CN112332641A - Power supply system, power supply method and electronic equipment - Google Patents

Power supply system, power supply method and electronic equipment Download PDF

Info

Publication number
CN112332641A
CN112332641A CN202011185109.9A CN202011185109A CN112332641A CN 112332641 A CN112332641 A CN 112332641A CN 202011185109 A CN202011185109 A CN 202011185109A CN 112332641 A CN112332641 A CN 112332641A
Authority
CN
China
Prior art keywords
power supply
voltage
output
module
supply module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011185109.9A
Other languages
Chinese (zh)
Inventor
郑洲廷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Inspur Intelligent Technology Co Ltd
Original Assignee
Suzhou Inspur Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Inspur Intelligent Technology Co Ltd filed Critical Suzhou Inspur Intelligent Technology Co Ltd
Priority to CN202011185109.9A priority Critical patent/CN112332641A/en
Publication of CN112332641A publication Critical patent/CN112332641A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02M1/10—Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc
    • 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
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal

Abstract

The invention discloses a power supply system, a power supply method and electronic equipment. The system comprises: the power supply module is connected with the commercial power and is configured to convert the commercial power into direct current and output the direct current; one end of the voltage detection module is connected with the power supply module; the input end of the voltage conversion module is connected with the output of the power supply module; and the microcontroller is connected with the other end of the voltage detection module and the voltage conversion module, is configured to receive the target voltage, acquire the output voltage of the power supply module detected by the voltage detection module and control the voltage conversion module to convert the output voltage of the power supply module into the target voltage and then output the target voltage. According to the scheme of the invention, the microcontroller controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage and output the target voltage, so that the output voltage of the power supply module can be detected, the output voltage of the power supply module can be adjusted, and the power supply of the power supply system is more flexible.

Description

Power supply system, power supply method and electronic equipment
Technical Field
The invention relates to the field of power modules, in particular to a power supply system, a power supply method and electronic equipment.
Background
In recent years, a typical application of the whole cabinet toward commercialization is a centralized power Supply type power Supply Rack, for example, in a server power Supply cabinet, a single built-in power Supply module PSU (power Supply unit) mode of a service node is mostly cancelled, and PSUs are centralized together to Supply power to a plurality of nodes in a centralized mode through 12V (Open Rack has added 48V) direct current copper bars.
At present, rack-mounted power supplies are all fixed 12V output or 48V output systems, 12V output necessarily requires 12V PSU, 48V output necessarily requires 48V output PSU, different PSU cannot be mixed, and output voltage is determined only by the rated output of PSU, cannot be adjusted, so that assembly and use of the power supply system are greatly limited.
Disclosure of Invention
In view of the above, it is desirable to provide a power supply system, a power supply method and an electronic device with adjustable voltage.
According to a first aspect of the present invention, there is provided a power supply system, the system comprising:
the power supply module is connected with the mains supply and is configured to convert the mains supply into direct current and output the direct current;
one end of the voltage detection module is connected with the power supply module to detect the output voltage of the power supply module;
the input end of the voltage conversion module is connected with the output of the power supply module;
and the microcontroller is connected with the other end of the voltage detection module and the voltage conversion module, is configured to receive a target voltage, acquire the output voltage of the power supply module detected by the voltage detection module, and controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage and then output the target voltage. In one embodiment, a first preset resistor is disposed in the power supply module, and the voltage detection module includes: a second preset resistor and a preset power supply;
one end of the first preset resistor, which is not grounded, is connected with the second preset resistor, and the other end of the second preset resistor is connected with the preset power supply; the microcontroller acquires the divided voltage of the first preset resistor and determines the output voltage of the power supply module according to the divided voltage of the first preset resistor;
the first preset resistor and the rated output voltage of the power supply module have a preset corresponding relation.
In one embodiment, the power conversion module comprises a voltage conversion circuit and a bypass circuit, and the voltage conversion circuit and the bypass circuit are connected in parallel;
the voltage conversion circuit is configured to convert the input voltage into a target voltage and output the target voltage;
the bypass circuit is configured to directly output an output voltage of the power supply module.
In one embodiment, the microcontroller is configured to: comparing the output voltage of the power supply module with a target voltage; and
if the output voltage of the power supply module is the same as the target voltage, controlling the output of the power supply module to be connected to the bypass circuit;
and if the output voltage of the power supply module is different from the target voltage, controlling the output of the power supply module to be connected to the voltage conversion circuit.
In one embodiment, the number of the power supply modules is multiple, and the power supply modules are connected in parallel, the number of the voltage detection modules and the number of the voltage conversion modules are the same as the number of the power supply modules, the voltage detection modules correspond to the power supply modules one to one, and the voltage conversion modules correspond to the power supply modules one to one.
In one embodiment, the rated output of the plurality of power supply modules includes 48V and/or 12V.
In one embodiment, the target voltage is 48V or 12V.
According to a second aspect of the present invention, there is provided a power supply method using the power supply system described above, the method including:
converting commercial power into direct current by using a power supply module and outputting the direct current;
detecting the output voltage of the power supply module by using the voltage detection module and the microcontroller;
receiving a target voltage by the microcontroller and comparing the target voltage with an output voltage of the power supply module; and
and the microcontroller controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage according to the comparison result and then outputs the target voltage.
In one embodiment, the step of controlling, by the microcontroller according to the comparison result, the voltage conversion module to convert the output voltage of the power supply module into the target voltage and output the target voltage includes:
if the output voltage of the power supply module is the same as the target voltage, the microcontroller gates the output of the power supply module to be connected to a bypass circuit in the voltage conversion module and then outputs the output;
if the output voltage of the power supply module is different from the target voltage, the microcontroller gates the output of the power supply module to be connected to a voltage conversion circuit in the voltage conversion module and then outputs the output, wherein the output voltage of the voltage conversion circuit is the same as the target voltage.
According to a third aspect of the present invention, there is provided an electronic device including the power supply system described above.
According to the power supply system, the mains supply is converted into the direct current through the power supply module and then output, the voltage detection module and the microcontroller are used for detecting the output voltage of the power supply module, meanwhile, the microcontroller is used for receiving the target voltage, the voltage conversion module is controlled by the microcontroller to convert the output voltage of the power supply module into the target voltage and then output the target voltage, the output voltage of the power supply module can be detected, the output voltage of the power supply module can be adjusted, and the power supply of the power supply system is more flexible.
In addition, the invention also provides a power supply method and electronic equipment, which can also realize the technical effects and are not described herein again.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
Fig. 1 is a schematic diagram of a topology of a power supply system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a voltage detection module according to another embodiment of the invention;
fig. 3 is a schematic flow chart of a power supply method according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a supply voltage regulation logic according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
In an embodiment, referring to fig. 1, fig. 1 shows a schematic topology structure diagram of a power supply system, and the present invention provides a power supply system, including:
the power supply module (PSU for short) is connected with the mains supply and is configured to convert the mains supply into direct current and output the direct current;
one end of the voltage detection module is connected with the power supply module to detect the output voltage of the power supply module;
the input end of the voltage conversion module is connected with the output of the power supply module;
and the microcontroller is connected with the other end of the voltage detection module and the voltage conversion module, is configured to receive a target voltage, acquire the output voltage of the power supply module detected by the voltage detection module, and controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage and then output the target voltage. According to the power supply system, the mains supply is converted into the direct current through the power supply module and then output, the voltage detection module and the microcontroller are used for detecting the output voltage of the power supply module, meanwhile, the microcontroller is used for receiving the target voltage, the voltage conversion module is controlled by the microcontroller to convert the output voltage of the power supply module into the target voltage and then output the target voltage, the output voltage of the power supply module can be detected, the output voltage of the power supply module can be adjusted, and the power supply of the power supply system is more flexible.
In another embodiment, referring to fig. 2, fig. 2 shows a schematic diagram of a voltage detection module, a PSU may be 12V or 48V, and in order to obtain an output voltage of a power supply module even when a power supply circuit does not operate, a first preset resistor R1 to ground may be pre-built in PSUs of different specifications, where the first preset resistor has a preset corresponding relationship with a rated output voltage of the power supply module; the voltage detection module comprises: a second preset resistor R2 and a preset power supply VDD; one end of the first preset resistor, which is not grounded, is connected with the second preset resistor, and the other end of the second preset resistor is connected with the preset power supply; the microcontroller acquires the divided voltage of the first preset resistor and determines the output voltage of the power supply module according to the divided voltage of the first preset resistor. Preferably, the target voltage is 48V or 12V.
For example, a PSU with a rated output of 12V can preset a resistance of 1 kilo-ohm, a PSU with a rated output of 48V can preset a resistance of 2 kilo-ohm, wherein the Pd point is the point connected with the microcontroller, and the formula V is usedPd＝VDD×R2/R1+R2VPd＝VDD×R2/R1+R2I.e. the first predetermined resistance can be calculatedPartial pressure VPd。
The power supply system defines the pin position (namely the Pd point) for measuring the PSU output voltage, the actual output of the PSU is not required to be measured, the output voltage of the PSU can be detected even if the PSU does not work, and whether the PSU can be used or not can be judged through the self-defined voltage measuring pin position in the power supply system which can not be mixed and plugged conveniently.
In another embodiment, referring to fig. 1 again, the power conversion module includes a voltage conversion Circuit and a Bypass Circuit, and the voltage conversion Circuit is connected in parallel with the Bypass Circuit (Bypass Circuit);
the voltage conversion circuit is configured to convert the input voltage into a target voltage and output the target voltage; the voltage conversion circuit can be Buck-Boost, Buck, Boost, LLC and other various voltage conversion architecture modules.
The bypass circuit is configured to directly output an output voltage of the power supply module.
In yet another implementation, the microcontroller is configured to: comparing the output voltage of the power supply module with a target voltage; and
if the output voltage of the power supply module is the same as the target voltage, controlling the output of the power supply module to be connected to the bypass circuit;
and if the output voltage of the power supply module is different from the target voltage, controlling the output of the power supply module to be connected to the voltage conversion circuit.
In another embodiment, the number of the power supply modules is multiple, and the power supply modules are connected in parallel, the number of the voltage detection modules and the number of the voltage conversion modules are the same as the number of the power supply modules, the voltage detection modules correspond to the power supply modules one to one, and the voltage conversion modules correspond to the power supply modules one to one.
For example, assuming that six PSUs are connected in parallel, each PSU is connected to the microprocessor through a voltage detection module, and the output terminal of each PSU is connected to a voltage conversion module; for six PSUs; it should be noted that the number of PSUs is only for illustration, and the PSUs can be configured according to the needs of the user and the devices to be powered during the specific implementation process, and should not be construed as limiting the present invention.
Preferably, the rated output of the plurality of power supply modules comprises 48V and/or 12V. As shown in fig. 1, the rated output voltages of each PSU of the system may be the same or different (i.e., mixed insertion), and are specifically set according to the needs of the user; for example, six PSUs are all rated for 12V output, as well as mixed insertion: the six PSUs include three PSUs with a rated output of 12V and three PSUs with a rated output of 48V.
In another embodiment, referring to fig. 3, a method of the present invention includes the following steps:
s100, converting commercial power into direct current by using a power supply module and outputting the direct current;
s200, detecting the output voltage of the power supply module by using the voltage detection module and the microcontroller;
s300, receiving a target voltage by using the microcontroller, and comparing the target voltage with the output voltage of the power supply module; and
and S400, the microcontroller controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage according to the comparison result and then outputs the target voltage.
In another embodiment, the step S400 specifically includes the following sub-steps:
if the output voltage of the power supply module is the same as the target voltage, the microcontroller gates the output of the power supply module to be connected to a bypass circuit in the voltage conversion module and then outputs the output;
if the output voltage of the power supply module is different from the target voltage, the microcontroller gates the output of the power supply module to be connected to a voltage conversion circuit in the voltage conversion module and then outputs the output, wherein the output voltage of the voltage conversion circuit is the same as the target voltage.
In another embodiment, please refer to fig. 4, in order to facilitate understanding of the technical solution of the present invention, a power supply system with a mixed-insertion PSU is taken as an example for explanation, and it is assumed that six PSUs are used in parallel, wherein three PSUs with a rated output of 12V are respectively referred to as PSU1, PSU2 and PSU3, and three PSUs with a rated output of 48V are respectively referred to as PSU4, PSU5 and PSU 6; the target voltage desired by the user is 12V and the target value is signaled to the microcontroller as a command, and the voltage regulation procedure for the above six PSUs is as follows:
step 1, the microcontroller acquires the output voltage of each PSU through respective measuring pin positions (Pd) from the PSU1 to the PSU6, and measures the voltage division value of a grounding resistor R1 inside each PSU by combining a power supply VDD and a resistor R2 outside the PSU, and the power supply VDD is blocked from an external parallel loop due to voltage conversion after being inserted, so that the output working voltage of the PSU can be detected by the microprocessor. In addition, corresponding to a system which cannot be inserted in a mixed mode, the PSU which does not meet the output requirement can be eliminated before the PSU works.
Step 2, the microcontroller receives a target voltage instruction input by a user or pre-stored, and then selects a corresponding conducting circuit for each PSU; assuming that the target voltage is 12V, at this time, the microcontroller determines that the outputs of PSU1, PSU2, and PSU3 require gating of the bypass circuit outputs, and PSU4, PSU5, and PSU6 require gating of the corresponding voltage conversion circuits.
Step 3, outputting each power supply module according to the path selected in the step 2; at this time, the outputs of PSU1, PSU2 and PSU3 are 12V by their corresponding bypass circuits, and the outputs of PSU4, PSU5 and PSU6 are adjusted from 48V to 12V by their corresponding voltage conversion circuits.
Therefore, the power supply system can use 12 and 48VPSU plug-in rack type power supply systems, the PSU which needs to output 12V or 48 is determined to be plugged in the rack type power supply system by detecting the voltage of each PSU, and the PSU which needs to output 12V or 48V is selected to be output, so that power supply mixed plug and output voltage adjustment are realized, and the flexibility of the power supply system is improved.
In another embodiment, the invention further provides an electronic device, which is powered by the power supply system.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. Although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of an embodiment of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.

Claims (10)

1. A power supply system, the system comprising:
the power supply module is connected with the mains supply and is configured to convert the mains supply into direct current and output the direct current;
one end of the voltage detection module is connected with the power supply module to detect the output voltage of the power supply module;
the input end of the voltage conversion module is connected with the output of the power supply module;
and the microcontroller is connected with the other end of the voltage detection module and the voltage conversion module, is configured to receive a target voltage, acquire the output voltage of the power supply module detected by the voltage detection module, and controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage and then output the target voltage.
2. The system of claim 1, wherein a first predetermined resistor is disposed in the power supply module and connected to ground, and the voltage detection module comprises: a second preset resistor and a preset power supply;
one end of the first preset resistor, which is not grounded, is connected with the second preset resistor, and the other end of the second preset resistor is connected with the preset power supply; the microcontroller acquires the divided voltage of the first preset resistor and determines the output voltage of the power supply module according to the divided voltage of the first preset resistor;
the first preset resistor and the rated output voltage of the power supply module have a preset corresponding relation.
3. The system of claim 1, wherein the power conversion module comprises a voltage conversion circuit and a bypass circuit, the voltage conversion circuit and the bypass circuit being connected in parallel;
the voltage conversion circuit is configured to convert the input voltage into a target voltage and output the target voltage;
the bypass circuit is configured to directly output an output voltage of the power supply module.
4. The system of claim 3, wherein the microcontroller is configured to:
comparing the output voltage of the power supply module with a target voltage; and
if the output voltage of the power supply module is the same as the target voltage, controlling the output of the power supply module to be connected to the bypass circuit;
and if the output voltage of the power supply module is different from the target voltage, controlling the output of the power supply module to be connected to the voltage conversion circuit.
5. The power supply system of claim 1, wherein the number of the power supply modules is multiple, and the power supply modules are connected in parallel, the number of the voltage detection modules and the number of the voltage conversion modules are the same as the number of the power supply modules, the voltage detection modules are in one-to-one correspondence with the power supply modules, and the voltage conversion modules are in one-to-one correspondence with the power supply modules.
6. The system of claim 1, wherein the rated output of the plurality of power supply modules comprises 48V and/or 12V.
7. The system of claim 1, wherein the target voltage is 48V or 12V.
8. A method of supplying power using the system of any one of claims 1 to 7, the method comprising:
converting commercial power into direct current by using a power supply module and outputting the direct current;
detecting the output voltage of the power supply module by using the voltage detection module and the microcontroller;
receiving a target voltage by the microcontroller and comparing the target voltage with an output voltage of the power supply module; and
and the microcontroller controls the voltage conversion module to convert the output voltage of the power supply module into the target voltage according to the comparison result and then outputs the target voltage.
9. The method according to claim 8, wherein the step of the microcontroller controlling the voltage conversion module to convert the output voltage of the power supply module into the target voltage and then output the target voltage according to the comparison result comprises:
if the output voltage of the power supply module is the same as the target voltage, the microcontroller gates the output of the power supply module to be connected to a bypass circuit in the voltage conversion module and then outputs the output;
if the output voltage of the power supply module is different from the target voltage, the microcontroller gates the output of the power supply module to be connected to a voltage conversion circuit in the voltage conversion module and then outputs the output, wherein the output voltage of the voltage conversion circuit is the same as the target voltage.
10. An electronic device, characterized in that the electronic device comprises a power supply system according to any one of claims 1-7.
CN202011185109.9A 2020-10-30 2020-10-30 Power supply system, power supply method and electronic equipment Pending CN112332641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011185109.9A CN112332641A (en) 2020-10-30 2020-10-30 Power supply system, power supply method and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011185109.9A CN112332641A (en) 2020-10-30 2020-10-30 Power supply system, power supply method and electronic equipment

Publications (1)

Publication Number Publication Date
CN112332641A true CN112332641A (en) 2021-02-05

Family

ID=74297347

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011185109.9A Pending CN112332641A (en) 2020-10-30 2020-10-30 Power supply system, power supply method and electronic equipment

Country Status (1)

Country Link
CN (1) CN112332641A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101989763A (en) * 2009-08-04 2011-03-23 华为技术有限公司 Power supply backup system and device and communication equipment
CN102082495A (en) * 2009-12-01 2011-06-01 台达电子工业股份有限公司 Power supply unit provided with ac/dc input voltage detection and power supply system incorporating same
CN205123566U (en) * 2015-11-12 2016-03-30 西安特锐德智能充电科技有限公司 Electrical power generating system is thoughtlessly inserted to multivoltage female row altogether
CN207603446U (en) * 2017-10-10 2018-07-10 德尔福中央电气（上海）有限公司 A kind of 200W DC-DC converters
CN207623922U (en) * 2017-11-16 2018-07-17 中国移动通信有限公司研究院 A kind of power supplying system of server
CN108681386A (en) * 2018-04-03 2018-10-19 郑州云海信息技术有限公司 A kind of server redundancy method of supplying power to and its for electric installation
CN108701997A (en) * 2016-02-19 2018-10-23 微软技术许可有限责任公司 Balance the input phase of cross-server rack power supplies
CN108964197A (en) * 2018-08-07 2018-12-07 深圳宝砾微电子有限公司 A kind of charging circuit and power supply device
CN109739330A (en) * 2018-12-28 2019-05-10 郑州云海信息技术有限公司 A kind of system detecting power supply mixed insertion
US20200303924A1 (en) * 2015-11-19 2020-09-24 Sigmagen Inc. Multi-modal maximum power point tracking optimization solar photovoltaic system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101989763A (en) * 2009-08-04 2011-03-23 华为技术有限公司 Power supply backup system and device and communication equipment
CN102082495A (en) * 2009-12-01 2011-06-01 台达电子工业股份有限公司 Power supply unit provided with ac/dc input voltage detection and power supply system incorporating same
CN205123566U (en) * 2015-11-12 2016-03-30 西安特锐德智能充电科技有限公司 Electrical power generating system is thoughtlessly inserted to multivoltage female row altogether
US20200303924A1 (en) * 2015-11-19 2020-09-24 Sigmagen Inc. Multi-modal maximum power point tracking optimization solar photovoltaic system
CN108701997A (en) * 2016-02-19 2018-10-23 微软技术许可有限责任公司 Balance the input phase of cross-server rack power supplies
CN207603446U (en) * 2017-10-10 2018-07-10 德尔福中央电气（上海）有限公司 A kind of 200W DC-DC converters
CN207623922U (en) * 2017-11-16 2018-07-17 中国移动通信有限公司研究院 A kind of power supplying system of server
CN108681386A (en) * 2018-04-03 2018-10-19 郑州云海信息技术有限公司 A kind of server redundancy method of supplying power to and its for electric installation
CN108964197A (en) * 2018-08-07 2018-12-07 深圳宝砾微电子有限公司 A kind of charging circuit and power supply device
CN109739330A (en) * 2018-12-28 2019-05-10 郑州云海信息技术有限公司 A kind of system detecting power supply mixed insertion

Similar Documents

Publication Publication Date Title
US9024473B2 (en) Power combining in power over ethernet systems
US9866016B2 (en) Multiport power converter with load detection capabilities
CN111478777B (en) Power over Ethernet powered device automatically maintains power characteristics
CN110649694B (en) NCSI network card power supply system
US10396560B2 (en) Electric multi-mode power converter module and power system
CN102457384A (en) Power device
CN210724722U (en) Hot plug control circuit
CN113037508B (en) Power-down control circuit and power-down control method
CN112332641A (en) Power supply system, power supply method and electronic equipment
US7345381B2 (en) Converter to provide an output voltage for plural input voltages
Hasanah et al. DC-DC converter for USB-C power adapter in residential DC electricity
CN107196770B (en) System for supplying power through signal wire
CN106571742A (en) Boost converter
CN215268079U (en) Switching power supply parallel power supply system
US20140319915A1 (en) Power adapter with proportional current sharing and mobile electronic device having the same
CN111478584A (en) Novel underwater power supply system
CN114070047A (en) Three-wire DCDC converter and parallel operation power supply system
CN110323938A (en) Power supply voltage following device and computing equipment
CN114421772B (en) Multi-scene compatible power supply distribution device and distribution method
CN113992011B (en) Multi-phase switch converter cascade system and voltage conversion circuit thereof
CN217115088U (en) Portable multi-joint power supply voltage-stabilizing wire
CN220692819U (en) Flyback switching power supply with short-circuit protection and photovoltaic inverter equipment
CN114967891B (en) Voltage bias testing device and method
US10802519B2 (en) Automatic configuration of multiple-phase digital voltage regulator
CN114268215B (en) Parallel current sharing power supply system based on DCR current sampling

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20210205