (OCP) point becomes higher and higher, and the over-current protection performance at the output end of the power brick will become weaker.

[0003] When a short circuit occurs at the output end of the power brick, it will cause a large instantaneous current to be generated at the input end of the power brick, posing a risk of triggering the power-off of the front-stage Electronic Fuse (EFUSE), which affects the normal operation of other functions of the server. Summary of the Invention

[0004] This application provides a power supply system of a server, a control method of the power supply system, and a server, so as to at least solve the problem in the related art that the normal operation of other functions of the server will be affected when a short circuit occurs at the output end of the power brick.

[0005] This application provides a power supply system of a server, including:

[0006] A first power conversion module, including a first electronic fuse and a power converter. The input end of the first electronic fuse is used to receive power input, the input end of the power converter is connected to the output end of the first electronic fuse, and the output end of the power converter is used to connect to the power-consuming components of the server;

[0007] A detection and control unit is integrated in the power converter. The detection and control unit is used to collect and amplify the current data at the output end of the power converter, and based on the amplified processing result, judge the short-circuit state at the output end of the power converter. When it is determined that the output end of the power converter is in the short-circuit state, control the power converter to turn off.

[0008] This application also provides a control method for a power supply system of a server, including:

[0009] Collect and amplify the current data at the output end of the power converter;

[0010] Based on the amplified processing result, judge the short-circuit state at the output end of the power converter;

[0011] When it is determined that the output terminal of the power converter is in the short - circuit state, control the power converter to turn off.

[0012] This application also provides a server, including:

[0013] An electrical component;

[0014] The power supply system of the server as described above, where the output terminal of the power converter in the first power conversion module of the power supply system is connected to the electrical component.

[0015] This application also provides an electronic device, including: a memory for storing a computer program; a processor for implementing the steps of the control method of the power supply system of any one of the above - mentioned servers when executing the computer program.

[0016] This application also provides a computer - readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps of the control method of the power supply system of any one of the above - mentioned servers are implemented.

[0017] This application also provides a computer program product, including a computer program. When the computer program is executed by a processor, the steps of the control method of the power supply system of any one of the above - mentioned servers are implemented.

[0018] Through this application, a detection and control unit is integrated in the power converter. The detection and control unit collects the current data at the output terminal of the power converter, amplifies the current data, and determines whether a short - circuit occurs at the output terminal of the power converter according to the amplified current data, making it easier to capture the weak abnormal current signal in the initial stage of the short - circuit. The amplified current data can reach the over - current protection point faster, turn off the power converter before the actual short - circuit current at the output terminal of the power converter reaches a relatively high value, reduce the instantaneous current generated at the input terminal of the power converter, and reduce the risk of triggering the power - off of the front - stage first electronic fuse. Therefore, the technical problem that the normal operation of other functions of the server will be affected when the output terminal of the power brick is short - circuited can be solved, and the technical effect that other functions of the server can operate normally when the output terminal of the power brick is short - circuited can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 One of the structural schematic diagrams of the power supply system of a server provided by an embodiment of the present application;

[0021] Figure 2 One of the schematic structural diagrams of the detection and control unit provided by the embodiments of the present application;

[0022] Figure 3 The second of the schematic structural diagrams of a power supply system of a server provided by the embodiments of the present application;

[0023] Figure 4 The schematic diagram of the power supply path provided by the embodiments of the present application;

[0024] Figure 5 The second of the schematic structural diagrams of the detection and control unit provided by the embodiments of the present application;

[0025] Figure 6 The schematic diagram of detecting current data provided by the embodiments of the present application;

[0026] Figure 7 The schematic structural diagram of the power supply system of the server in the related art;

[0027] Figure 8 The schematic diagram of the currents at both ends corresponding to the short circuit at the output end of the power brick in the related art;

[0028] Figure 9 The schematic diagram of the currents at both ends corresponding to the short circuit at the output end of the power brick provided by the embodiments of the present application;

[0029] Figure 10 The schematic flow diagram of the control method of the power supply system of the server provided by the embodiments of the present application;

[0030] Figure 11 The schematic structural diagram of the server provided by the embodiments of the present application.

[0031] Reference numerals:

[0032] Power supply system 100, first electronic fuse 110, power converter 120, detection and control unit 121,

[0033] Current acquisition sub-unit 121a, detection and processing sub-unit 121b, control sub-unit 121c,

[0034] Third electronic fuse 130, power supply unit 140, power distribution board 150,

[0035] Second electronic fuse 160, electrical component 200, graphics processor 210, network card 220,

[0036] Switch integrated circuit 230, hard disk backup 240, fan 250, system board 300,

[0037] System fan board 400, second resistor 511, second capacitor 512, current amplifier 521,

[0038] first resistor 522, first capacitor 523, voltage comparator 524, DC / DC converter 540,

[0039] server 1100. Detailed implementation

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to 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.

[0041] It should be noted that in the description of the present application, the terms "include", "comprise" or any other variant thereof are intended to cover a 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 further 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.

[0042] 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 with reference to the accompanying drawings and specific implementation manners.

[0043] An embodiment of the present application provides a power supply system 100 for a server 1100.

[0044] As Figure 1 shown, the power supply system 100 of the server 1100 includes a first power conversion module.

[0045] The first power conversion module includes a first electronic fuse 110 and a power converter 120. The input end of the first electronic fuse 110 is used to receive power input. The input end of the power converter 120 is connected to the output end of the first electronic fuse 110. The output end of the power converter 120 is used to connect to the electrical components 200 of the server 1100.

[0046] The first electronic fuse 110 and the power converter 120 in the first power conversion module can be arranged on the system board 300 (BASE BOARD). Among them, the first electronic fuse 110 (Electronic Fuse, EFUSE) is a protection device that uses electronic components to simulate the function of a traditional fuse. It can automatically disconnect when the circuit is overloaded or short-circuited, thereby protecting the safety of the circuit and equipment. The power converter 120 (also called a power brick) is a device used to convert the voltage of electrical energy.

[0047] In this embodiment, the power supply system 100 can include an N+N redundant power supply unit 140 (Power Supply Unit, PSU). Taking 3+3 redundant power supply as an example, the input end of the power supply unit 140 is connected to the commercial power, and the output end of the power supply unit 140 is connected to the input end of the first electronic fuse 110. After the power supply unit 140 is connected to the commercial power, it converts the commercial power into a power suitable for powering the server 1100 and transmits it to the first electronic fuse 110. The first electronic fuse 110 receives the power input and outputs electrical energy to the power converter 120.

[0048] The power converter 120 can convert the input electrical energy into electrical energy with a lower voltage level, that is, perform a step-down process. The electrical energy output by the power converter 120 is transmitted to the electrical components 200 of the server 1100 to power the electrical components 200.

[0049] Among them, the electrical components 200 can be a graphics processing unit 210 (Graphics Processing Unit, GPU), a network card 220 (Network Card, NETCARD), a switch integrated circuit 230 (Switch Integrated Circuit, SWIC), a hard disk drive backup 240 (Hard Disk Drive Backup, HDD BP), etc.

[0050] In this embodiment, a detection and control unit 121 is integrated in the power converter 120. The detection and control unit 121 is used to collect and amplify the current data at the output end of the power converter 120, and based on the amplified processing result, judge the short-circuit state at the output end of the power converter 120. When it is determined that the output end of the power converter 120 is in a short-circuit state, the power converter 120 is controlled to turn off.

[0051] Among them, the amplified processing result is the amplified current data.

[0052] The detection and control unit 121 collects the current at the output end of the power converter 120 through a built-in current acquisition device to form current data. The current data is amplified in the detection and control unit 121, that is, the current value of the current data is increased. According to the current data with the increased current value, it is determined whether the output end of the power converter 120 is in a short-circuit state. For example, the increased current value can be compared with a preset current value. When the increased current value is greater than the preset current value, it is determined that the output end of the power converter 120 is in a short-circuit state.

[0053] When it is determined that the output end of the power converter 120 is in a short-circuit state, the power converter 120 can be turned off by sending a turn-off signal to the power conversion unit of the power converter 120 to stop the power conversion process.

[0054] In the related art, when the output end of the power brick is short-circuited, a large instantaneous current will be generated at the input end of the power brick, which poses a risk of triggering the power-off of the front-stage electronic fuse (EFUSE), affecting the normal operation of other functions of the server.

[0055] According to the power supply system 100 of the server 1100 provided by the embodiments of the present application, by integrating the detection and control unit 121 in the power converter 120, the detection and control unit 121 collects the current data at the output end of the power converter 120 and amplifies the current data. According to the amplified current data, it is determined whether the output end of the power converter 120 is short-circuited, so that weak abnormal current signals in the initial stage of the short circuit are more easily captured, and the amplified current data can reach the over-current protection point faster. The power converter 120 is turned off before the actual short-circuit current at the output end of the power converter 120 reaches a relatively high value, reducing the instantaneous current generated at the input end of the power converter 120 and reducing the risk of triggering the power-off of the front-stage first electronic fuse 110, so that other functions of the server 1100 can operate normally.

[0056] In some embodiments, as Figure 2 shown, the detection and control unit 121 includes a current acquisition sub-unit 121a, a detection and processing sub-unit 121b, and a control sub-unit 121c that are connected in sequence. The current acquisition sub-unit 121a is used to collect current data and output the current data to the detection and processing sub-unit 121b. The detection and processing sub-unit 121b is used to amplify and process the current data and determine the short-circuit state of the output end of the power converter 120 according to the amplification and processing result. The control sub-unit 121c is used to control the power converter 120 to turn off when it is determined that the output end of the power converter 120 is in a short-circuit state.

[0057] In this embodiment, the detection control unit 121 includes a plurality of sub-units. The current acquisition sub-unit 121a, the detection processing sub-unit 121b, and the control sub-unit 121c cooperate with each other to detect the short-circuit state of the output end of the power converter 120, and when it is determined that there is a short circuit at the output end of the power converter 120, the power converter 120 is promptly controlled to turn off, thereby protecting the circuit and enabling other functions of the server 1100 to operate normally.

[0058] The current acquisition sub-unit 121a acquires the current data of the output end of the power converter 120 and transmits the acquired current data to the detection processing sub-unit 121b. The detection processing sub-unit 121b amplifies the current data, and when the current value of the amplified current data exceeds a certain threshold, it is determined that there is a short circuit at the output end of the power converter 120, and a corresponding prompt signal can be sent to the control sub-unit 121c. After receiving the corresponding prompt signal, the control sub-unit 121c knows that there is a short circuit at the output end of the power converter 120 and immediately controls the power converter 120 to turn off, thereby reducing circuit damage.

[0059] In some embodiments, the detection processing sub-unit 121b includes a current amplifier 521, a delay circuit, and a voltage comparator 524 connected in sequence. The current amplifier 521 is used to amplify the current data. The delay circuit is used to delay the transmission of the amplified processing result to the first input end of the voltage comparator 524. The second input end of the voltage comparator 524 is used to receive a preset voltage. The voltage comparator 524 is used to send a low-level signal to the control sub-unit 121c when the voltage at its first input end is higher than the voltage at its second input end.

[0060] Among them, the current amplifier 521 is a device that can amplify an input current signal to generate a larger-amplitude output current signal. The delay circuit is a circuit that can delay the transmission of current. The voltage comparator 524 has two input ends and one output end, and can compare the magnitudes of two input voltages and output a high-level signal or a low-level signal according to the comparison result.

[0061] The preset voltage is a voltage value preset in advance according to the required voltage of the electrical component 200, etc. The low-level signal is used to indicate that the output end of the power converter 120 is in a short-circuit state.

[0062] In this embodiment, the current amplifier 521, the delay circuit, and the voltage comparator 524 are connected in sequence. The current data is amplified by the current amplifier 521, and the amplified current data is delayed by the delay circuit and transmitted to the first input end of the voltage comparator 524 to generate a voltage at the first input end of the voltage comparator 524. The voltage comparator 524 compares the voltage at its first input end and the voltage at its second input end in real time (the first input end can be the negative end and the second input end can be the positive end).

[0063] When the output terminal of the power converter 120 is short-circuited, the amplitude of the amplified current data is large enough and continues to increase. The current data is delayed and transmitted to the first input terminal of the voltage comparator 524 through the delay circuit, so that the voltage at the first input terminal of the voltage comparator 524 is higher than the voltage at the second input terminal of the voltage comparator 524. The voltage comparator 524 generates a low-level signal and sends the low-level signal to the control subunit 121c. After receiving the low-level signal, the control subunit 121c knows that the output terminal of the power converter 120 is short-circuited and immediately controls the power converter 120 to turn off, thereby reducing circuit damage.

[0064] In this embodiment, a delay circuit is provided between the current amplifier 521 and the voltage comparator 524. The delay circuit delays the transmission of the amplified processing result, so that the abnormal current at the output terminal of the power converter 120 will be recognized as a short circuit only after a period of time, reducing false alarms caused by instantaneous current interference.

[0065] In some embodiments, the power converter 120 is configured to send an enable signal to the control subunit 121c when it is in the powered-on state. The control subunit 121 is configured to control the power converter 120 to turn off when it is determined that the output terminal of the power converter 120 is in a short-circuit state and the enable signal is received.

[0066] Wherein, the enable signal is used to indicate the powered-on state of the power converter 120.

[0067] In this embodiment, the power converter 120 starts to operate after the enable signal is valid and sends the enable signal to the control subunit 121c. When the power converter 120 is in the powered-on state and the output terminal is short-circuited, the control subunit 121c controls the power converter 120 to turn off. After the power converter 120 is turned off, the enable signal becomes invalid, and the control subunit 121c can stop the control action, saving system resources.

[0068] In some embodiments, the delay circuit includes a first resistor 522 and a first capacitor 523. The first end of the first resistor 522 is connected to the output terminal of the current amplifier 521, the second end of the first resistor 522 is connected to the first input terminal of the voltage comparator 524, the first end of the first capacitor 523 is connected between the first resistor 522 and the voltage comparator 524, and the second end of the first capacitor 523 is grounded.

[0069] In this embodiment, the amplified current data flows through the first resistor 522 to the first capacitor 523, causing the first capacitor 523 to start charging. Due to the characteristics of the capacitor, the first capacitor 523 will not be immediately fully charged, but gradually accumulates charge over time until the voltage at the first input terminal of the voltage comparator 524 is higher than the voltage at the second input terminal, at which point the voltage comparator 524 is triggered and outputs a low-level signal.

[0070] It can be understood that by adjusting the parameters of the first resistor 522 and the first capacitor 523, the delay duration of the delay circuit can be adjusted, thereby shortening the duration from the occurrence of a short circuit at the output terminal of the power converter 120 to the shutdown of the power converter 120, enabling the power converter 120 to be quickly shut down when a short circuit occurs at its output terminal and reducing the damage to the circuit.

[0071] In some embodiments, the current acquisition sub-unit 121a includes a second resistor 511 and a second capacitor 512. The second resistor 511 is connected in parallel with the second capacitor 512. The two ends of the second resistor 511 are connected to the two output terminals of the power converter 120, and the two ends of the second capacitor 512 are connected to the two input terminals of the detection and processing sub-unit 121b.

[0072] In this embodiment, the second resistor 511 serves as a sampling resistor. When the output current of the power converter 120 flows through the second resistor 511, a voltage drop will be generated across the two ends of the second resistor 511. This voltage drop is proportional to the flowing current, and the current data can be indirectly obtained through this voltage drop. The current data is transmitted to the second capacitor 512 for filtering processing.

[0073] In this embodiment, the second capacitor 512 is connected in parallel across the two ends of the second resistor 511, which can play a filtering role to filter out the high-frequency noise and transient interference output by the power converter 120, making the acquired current data more stable and accurate.

[0074] In some embodiments, the first power conversion module includes multiple power converters 120, the server 1100 includes multiple electrical components 200, the multiple electrical components 200 form multiple groups of electrical components 200, each group of electrical components 200 includes at least one electrical component 200, and the output terminals of the power converters 120 are used to be connected to the groups of electrical components 200 in one-to-one correspondence.

[0075] Among them, the electrical components 200 can be a Graphics Processing Unit (GPU) 210, a Network Card (NETCARD) 220, a Switch Integrated Circuit (SWIC) 230, a Hard Disk Drive Backup (HDD BP) 240, etc.

[0076] The power converter 120 can be divided into a power converter 120 for powering the graphics processing unit 210 and a power converter 120 for powering other electrical components 200.

[0077] As Figure 3 shown, four graphics processing units 210 form a group of graphics processing units 210, two groups of graphics processing units 210 are formed in the server 1100, the network card 220, the switch integrated circuit 230, and the hard disk backup 240 form a group of electrical components 200, and two power converters 120 for powering the graphics processing units 210 respectively power the two groups of graphics processing units 210, and the power converter 120 for powering other electrical components 200 powers the group of electrical components 200 formed by the network card 220, the switch integrated circuit 230, and the hard disk backup 240.

[0078] In the related art, as Figure 7 shown, powering eight GPUs is achieved by the parallel connection of two power bricks. The over-current protection point at the output end is high, and the over-current protection ability is weak. Once one of the eight GPUs has a power supply short circuit, the other GPUs will also lose power and cannot work.

[0079] In the embodiments of the present application, the two parallel-connected power converters 120 are disassembled into separate power converters 120, and the eight graphics processing units 210 are divided into two groups. Two independent power converters 120 respectively power the two groups of graphics processing units 210, so that the over-current protection (OCP) point at the output end of the power converter 120 is reduced, and the over-current protection ability is enhanced.

[0080] In some embodiments, the power supply system 100 of the server 1100 further includes a second power conversion module.

[0081] The second power conversion module includes a plurality of second electronic fuses 160. The input end of each second electronic fuse 160 is used to receive power input, and the output end of each second electronic fuse 160 is used to connect a fan 250.

[0082] Among them, the second electronic fuse 160 is a protection device that uses electronic components to simulate the function of a traditional fuse. It can automatically disconnect when the circuit is overloaded or short-circuited, thereby protecting the safety of the circuit and equipment. The fan 250 is used to dissipate heat from the server 1100. The second electronic fuse 160 and the fan 250 can be arranged on the system fan board 400 (FAN BOARD).

[0083] In this embodiment, the output end of the power supply unit 140 is connected to the input end of the second electronic fuse. After the power supply unit 140 is connected to the mains power, it converts the mains power into a power supply suitable for powering the server 1100 and transmits it to the second electronic fuse 160. The second electronic fuse 160 receives the power input and outputs electrical energy to the fan 250.

[0084] In the related art, there is usually only one total electronic fuse on the fan board. When one of the eight fans is short-circuited, the other fans will also stop working, which will pose a risk to the system heat dissipation.

[0085] In the embodiment of the present application, the total electronic fuse is disassembled into eight groups of second electronic fuses 160 with small currents, so that each fan 250 corresponds to a second electronic fuse 160. The OCP point of a single second electronic fuse 160 is reduced, and the overcurrent protection ability is enhanced. At the same time, each fan 250 on the fan 250 board can play a role in fault isolation.

[0086] Next, a specific embodiment of the power supply system 100 of the server 1100 will be introduced.

[0087] As Figure 3 shown, the power supply system 100 of the server 1100 includes an N+N redundant power supply unit 140 (taking 3+3 redundant power supply as an example), a system fan board 400, and a system substrate 300. The 54V electrical energy output by the power supply unit 140 is divided into two paths through the power distribution board 150 (Power Distribution Board, PDB). One path is used as the power supply input for the system fan board 400, and after passing through eight groups of second electronic fuses 160, 54V electrical energy is output in sequence to supply power to eight fans 250. The second path is used as the power supply input for the system substrate 300. After the first electronic fuse 110 converts out 54V electrical energy, the first power converter 120 converts out 12V electrical energy to supply power to four graphics processors 210, the second power converter 120 converts out 12V electrical energy to supply power to another four graphics processors 210, and the third power converter 120 converts out 12V electrical energy to supply power to the network card 220, the switch integrated circuit 230, and the hard disk backup 240.

[0088] When the 3+3 redundant power supply unit 140 is connected to the AC mains power, P54V_PSU will be generated, as Figure 4As shown, it is a schematic diagram of the power supply path from the power supply unit 140 to the graphics processor 210. The power supply unit 140 outputs P54V_PSU, which is converted to P54V by the first electronic fuse 110 as the power supply input to the power converter 120. Then, after the power converter 120 converts it to P12V, it is converted to P12V_GPU by the third electronic fuse 130 to supply power to a single graphics processor 210.

[0089] The detection and control unit 121 is integrated in the power converter 120. As Figure 5 shown, it is a schematic diagram of the structure of the detection and control unit 121. When the power converter 120 inputs 54V electrical energy and the enable signal EN is valid, the DC / DC converter 540 (DC / DC converter) converts 54V electrical energy into 12V electrical energy. As Figure 6 shown, by sampling the voltage drop across a section of copper foil RSEN (i.e., the second resistor 511) at the output end of the power converter 120, filtering out interference signals through the second capacitor 512, and then amplifying it by the current amplifier 521, current signals ISENP and ISENN are generated. ISENP and ISENN charge the first capacitor 523 through the first resistor 522 until the voltage V- at the inverting input terminal (the first input terminal) of the voltage comparator 524 is greater than the voltage VREF at the non-inverting input terminal (the second input terminal). At this time, the voltage comparator 524 outputs a low-level signal I_OC. The I_OC signal is ANDed with the EN signal of the power converter 120 to generate a signal SHUT to the control sub-unit 121c, and then a control signal SHUTDOWN signal is generated to turn off the DC / DC converter 540. The delay time of the SHUT signal triggered by the output current of the detected power converter 120 can be shortened by adjusting the parameters of the first resistor 522 and the first capacitor 523, thereby reducing the input instantaneous current of the power converter 120 and avoiding the overcurrent power-off of the front-stage first electronic fuse 110.

[0090] The working principle of the detection and control unit 121 for suppressing the instantaneous current of the front stage is described below.

[0091] Figure 8 It is a schematic diagram of the input and output currents of the power brick before introducing the detection and control unit 121. When the output P12V is shorted to the ground (GND), the current spike will rise to I_SHORT, which is much higher than the OCP point (I_OCP) set by the power brick. At this time, a large instantaneous current IIN_INST will be generated at the input end of the power brick due to the current spike I_SHORT, which is likely to trigger the overcurrent protection of the front-stage electronic fuse.

[0092] Figure 9Schematic diagram of input and output currents after introducing the detection control unit 121 into the power converter 120. When the output terminal P12V is shorted to GND, it takes some time for the output current to climb from the lowest point to the peak. At this time, the detection control unit 121 will amplify the detected current data, and then perform charging delay control through the RC delay circuit. By adjusting the parameters of the first resistor 522 and the first capacitor 523, the delay time interval can be shortened, so that the short-circuit current rises to a relatively low level I_SHORT' (such as Figure 9 the lower right dotted waveform shown), and the detection control unit 121 immediately triggers the SHUT DOWN signal to turn off the power converter 120. In this way, the instantaneous current IIN_INST' at the input end of the power converter 120 also decreases (such as Figure 9 the lower left dotted waveform shown).

[0093] Among them, CIN and COUT are the energy storage capacitors at the input and output ends of the power converter 120 in sequence.

[0094] The power supply system 100 of the server 1100 provided in the embodiment of the present application disassembles a single large-current electronic fuse into 8 groups of small-current electronic fuses, that is, multiple second electronic fuses 160; disassembles two parallel power bricks on the system board 300 into separate power converters 120 for power supply. At the same time, divides 8 GPUs into two groups, and each group is powered by a separate power converter 120. The detection control unit 121 is integrated in the power converter 120, that is, the output current detection control mechanism. By adjusting the delay interval for detecting a short circuit, the output of the power converter 120 is controlled to be turned off, which can effectively reduce the short-circuit current at the output end of the power converter 120.

[0095] The following takes the implementation of the power supply scheme of the AI server 1100 system that supplies power to 8 GPUs of 450W as an example to illustrate the specific working process of the power supply system 100 of the server 1100 provided in the embodiment of the present application as follows:

[0096] 1) The system fan board 400 is powered by 54V, and each fan 250 corresponds to 1 group of 54EFUSE. The selection specification of the EFUSE is selected according to 1.2 times the rated current (generally 6A) of the fan 250, and the OCP point of the EFUSE is set according to 1.2 - 1.5 times the peak current (generally 10A) of the fan 250.

[0097] 2) 8 GPUs are deployed and installed on the system board 300. The total power of the SW unit, network card unit and HDD unit is about 800W, and the 1000W power converter 120 specification can be selected.

[0098] The GPU is split into two groups, and the total power of 4 GPUs in each group is 1800W. The power converter 120 is selected with a 2000W specification.

[0099] The detection and control unit 121 is placed inside two types of power converters 120 with power ratings of 1000W and 2000W.

[0100] 2) The converted current requirement for 54V = 8 * 450 / 54 / 0.97 + 800 / 54 / 0.97 = 84A. The OCP point setting of the front-stage 54V EFUSE (the first electronic fuse 110) = 1.2 * 84 = 100.8A. Therefore, the Rsense resistance value selection for a single group of EFUSE: 1mohm, 3W, 1%, 2512 package specification, and the quantity is 2 pieces.

[0101] 2) The power supply for the system board 300 is taken from the 3 + 3 redundant PSU end through a radial socket (RADSOK) power supply cable P54V_PSU. The RADSOK power connectors at the system board 300 end and the cable end are selected with a current-carrying capacity of 170A.

[0102] 3) For the GPU EFUSE chip selection, a 54V solution is adopted. The specific selection reference: LM5069MMX-1NOPB. The external MOS transistor selection: CSD19536KTT.

[0103] 4) For the single group of 54V EFUSE on the fan 250 board, LM5069MMX-1NOPB is paired with a single MOS: CSD19536KTT. The P54V_EFUSE of the system board 300 is implemented by using LM5069MMX-1NOPB paired with 4 MOS: CSD19536KTT.

[0104] 5) The implementation of the internal short-circuit current detection and control of the power converter 120 can be combined with Figure 5 the current structure to sequentially determine the current detection of the current-carrying copper foil RSEN, as Figure 6As shown in the figure, if the current passing through the 12V copper foil is I, then vias are drilled at both ends of this section of copper foil to switch layers to the inner layer of the Printed Circuit Board (PCB). Then, according to the inner differential routing, the current sense signals ISENP and ISENN are routed out and fed back to the input end of the current amplifier 521. The parameters of the second capacitor 512, the current amplifier 521, the first capacitor 523, and the first resistor 522 can be set according to the previous stage P54V EFUSE OCP point. The selected voltage comparator 524, i.e., the COMP chip reference benchmark. After the output signal I_OC of the COMP voltage comparator 524 and the enable signal EN of the power converter 120 are ANDed, it is transmitted to the control sub-unit 121c, and then the control sub-unit 121c issues a SHUTDOWN signal to control the power converter 120 to shut down.

[0105] In the related art, as Figure 7 shown, it is a schematic diagram of the power supply structure of an existing AI server, including: N+N redundant input power supply unit (taking 3+3 redundant power supply as an example), system fan board, and system substrate. The system substrate includes a P54V electronic fuse unit, P54V to 12V power brick 0, P54V to 12V power brick 1, and P54V to 12V power brick 2. Power brick 1 and power brick 2 are connected in parallel to supply power to 8 300W graphics processors. Power brick 3 outputs 12V to supply power to the switching chip, network card, hard disk backup, and peripheral chips on the system substrate.

[0106] When the 3+3 redundant input power supply unit is connected to the AC mains, the P54V_PSU output voltage is generated and divided into two paths: the first path is used as the power supply input for the fan board, and after passing through the 54V electronic fuse unit, 54V is output to supply power to eight fans respectively. The second path is used as the power supply input for the system substrate. After passing through the 54V electronic fuse unit and outputting P54V, power brick 0 and power brick 1 are connected in parallel to convert and output P12V_GPU to supply power to these 8 graphics processors, namely graphics processor 0 - graphics processor 7. At the same time, power brick 2 converts and outputs P12V_2 to supply power to the network card, switch integrated circuit, and hard disk backup.

[0107] The power brick is an independent DC / DC module device that realizes the conversion of P54V to P12V. Figure 7 In

[0108] However, there is only 1 total electronic fuse unit on the fan board. When one of the 8 fans is short-circuited, the other fans will also stop working, which poses a risk to the system heat dissipation.

[0109] On the system board, the power supply for 8 graphics processors is achieved by paralleling two power bricks. The overcurrent protection point at the output end is very high, and the overcurrent protection ability is very weak. Once there is a short circuit in the power supply of one of the 8 graphics processors, the other graphics processors will also lose power and cannot work.

[0110] A short circuit at the output of the power brick will cause a large instantaneous current at the input end of the power brick, posing a risk of triggering the power-off of the front-stage 54V electronic fuse unit and affecting the normal operation of other functions of the AI server (such as: switching chips, network cards, hard disks, etc.).

[0111] The power supply system 100 of the server 1100 provided in the embodiment of the present application disassembles the single-group total electronic fuse unit on the fan 250 board into 8 groups of second electronic fuses 160 with small currents, so that each fan 250 corresponds to a second electronic fuse 160. The OCP point of a single group of second electronic fuses 160 becomes smaller, and the overcurrent protection ability becomes stronger. At the same time, each fan 250 on the fan 250 board can play a role in fault isolation. The two parallel power bricks on the system board 300 are disassembled into separate power converters 120 for power supply. At the same time, the 8 graphics processors 210 are divided into two groups, and each group is powered by a separate power converter 120. In this way, the OCP point at the output end of the power converter 120 becomes smaller, and the overcurrent protection ability becomes stronger. An output current detection, processing, judgment, and control mechanism is introduced inside the power converter 120, and the judgment reference can be set according to the OCP point of the front-stage first electronic fuse 110, which can effectively prevent the output end of the power converter 120 from short-circuiting and avoid power-off due to the triggering of OCP by the front-stage first electronic fuse 110.

[0112] It can solve the problems of fault isolation of the fan 250 and the graphics processor 210 and the weak overcurrent protection performance at the output of the power converter 120, and solve the problem of power-off of the front-stage first electronic fuse 110 when the output end of the power converter 120 is short-circuited.

[0113] The embodiment of the present application also provides a control method for the power supply system 100 of a server 1100.

[0114] As Figure 10 shown, the control method of the power supply system 100 of the server 1100 includes:

[0115] Step 1010: Collect and amplify the current data at the output end of the power converter 120.

[0116] Step 1020: Judge the short-circuit state at the output end of the power converter 120 according to the amplification result.

[0117] Step 1030: Control the power converter 120 to turn off when it is determined that the output end of the power converter 120 is in a short-circuit state.

[0118] According to the control method of the power supply system 100 of the server 1100 provided by the embodiments of the present application, by integrating a detection and control unit 121 in the power converter 120, the detection and control unit 121 collects current data at the output end of the power converter 120, amplifies the current data, and determines whether a short circuit occurs at the output end of the power converter 120 according to the amplified current data, so that weak abnormal current signals in the initial stage of the short circuit are more easily captured, the amplified current data can reach the over-current protection point faster, the power converter 120 is turned off before the actual short-circuit current at the output end of the power converter 120 reaches a relatively high value, the instantaneous current generated at the input end of the power converter 120 is reduced, and the risk of triggering the power-off of the front-stage first electronic fuse 110 is reduced, so that other functions of the server 1100 can operate normally.

[0119] In some embodiments, judging the short-circuit state of the output end of the power converter 120 according to the amplification processing result includes:

[0120] Delaying the transmission of the amplification processing result to the first input end of the voltage comparator 524;

[0121] When the voltage at the first input end of the voltage comparator 524 is higher than the voltage at the second input end of the voltage comparator 524, a low-level signal is sent to the control sub-unit 121c, and the low-level signal is used to indicate that the output end of the power converter 120 is in a short-circuit state.

[0122] The embodiments of the present application also provide a server 1100.

[0123] As Figure 11 shown, the server 1100 includes an electrical component 200 and the power supply system 100 of the above-mentioned server 1100, and the output end of the power converter 120 in the first power conversion module of the power supply system 100 is connected to the electrical component 200.

[0124] According to the server 1100 provided by the embodiments of the present application, by integrating a detection and control unit 121 in the power converter 120, the detection and control unit 121 collects current data at the output end of the power converter 120, amplifies the current data, and determines whether a short circuit occurs at the output end of the power converter 120 according to the amplified current data, so that weak abnormal current signals in the initial stage of the short circuit are more easily captured, the amplified current data can reach the over-current protection point faster, the power converter 120 is turned off before the actual short-circuit current at the output end of the power converter 120 reaches a relatively high value, the instantaneous current generated at the input end of the power converter 120 is reduced, and the risk of triggering the power-off of the front-stage first electronic fuse 110 is reduced, so that other functions of the server 1100 can operate normally.

[0125] 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. Of course, it can also be implemented by hardware, but in many cases, the former is a better implementation method.

[0126] The embodiment of the present application further provides a control device for a power supply system 100 of a server 1100.

[0127] The control device for the power supply system 100 of the server 1100 includes:

[0128] A first processing module, configured to collect and amplify the current data at the output end of the power converter 120.

[0129] A second processing module, configured to judge the short - circuit state of the output end of the power converter 120 according to the amplified processing result.

[0130] A third processing module, configured to control the power converter 120 to turn off when it is determined that the output end of the power converter 120 is in a short - circuit state.

[0131] According to the control device for the power supply system 100 of the server 1100 provided by the embodiment of the present application, by integrating a detection and control unit 121 in the power converter 120, the detection and control unit 121 collects the current data at the output end of the power converter 120 and amplifies the current data. According to the amplified current data, it is judged whether the output end of the power converter 120 is short - circuited, so that weak abnormal current signals in the initial stage of the short - circuit are more easily captured, and the amplified current data can reach the over - current protection point faster. Before the actual short - circuit current at the output end of the power converter 120 reaches a relatively high value, the power converter 120 is turned off, reducing the instantaneous current generated at the input end of the power converter 120 and reducing the risk of triggering the power - off of the first - stage electronic fuse 110, so that other functions of the server 1100 can operate normally.

[0132] In some embodiments, the second processing module is further configured to delay the transmission of the amplified processing result to the first input end of the voltage comparator 524;

[0133] When the voltage at the first input end of the voltage comparator 524 is higher than the voltage at the second input end of the voltage comparator 524, a low - level signal is sent to the control sub - unit 121c, and the low - level signal is used to indicate that the output end of the power converter 120 is in a short - circuit state.

[0134] For the description of the features in the corresponding embodiment of the control device for the power supply system 100 of the server 1100, reference can be made to the relevant description in the corresponding embodiment of the control method for the power supply system 100 of the server 1100, which will not be elaborated here one by one.

[0135] An embodiment of the present application further provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any of the above-described control method embodiments of the power supply system 100 of the server 1100.

[0136] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is configured to execute the steps in any of the above-described control method embodiments of the power supply system 100 of the server 1100 when running.

[0137] In an exemplary embodiment, the above computer-readable storage medium may include, but is not limited to: USB flash drives, read-only memories (ROM), random access memories (RAM), mobile hard disks, magnetic disks, or optical discs, etc., various media that can store computer programs.

[0138] An embodiment of the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, it implements the steps in any of the above-described control method embodiments of the power supply system 100 of the server 1100.

[0139] An embodiment of the present application further provides 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, it implements the steps in any of the above-described control method embodiments of the power supply system 100 of the server 1100.

[0140] 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 the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to their 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 for each specific application to implement the described functions, but such implementation should not be considered to exceed the scope of the present application.

[0141] The above has introduced in detail a power supply system 100 for a server 1100 provided by the present application, a control method for the power supply system 100, and the server 1100. 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 this 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 system for a server, characterized in that, Comprising: A first power conversion module, including a first electronic fuse and a power converter. The input end of the first electronic fuse is used to receive power input. The input end of the power converter is connected to the output end of the first electronic fuse, and the output end of the power converter is used to connect to the power-consuming components of the server; A detection and control unit is integrated in the power converter. The detection and control unit is used to collect and amplify the current data at the output end of the power converter, and based on the amplified processing result, judge the short-circuit state of the output end of the power converter. When it is determined that the output end of the power converter is in the short-circuit state, control the power converter to turn off.

2. The power supply system of the server according to claim 1, wherein, The detection and control unit includes a current acquisition sub-unit, a detection and processing sub-unit, and a control sub-unit connected in sequence. The current acquisition sub-unit is used to collect the current data and output the current data to the detection and processing sub-unit. The detection and processing sub-unit is used to amplify the current data and based on the amplified processing result, judge the short-circuit state of the output end of the power converter. The control sub-unit is used to control the power converter to turn off when it is determined that the output end of the power converter is in the short-circuit state.

3. The power supply system of the server according to claim 2, wherein The detection and processing sub-unit includes a current amplifier, a delay circuit, and a voltage comparator connected in sequence. The current amplifier is used to amplify the current data. The delay circuit is used to delay the transmission of the amplified processing result to the first input end of the voltage comparator. The second input end of the voltage comparator is used to receive a preset voltage. The voltage comparator is used to send a low-level signal to the control sub-unit when the voltage at its first input end is higher than the voltage at its second input end. The low-level signal is used to indicate that the output end of the power converter is in the short-circuit state.

4. The power supply system of the server according to claim 3, characterized in that, The delay circuit includes a first resistor and a first capacitor. The first end of the first resistor is connected to the output end of the current amplifier. The second end of the first resistor is connected to the first input end of the voltage comparator. The first end of the first capacitor is connected between the first resistor and the voltage comparator, and the second end of the first capacitor is grounded.

5. The power supply system of the server according to claim 2, characterized in that, The current acquisition sub-unit includes a second resistor and a second capacitor. The second resistor is in parallel with the second capacitor. The two ends of the second resistor are connected to the two output ends of the power converter, and the two ends of the second capacitor are connected to the two input ends of the detection and processing sub-unit.

6. The power supply system of the server according to any one of claims 1-5, characterized in that, The first power conversion module includes a plurality of the power converters. The server includes a plurality of the power-consuming components. The plurality of power-consuming components form a plurality of power-consuming component groups. Each power-consuming component group includes at least one of the power-consuming components. The output end of the power converter is used to be connected to the power-consuming component groups in one-to-one correspondence.

7. The power supply system of the server according to any one of claims 1-5, characterized in that, Also comprising: A second power conversion module, including a plurality of second electronic fuses. The input end of each second electronic fuse is used to receive the power input, and the output end of each second electronic fuse is used to connect to a fan.

8. A control method for a power supply system of a server according to any one of claims 1-7, characterized in that, Comprising: Collect and amplify the current data at the output end of the power converter; Judge the short - circuit state of the output end of the power converter according to the amplification result; When it is determined that the output end of the power converter is in the short - circuit state, control the power converter to turn off.

9. The control method of the power supply system of the server according to claim 8, characterized in that, The judging of the short - circuit state of the output end of the power converter according to the amplification result includes: Delay the transmission of the amplification result to the first input end of the voltage comparator; When the voltage at the first input end of the voltage comparator is higher than the voltage at the second input end of the voltage comparator, send a low - level signal to the control sub - unit, and the low - level signal is used to indicate that the output end of the power converter is in the short - circuit state.

10. A server, characterized in that, Including: Electrical components; The power supply system of the server according to any one of claims 1 - 7, wherein the output end of the power converter in the first power conversion module of the power supply system is connected to the electrical components.

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