CN113991973B - Programmable modularized power supply and application method - Google Patents

Programmable modularized power supply and application method Download PDF

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Publication number
CN113991973B
CN113991973B CN202111236122.7A CN202111236122A CN113991973B CN 113991973 B CN113991973 B CN 113991973B CN 202111236122 A CN202111236122 A CN 202111236122A CN 113991973 B CN113991973 B CN 113991973B
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output
mos
output line
switch tube
power supply
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CN113991973A (en
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李兴亮
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Dc-Dc Converters (AREA)

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

Programmable modularized power supply and 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
The power supply input of the server is divided into 12V input and 54V input, the 12V input is mainly used for a conventional server system, and the 12V voltage input by the system is converted into 5V/3.3V equal voltage through a main board VR and is used as internal memory, CPU, hard disk and other components for power supply. The 54V input system is mainly used for a GPU configuration model, and because part of GPUs are directly powered by 54V and have large power consumption, the server system is directly powered by 54V, and 54V voltage is converted into 12V/5V/3.3V by the main board VR to power other non-GPU components.
The power supply PSU of the prior art is generally divided into two output voltage specifications, and PSU with different output specifications are required to be matched for power supply according to different systems. In order to avoid the system burnout caused by abnormal mixed difference of PSUs with different output voltage specifications, two PSUs of 12V/54V are required to meet the structural foolproof requirement and avoid mixed use.
In the prior art, different PSUs are required to be used for supplying power according to different use scenes, so that purchase of PSU materials, warehouse material preparation and production line production are not facilitated. The two materials need to be classified and controlled. Two development systems are needed at the design development end, so that the development cost and the design period are improved.
Disclosure of Invention
Different PSUs are used for supplying power according to different use scenes, so that purchase of PSU materials, warehouse material preparation and production line production are not facilitated. The two materials need to be classified and controlled. The invention relates to a programmable modularized power supply and an application method thereof, which are used for solving the unified requirements of different servers on two power supply output specifications of 12V/54V.
The technical scheme of the invention is as follows:
in one aspect, the technical scheme of the invention provides a programmable modularized power supply, which 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.
Through the design of the invention, the unified requirements of different servers on two power output specifications are effectively solved. 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.
Preferably, the secondary of the transformer comprises N output line packets, each output line packet being provided with a first output terminal and a second output terminal;
the MOS tube comprises an isolation MOS tube and a MOS switch tube;
the first output end of each output line packet is connected to the power supply output end through an isolation MOS tube respectively;
the power supply also comprises a backflow prevention module, wherein the backflow prevention module is connected with the isolation MOS tube, and when the backflow prevention module detects that the output line packet has output faults, the connected isolation MOS tube is controlled to be closed;
the second output ends of the front N-1 output line packets are respectively grounded through MOS switch tubes; the second output end of the Nth output line packet is grounded;
adjacent output line packets are connected through MOS switch tubes;
the control module is respectively connected with the control end of the MOS switch tube.
The input end of the backflow prevention module is connected to the output of the output line package, the output end of the backflow prevention module is connected to the power output end, when the backflow prevention module detects that the voltage difference between the output voltage of the output line package and the voltage of the power output end is not in a set threshold range, the control end of the backflow prevention module outputs a control signal to control the closing of the isolation MOS tube connected with the backflow prevention module in parallel, and when the backflow prevention module is used for multi-channel parallel output, one channel of faults do not affect the output voltage.
Preferably, the anti-backflow module connected with each output line packet is connected with the grid electrode of the isolation MOS tube of the path, the drain electrode of the isolation MOS tube connected with each output line packet is connected to the first output end of the output line packet, and the source electrode of the isolation MOS tube connected with each output line packet is connected to the power output end.
Preferably, the second output end of the first path of output line packet is connected to the source electrode of the MOS switch tube, the drain electrode of the MOS switch tube is connected to the first output end of the second path of output line packet, and the grid electrode of the MOS switch tube is connected to the control module; the second output end of the second output line packet is connected to the source electrode of the next MOS switch tube, the second output end of the N-1 th output line packet is connected to the source electrode of the MOS switch tube, and the drain electrode of the MOS switch tube is connected to the first output end of the N-th output line packet.
When the multi-path output line packets are output in series, a first output end of the Nth path of output line packet is connected to a power output end, a second output end of the first path of output line packet is grounded, and output voltages of the multi-path output line packets are output after being connected in series.
Preferably, the secondary of the transformer comprises four-way output line packets, namely a first-way output line packet, a second-way output line packet, a third-way output line packet and a fourth-way output line packet;
the MOS switch tube comprises 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 path of output line packet is connected to the source electrode of a fourth MOS switch tube, the drain electrode of the fourth MOS switch tube is connected to the first output end of the second path of output line packet, and the grid electrode of the fourth MOS switch tube is connected to the control module; the second output end of the second output line packet is connected to the source electrode of a fifth MOS switch tube, the drain electrode of the fifth MOS switch tube is connected to the first output end of the second output line packet, and the grid electrode of the fifth MOS switch tube is connected to the control module; the second output end of the third path of output line packet is connected to the source electrode of the sixth MOS switch tube, the drain electrode of the sixth MOS switch tube is connected to the first output end of the fourth path of output line packet, and the grid electrode of the sixth MOS switch tube is connected to the control module.
Preferably, the isolation MOS tube further comprises a first isolation MOS tube, a second isolation MOS tube, a third isolation MOS tube and a fourth isolation MOS tube, and the backflow preventing module comprises a first backflow preventing module, a second backflow preventing module, a third backflow preventing module and a fourth backflow preventing module;
the drain electrode of the first isolation MOS tube is connected with the first end of the first path of output line packet, the grid electrode of the first isolation MOS tube is connected to the control output end of the first backflow prevention module, the input end of the first backflow prevention module is connected with the first end of the first path of output line packet, and the output end of the first backflow prevention module is connected with the power supply output end; the second end of the first path of output line packet is connected to the drain electrode of the first MOS switch tube, the source electrode of the first MOS switch tube is grounded, and the grid electrode of the first MOS switch tube is connected to the control module;
the drain electrode of the second isolation MOS tube is connected with the first end of the second path of output line packet, the grid electrode of the second isolation MOS tube is connected to the control output end of the second backflow prevention module, the input end of the second backflow prevention module is connected with the first end of the second path of output line packet, and the output end of the second backflow prevention module is connected with the power supply output end; the second end of the second path of output line packet is connected to the drain electrode of the second MOS switch tube, the source electrode of the second MOS switch tube is grounded, and the grid electrode of the second MOS switch tube is connected to the control module;
the drain electrode of the third isolation MOS tube is connected with the first end of the third path of output line packet, the grid electrode of the third isolation MOS tube is connected to the control output end of the third backflow prevention module, the input end of the third backflow prevention module is connected with the first end of the third path of output line packet, and the output end of the third backflow prevention module is connected with the power supply output end; the second end of the third path of output line packet is connected to the drain electrode of the third MOS switch tube, the source electrode of the third MOS switch tube is grounded, and the grid electrode of the third MOS switch tube is connected to the control module;
the drain electrode of the fourth isolation MOS tube is connected with the first end of the fourth path of output line packet, the grid electrode of the fourth isolation MOS tube is connected to the control output end of the fourth backflow prevention module, the input end of the fourth backflow prevention module is connected with the first end of the fourth path of output line packet, the output end of the fourth backflow prevention module is connected with the power output end, and the second end of the fourth path of output line packet is grounded.
The programmable modularized power supply internally designs 4 independent output line packages (voltage conversion modules), and the control module controls the internal output line packages to run in series or in parallel to meet the output power supply requirement through the PMBUS communication receiving system power supply requirement specification, so that programmable voltage output is realized. And the power multiplexing rate is improved.
Preferably, the control module comprises a DSP.
Preferably, the anti-backflow module comprises an LM5050 chip.
Preferably, each output line packet output enters the power supply output end after being connected with the MOS tube through the rectifying and filtering module.
In a second aspect, the present invention provides an application method of a programmable modular power supply, where the programmable modular power supply is the programmable modular power supply in the first aspect;
when the initial power-on of the programmable modularized power supply is in a standby state, the programmable modularized power supply is communicated with the system BMC through the PMBUS to confirm the power supply output requirement of the system on the programmable modularized power supply;
the programmable modularized power supply internal control module controls the conduction control of different MOS tubes to connect the multi-output line packets in series or in parallel according to the power supply output requirement, so as to realize the output of different voltages;
when each output line packet outputs faults, the backflow prevention module of the line outputs control signals to control the isolation MOS tubes connected with the line to be closed, and meanwhile, the control module generates an alarm through PMBUS communication.
Preferably, when the secondary of the transformer includes four output line packets and the control module includes a DSP, the programmable modularized power supply internal control module controls the serial connection or the parallel connection of the conduction control multiple output line packets of different MOS tubes according to the power supply output requirement, and the step of realizing the output of different voltages includes:
when the system requires the programmable modularized power supply to output 12V, the DSP in the programmable modularized power supply controls 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 conducted, controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be closed, so that 4 paths of 12V output in the programmable modularized power supply are connected in parallel, and the programmable modularized power supply externally outputs 12V to meet the power supply requirement of the system;
when the system requires the programmable modularized power supply to output 54V, DPS controls and adjusts the frequency of the transformer PFM to enable each output line packet to output 13.5V voltage, and simultaneously controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be conducted, and controls 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 closed. 4 paths of outputs in the programmable modularized power supply are connected in series, so that 54V voltage output is met, and the power is supplied to the GPU server system.
From the above technical scheme, the invention has the following advantages: is favorable for purchasing, inventory and unified management and use of production lines. The multiplexing rate of the components is improved, and the quality control of the product is obviously improved. By designing four paths of independent output modules in the PSU, the PSU is enabled to be output in parallel or in series according to the system requirements under the control of an internal program, so that the power supply output requirements of different system application scenes (GPU/universal server) are met. The universality of the PSU is greatly improved, and independent power supply development for GPU configuration is not needed. Meanwhile, the reusability of the components in the PSU is improved, centralized purchasing and unified management are facilitated, and the cost of the components is reduced.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
It can be seen that the present invention has outstanding substantial features and significant advances over the prior art, as well as its practical advantages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic connected block diagram of a programmable modular power supply of one embodiment of the invention.
Fig. 2 is a schematic 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 for 4-way output line packets of one embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the 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 input terminal VIN, a power output terminal OUT, a transformer U1, and a control module U2;
the primary IN of the transformer U1 is connected to the power input VIN; the secondary side of the transformer comprises multiple paths of output line packets 1-N, and each path of output line packet is connected to a power output end OUT through an MOS tube;
adjacent output line packets are connected through MOS tubes;
the control module U2 is respectively connected with the frequency modulation control end of the transformer U1 and the control end of the MOS tube, and the control module controls the conduction control of different MOS tubes to connect the multi-output line packets in series or in parallel so as to realize the output of different voltages.
Through the design of the invention, the unified requirements of different servers on two power output specifications are effectively solved. 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.
In some embodiments, the secondary of the transformer U1 includes N output line packets, each of which is provided with a first output terminal and a second output terminal;
the MOS tube comprises an isolation MOS tube and a MOS switch tube;
the first output end of each output line packet is respectively connected to the power supply output end OUT through an isolation MOS tube;
the power supply also comprises a backflow prevention module, wherein the backflow prevention module is connected with the isolation MOS tube, and when the backflow prevention module detects that the output line packet has output faults, the connected isolation MOS tube is controlled to be closed;
the second output ends of the front N-1 output line packets are respectively grounded through MOS switch tubes; the second output end of the Nth output line packet is grounded;
adjacent output line packets are connected through MOS switch tubes;
the control module U2 is respectively connected with the control ends of the MOS switch tubes.
The input end of the backflow prevention module is connected to the output of the output line package, the output end of the backflow prevention module is connected to the power output end, when the backflow prevention module detects that the voltage difference between the output voltage of the output line package and the voltage of the power output end is not in a set threshold range, the control end of the backflow prevention module outputs a control signal to control the closing of the isolation MOS tube connected with the backflow prevention module in parallel, and when the backflow prevention module is used for multi-channel parallel output, one channel of faults do not affect the output voltage.
In some embodiments, the anti-backflow module connected with each output line packet is connected with the gate of the isolation MOS tube of the path, the drain electrode of the isolation MOS tube connected with each output line packet is connected to the first output end of the path output line packet, and the source electrode of the isolation MOS tube connected with each output line packet is connected to the power output end OUT.
The second output end of the first path of output line packet is connected to the source electrode of the MOS switch tube, the drain electrode of the MOS switch tube is connected to the first output end of the second path of output line packet, and the grid electrode of the MOS switch tube is connected to the control module; the second output end of the second output line packet is connected to the source electrode of the next MOS switch tube, the second output end of the N-1 th output line packet is connected to the source electrode of the MOS switch tube, and the drain electrode of the MOS switch tube is connected to the first output end of the N-th output line packet.
When the multi-path output line packets are output in series, a first output end of the Nth path of output line packet is connected to a power output end, a second output end of the first path of output line packet is grounded, and output voltages of the multi-path output line packets are output after being connected in series.
In some embodiments, as shown in fig. 3, the secondary of the transformer includes four output line packets, namely, a first output line packet 1, a second output line packet 2, a third output line packet 3 and a fourth output line packet 4;
the MOS switching tube comprises a first MOS switching tube Q1, a second MOS switching tube Q2, a third MOS switching tube Q3, a fourth MOS switching tube Q4, a fifth MOS switching tube Q5 and a sixth MOS switching tube Q6;
the second output end of the first path of output line packet 1 is connected to the source electrode of a fourth MOS switch tube Q4, the drain electrode of the fourth MOS switch tube Q4 is connected to the first output end of the second path of output line packet 2, and the grid electrode of the fourth MOS switch tube Q4 is connected to a control module U2; the second output end of the second output line packet 2 is connected to the source electrode of a fifth MOS switch tube Q5, the drain electrode of the fifth MOS switch tube Q5 is connected to the first output end of the second output line packet 2, and the grid electrode of the fifth MOS switch tube Q2 is connected to the control module U2; the second output end of the third path output line packet 3 is connected to the source electrode of a sixth MOS switch tube Q6, the drain electrode of the sixth MOS switch tube Q6 is connected to the first output end of the fourth path output line packet 4, and the grid electrode of the sixth MOS switch tube Q6 is connected to the control module U2.
The isolation MOS tube further comprises a first isolation MOS tube M1, a second isolation MOS tube M2, a third isolation MOS tube M3 and a fourth isolation MOS tube M4, and the backflow prevention module comprises a first backflow prevention module 11, a second backflow prevention module 22, a third backflow prevention module 33 and a fourth backflow prevention module 44;
the drain electrode of the first isolation MOS tube M1 is connected with the first end of the first path of output line packet 1, the grid electrode of the first isolation MOS tube M1 is connected to the control output end of the first backflow prevention module 11, the input end of the first backflow prevention module 11 is connected with the first end of the first path of output line packet 1, and the output end of the first backflow prevention module 11 is connected with the power supply output end OUT; the second end of the first path of output line packet 1 is connected to the drain electrode of the first MOS switch tube Q1, the source electrode of the first MOS switch tube Q1 is grounded, and the grid electrode of the first MOS switch tube Q1 is connected to the control module U2;
the drain electrode of the second isolation MOS tube M2 is connected with the first end of the second output line packet 2, the grid electrode of the second isolation MOS tube M2 is connected to the control output end of the second backflow prevention module 22, the input end of the second backflow prevention module 22 is connected with the first end of the second output line packet 2, and the output end of the second backflow prevention module 22 is connected with the power output end OUT; the second end of the second output line packet 2 is connected to the drain electrode of the second MOS switch tube Q2, the source electrode of the second MOS switch tube Q2 is grounded, and the grid electrode of the second MOS switch tube Q2 is connected to the control module U2;
the drain electrode of the third isolation MOS tube M3 is connected with the first end of the third path of output line packet 3, the grid electrode of the third isolation MOS tube M3 is connected to the control output end of the third backflow prevention module 33, the input end of the third backflow prevention module 33 is connected with the first end of the third path of output line packet 3, and the output end of the third backflow prevention module 33 is connected with the power output end OUT; the second end of the third path of output line packet 3 is connected to the drain electrode of a third MOS switch tube Q3, the source electrode of the third MOS switch tube Q3 is grounded, and the grid electrode of the third MOS switch tube Q3 is connected to a control module U2;
the drain electrode of the fourth isolation MOS tube M4 is connected with the first end of the fourth output line packet 4, the grid electrode of the fourth isolation MOS tube M4 is connected to the control output end of the fourth backflow prevention module 44, the input end of the fourth backflow prevention module 44 is connected with the first end of the fourth output line packet 4, the output end of the fourth backflow prevention module 44 is connected with the power output end OUT, and the second end of the fourth output line packet 4 is grounded.
The programmable modularized power supply internally designs 4 independent output line packages (voltage conversion modules), and the control module controls the internal output line packages to run in series or in parallel to meet the output power supply requirement through the PMBUS communication receiving system power supply requirement specification, so that programmable voltage output is realized. And the power multiplexing rate is improved.
It should be noted that the control module includes a DSP. The anti-backflow module comprises an LM5050 chip. Each output line packet output is connected with the MOS tube through the rectifying and filtering module and then enters the power output end. When the DSP controls the on-off of the MOS tube, the existing MOS tube driving circuit is adopted for driving, and the description is omitted again.
In the programmable modular power supply (called PSU in this embodiment), the secondary transformer is designed with 4 output line packets with 1:1 transformation ratio, as shown in fig. 2, each output line packet outputs 12V voltage after rectification and filtration, and each output after rectification and filtration is connected with an MOS tube and then enters the power supply output end. When PSU is initially powered on and in standby state, the PSU communicates with the system BMC through the PMBUS bus to confirm the power supply output requirement of the system on the PSU. When the system requires the PSU to output 12V, the PSU internal DSP controls the M1/2/3/4 and Q1/2/3 to be conducted, and Q4/5/6 is closed, so that the PSU internal 4 paths of 12V output are connected in parallel, and the PSU external output 12V meets the power supply requirement of the system. And each output is provided with an anti-backflow circuit (ORING circuit formed based on an LM5050 chip), and the LM5050 chip controls the corresponding output isolation MOS tube to be closed when each output fails, so that the normal operation of other branches is prevented from being influenced. At this time, the power supply voltage of the PSU to the external 12V is normal, and the output power is reduced. The PSU generates an alarm through PMBUS communication, the system is down-converted, and the power consumption is reduced, so that the system downtime caused by the reduction of the output power of the PSU is avoided, and the time is gained for later maintenance. When the system requires 54V of PSU output, DPS control adjusts the transformer PFM frequency to 4 shunt outputs 13.5V voltage, while Q4/5/6 is on, M1/2/3/4 and Q1/2/3 is off. The 4 paths of outputs in the PSU are connected in series, so that 54V voltage output is met, and the power is supplied to the GPU server system. Thus, the same PSU can meet the power supply requirements of server systems in various scenes according to the control of the internal FW, and the universality of the PSU is greatly improved.
The PSU in the present application has a partial 4-way power supply module to the output. And each output end of the PSU is connected with the parallel isolation output MOS tube and the series MOS tube, and the PSU controls the on and off of the MOS tube according to different power supply requirements in the system, so that the parallel connection or series connection of four paths of output is realized, and different output power supply voltage requirements are met. And each power supply is designed into an overvoltage and undervoltage protection circuit, when 4 paths of parallel operation is performed, the output of the isolation MOS tube is immediately closed when each path fails, other branches are not influenced to supply power to the system, and the power supply requirement of the system is met to the maximum extent. When PSU is initially powered on and is in standby state, power supply requirements of a server system are acquired through PMBUS communication, an internal MOS tube and a voltage driving circuit are controlled, and power supply of a matching system is achieved.
The embodiment of the invention also provides an application method of the programmable modularized power supply, wherein the programmable modularized power supply is the programmable modularized power supply in the embodiment;
when the initial power-on of the programmable modularized power supply is in a standby state, the programmable modularized power supply is communicated with the system BMC through the PMBUS to confirm the power supply output requirement of the system on the programmable modularized power supply;
the programmable modularized power supply internal control module controls the conduction control of different MOS tubes to connect the multi-output line packets in series or in parallel according to the power supply output requirement, so as to realize the output of different voltages;
when each output line packet outputs faults, the backflow prevention module of the line outputs control signals to control the isolation MOS tubes connected with the line to be closed, and meanwhile, the control module generates an alarm through PMBUS communication.
It should be noted that, when the secondary of the transformer includes four output line packets and the control module includes a DSP, the programmable modularized power supply internal control module controls the serial connection or parallel connection of the conduction control multiple output line packets of different MOS tubes according to the power supply output requirement, and the step of implementing the output of different voltages includes:
when the system requires the programmable modularized power supply to output 12V, the DSP in the programmable modularized power supply controls 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 conducted, controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be closed, so that 4 paths of 12V output in the programmable modularized power supply are connected in parallel, and the programmable modularized power supply externally outputs 12V to meet the power supply requirement of the system;
when the system requires the programmable modularized power supply to output 54V, DPS controls and adjusts the frequency of the transformer PFM to enable each output line packet to output 13.5V voltage, and simultaneously controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be conducted, and controls 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 closed. 4 paths of outputs in the programmable modularized power supply are connected in series, so that 54V voltage output is met, and the power is supplied to the GPU server system.
Although the present invention has been described in detail by way of preferred embodiments with reference to the accompanying drawings, the present invention is not limited thereto. Various equivalent modifications and substitutions may be made in the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and it is intended that all such modifications and substitutions be within the scope of the present invention/be within the scope of the present invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (7)

1. The programmable modularized power supply is characterized by comprising a power input end, a power 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 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 secondary side of the transformer comprises N paths of output line packets, and each path of output line packet is provided with a first output end and a second output end;
the MOS tube comprises an isolation MOS tube and a MOS switch tube;
the first output end of each output line packet is connected to the power supply output end through an isolation MOS tube respectively;
the power supply also comprises a backflow prevention module, wherein the backflow prevention module is connected with the isolation MOS tube, and when the backflow prevention module detects that the output line packet has output faults, the connected isolation MOS tube is controlled to be closed;
the second output ends of the front N-1 output line packets are respectively grounded through MOS switch tubes; the second output end of the Nth output line packet is grounded;
adjacent output line packets are connected through MOS switch tubes;
the control module is respectively connected with the control end of the MOS switch tube;
the anti-backflow module connected with each output line packet is connected with the grid electrode of the isolation MOS tube of the path, the drain electrode of the isolation MOS tube connected with each output line packet is connected to the first output end of the output line packet, and the source electrode of the isolation MOS tube connected with each output line packet is connected to the power supply output end;
the second output end of the first path of output line packet is connected to the source electrode of the MOS switch tube, the drain electrode of the MOS switch tube is connected to the first output end of the second path of output line packet, and the grid electrode of the MOS switch tube is connected to the control module; the second output end of the second output line packet is connected to the source electrode of the next MOS switch tube, the second output end of the N-1 th output line packet is connected to the source electrode of the MOS switch tube, and the drain electrode of the MOS switch tube is connected to the first output end of the N-th output line packet.
2. The programmable modular power supply of claim 1 wherein the secondary of the transformer comprises four output line packets, a first output line packet, a second output line packet, a third output line packet, a fourth output line packet;
the MOS switch tube comprises 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 path of output line packet is connected to the source electrode of a fourth MOS switch tube, the drain electrode of the fourth MOS switch tube is connected to the first output end of the second path of output line packet, and the grid electrode of the fourth MOS switch tube is connected to the control module; the second output end of the second output line packet is connected to the source electrode of a fifth MOS switch tube, the drain electrode of the fifth MOS switch tube is connected to the first output end of the second output line packet, and the grid electrode of the fifth MOS switch tube is connected to the control module; the second output end of the third path of output line packet is connected to the source electrode of the sixth MOS switch tube, the drain electrode of the sixth MOS switch tube is connected to the first output end of the fourth path of output line packet, and the grid electrode of the sixth MOS switch tube is connected to the control module.
3. The programmable modular power supply of claim 2, wherein the isolation MOS transistor further comprises a first isolation MOS transistor, a second isolation MOS transistor, a third isolation MOS transistor, a fourth isolation MOS transistor, and the anti-backflow module comprises a first anti-backflow module, a second anti-backflow module, a third anti-backflow module, and a fourth anti-backflow module;
the drain electrode of the first isolation MOS tube is connected with the first end of the first path of output line packet, the grid electrode of the first isolation MOS tube is connected to the control output end of the first backflow prevention module, the input end of the first backflow prevention module is connected with the first end of the first path of output line packet, and the output end of the first backflow prevention module is connected with the power supply output end; the second end of the first path of output line packet is connected to the drain electrode of the first MOS switch tube, the source electrode of the first MOS switch tube is grounded, and the grid electrode of the first MOS switch tube is connected to the control module;
the drain electrode of the second isolation MOS tube is connected with the first end of the second path of output line packet, the grid electrode of the second isolation MOS tube is connected to the control output end of the second backflow prevention module, the input end of the second backflow prevention module is connected with the first end of the second path of output line packet, and the output end of the second backflow prevention module is connected with the power supply output end; the second end of the second path of output line packet is connected to the drain electrode of the second MOS switch tube, the source electrode of the second MOS switch tube is grounded, and the grid electrode of the second MOS switch tube is connected to the control module;
the drain electrode of the third isolation MOS tube is connected with the first end of the third path of output line packet, the grid electrode of the third isolation MOS tube is connected to the control output end of the third backflow prevention module, the input end of the third backflow prevention module is connected with the first end of the third path of output line packet, and the output end of the third backflow prevention module is connected with the power supply output end; the second end of the third path of output line packet is connected to the drain electrode of the third MOS switch tube, the source electrode of the third MOS switch tube is grounded, and the grid electrode of the third MOS switch tube is connected to the control module;
the drain electrode of the fourth isolation MOS tube is connected with the first end of the fourth path of output line packet, the grid electrode of the fourth isolation MOS tube is connected to the control output end of the fourth backflow prevention module, the input end of the fourth backflow prevention module is connected with the first end of the fourth path of output line packet, the output end of the fourth backflow prevention module is connected with the power output end, and the second end of the fourth path of output line packet is grounded.
4. A programmable modular power supply as claimed in claim 1, wherein the control module comprises a DSP.
5. The programmable modular power supply of claim 1, wherein the anti-backflow module comprises an LM5050 chip.
6. A method of applying a programmable modular power supply according to any one of claims 3-5;
when the initial power-on of the programmable modularized power supply is in a standby state, the programmable modularized power supply is communicated with the system BMC through the PMBUS to confirm the power supply output requirement of the system on the programmable modularized power supply;
the programmable modularized power supply internal control module controls the conduction control of different MOS tubes to connect the multi-output line packets in series or in parallel according to the power supply output requirement, so as to realize the output of different voltages;
when each output line packet outputs faults, the backflow prevention module of the line outputs control signals to control the isolation MOS tubes connected with the line to be closed, and meanwhile, the control module generates an alarm through PMBUS communication.
7. The method of claim 6, wherein when the secondary of the transformer includes four output line packets and the control module includes a DSP, the programmable modular power internal control module controls the series connection or the parallel connection of the conduction control multiple output line packets of different MOS transistors according to the power supply output requirement, and the step of implementing the output of different voltages includes:
when the system requires the programmable modularized power supply to output 12V, the DSP in the programmable modularized power supply controls 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 conducted, controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be closed, so that the four paths of 12V output in the programmable modularized power supply are connected in parallel, and the programmable modularized power supply externally outputs 12V to meet the power supply requirement of the system;
when the system requires the programmable modularized power supply to output 54V, DPS controls and adjusts the frequency of a transformer PFM to enable each output line packet to output 13.5V voltage, and simultaneously controls the fourth MOS switch tube, the fifth MOS switch tube and the sixth MOS switch tube to be conducted, and controls 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 closed; four paths of outputs in the programmable modularized power supply are connected in series, so that 54V voltage output is met, and the power is supplied to the GPU server system.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110676830A (en) * 2019-10-31 2020-01-10 深圳市欧瑞博科技有限公司 Current backflow prevention circuit and intelligent door lock system
CN211429195U (en) * 2020-03-12 2020-09-04 上海澳通韦尔电力电子有限公司 Multi-path isolation output driving power circuit
CN112019058A (en) * 2020-08-14 2020-12-01 苏州浪潮智能科技有限公司 Output self-adaptive server power supply control system and method
CN113471938A (en) * 2021-06-30 2021-10-01 贵州航天林泉电机有限公司 Suspended power supply logic control backflow prevention circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110676830A (en) * 2019-10-31 2020-01-10 深圳市欧瑞博科技有限公司 Current backflow prevention circuit and intelligent door lock system
CN211429195U (en) * 2020-03-12 2020-09-04 上海澳通韦尔电力电子有限公司 Multi-path isolation output driving power circuit
CN112019058A (en) * 2020-08-14 2020-12-01 苏州浪潮智能科技有限公司 Output self-adaptive server power supply control system and method
CN113471938A (en) * 2021-06-30 2021-10-01 贵州航天林泉电机有限公司 Suspended power supply logic control backflow prevention circuit

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