CN105978343A - Multipath output switch power supply and inverter - Google Patents
Multipath output switch power supply and inverter Download PDFInfo
- Publication number
- CN105978343A CN105978343A CN201610395443.4A CN201610395443A CN105978343A CN 105978343 A CN105978343 A CN 105978343A CN 201610395443 A CN201610395443 A CN 201610395443A CN 105978343 A CN105978343 A CN 105978343A
- Authority
- CN
- China
- Prior art keywords
- switch power
- power source
- output switch
- output
- resistance
- 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
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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
- 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
- H02M3/33507—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 with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—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 with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- 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
- H02M3/33561—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 more than one ouput with independent control
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0012—Control circuits using digital or numerical techniques
-
- 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
Abstract
The invention discloses a multipath output switch power supply and an inverter. An auxiliary voltage output terminal of the multipath output switch power supply is connected to a protection circuit in series; the protection circuit comprises a switch device and a resistor; the switch device and the resistor are connected in series; and the multipath output switch power supply also comprises a control circuit which is used for controlling the switch device to switch off before an auxiliary output load of the multipath switch power supply accesses the circuit. The multipath output switch power supply and the inverter overcome the problem of overvoltage damage of the auxiliary output load which is brought by a poor cross regulation rate of the multipath output switch power supply.
Description
Technical field
The present invention relates to electric and electronic technical field, more particularly, it relates to a kind of multiple-channel output switch electricity
Source and inverter.
Background technology
The output voltage of multi-output switch power source is by main output voltage Vout1With auxiliary output voltage Vout2Group
Become.Multi-output switch power source is general only to main output voltage Vout1Using loop pressure-stabilizing, its overall structure is such as
Shown in Fig. 1.
When main output loading F1 increases, the main switch control circuit in main output loop is become by increase
The dutycycle of depressor T1 primary side main switch maintains main output voltage Vout1Constant, to avoid the occurrence of master
Output voltage Vout1Main output loading F1 minimum work electricity is decreased below with the increase of main output loading F1
The situation of pressure.But, due to transformator T1 leakage inductance in multi-output switch power source, leakage inductance coil resistance with
And the existence of the factor such as diode drop, auxiliary output voltage Vout2Can be with transformator T1 primary side master switch
The dutycycle of pipe increases and becomes that very big (normally referred to as, multi-output switch power source intersects this phenomenon
Adjust rate variance), if now switching auxiliary output loading F2, inevitably result in auxiliary output loading F2 two ends
Overtension and damage.
Summary of the invention
In view of this, the present invention provides a kind of multi-output switch power source and inverter, to overcome multichannel defeated
Go out the auxiliary output loading excessive pressure damages problem that Switching Power Supply cross regulation rate difference band comes.
A kind of multi-output switch power source, its boost voltage outfan is parallel with a protection circuit；Described guarantor
Protection circuit includes switching device and resistance, and described switching device and described resistance are in series；
Described multi-output switch power source also includes a control circuit；Described control circuit is used for controlling described
Switching device closes before the auxiliary output loading of described multi-output switch power source accesses circuit.
Alternatively, described control circuit is additionally operable to control described switching device and connects in described auxiliary output loading
Disconnect after entering circuit.
Wherein, described switching device is switching tube.
Wherein, described switching tube is MOSFET, IGBT or audion.
Wherein, described switching device is relay.
Wherein, described resistance is the resistance become by multiple resistance series and parallels.
Wherein, described control circuit is digital signal processor.
A kind of inverter, including any one multi-output switch power source disclosed above.
From above-mentioned technical scheme it can be seen that the present invention is defeated by the auxiliary at multi-output switch power source
Go out to load before F2 accesses circuit and first drag down auxiliary output voltage Vout2, the most again will auxiliary output loading F2
Access circuit；Owing to auxiliary output loading F2 is at auxiliary output voltage Vout2Circuit is just accessed after reduction,
Thus the auxiliary output loading excessive pressure damages avoiding multi-output switch power source cross regulation rate difference band is asked
Topic.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only some embodiments of the present invention, for those of ordinary skill in the art,
On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of multi-output switch power source structural representation disclosed in prior art；
Fig. 2 is a kind of multi-output switch power source structural representation disclosed in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under creative work premise, broadly fall into the scope of protection of the invention.
See Fig. 1, the embodiment of the invention discloses a kind of multi-output switch power source, to overcome multiple-channel output
The auxiliary output loading excessive pressure damages problem that Switching Power Supply cross regulation rate difference band comes.Compared to prior art
Disclosed multi-output switch power source, multi-output switch power source disclosed in the embodiment of the present invention has as follows
Feature:
1) the boost voltage outfan of multi-output switch power source disclosed in the embodiment of the present invention is parallel with a guarantor
Protection circuit, described protection circuit includes switching device K1 and resistance R1, and switching device K1 and resistance
R1 is in series；
2) multi-output switch power source disclosed in the embodiment of the present invention also includes a control circuit (in Fig. 2 not
Illustrate), it is defeated in auxiliary output loading F2 access multichannel that described control circuit is used for controlling switching device K1
Close before going out Switching Power Supply.
The operation principle of multi-output switch power source disclosed in the embodiment of the present invention is as follows:
For ease of describing, first by multi-output switch power source with auxiliary opening of being in series of output loading F2
Close device and be defined as switching device K2；In an initial condition, switching device K2 and switching device K1 writes from memory
Think normally open；
When the main output loading of multi-output switch power source increases, cause auxiliary output voltage Vout2With transformation
When the dutycycle of device T1 primary side main switch increases and becomes the biggest, described control circuit first controls switch
Device K1 closes, and makes resistance R1 access circuit, and resistance R1 can reduce auxiliary output electricity after accessing circuit
Pressure Vout2, its reduction degree is determined by the resistance size of resistance R1, such as can be suitable big by accessing
Little resistance R1 is by auxiliary output voltage Vout2Currency down for auxiliary output loading F2 can bear
Maximum operating voltage；
Afterwards, it is closed again switching device K2, auxiliary output loading F2 is accessed circuit；Owing to auxiliary is defeated
Going out to load F2 is at auxiliary output voltage Vout2Just access circuit after reduction, thus avoid multiple-channel output
The auxiliary output loading excessive pressure damages problem that Switching Power Supply cross regulation rate difference band comes.
Furthermore, it is contemplated that after auxiliary output loading F2 secure accessing circuit, described protection circuit is also just lost
Go effect, if but resistance R1 is connect the most always and the most only can apprentice's increase and lose consume, accordingly, as
Preferably, described control circuit is additionally operable to control switching device K1 after auxiliary output loading F2 accesses circuit
Disconnect.
Wherein, resistance R1 can use an independent resistance；Or, set resistance R1 for convenience
Resistance size, resistance R1 can also be by multiple resistance series and parallels become a resistance.
Wherein, switching device K1 can use switching tube, and the control termination of described switching tube is described controls electricity
The control signal outfan on road, on or off under the control of described control circuit.Described switch
Pipe can be MOSFET (Metal Oxide Semiconductor FET, metal oxide semiconductcor field effect
Answer transistor), can be that (Insulated Gate Bipolar Transistor, insulated gate bipolar is brilliant for IGBT
Body pipe), it is also possible to it is audion.When described switching tube is MOSFET, the grid of described MOSFET
Pole connects the control signal outfan of described control circuit；When described switching tube is IGBT, described IGBT
Grid connect the control signal outfan of described control circuit；When described switching tube is audion, described
The base stage of audion connects the control signal outfan of described control circuit.
Or, switching device K1 can also use relay；The normally opened contact of described relay and resistance
R1 connects, and the coil of described relay connects described control circuit.Described control circuit continues described in being used for controlling
The coil of electrical equipment accesses before circuit electric at auxiliary output loading F2, the coil of described relay obtain electric after,
The normally opened contact of described relay closes automatically, makes resistance R1 access circuit；Described control circuit is additionally operable to
Control coil dead electricity, line of described relay after auxiliary output loading F2 accesses circuit of described relay
After circle dead electricity, the normally opened contact of described relay disconnects automatically, makes resistance R1 to connect in circuit always
Apprentice's increase and lose consumption.
Certainly, the switching device K2 in multi-output switch power source can also use switching tube or relay
Deng, its operation principle repeats no more.
Wherein, the preferred DSP of described control circuit (Digital Signal Processor, digital signal processor),
In addition it is also possible to use single-chip microcomputer or PLC, (Programmable Logic Controller able to programme patrols
Volume controller) etc. other kinds of PLD, do not limit to.
From the foregoing, it will be observed that the embodiment of the present invention is connect by the auxiliary output loading F2 at multi-output switch power source
Auxiliary output voltage V is first dragged down before entering circuitout2, the most again auxiliary output loading F2 is accessed circuit；By
It is at auxiliary output voltage V in auxiliary output loading F2out2Just access circuit after reduction, thus avoid
The auxiliary output loading excessive pressure damages problem that multi-output switch power source cross regulation rate difference band comes.
Additionally, due to a lot of Primary Components are all powered by multi-output switch power source in inverter product,
Therefore, the embodiment of the invention also discloses a kind of inverter, the multiple-channel output used in this inverter switch
Power supply is any one multi-output switch power source disclosed above, to overcome the multiple-channel output in this inverter
The auxiliary output loading excessive pressure damages problem that Switching Power Supply cross regulation rate difference band comes.
Wherein, the control circuit in described multi-output switch power source can be deposited as an independent hardware
It is in described inverter；Or, in order to cost-effective, it is possible to its logic control function is integrated in institute
State in inverter control circuit inherently, increase new control circuit without extra.
In this specification, each embodiment uses the mode gone forward one by one to describe, and each embodiment stresses
Being the difference with other embodiments, between each embodiment, identical similar portion sees mutually.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
Seeing, generic principles defined herein can be in the spirit or scope without departing from the embodiment of the present invention
In the case of, realize in other embodiments.Therefore, the embodiment of the present invention is not intended to be limited to institute herein
These embodiments shown, and it is to fit to consistent with principles disclosed herein and features of novelty the widest
Scope.
Claims (8)
1. a multi-output switch power source, it is characterised in that:
The boost voltage outfan of described multi-output switch power source is parallel with a protection circuit；Described protection
Circuit includes switching device and resistance, and described switching device and described resistance are in series；
Described multi-output switch power source also includes a control circuit；Described control circuit is used for controlling described
Switching device closes before the auxiliary output loading of described multi-output switch power source accesses circuit.
Multi-output switch power source the most according to claim 1, it is characterised in that described control electricity
Road is additionally operable to control described switching device and disconnects after described auxiliary output loading accesses circuit.
Multi-output switch power source the most according to claim 1, it is characterised in that described derailing switch
Part is switching tube.
Multi-output switch power source the most according to claim 3, it is characterised in that described switching tube
For MOSFET, IGBT or audion.
Multi-output switch power source the most according to claim 1, it is characterised in that described derailing switch
Part is relay.
Multi-output switch power source the most according to claim 1, it is characterised in that described resistance is
The resistance become by multiple resistance series and parallels.
Multi-output switch power source the most according to claim 1, it is characterised in that described control electricity
Road is digital signal processor.
8. an inverter, it is characterised in that include that the multichannel according to any one of claim 1-7 is defeated
Go out Switching Power Supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395443.4A CN105978343A (en) | 2016-05-31 | 2016-05-31 | Multipath output switch power supply and inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395443.4A CN105978343A (en) | 2016-05-31 | 2016-05-31 | Multipath output switch power supply and inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105978343A true CN105978343A (en) | 2016-09-28 |
Family
ID=57010351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610395443.4A Pending CN105978343A (en) | 2016-05-31 | 2016-05-31 | Multipath output switch power supply and inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105978343A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376978A (en) * | 2017-01-30 | 2018-08-07 | 通用电气公司 | Auxiliary power circuit and application method |
| CN109149947A (en) * | 2018-09-29 | 2019-01-04 | 北京机械设备研究所 | A kind of multiple-channel output inverse excitation type converter |
| CN111146959A (en) * | 2018-11-06 | 2020-05-12 | 中强光电股份有限公司 | Voltage control circuit and control method thereof |
| CN112234828A (en) * | 2020-09-17 | 2021-01-15 | 浙江大学 | Multi-active-bridge power electronic transformer and soft start method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01318550A (en) * | 1988-06-16 | 1989-12-25 | Oki Electric Ind Co Ltd | Multiple output type switching regulator |
| CN1464628A (en) * | 2002-06-06 | 2003-12-31 | 伊博电源（杭州）有限公司 | Switch power supply no-load control circuit |
| CN1926752A (en) * | 2004-12-08 | 2007-03-07 | 三垦电气株式会社 | Multi-output current-resonant type DC-DC converter |
| CN102377347A (en) * | 2011-10-17 | 2012-03-14 | 广州三晶电气有限公司 | Flyback converter for implementing auxiliary output voltage control by using triode and control method |
| CN102412746A (en) * | 2011-11-30 | 2012-04-11 | 康佳集团股份有限公司 | Flyback switching power supply circuit for improving cross regulation |
-
2016
- 2016-05-31 CN CN201610395443.4A patent/CN105978343A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01318550A (en) * | 1988-06-16 | 1989-12-25 | Oki Electric Ind Co Ltd | Multiple output type switching regulator |
| CN1464628A (en) * | 2002-06-06 | 2003-12-31 | 伊博电源（杭州）有限公司 | Switch power supply no-load control circuit |
| CN1926752A (en) * | 2004-12-08 | 2007-03-07 | 三垦电气株式会社 | Multi-output current-resonant type DC-DC converter |
| CN102377347A (en) * | 2011-10-17 | 2012-03-14 | 广州三晶电气有限公司 | Flyback converter for implementing auxiliary output voltage control by using triode and control method |
| CN102412746A (en) * | 2011-11-30 | 2012-04-11 | 康佳集团股份有限公司 | Flyback switching power supply circuit for improving cross regulation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108376978A (en) * | 2017-01-30 | 2018-08-07 | 通用电气公司 | Auxiliary power circuit and application method |
| CN109149947A (en) * | 2018-09-29 | 2019-01-04 | 北京机械设备研究所 | A kind of multiple-channel output inverse excitation type converter |
| CN111146959A (en) * | 2018-11-06 | 2020-05-12 | 中强光电股份有限公司 | Voltage control circuit and control method thereof |
| CN111146959B (en) * | 2018-11-06 | 2023-08-29 | 中强光电股份有限公司 | Voltage control circuit and control method thereof |
| CN112234828A (en) * | 2020-09-17 | 2021-01-15 | 浙江大学 | Multi-active-bridge power electronic transformer and soft start method thereof |
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Application publication date: 20160928 |