CN107834858A - Width funtion inputs the DCDC Switching Power Supplies of two-stage multiple-channel output - Google Patents

Width funtion inputs the DCDC Switching Power Supplies of two-stage multiple-channel output Download PDF

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Publication number
CN107834858A
CN107834858A CN201711085645.XA CN201711085645A CN107834858A CN 107834858 A CN107834858 A CN 107834858A CN 201711085645 A CN201711085645 A CN 201711085645A CN 107834858 A CN107834858 A CN 107834858A
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China
Prior art keywords
circuit
transformer
voltage
control chip
output
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CN201711085645.XA
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Chinese (zh)
Inventor
赵海港
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Dongsheng Hefei Automotive Electronics Co Ltd
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Dongsheng Hefei Automotive Electronics Co Ltd
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Priority to CN201711085645.XA priority Critical patent/CN107834858A/en
Publication of CN107834858A publication Critical patent/CN107834858A/en
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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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • 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
    • H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • 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
    • H02M1/0083—Converters characterised by their input or output configuration
    • H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a kind of DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output, including the primary power source system of interconnection, secondary power supply system；The series topology structure that the primary power source system is formed by designing two groups of transformer primary side windings and two metal-oxide-semiconductors, can Width funtion input 100-800V, or single Width funtion input, or three level input, it disclosure satisfy that the demand of high voltage input system, Voltage Feedback and the switch power supply system of current feedback are realized using a control chip, circuit stability is high, while the insulating power supply of exportable more level is for using；The secondary power supply system forms inverse-excitation type switch power-supply system by multiple identical transformer primary side winding parallels using a metal-oxide-semiconductor and control chip, realizes the output of multichannel identical parameters insulating power supply, and circuit is simple, small volume, cost are low.

Description

Width funtion inputs the DCDC Switching Power Supplies of two-stage multiple-channel output
Technical field
The present invention relates to field of switch power, the DCDC that two-stage multiple-channel output is inputted more particularly to a kind of Width funtion is switched Power supply.
Background technology
Existing Switching Power Supply is mostly single-stage output, is limited by transformer parameter, and the way of single-stage output isolated power supply is few, Or the available insulating power supply of output is few, can not the system of meet demand multipath isolated power use, in the market is sometimes using simultaneously Join multi-channel switch power system to meet the needs of multipath isolated power, thus add the quantity of main transformer, and cost height, Volume is big.
In addition, existing switch power supply system mainly uses single reverse exciting topological structure, input voltage range is narrow, general volume Definite value is in 400V, it is impossible to meets the system of high voltage input, and in the case of other parameters identical, power output is smaller, damage Consume larger.Meanwhile inverse-excitation type switch power-supply is generally controlled using single metal-oxide-semiconductor, if high input voltage, voltage endurance capability is inadequate, just needs Change high-voltage MOS pipe into, and the cost of high-voltage MOS pipe is higher.
Therefore need badly and provide a kind of new Switching Power Supply to solve the above problems.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of DCDC switch electricity of Width funtion input two-stage multiple-channel output Source, can Width funtion input, the output of multichannel identical parameters insulating power supply and the output of more level insulating power supplies.
In order to solve the above technical problems, one aspect of the present invention is：A kind of Width funtion input two-stage is provided The DCDC Switching Power Supplies of multiple-channel output, including the primary power source system of interconnection, secondary power supply system；
The primary power source system mainly includes main circuit, the control circuit being connected with main circuit, power output circuit；The master Circuit includes 400V and inputs between ground between the first reverse excitation circuit formed, 800V inputs and 400V inputs second formed Reverse excitation circuit, the first reverse excitation circuit and the second reverse excitation circuit composition series topology structure, the second reverse excitation circuit include The first transformer primary side winding T1-1, current transformer, the metal-oxide-semiconductor being serially connected, the first reverse excitation circuit include being serially connected The first transformer primary side winding T1-2, metal-oxide-semiconductor, current sampling resistor；The power output circuit is multiple first transformers More level insulating power supply output circuits of vice-side winding composition；
The secondary power supply system mainly includes the second transformer, metal-oxide-semiconductor, the second control chip of multiple identical parameters, multiple The primary side winding of second transformer is in parallel, vice-side winding is multichannel with voltage insulating power supply output end, the drain electrode of metal-oxide-semiconductor with it is multiple The primary side winding series connection of second transformer, grid are connected with the second control chip.
In a preferred embodiment of the present invention, the control circuit includes the first control chip, the first control chip is answered With circuit, Voltage loop；The first control chip application circuit is connected with the first control chip, and the Voltage loop mainly includes pushing away Exempt from circuit, the first current rectifying and wave filtering circuit, driving transformer, the first transformer secondary winding T1-3, the second current rectifying and wave filtering circuit, push away Exempt from circuit, the first current rectifying and wave filtering circuit, driving transformer to be sequentially connected in series, push away the input for exempting from circuit and the first control chip SET pins are connected, and the vice-side winding of driving transformer drives the first reverse excitation circuit, the metal-oxide-semiconductor of the second reverse excitation circuit respectively, Second current rectifying and wave filtering circuit is connected between the first transformer secondary winding T1-3 and the output end of Voltage loop, the output of Voltage loop The VCC pin of end output one voltage feedback signal to the first control chip；The startup voltage of first control chip is derived from The series connection intermediate point of one reverse excitation circuit, the second reverse excitation circuit.
In a preferred embodiment of the present invention, the main circuit also includes the first derided capacitors, the second derided capacitors, will The maximum input voltage of main circuit is pressed, and the first derided capacitors are connected in parallel on the second reverse excitation circuit, the second derided capacitors It is connected in parallel on the first reverse excitation circuit.
In a preferred embodiment of the present invention, the main circuit also includes the first RC absorbing circuits, the 2nd RC absorbs electricity Road, the first transformer primary side is connected in parallel on to impact, the first RC absorbing circuits caused by device for suppressing transformer primary side winding Winding T1-1 both ends, the 2nd RC absorbing circuits are connected in parallel on the first transformer primary side winding T1-2 both ends.
In a preferred embodiment of the present invention, each power output circuit includes the first transformer secondary being sequentially connected in series Winding, the 3rd current rectifying and wave filtering circuit, voltage stabilizing chip, the insulating power supply magnitude of voltage of power output circuit output include 5V, 12V, realize more level insulating power supply outputs.
In a preferred embodiment of the present invention, second transformer is provided with two vice-side windings, each secondary around Group and with being respectively connected with the 4th current rectifying and wave filtering circuit, the vice-side winding of multiple second transformers between voltage insulating power supply output end Realize the output of multichannel same parameter insulating power supply.
In a preferred embodiment of the present invention, the input voltage of second control chip controls for primary power source system The output voltage of circuit, the input voltage of the second transformer primary side winding are the output voltage of primary power source system, control circuit, The output voltage of the control circuit sets frequency and dutycycle in primary power source system.
The beneficial effects of the invention are as follows：
（1）The series connection that primary power source system of the present invention is formed by designing two groups of transformer primary side windings and two metal-oxide-semiconductors Topological structure, can Width funtion input 100-800V, or single Width funtion input, or three level input, disclosure satisfy that high voltage is defeated Enter the demand of system；Voltage Feedback and the switch power supply system of current feedback, circuit stability are realized using a control chip It is high；The insulating power supply of exportable more level is for using simultaneously；
（2）The secondary power supply system is by multiple identical transformer primary side winding parallels, using a metal-oxide-semiconductor and control chip Form inverse-excitation type switch power-supply system, realize the output of multichannel identical parameters insulating power supply, circuit is simple, small volume, into This is low；
（3）Compared to existing market upper switch power-supply system come meet the level of high voltage three input multipath isolated power demand side Case, the single present invention can be achieved high voltage and input, efficiency high, and main transformer quantity is few so that volume of transformer is small, output work Rate is big；
（4）Compared to existing equivalent parameters insulating power supply or DCDC Switching Power Supplies, circuit of the present invention is simple, and cost is low, suitably In wide popularization and application.
Brief description of the drawings
Fig. 1 is the circuit diagram of the preferred embodiment of primary power source system one of the present invention；
Fig. 2 is the circuit diagram of the secondary power supply system.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Fig. 1 and Fig. 2 are referred to, the embodiment of the present invention includes：
A kind of DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output, include primary power source system, the two level of interconnection Power-supply system.
The primary power source system mainly includes main circuit, the control circuit being connected with main circuit, power output circuit.
The series topology structure that the main circuit is the first reverse excitation circuit, the second reverse excitation circuit forms, the second flyback Formula circuit includes the first transformer primary side winding T1-1, current transformer, the metal-oxide-semiconductor being serially connected, the first reverse excitation circuit bag Include the first transformer primary side winding T1-2, metal-oxide-semiconductor, the current sampling resistor being serially connected.The main circuit also includes first point Voltage capacitance C114, the second derided capacitors C77, the first RC absorbing circuits, the 2nd RC absorbing circuits, the first derided capacitors are connected in parallel on On two reverse excitation circuits, the second derided capacitors are connected in parallel on the first reverse excitation circuit, and the first RC absorbing circuits are connected in parallel on the first change Depressor primary side winding T1-1 both ends, the 2nd RC absorbing circuits are connected in parallel on the first transformer primary side winding T1-2 both ends, and RC absorbs electricity Road one is in order to carry out clamper to self induction electromotive force of the transformer primary side winding in current transients, second, for suppressing transformer Primary side winding is to impact caused by device.
The main circuit is provided with two power inputs, a 400V, a 800V, and the first reverse excitation circuit is that 400V is defeated Enter the reverse excitation circuit formed between ground, the second reverse excitation circuit is that 800V inputs between 400V inputs the inverse-excitation type formed Circuit, if connecing 800V inputs, highest input is up to 800V, and input voltage is by the first derided capacitors C114 and the second derided capacitors C77 is pressed, and the voltage of each electric capacity is respectively the half of input voltage, thus the main circuit can Width funtion input 100- 800V, or the input of single Width funtion, or three level（0V、400V、800V）Input, disclosure satisfy that the need of high voltage input system Ask.If input voltage is no more than 400V, input power can be connected on 400V inputs, and operation principle is the same, simply working portion It is C77 loop features in parallel, reduces partition losses, the power output of same whole system also reduces.Its specific electricity Line structure referring to Fig. 1, each circuit element and annexation as shown in the figure.
In the second reverse excitation circuit, 800V input currents become after diode D110 and D4, then by first successively On the one hand depressor primary side winding T1-1, current transformer TR1, metal-oxide-semiconductor Q8, current transformer TR1 are used for overcurrent protection, the opposing party Peak value in face of PWM ripples is synthesized.In the first reverse excitation circuit, 800V input currents pass through diode D6 and D5 successively Afterwards, then by the first transformer primary side winding T1-2, metal-oxide-semiconductor Q53 and the electricity being made up of current sampling resistor R101-R103 Ring is flowed, by the electric current of metal-oxide-semiconductor Q53 source electrodes output and the electric current at current transformer TR1-B both ends through the electric current loop resultant current Feedback signal IPEAK, input into control circuit in the first control chip.Metal-oxide-semiconductor Q8, Q53's opens with shut-off by control electricity Road is controlled.
The control circuit includes the first control chip, the first control chip application circuit, Voltage loop, its physical circuit knot Structure referring to Fig. 1, each circuit element and annexation as shown in the figure.The first control chip U58 uses UC2842, volume Small, powerful, the first control chip application circuit is the peripheral circuit of the first control chip.The Voltage loop is mainly wrapped Include to push away and exempt from circuit, the first current rectifying and wave filtering circuit, driving transformer T12, the first transformer secondary winding T1-3, the second rectifying and wave-filtering Circuit, push away and exempt from circuit, the first current rectifying and wave filtering circuit, driving transformer T12 and be sequentially connected in series, push away the input for exempting from circuit and the first control The SET pins of coremaking piece are connected, and vice-side winding T12-B, T12-C of driving transformer drive the first reverse excitation circuit respectively Metal-oxide-semiconductor Q53, the second reverse excitation circuit metal-oxide-semiconductor Q8, the second current rectifying and wave filtering circuit are connected to the first transformer secondary winding T1-3 Between the output end of Voltage loop, the VCC pin of output end output one voltage feedback signal to the first control chip of Voltage loop.
The startup voltage of first control chip is derived among the series connection of the first reverse excitation circuit, the second reverse excitation circuit Point, when 400V-AUX point sampling voltages rise to 50V, the first control chip U58 just starts, its 6th pin（SET pins）Output PWM ripples, frequency can be set, and realize voltage loop by controlling the dutycycle of output, its signal AUX2-DRV is by pushing away After the rectifying and wave-filtering for exempting from circuit amplification and the first current rectifying and wave filtering circuit, by driving transformer T12, two identicals are exported PWM ripples AUX2-DRV2, AUX2-DRV1 drive Q8 and Q53 respectively, realize that metal-oxide-semiconductor synchronously turns on and off, two such metal-oxide-semiconductor Working condition it is the same, circuit stability is high, and current transformer TR1 and shunt resistance R101 are by processing to the first control chip U58 provides fed-back current signals IPEAK.Transformer secondary winding T1-3 generates voltage VDC- by the second current rectifying and wave filtering circuit AUX, as voltage feedback signal, it is a definite value that this voltage has been set by the first control chip U58, is also served as it The input voltage of second level system.The voltage stabilizing function of the Voltage loop provides for the stable of secondary power supply system input and output voltage Basis.
The power output circuit is more level insulating power supply output circuits of multiple first transformer secondary windings composition. Each power output circuit includes the first transformer secondary winding, the 3rd current rectifying and wave filtering circuit, voltage stabilizing chip being sequentially connected in series, institute Stating the insulating power supply magnitude of voltage of power output circuit output includes 5V, 12V, realizes more level insulating power supply outputs.Its specific electricity Line structure referring to Fig. 1, each circuit element and annexation as shown in the figure.
First transformer secondary winding T1-4 is after the rectifying and wave-filtering of the 3rd current rectifying and wave filtering circuit, then by voltage stabilizing chip U10 output burning voltages 12V；First transformer secondary winding T1-5 after the rectifying and wave-filtering of the 3rd current rectifying and wave filtering circuit, then By voltage stabilizing chip U5 output burning voltages 5V.Preferably, the model 78L05 of the voltage stabilizing chip.
The secondary power supply system mainly includes the second transformer, metal-oxide-semiconductor, the second control chip of multiple identical parameters, The primary side windings of multiple second transformers is in parallel, vice-side winding is multichannel with voltage insulating power supply output end, the drain electrode of metal-oxide-semiconductor with The primary side winding series connection of multiple second transformers, grid are connected with the second control chip.The secondary power supply system is electric by one-level The power vd C-AUX of source system output carries out DC/DC conversion again, and multichannel can be achieved and exported with voltage insulating power supply.Its Particular circuit configurations referring to Fig. 2, each circuit element and annexation as shown in the figure.Transformer T2, T3 of four identical parameters, T4, T5 primary side winding are first in parallel, then connect with metal-oxide-semiconductor Q1 and are grounded again, Q1 output and the 6th of the second control chip U11 Pin（OUTPUT pins）It is connected.The parameter of this transformer of system requirements second must be identical, otherwise can produce circulation, preferable one In embodiment, each second transformer has two-way output, presses insulating power supply defeated so as to which secondary power supply system shares the energization of eight tunnels Go out, meet the needs of multipath isolated power system.The model UC2843 of the second control chip U11, its peripheral circuit are The application circuit of second control chip, its non-design of feedback circuit, thus the PWM ripples exported are fixed frequency and dutycycle, The voltage VDC-AUX exported by primary power source system is determined.In secondary power supply system, the second control chip direct drive MOS Pipe Q1, more multi output can also being expanded on an equal basis, and being controlled simply, component is few, and cost is low.
Circuit of the present invention is simple, and cost is low, compared to meeting the level of high voltage three with existing market upper switch power-supply system The scheme of multipath isolated power demand is inputted, high voltage input, efficiency high, main transformer quantity can be achieved in the single present invention It is few so that volume of transformer is small, output power, is suitable for wide popularization and application.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair The equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills Art field, is included within the scope of the present invention.

Claims (7)

  1. A kind of 1. DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output, it is characterised in that the one-level including interconnection Power-supply system, secondary power supply system；
    The primary power source system mainly includes main circuit, the control circuit being connected with main circuit, power output circuit；The master Circuit includes 400V and inputs between ground between the first reverse excitation circuit formed, 800V inputs and 400V inputs second formed Reverse excitation circuit, the first reverse excitation circuit and the second reverse excitation circuit composition series topology structure, the second reverse excitation circuit include The first transformer primary side winding T1-1, current transformer, the metal-oxide-semiconductor being serially connected, the first reverse excitation circuit include being serially connected The first transformer primary side winding T1-2, metal-oxide-semiconductor, current sampling resistor；The power output circuit is multiple first transformers More level insulating power supply output circuits of vice-side winding composition；
    The secondary power supply system mainly includes the second transformer, metal-oxide-semiconductor, the second control chip of multiple identical parameters, multiple The primary side winding of second transformer is in parallel, vice-side winding is multichannel with voltage insulating power supply output end, the drain electrode of metal-oxide-semiconductor with it is multiple The primary side winding series connection of second transformer, grid are connected with the second control chip.
  2. 2. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that described Control circuit includes the first control chip, the first control chip application circuit, Voltage loop；The first control chip application circuit It is connected with the first control chip, the Voltage loop mainly includes pushing away exempting from circuit, the first current rectifying and wave filtering circuit, driving transformer, the One transformer secondary winding T1-3, the second current rectifying and wave filtering circuit, push away exempt from circuit, the first current rectifying and wave filtering circuit, driving transformer according to Secondary series connection, push away and exempt from the input of circuit and be connected with the SET pins of the first control chip, the vice-side winding of driving transformer drives respectively Dynamic first reverse excitation circuit, the metal-oxide-semiconductor of the second reverse excitation circuit, the second current rectifying and wave filtering circuit be connected to the first transformer secondary around Between group T1-3 and the output end of Voltage loop, output end output one voltage feedback signal to the first control chip of Voltage loop VCC pin；The startup voltage of first control chip is derived among the series connection of the first reverse excitation circuit, the second reverse excitation circuit Point.
  3. 3. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that described Main circuit also includes the first derided capacitors, the second derided capacitors, and the first derided capacitors are connected in parallel on the second reverse excitation circuit, and second Derided capacitors are connected in parallel on the first reverse excitation circuit.
  4. 4. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that described Main circuit also includes the first RC absorbing circuits, the 2nd RC absorbing circuits, and the first RC absorbing circuits are connected in parallel on the first transformer primary side Winding T1-1 both ends, the 2nd RC absorbing circuits are connected in parallel on the first transformer primary side winding T1-2 both ends.
  5. 5. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that each Power output circuit includes the first transformer secondary winding, the 3rd current rectifying and wave filtering circuit, voltage stabilizing chip being sequentially connected in series, the electricity The insulating power supply magnitude of voltage of source follower circuit output includes 5V, 12V.
  6. 6. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that described Second transformer is provided with two vice-side windings, each vice-side winding and with being respectively connected between voltage insulating power supply output end Four current rectifying and wave filtering circuits.
  7. 7. the DCDC Switching Power Supplies of Width funtion input two-stage multiple-channel output according to claim 1, it is characterised in that described The input voltage of second control chip be primary power source system, control circuit output voltage, the second transformer primary side winding it is defeated Enter the output voltage that voltage is primary power source system, control circuit.
CN201711085645.XA 2017-11-07 2017-11-07 Width funtion inputs the DCDC Switching Power Supplies of two-stage multiple-channel output Pending CN107834858A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109586567A (en) * 2018-11-08 2019-04-05 深圳航天科技创新研究院 A kind of topological structure of wide input voltage range multichannel High voltage output
CN111969854A (en) * 2020-07-23 2020-11-20 西安爱科赛博电气股份有限公司 High-voltage flyback switching power supply applied to different input voltage levels

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US20120092905A1 (en) * 2011-09-14 2012-04-19 Srighakollapu Nvs Kumar Method and systems for converting power
CN102611291A (en) * 2012-03-27 2012-07-25 深圳航天科技创新研究院 Input flyback series output-parallel circuit of single control unit
CN103051174A (en) * 2012-12-07 2013-04-17 国网智能电网研究院 High position energy-taking power supply device of submodule of MMC valve and realizing method thereof
CN204145302U (en) * 2014-10-28 2015-02-04 廊坊英博电气有限公司 Multiple transformers parallel connection type Width funtion input DC-DC switching power circuit
CN104601027A (en) * 2015-01-12 2015-05-06 南京亚派科技股份有限公司 Tandem double flyback quasi resonant converter suitable for neutral point clamped direct current bus
CN107294390A (en) * 2017-07-27 2017-10-24 郑州瑞能电源技术有限公司 Two-in-series circuit of reversed excitation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120092905A1 (en) * 2011-09-14 2012-04-19 Srighakollapu Nvs Kumar Method and systems for converting power
CN102611291A (en) * 2012-03-27 2012-07-25 深圳航天科技创新研究院 Input flyback series output-parallel circuit of single control unit
CN103051174A (en) * 2012-12-07 2013-04-17 国网智能电网研究院 High position energy-taking power supply device of submodule of MMC valve and realizing method thereof
CN204145302U (en) * 2014-10-28 2015-02-04 廊坊英博电气有限公司 Multiple transformers parallel connection type Width funtion input DC-DC switching power circuit
CN104601027A (en) * 2015-01-12 2015-05-06 南京亚派科技股份有限公司 Tandem double flyback quasi resonant converter suitable for neutral point clamped direct current bus
CN107294390A (en) * 2017-07-27 2017-10-24 郑州瑞能电源技术有限公司 Two-in-series circuit of reversed excitation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109586567A (en) * 2018-11-08 2019-04-05 深圳航天科技创新研究院 A kind of topological structure of wide input voltage range multichannel High voltage output
CN111969854A (en) * 2020-07-23 2020-11-20 西安爱科赛博电气股份有限公司 High-voltage flyback switching power supply applied to different input voltage levels
CN111969854B (en) * 2020-07-23 2023-03-24 西安爱科赛博电气股份有限公司 High-voltage flyback switching power supply applied to different input voltage levels

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