CN113991973B - A programmable modular power supply and its application method - Google Patents

Abstract

The invention provides a programmable modularized power supply and an application method thereof, wherein the power supply comprises a power supply input end, a power supply output end, a transformer and a control module; the primary of the transformer is connected to the power input end; the secondary side of the transformer comprises multiple paths of output line packets, and each path of output line packet is connected to the power supply output end through an MOS tube; adjacent output line packets are connected through MOS tubes; the control module is respectively connected with the frequency modulation control end of the transformer and the control end of the MOS tube, and the control module controls the conduction of different MOS tubes to control the serial connection or the parallel connection of the multi-output line packets so as to realize the output of different voltages. The power supply meets the requirements of two specifications, and is favorable for unified management and use of purchasing, inventory and production lines. The multiplexing rate of the components is improved, and the quality control of the product is obviously improved.

Description

A programmable modular power supply and its application method

technical field

The invention relates to the technical field of modular power supply design, in particular to a programmable modular power supply and an application method.

Background technique

The server power supply input is divided into 12V input and 54V input. The 12V input is mainly used for conventional server systems. The system input 12V voltage is converted by the motherboard VR to form 5V/3.3V and other voltages to supply power for memory, CPU, hard disk and other components. The 54V input system is mainly used for GPU configuration models. Because some GPUs are directly powered by 54V and consume a lot of power, the server system is directly powered by 54V, and the 54V voltage is converted into 12V/5V/3.3V by the motherboard VR for other non The GPU part is powered.

In the prior art, the server power supply PSU is generally divided into two types of output voltage specifications, and PSUs with different output specifications need to be used for power supply according to different systems. In order to avoid system burnout caused by the abnormal mixed use of PSUs with different output voltage specifications, the 12V/54V PSUs must meet the structural foolproof requirements to avoid mixed use.

The existing technology needs to use different PSUs for power supply according to different usage scenarios, which is not conducive to the procurement of PSU materials, warehouse material preparation, and production line production. Two kinds of materials need to be classified and controlled. The design and development end requires two sets of development systems, which increases the R&D cost and design cycle.

Contents of the invention

Different PSUs are used for power supply according to different usage scenarios, which is not conducive to the procurement of PSU materials, warehouse material preparation, and production line production. Two kinds of materials need to be classified and controlled. The design and development end requires two sets of development systems, which increases the cost of research and development and the design cycle. The invention provides a programmable modular power supply and its application method to effectively solve the unification of the output specifications of 12V/54V power supplies for different servers. need.

Technical scheme of the present invention is:

On the one hand, the technical solution of the present invention provides a programmable modular power supply, including a power supply input terminal, a power supply output terminal, a transformer and a control module;

The primary of the transformer is connected to the input terminal of the power supply; the secondary of the transformer includes multiple output line packages, and each output line package is connected to the output terminal of the power supply through a MOS tube;

Adjacent output wire packages are connected through MOS tubes;

The control module is respectively connected with the frequency modulation control terminal of the transformer and the control terminal of the MOS tube, and controls the conduction of different MOS tubes through the control module to control the series or parallel connection of multiple output line packages to realize the output of different voltages.

Through the design of the invention, the unified requirements of different servers for two power supply output specifications are effectively solved. One power supply meets the requirements of two specifications, which is conducive to the unified management and use of procurement, inventory and production lines. The reuse rate of components is improved, and the product quality control will also be significantly improved.

Preferably, the secondary side of the transformer includes N output wire packages, and each output wire package is provided with a first output terminal and a second output terminal;

MOS tubes include isolation MOS tubes and MOS switch tubes;

The first output end of each output line package is respectively connected to the output end of the power supply through an isolated MOS tube;

The power supply also includes an anti-backflow module. The anti-backflow module is connected to the isolated MOS tube. When the anti-backflow module detects an output failure of the output line package, it controls the connected isolation MOS tube to close;

The second output ends of the first N-1 output line packages are grounded respectively through MOS switch tubes; the second output ends of the Nth output line package are grounded;

Adjacent output wire packages are connected through MOS switch tubes;

The control modules are respectively connected with the control terminals of the MOS switch tubes.

The input terminal of the anti-backflow module is connected to the output of the output line package, and the output terminal of the anti-backflow module is connected to the output terminal of the power supply. The anti-backflow module detects that the voltage difference between the output voltage of the output line package and the voltage at the output terminal of the power supply is not within the set value. In the threshold range, the control terminal of the anti-backflow module outputs a control signal to control the isolation MOS tube connected in parallel with the anti-backflow module to turn off. When it is used as a multi-channel parallel output, one of the faults does not affect the output voltage.

Preferably, the anti-backflow module connected to each output line pack is connected to the gate of the isolated MOS transistor of the road, and the drain of the isolated MOS transistor connected to the output line pack of each road is connected to the first output terminal of the output line pack , the source of the isolation MOS tube connected to each output line is connected to the output terminal of the power supply.

Preferably, the second output terminal of the first output line package is connected to the source of the MOS switch tube, the drain of the MOS switch tube is connected to the first output terminal of the second output line package, and the gate of the MOS switch tube The pole is connected to the control module; the second output end of the second output line package is connected to the source of the next MOS switch tube, connected one by one, and the second output end of the N-1th output line package is connected to the MOS switch The source of the MOS switch tube and the drain of the MOS switch tube are connected to the first output end of the Nth output line package.

When multiple output line packs are output in series, the first output terminal of the Nth output line pack is connected to the power output terminal, the second output end of the first output line pack is grounded, and the output voltage of the multi-output line pack is connected in series. output.

Preferably, the secondary side of the transformer includes four output line packages, which are respectively the first output line package, the second output line package, the third output line package, and the fourth output line package;

The MOS switch tube includes a first MOS switch tube, a second MOS switch tube, a third MOS switch tube, a fourth MOS switch tube, a fifth MOS switch tube, and a sixth MOS switch tube;

The second output end of the first output line package is connected to the source of the fourth MOS switch tube, the drain of the fourth MOS switch tube is connected to the first output end of the second output line package, and the fourth MOS switch tube The gate is connected to the control module; the second output terminal of the second output line package is connected to the source of the fifth MOS switch tube, and the drain of the fifth MOS switch tube is connected to the first output terminal of the second output line package , the gate of the fifth MOS switch is connected to the control module; the second output terminal of the third output line package is connected to the source of the sixth MOS switch, and the drain of the sixth MOS switch is connected to the fourth output The first output terminal of the wire package and the gate of the sixth MOS switch tube are connected to the control module.

Preferably, the isolation MOS transistor further includes a first isolation MOS transistor, a second isolation MOS transistor, a third isolation MOS transistor, and a fourth isolation MOS transistor, and the anti-backflow module includes a first anti-backflow module, a second anti-backflow module, a third Anti-backflow module, fourth anti-backflow module;

The drain of the first isolation MOS transistor is connected to the first end of the first output line package, the gate of the first isolation MOS transistor is connected to the control output end of the first anti-backflow module, and the input end of the first anti-backflow module is connected to the first end of the first anti-backflow module. The first end of the first output line pack is connected, the output end of the first anti-backflow module is connected to the output end of the power supply; the second end of the first output line pack is connected to the drain of the first MOS switch tube, and the first MOS The source of the switch tube is grounded, and the gate of the first MOS switch tube is connected to the control module;

The drain of the second isolation MOS transistor is connected to the first end of the second output line package, the gate of the second isolation MOS transistor is connected to the control output end of the second anti-backflow module, and the input end of the second anti-backflow module is connected to The first end of the second output line package is connected, the output end of the second anti-backflow module is connected to the output end of the power supply; the second end of the second output line package is connected to the drain of the second MOS switch tube, and the second MOS The source of the switch tube is grounded, and the gate of the second MOS switch tube is connected to the control module;

The drain of the third isolation MOS transistor is connected to the first end of the third output line package, the gate of the third isolation MOS transistor is connected to the control output end of the third anti-backflow module, and the input end of the third anti-backflow module is connected to The first end of the third output line package is connected, the output end of the third anti-backflow module is connected to the output end of the power supply; the second end of the third output line package is connected to the drain of the third MOS switch tube, and the third MOS The source of the switch tube is grounded, and the gate of the third MOS switch tube is connected to the control module;

The drain of the fourth isolation MOS transistor is connected to the first end of the fourth output line package, the gate of the fourth isolation MOS transistor is connected to the control output end of the fourth anti-backflow module, and the input end of the fourth anti-backflow module is connected to the The first end of the fourth output line pack is connected, the output end of the fourth anti-backflow module is connected to the output end of the power supply, and the second end of the fourth output line pack is grounded.

The programmable modular power supply internally designs 4 independent output line packs (voltage conversion modules), accepts the power supply requirements of the system through PMBUS communication, and the control module controls the internal output line packs to run in series or in parallel to meet the output power supply requirements and realize programmable voltage output. Improve power reuse rate.

Preferably, the control module includes a DSP.

Preferably, the anti-backflow module includes an LM5050 chip.

Preferably, the output of each output line package enters the output terminal of the power supply after being connected to a MOS tube through a rectification and filtering module.

In the second aspect, the technical solution of the present invention provides an application method of a programmable modular power supply, and the programmable modular power supply is the programmable modular power supply described in the first aspect;

When the programmable modular power supply is initially powered on and in the standby state, it communicates with the system BMC through the PMBUS bus to confirm the system's power supply output requirements for the programmable modular power supply;

According to the power supply output requirements, the internal control module of the programmable modular power supply controls the conduction of different MOS tubes and controls the series or parallel connection of multiple output line packs to realize the output of different voltages;

When the output of each output line package fails, the anti-backflow module of this road outputs a control signal to control the isolation MOS tube connected to this road to close, and at the same time, the control module generates an alarm through PMBUS communication.

Preferably, when the secondary of the transformer includes four output wire packages and the control module includes a DSP, the internal control module of the programmable modular power supply controls the conduction of different MOS transistors to control the series or parallel connection of multiple output wire packages according to the power supply output requirements , the steps to realize the output of different voltages include:

When the system requires the programmable modular power supply to output 12V, the internal DSP of the programmable modular power supply controls the first isolated MOS tube, the second isolated MOS tube, the third isolated MOS tube, the fourth isolated MOS tube, the first MOS switch tube, The second MOS switch tube and the third MOS switch tube are turned on, and the fourth MOS switch tube, the fifth MOS switch tube, and the sixth MOS switch tube are controlled to be turned off, so that the four 12V outputs inside the programmable modular power supply are connected in parallel, and the programmable module The chemical power supply outputs 12V externally to meet the system power supply requirements;

When the system requires the programmable modular power supply to output 54V, the DPS controls and adjusts the PFM frequency of the transformer so that each output line package outputs a voltage of 13.5V, and at the same time controls the fourth MOS switch, the fifth MOS switch, and the sixth MOS switch to conduct turn on, and control the first isolation MOS tube, the second isolation MOS tube, the third isolation MOS tube, the fourth isolation MOS tube, the first MOS switch tube, the second MOS switch tube, and the third MOS switch tube to be turned off. Connect the 4 internal outputs of the programmable modular power supply in series to meet the 54V voltage output and supply power for the GPU server system.

It can be seen from the above technical solutions that the present invention has the following advantages: it is beneficial to unified management and use of procurement, inventory and production lines. The reuse rate of components is improved, and the product quality control will also be significantly improved. By designing four independent output modules inside the PSU, the PSU can output in parallel or in series according to the system requirements under the control of the internal program, so as to meet the power supply output requirements of different system application scenarios (GPU/general server). The versatility of the PSU is greatly improved, and there is no need to develop a separate power supply for the GPU configuration. At the same time, the reusability of components inside the PSU has also been improved, which is conducive to centralized procurement, unified management, and reduced component costs.

In addition, the design principle of the present invention is reliable, the structure is simple, and has very wide application prospects.

It can be seen that, compared with the prior art, the present invention has outstanding substantive features and remarkable progress, and the beneficial effects of its implementation are also obvious.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, In other words, other drawings can also be obtained from these drawings on the premise of not paying creative work.

Fig. 1 is a schematic connection block diagram of a programmable modular power supply according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a transformer according to an embodiment of the present invention.

Fig. 3 is a schematic connection block diagram of a programmable modular power supply of a 4-way output line package according to an embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , an embodiment of the present invention provides a programmable modular power supply, including a power supply input terminal VIN, a power supply output terminal OUT, a transformer U1 and a control module U2;

The primary IN of the transformer U1 is connected to the power input terminal VIN; the secondary of the transformer includes multiple output line packages 1-N, and each output line package is connected to the power supply output terminal OUT through a MOS tube;

Adjacent output wire packages are connected through MOS tubes;

The control module U2 is respectively connected to the frequency modulation control terminal of the transformer U1 and the control terminal of the MOS tube, and controls the conduction of different MOS tubes through the control module to control the series or parallel connection of multiple output line packages to realize the output of different voltages.

Through the design of the invention, the unified requirements of different servers for two power supply output specifications are effectively solved. One power supply meets the requirements of two specifications, which is conducive to the unified management and use of procurement, inventory and production lines. The reuse rate of components is improved, and the product quality control will also be significantly improved.

In some embodiments, the secondary side of the transformer U1 includes N output wire packages, and each output wire package is provided with a first output terminal and a second output terminal;

MOS tubes include isolation MOS tubes and MOS switch tubes;

The first output terminal of each output line package is connected to the power supply output terminal OUT through the isolation MOS tube;

The power supply also includes an anti-backflow module. The anti-backflow module is connected to the isolated MOS tube. When the anti-backflow module detects an output failure of the output line package, it controls the connected isolation MOS tube to close;

The second output ends of the first N-1 output line packages are grounded respectively through MOS switch tubes; the second output ends of the Nth output line package are grounded;

Adjacent output wire packages are connected through MOS switch tubes;

The control module U2 is respectively connected to the control terminals of the MOS switch tubes.

The input terminal of the anti-backflow module is connected to the output of the output line package, and the output terminal of the anti-backflow module is connected to the output terminal of the power supply. The anti-backflow module detects that the voltage difference between the output voltage of the output line package and the voltage at the output terminal of the power supply is not within the set value. In the threshold range, the control terminal of the anti-backflow module outputs a control signal to control the isolation MOS tube connected in parallel with the anti-backflow module to turn off. When it is used as a multi-channel parallel output, one of the faults does not affect the output voltage.

In some embodiments, the anti-backflow module connected to each output line pack is connected to the gate of the isolation MOS transistor of the road, and the drain of the isolation MOS transistor connected to each output line pack is connected to the first output line pack of the road. One output terminal, the source of the isolated MOS transistor connected to each output line is connected to the power supply output terminal OUT.

The second output end of the first output line pack is connected to the source of the MOS switch tube, the drain of the MOS switch tube is connected to the first output end of the second output line pack, and the gate of the MOS switch tube is connected to Control module; the second output terminal of the second output line package is connected to the source of the next MOS switch tube, connected one by one, and the second output terminal of the N-1th output line package is connected to the source of the MOS switch tube pole, and the drain of the MOS switch tube is connected to the first output terminal of the Nth output line package.

When multiple output line packs are output in series, the first output terminal of the Nth output line pack is connected to the power output terminal, the second output end of the first output line pack is grounded, and the output voltage of the multi-output line pack is connected in series. output.

In some embodiments, as shown in FIG. 3 , the secondary side of the transformer includes four output line packages, which are respectively the first output line package 1, the second output line package 2, the third output line package 3, and the second output line package. Four output line pack 4;

The MOS switch tubes include a first MOS switch tube Q1, a second MOS switch tube Q2, a third MOS switch tube Q3, a fourth MOS switch tube Q4, a fifth MOS switch tube Q5, and a sixth MOS switch tube Q6;

The second output terminal of the first output line package 1 is connected to the source of the fourth MOS switch transistor Q4, the drain of the fourth MOS switch tube Q4 is connected to the first output terminal of the second output line package 2, and the fourth The gate of the MOS switch Q4 is connected to the control module U2; the second output terminal of the second output line package 2 is connected to the source of the fifth MOS switch Q5, and the drain of the fifth MOS switch Q5 is connected to the second The first output end of the first output line package 2, the gate of the fifth MOS switch tube Q2 is connected to the control module U2; the second output end of the third output line package 3 is connected to the source electrode of the sixth MOS switch tube Q6, The drain of the sixth MOS switch Q6 is connected to the first output terminal of the fourth output line package 4, and the gate of the sixth MOS switch Q6 is connected to the control module U2.

The isolated MOS transistor also includes a first isolated MOS transistor M1, a second isolated MOS transistor M2, a third isolated MOS transistor M3, and a fourth isolated MOS transistor M4, and the anti-backflow module includes a first anti-backflow module 11 and a second anti-backflow module 22 , the third anti-backflow module 33, the fourth anti-backflow module 44;

The drain of the first isolation MOS transistor M1 is connected to the first end of the first output line package 1, the gate of the first isolation MOS transistor M1 is connected to the control output terminal of the first anti-backflow module 11, and the first anti-backflow module The input end of 11 is connected to the first end of the first output line package 1, the output end of the first anti-backflow module 11 is connected to the power supply output terminal OUT; the second end of the first output line package 1 is connected to the first MOS The drain of the switching tube Q1, the source of the first MOS switching tube Q1 are grounded, and the gate of the first MOS switching tube Q1 is connected to the control module U2;

The drain of the second isolation MOS transistor M2 is connected to the first end of the second output line package 2, the gate of the second isolation MOS transistor M2 is connected to the control output terminal of the second anti-inverting module 22, and the second anti-inverting module 22 is connected to the first end of the second output line package 2, and the output terminal of the second anti-backflow module 22 is connected to the power supply output terminal OUT; the second end of the second output line package 2 is connected to the second MOS The drain of the switch tube Q2, the source of the second MOS switch Q2 are grounded, and the gate of the second MOS switch Q2 is connected to the control module U2;

The drain of the third isolation MOS transistor M3 is connected to the first end of the third output line package 3, the gate of the third isolation MOS transistor M3 is connected to the control output terminal of the third anti-backflow module 33, and the third anti-backflow module The input terminal of 33 is connected to the first end of the third output line package 3, and the output terminal of the third anti-backflow module 33 is connected to the power supply output terminal OUT; the second end of the third output line package 3 is connected to the third MOS The drain of the switch tube Q3, the source of the third MOS switch Q3 are grounded, and the gate of the third MOS switch Q3 is connected to the control module U2;

The drain of the fourth isolation MOS transistor M4 is connected to the first end of the fourth output line package 4, the gate of the fourth isolation MOS transistor M4 is connected to the control output terminal of the fourth anti-backflow module 44, and the fourth anti-backflow module The input end of 44 is connected to the first end of the fourth output line package 4, the output end of the fourth anti-backflow module 44 is connected to the power output terminal OUT, and the second end of the fourth output line package 4 is grounded.

The programmable modular power supply internally designs 4 independent output line packs (voltage conversion modules), accepts the power supply requirements of the system through PMBUS communication, and the control module controls the internal output line packs to run in series or in parallel to meet the output power supply requirements and realize programmable voltage output. Improve power reuse rate.

It should be noted that the control module includes a DSP. The anti-backflow module includes the LM5050 chip. The output of each output line package enters the output terminal of the power supply after being connected to the MOS tube by the rectification and filtering module. When the DSP controls the on-off of the MOS tube, the existing MOS tube drive circuit is used for driving, so no further details are given.

In the programmable modular power supply (referred to as PSU in this embodiment) secondary transformer design four 1:1 ratio output line package as shown in Figure 2, each output line package output is 12V voltage after rectification and filtering , each rectified and filtered output is connected to the MOS tube and then enters the output terminal of the power supply. When the PSU is initially powered on and in the standby state, it communicates with the system BMC through the PMBUS bus to confirm the system's power supply output requirements for the PSU. When the system requires the PSU to output 12V, the internal DSP of the PSU controls M1/2/3/4 and Q1/2/3 to turn on, and Q4/5/6 to turn off, so that the 4 internal 12V outputs of the PSU are connected in parallel, and the PSU outputs 12V externally to meet the requirements of the system. Power requirements. Each output is equipped with anti-backflow circuit (ORING circuit based on LM5050 chip), overcurrent and overvoltage protection circuit. When each output fails, the LM5050 chip controls the corresponding output isolation MOS tube to turn off to avoid affecting the normal operation of other branches. run. At this time, the external 12V power supply voltage of the PSU is normal, and the output power is reduced. The PSU generates an alarm through the PMBUS communication, the system frequency is reduced, and the power consumption is reduced, thereby avoiding system downtime caused by the reduction of the PSU output power and gaining time for later maintenance. When the system requires the PSU to output 54V, the DPS controls and adjusts the PFM frequency of the transformer to make the 4 shunts output 13.5V voltage, while Q4/5/6 is turned on, and M1/2/3/4 and Q1/2/3 are turned off. The 4 outputs inside the PSU are connected in series to meet the 54V voltage output and supply power for the GPU server system. In this way, the same PSU, according to the control of the internal FW, can meet the power supply requirements of the server system in various scenarios, which greatly improves the versatility of the PSU.

In this application, the PSU is internally divided into 4 power supply modules to output terminals. Each output terminal of the PSU is connected with parallel isolated output MOS transistors and series MOS transistors. The PSU controls the conduction and shutdown of the MOS transistors according to different power supply requirements in the system, so as to realize the parallel connection or series connection of four outputs, so as to meet different output power supply voltage requirements. Each power supply is designed with an overvoltage and undervoltage protection circuit. When 4 circuits are in parallel operation, the output of the isolated MOS tube will be turned off immediately if each circuit fails, without affecting the power supply of the system by other branches, so as to meet the power supply requirements of the system to the greatest extent. When the PSU is initially powered on and in the standby state, it obtains the power supply requirements of the server system through PMBUS communication, controls the internal MOS tube and voltage drive circuit, and matches the system power supply.

The embodiment of the present invention also provides an application method of a programmable modular power supply, where the programmable modular power supply is the programmable modular power supply described in the above embodiment;

When the programmable modular power supply is initially powered on and in the standby state, it communicates with the system BMC through the PMBUS bus to confirm the system's power supply output requirements for the programmable modular power supply;

According to the power supply output requirements, the internal control module of the programmable modular power supply controls the conduction of different MOS tubes and controls the series or parallel connection of multiple output line packs to realize the output of different voltages;

When the output of each output line package fails, the anti-backflow module of this road outputs a control signal to control the isolation MOS tube connected to this road to close, and at the same time, the control module generates an alarm through PMBUS communication.

It should be noted that when the secondary of the transformer includes four output wire packages and the control module includes DSP, the internal control module of the programmable modular power supply controls the conduction of different MOS transistors and controls the series connection of multiple output wire packages according to the power supply output requirements. Or in parallel, the steps to realize the output of different voltages include:

When the system requires the programmable modular power supply to output 12V, the internal DSP of the programmable modular power supply controls the first isolated MOS tube, the second isolated MOS tube, the third isolated MOS tube, the fourth isolated MOS tube, the first MOS switch tube, The second MOS switch tube and the third MOS switch tube are turned on, and the fourth MOS switch tube, the fifth MOS switch tube, and the sixth MOS switch tube are controlled to be turned off, so that the four 12V outputs inside the programmable modular power supply are connected in parallel, and the programmable module The chemical power supply outputs 12V externally to meet the system power supply requirements;

When the system requires the programmable modular power supply to output 54V, the DPS controls and adjusts the PFM frequency of the transformer so that each output line package outputs a voltage of 13.5V, and at the same time controls the fourth MOS switch, the fifth MOS switch, and the sixth MOS switch to conduct turn on, and control the first isolation MOS tube, the second isolation MOS tube, the third isolation MOS tube, the fourth isolation MOS tube, the first MOS switch tube, the second MOS switch tube, and the third MOS switch tube to be turned off. Connect the 4 internal outputs of the programmable modular power supply in series to meet the 54V voltage output and supply power for the GPU server system.

Although the present invention has been described in detail in conjunction with preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those skilled in the art can make various equivalent modifications or replacements to the embodiments of the present invention, and these modifications or replacements should be within the scope of the present invention/any Those skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (7)

1. A programmable modular power supply, characterized in that it comprises a power supply input terminal, a power supply output terminal, a transformer and a control module; The primary of the transformer is connected to the input terminal of the power supply; the secondary of the transformer includes multiple output line packages, and each output line package is connected to the output terminal of the power supply through a MOS tube; Adjacent output wire packages are connected through MOS tubes; The control module is respectively connected to the frequency modulation control terminal of the transformer and the control terminal of the MOS tube, and the control module controls the conduction of different MOS tubes to control the series or parallel connection of multiple output line packages to realize the output of different voltages; The secondary side of the transformer includes N output wire packages, and each output wire package is provided with a first output terminal and a second output terminal; MOS tubes include isolation MOS tubes and MOS switch tubes; The first output end of each output line package is respectively connected to the output end of the power supply through an isolated MOS tube; The power supply also includes an anti-backflow module. The anti-backflow module is connected to the isolated MOS tube. When the anti-backflow module detects an output failure of the output line package, it controls the connected isolation MOS tube to close; The second output ends of the first N-1 output line packages are grounded respectively through MOS switch tubes; the second output ends of the Nth output line package are grounded; Adjacent output wire packages are connected through MOS switch tubes; The control modules are respectively connected to the control terminals of the MOS switch tubes; The anti-backflow module connected to each output line package is connected to the gate of the isolated MOS transistor of this line, and the drain of the isolated MOS transistor connected to each output line package is connected to the first output end of the output line package. The source of the isolated MOS tube connected to the output line is connected to the output terminal of the power supply; The second output end of the first output line pack is connected to the source of the MOS switch tube, the drain of the MOS switch tube is connected to the first output end of the second output line pack, and the gate of the MOS switch tube is connected to Control module; the second output terminal of the second output line package is connected to the source of the next MOS switch tube, connected one by one, and the second output terminal of the N-1th output line package is connected to the source of the MOS switch tube pole, and the drain of the MOS switch tube is connected to the first output terminal of the Nth output line package. 2. The programmable modular power supply according to claim 1, characterized in that the secondary of the transformer includes four output line packages, which are respectively the first output line package, the second output line package, and the third output line package. Line package, the fourth output line package; The MOS switch tube includes a first MOS switch tube, a second MOS switch tube, a third MOS switch tube, a fourth MOS switch tube, a fifth MOS switch tube, and a sixth MOS switch tube; The second output end of the first output line package is connected to the source of the fourth MOS switch tube, the drain of the fourth MOS switch tube is connected to the first output end of the second output line package, and the fourth MOS switch tube The gate is connected to the control module; the second output terminal of the second output line package is connected to the source of the fifth MOS switch tube, and the drain of the fifth MOS switch tube is connected to the first output terminal of the second output line package , the gate of the fifth MOS switch is connected to the control module; the second output terminal of the third output line package is connected to the source of the sixth MOS switch, and the drain of the sixth MOS switch is connected to the fourth output The first output terminal of the wire package and the gate of the sixth MOS switch tube are connected to the control module. 3. The programmable modular power supply according to claim 2, characterized in that the isolation MOS tube also includes a first isolation MOS tube, a second isolation MOS tube, a third isolation MOS tube, and a fourth isolation MOS tube to prevent backflow The modules include a first anti-backflow module, a second anti-backflow module, a third anti-backflow module, and a fourth anti-backflow module; The drain of the first isolation MOS transistor is connected to the first end of the first output line package, the gate of the first isolation MOS transistor is connected to the control output end of the first anti-backflow module, and the input end of the first anti-backflow module is connected to the first end of the first anti-backflow module. The first end of the first output line pack is connected, the output end of the first anti-backflow module is connected to the output end of the power supply; the second end of the first output line pack is connected to the drain of the first MOS switch tube, and the first MOS The source of the switch tube is grounded, and the gate of the first MOS switch tube is connected to the control module; The drain of the second isolation MOS transistor is connected to the first end of the second output line package, the gate of the second isolation MOS transistor is connected to the control output end of the second anti-backflow module, and the input end of the second anti-backflow module is connected to The first end of the second output line package is connected, the output end of the second anti-backflow module is connected to the output end of the power supply; the second end of the second output line package is connected to the drain of the second MOS switch tube, and the second MOS The source of the switch tube is grounded, and the gate of the second MOS switch tube is connected to the control module; The drain of the third isolation MOS transistor is connected to the first end of the third output line package, the gate of the third isolation MOS transistor is connected to the control output end of the third anti-backflow module, and the input end of the third anti-backflow module is connected to The first end of the third output line package is connected, the output end of the third anti-backflow module is connected to the output end of the power supply; the second end of the third output line package is connected to the drain of the third MOS switch tube, and the third MOS The source of the switch tube is grounded, and the gate of the third MOS switch tube is connected to the control module; The drain of the fourth isolation MOS transistor is connected to the first end of the fourth output line package, the gate of the fourth isolation MOS transistor is connected to the control output end of the fourth anti-backflow module, and the input end of the fourth anti-backflow module is connected to the The first end of the fourth output line pack is connected, the output end of the fourth anti-backflow module is connected to the output end of the power supply, and the second end of the fourth output line pack is grounded. 4. The programmable modular power supply according to claim 1, wherein the control module comprises a DSP. 5. The programmable modular power supply according to claim 1, wherein the anti-backflow module includes an LM5050 chip. 6. An application method of a programmable modular power supply, characterized in that the programmable modular power supply is the programmable modular power supply according to any one of claims 3-5; When the programmable modular power supply is initially powered on and in the standby state, it communicates with the system BMC through the PMBUS bus to confirm the system's power supply output requirements for the programmable modular power supply; According to the power supply output requirements, the internal control module of the programmable modular power supply controls the conduction of different MOS tubes and controls the series or parallel connection of multiple output line packs to realize the output of different voltages; When the output of each output line package fails, the anti-backflow module of this road outputs a control signal to control the isolation MOS tube connected to this road to close, and at the same time, the control module generates an alarm through PMBUS communication. 7. The application method of the programmable modular power supply according to claim 6, characterized in that, when the secondary of the transformer includes four output line packages, and the control module includes a DSP, the programmable modular power supply internal The control module controls the conduction of different MOS transistors to control the series or parallel connection of multiple output line packages, and the steps to realize the output of different voltages include: When the system requires the programmable modular power supply to output 12V, the internal DSP of the programmable modular power supply controls the first isolated MOS tube, the second isolated MOS tube, the third isolated MOS tube, the fourth isolated MOS tube, the first MOS switch tube, The second MOS switch tube and the third MOS switch tube are turned on, and the fourth MOS switch tube, the fifth MOS switch tube, and the sixth MOS switch tube are controlled to be turned off, so that the four 12V outputs inside the programmable modular power supply are connected in parallel, and the programmable module The chemical power supply outputs 12V externally to meet the system power supply requirements; When the system requires the programmable modular power supply to output 54V, the DPS controls and adjusts the PFM frequency of the transformer so that each output line package outputs a voltage of 13.5V, and at the same time controls the fourth MOS switch, the fifth MOS switch, and the sixth MOS switch to conduct On, control the first isolation MOS tube, the second isolation MOS tube, the third isolation MOS tube, the fourth isolation MOS tube, the first MOS switch tube, the second MOS switch tube, and the third MOS switch tube to turn off; make the programmable module The internal four outputs of the power supply are connected in series to meet the 54V voltage output and supply power for the GPU server system.