CN108155781A - A kind of high efficiency auxiliary battery line - Google Patents
A kind of high efficiency auxiliary battery line Download PDFInfo
- Publication number
- CN108155781A CN108155781A CN201810142615.6A CN201810142615A CN108155781A CN 108155781 A CN108155781 A CN 108155781A CN 201810142615 A CN201810142615 A CN 201810142615A CN 108155781 A CN108155781 A CN 108155781A
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- CN
- China
- Prior art keywords
- power supply
- auxiliary battery
- voltage
- battery line
- switching power
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- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
-
- 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
- H02M1/0006—Arrangements for supplying an adequate voltage to the control circuit of converters
-
- 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
- H02M1/0048—Circuits or arrangements for reducing losses
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of high efficiency auxiliary battery line, the circuit includes input voltage source, Switching Power Supply power stage, outputting inductance, output loading, auxiliary battery line, Switching Power Supply power stage provides voltage output port, export positive voltage port Vout+ connections load, negative voltage port Vout is exported to connect by an outputting inductance and load, Switching Power Supply power stage also provides a VDS voltage port, it is connected with the first resistor of auxiliary battery line, it is characterized in that, after Switching Power Supply steady operation, the circuit is coupled by first inductance and outputting inductance generates the voltage of accessory power supply.The present invention makes switching power circuit enter after steady-working state the voltage for generating accessory power supply by inductive sensor, and design is simple, and loss is small, improves the efficiency of Switching Power Supply, reduces production cost.
Description
Technical field
The present invention relates to field of switch power, more particularly to a kind of high efficiency auxiliary battery line.
Background technology
Switching Power Supply is now widely used in modern power electronic system.Switching Power Supply is mainly opened up by some circuits
Framework is flutterred, input voltage is converted into satisfactory voltage.Basic circuit includes power stage circuit, control circuit, driving
Circuit, protection circuit, auxiliary power supply circuit.With being constantly progressive for science and technology, requirement of the people to Switching Power Supply is also more next
Higher, high density, low cost is high-power, low-voltage, high-current input, low-power consumption, high efficiency, in order to reduce the zero load of power module
Loss, improving the working efficiency of power module just needs to optimize every part circuit of Switching Power Supply, and auxiliary power supply circuit is wherein
An important link.
Accessory power supply common practice is that a winding couples one voltage of generation with main transformer, using three poles
Pipe is depressured to obtain or higher a voltage or pulse voltage is taken in circuit, is depressured to obtain by a triode,
A higher pressure drop is all subject in two ways on triode, generates larger electric current, due to limitation spatially, three poles
Pipe cannot select larger encapsulation, and temperature is high at work for triode, and loss is big, for the control in the type selecting and cost of triode
System all brings difficulty, while also leverage the reduction of power module no-load loss and the raising of efficiency.
To solve the above-mentioned problems, the present invention proposes a kind of efficient auxiliary battery line, when module works normally
Afterwards, it is powered with low-loss inductive sensor, triode is made to be stopped.
Invention content
Technical problem solved by the invention is to provide a kind of high efficiency auxiliary battery line.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of high efficiency auxiliary battery line, the line
Road includes input voltage source, Switching Power Supply power stage, outputting inductance, output loading, auxiliary battery line, above-mentioned input voltage source
It is connected with two input ports of Switching Power Supply power stage, input voltage, Switching Power Supply power is provided to Switching Power Supply power stage
Grade provides two voltage output ports, output positive voltage port Vout+ connection loads, and output negative voltage port Vout- passes through one
A outputting inductance is connected with load, and Switching Power Supply power stage also provides a VDS voltage port, and first with auxiliary battery line
Resistance is connected, which is characterized in that after Switching Power Supply steady operation, which is coupled by first inductance with outputting inductance
Generate the voltage of accessory power supply.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that above-mentioned VDS voltages be a DC voltage or
Person is a pulse voltage, is generated by the power stage circuit of Switching Power Supply.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that above-mentioned auxiliary battery line also includes：First
The other end of resistance is connect with the anode of first diode, and the cathode of the first diode is connected to first capacitance simultaneously
One end, a second resistance one end and first transistor collector, the other end of the first capacitance are connect with load, the
Two resistance other ends are connect with the source electrode of a first switch pipe, and the source electrode of first switch pipe connects a voltage-stabiliser tube simultaneously,
The other end of voltage-stabiliser tube is connected with load ground, and the drain electrode of first switch pipe is connect with the base stage of the first triode.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that above-mentioned auxiliary battery line also includes：First
The grid of switching tube is connected to the anode of third diode and one end of second capacitance simultaneously, and the second capacitance is in addition
One end is connected with load ground, and the cathode of third diode is connected to the cathode and the 4th capacitance of the 4th diode simultaneously
One end, the other end of the 4th capacitance is connected with load ground, and third diode is in parallel with a 3rd resistor, the 4th capacitance
With the 4th resistor coupled in parallel.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that above-mentioned auxiliary battery line also includes：4th
The anode of diode connects the anode and the 5th resistance of second diode, the cathode connection the one or three of the second diode
The emitter of pole pipe and third capacitance, third capacitance other end are connected with load ground, and the other end of the 5th resistance and one the
One inductance connection, the other end of the first inductance are connected with load the earth, and the first inductance is mutually coupled with outputting inductance.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that in order to again after Switching Power Supply is shut down
Rise machine, the grid of first switch pipe needs to discharge after shutdown, the voltage on the second capacitance by 3rd resistor, third diode and
4th conductive discharge.
Preferably, above-mentioned high efficiency auxiliary battery line, which is characterized in that above-mentioned Switching Power Supply power stage is any one
Isolation or non-isolated Switching Power Supply topological structure.
The present invention provides a high efficiency auxiliary battery line simple in structure, at low cost, make switching power circuit into
Enter to be generated after steady-working state the voltage of accessory power supply by inductive sensor, loss is small, improves the efficiency of Switching Power Supply.Make same
The application for walking commutation technique is more extensive, and the performance boost for new and high technology electronic product contributes.
Description of the drawings
Fig. 1 is high efficiency auxiliary battery line schematic diagram.
Fig. 2 is a kind of specific structure diagram of Switching Power Supply power stage.
Specific embodiment
The embodiment of circuit of the present invention is provided below in conjunction with the accompanying drawings, with the technical solution that the present invention will be described in detail.
As shown in fig. 1, input voltage source is connect with Switching Power Supply power stage, is powered to Switching Power Supply power stage, switch
Power grade output voltage anode Vout+ connections load, and negative terminal Vout- connects the negative terminal of load by an outputting inductance L2,
The negativing ending grounding of load.Switching Power Supply power stage can be any one Switching Power Supply topological structure, be flyback frame in Fig. 2
Structure includes input filter circuit, primary side switch pipe, transformer, secondary synchronous rectifier, output filter circuit.VDS be one compared with
High DC voltage either pulse voltage, is generated by Switching Power Supply power stage.Auxiliary battery line includes：One first resistor
R1 one end connects VDS, and the other end connects the anode of a first diode D1, and the cathode of D1 connects the first triode Q2's simultaneously
One end of collector, one end of second resistance R2 and a first capacitance C1, the emitter of Q2 connect the second diode D2's simultaneously
One end of cathode and third capacitance, the collector of Q2 connect the drain electrode of first switch pipe Q1, and the source electrode of Q1 connects other the one of R2 simultaneously
The grid of end and the first voltage-stabiliser tube CR1, Q1 connect the anode of the second capacitance C2,3rd resistor R3 and third diode D3 simultaneously, the
Four resistance R4 and the 4th capacitance and the cathode for coupling the cathode of D3, the other end of R3 and the 4th diode D4, the anode of D4 are same
When connect the anode of D2 and one end of the 5th resistance R5, the other end of R5 connects one end of the first inductance L1, C1, CR1, C2, C3,
The other end of R4, C4, L1 connect the ground of load.
First switch pipe Q1 is the MOSFET of a P type, and CR1 is the voltage-stabiliser tube of a 7.5V, and Switching Power Supply has just started
It during machine, is powered by VDS, VDS voltages are after first resistor R1, the first diode D1, second resistance R2, to switching tube Q1's
Source electrode（S poles）, due to the effect of voltage-stabiliser tube CR1, the source electrode stabilization of Q1 is in 7.5V, at this moment Q1 grids（G feet）Voltage be less than
7.5V, Q1 are open-minded.First triode Q2 is a NPN pipe, and after Q1 conductings, the base stage of triode has electric current, base stage（B poles）Electricity
Pressure is higher than emitter（E poles）Voltage, Q2 conductings, it is a relatively low voltage then to produce accessory power supply VDD, VDD.Due to
VDS voltages are higher, and vdd voltage is relatively low, and larger voltage drop is added on Q2, are lost very big on Q2, and temperature is very high, if always by
VDS powers to VDD, then the type selecting of triode Q2 and the whole efficiency of raising Switching Power Supply are all highly difficult.This circuit solves
This problem, after switch power module, which exports, to be stablized, the first inductance L1 is coupled with outputting inductance L2 generates voltage, the sense of foundation
Voltage is answered by the 5th resistance R5 and the 4th diode D4, establishes voltage on the 4th capacitance C4, the voltage on C4 passes through third
The delay of resistance R3 and the second capacitance C2 are to the G feet of Q1, and when G feet voltage is higher than 7.5V, Q1 is turned off.The base stage of Q2 does not have electric current,
Q2 ends, and such VDS is for electrically disconnected.The voltage that inductive sensor L1 is generated is supplied to VDD by the second diode D2, when switch electricity
In order to play machine again after the shutdown of source, the G feet of Q1 need to discharge after shutdown, and the voltage on C2 passes through 3rd resistor R3, third
Diode D3 and R4 discharge.In this way after power circuit steady operation, accessory power supply VDD is just generated by inductive sensor L1, is dropped significantly
Low loss, provides efficiency.
Although the foregoing describe the specific implementation circuit of the present invention, it will be appreciated by those of skill in the art that these
It is merely illustrative of, under the premise of without departing substantially from the principle and substance of the present invention, a variety of changes can be made to these implementation circuits
More or change.Therefore, protection scope of the present invention is defined by the appended claims.
Claims (7)
1. a kind of high efficiency auxiliary battery line, which includes input voltage source, Switching Power Supply power stage, and outputting inductance is defeated
Go out load, auxiliary battery line, two input ports of above-mentioned input voltage source and Switching Power Supply power stage are connected, and give switch electricity
Source power grade provides input voltage, and Switching Power Supply power stage provides voltage output port, and output positive voltage port Vout+ connections are negative
It carries, output negative voltage port Vout- is connected by an outputting inductance and load, and Switching Power Supply power stage also provides a VDS
Voltage port is connected with the first resistor of auxiliary battery line, which is characterized in that after Switching Power Supply steady operation, which leads to
It crosses first inductance and outputting inductance is coupled and generates the voltage of accessory power supply.
2. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that above-mentioned VDS voltages are one straight
A galvanic electricity pressure either pulse voltage, is generated by the power stage circuit of Switching Power Supply.
3. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that above-mentioned auxiliary battery line also wraps
Contain：The other end of first resistor is connect with the anode of first diode, and the cathode of the first diode is connected to one simultaneously
First capacitance one end, a second resistance one end and first transistor collector, the other end of the first capacitance and load
Ground connects, and second resistance other end is connect with the source electrode of a first switch pipe, and the source electrode of first switch pipe connects one simultaneously
A voltage-stabiliser tube, the other end of voltage-stabiliser tube are connected with load ground, and the drain electrode of first switch pipe is connect with the base stage of the first triode.
4. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that above-mentioned auxiliary battery line also wraps
Contain：The grid of first switch pipe is connected to the anode of third diode and one end of second capacitance, the second electricity simultaneously
The other end of appearance is connected with load ground, the cathode of third diode be connected to simultaneously the 4th diode cathode and one
One end of 4th capacitance, the other end of the 4th capacitance are connected with load ground, and third diode is in parallel with a 3rd resistor,
4th capacitance and the 4th resistor coupled in parallel.
5. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that above-mentioned auxiliary battery line also wraps
Contain：The anode of 4th diode connects the anode and the 5th resistance of second diode, and the cathode of the second diode connects
The emitter of the first triode and third capacitance are connect, third capacitance other end is connected with load ground, the other end of the 5th resistance
With first inductance connection, the other end of the first inductance is connected with load the earth, and the first inductance and outputting inductance are mutual
Coupling.
6. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that after Switching Power Supply is shut down in order to
Machine can be played again, and the grid of first switch pipe needs to discharge after shutdown, and the voltage on the second capacitance passes through 3rd resistor, third
Diode and the 4th conductive discharge.
7. a kind of high efficiency auxiliary battery line as described in claim 1, which is characterized in that above-mentioned Switching Power Supply power stage is
Any one isolation or non-isolated Switching Power Supply topological structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710396498.1A CN107040126A (en) | 2017-05-31 | 2017-05-31 | A kind of high efficiency auxiliary battery line |
| CN2017103964981 | 2017-05-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108155781A true CN108155781A (en) | 2018-06-12 |
| CN108155781B CN108155781B (en) | 2023-07-25 |
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ID=59540219
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710396498.1A Pending CN107040126A (en) | 2017-05-31 | 2017-05-31 | A kind of high efficiency auxiliary battery line |
| CN201810142615.6A Active CN108155781B (en) | 2017-05-31 | 2018-02-11 | High-efficiency auxiliary power supply circuit |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710396498.1A Pending CN107040126A (en) | 2017-05-31 | 2017-05-31 | A kind of high efficiency auxiliary battery line |
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| Country | Link |
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| CN (2) | CN107040126A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771353A (en) * | 2010-02-24 | 2010-07-07 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit for switch power supply |
| CN205142002U (en) * | 2015-09-30 | 2016-04-06 | 广州金升阳科技有限公司 | Switching power supply from supply circuit |
| CN106329968A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Power supply circuit and method of auxiliary power source |
-
2017
- 2017-05-31 CN CN201710396498.1A patent/CN107040126A/en active Pending
-
2018
- 2018-02-11 CN CN201810142615.6A patent/CN108155781B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101771353A (en) * | 2010-02-24 | 2010-07-07 | 英飞特电子（杭州）有限公司 | Auxiliary source circuit for switch power supply |
| CN106329968A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | Power supply circuit and method of auxiliary power source |
| CN205142002U (en) * | 2015-09-30 | 2016-04-06 | 广州金升阳科技有限公司 | Switching power supply from supply circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108155781B (en) | 2023-07-25 |
| CN107040126A (en) | 2017-08-11 |
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Address after: 212000 No.298, daijiamen Road, Zhenjiang high tech Zone, Zhenjiang City, Jiangsu Province Applicant after: JIANGSU ZHAONENG ELECTRONIC CO.,LTD. Address before: No.99, dingmaojing 15th Road, Zhenjiang New District, Zhenjiang City, Jiangsu Province, 212009 Applicant before: JIANGSU ZHAONENG ELECTRONIC CO.,LTD. |
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