CN106357120A - Switching power supply circuit - Google Patents
Switching power supply circuit Download PDFInfo
- Publication number
- CN106357120A CN106357120A CN201610856129.1A CN201610856129A CN106357120A CN 106357120 A CN106357120 A CN 106357120A CN 201610856129 A CN201610856129 A CN 201610856129A CN 106357120 A CN106357120 A CN 106357120A
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- CN
- China
- Prior art keywords
- switch pipe
- switching power
- power circuit
- outfan
- synchronous rectifier
- 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.)
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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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention discloses a switching power supply. The switching power supply comprises a synchronous rectifier tube, diodes, switching tubes and a transformer, wherein the transformer is provided with a primary winding, a secondary winding and an auxiliary winding; the output end of the synchronous rectifier tube is connected with the dotted terminal of the secondary winding; the other terminal of the secondary winding is grounded through a load; the input end of the synchronous rectifier tube, the dotted terminal of the auxiliary winding, the second end of the first resistor and the output end of the second switching tube are all grounded; the controlled end of the synchronous rectifier tube, the first end of a first resistor and the output end of a first switching tube are connected together; the input end of the first switching tube, the negative electrode of a first diode and the second end of a second resistor are connected together; the first end of the second resistor, the controlled end of the first switching tube and the first end of a third resistor are connected together; the second end of the third resistor is connected with the output end of the second switching tube; the controlled end of the second switching tube is connected with a switch controlled end; the positive electrode of the first diode is connected with the other terminal of the auxiliary winding. The technical scheme has the characteristic of low cost.
Description
Technical field
The present invention relates to switch power technology field, particularly to a kind of switching power circuit.
Background technology
Synchronous rectification is it is simply that adopt the extremely low mosfet (metal-oxide-semiconductor of on state resistance
Field-effect transistor, Metal-Oxide Semiconductor field-effect transistor) replace diode to realize rectification function,
To reduce the technology of rectifier loss.
Existing inverse-excitation type switch power-supply uses the circuit of synchronous rectification as depicted in figs. 1 and 2.Wherein, Fig. 1 is to use
In the circuit of inverse-excitation type electric current continuous operation mode, it to be controlled the synchronous rectification of secondary to control by primary switch controlling signal
Integrated circuit.Fig. 2 is the circuit of inverse-excitation type electric current discontinuous conduction mode, and synchronous rectification controls integrated circuit directly to take mosfet
The voltage signal at two ends, generates the control signal of mosfet.
Above two circuit all realize synchronous rectification using synchronous rectification integral control circuit, relatively costly.
Content of the invention
The main object of the present invention is to provide a kind of switching power circuit it is intended to reduce the cost of this switching power circuit.
For achieving the above object, switching power circuit proposed by the present invention include synchronous rectifier, the first diode, first
Switching tube, second switch pipe, the transformator switching controlled end and there is primary side winding, vice-side winding and assists winding；Described former
The Same Name of Ends of side winding is connected with the positive pole of voltage source, the minus earth of described voltage source, the different name end warp of described primary side winding
Electrical switch is grounded；The outfan of described synchronous rectifier is connected with the Same Name of Ends of described vice-side winding, described vice-side winding
Different name end is connected with the positive drive end of load, the input of described synchronous rectifier, the Same Name of Ends of described assists winding, the first electricity
Second end of resistance, the outfan of described second switch pipe and the negative drive end of described load are all grounded, described synchronous rectifier
The outfan interconnection of controlled end, the first end of described first resistor and described first switch pipe；The input of described first switch pipe
End, the second end interconnection of the negative electrode of described first diode and second resistance, the first end of described second resistance, described first open
Close the controlled end of pipe and the first end interconnection of 3rd resistor, the output of the second end of described 3rd resistor and described second switch pipe
End connect, the controlled end of described second switch pipe with described switch controlled end be connected, the anode of described first diode with described
The different name end of assists winding connects.
Preferably, described switching power circuit also includes the second diode, the 3rd switching tube and the 4th resistance, and the described 3rd
The of the input of switching tube, the negative electrode of described second diode, the controlled end of described synchronous rectifier and described first resistor
One end interconnects, the second end ground connection of the outfan of described 3rd switching tube and described 4th resistance, being subject to of described 3rd switching tube
Control end, the outfan interconnection of the first end, the anode of described second diode and described first switch pipe of described 4th resistance.
Preferably, described 3rd switching tube is pnp audion, and the base stage of described pnp audion is opened for the described 3rd
Close the controlled end of pipe, the input of extremely described 3rd switching tube of transmitting of described pnp audion, described pnp audion
Extremely described 3rd switching tube of current collection outfan.
Preferably, described switching power circuit also includes the 3rd diode, the negative electrode of described 3rd diode, described synchronization
The Same Name of Ends interconnection of the outfan of rectifier tube and described vice-side winding, the plus earth of described 3rd diode.
Preferably, described switching power circuit also includes the 5th resistance, the first end and described second of described 5th resistance
The controlled end of switching tube connects, and the second end of described 5th resistance is connected with described switch controlled end.
Preferably, described switching power circuit also includes the first electric capacity, the first end of described first electric capacity, described secondary around
The different name end of group and the positive drive end interconnection of described load, the second end ground connection of described first electric capacity.
Preferably, described synchronous rectifier is managed for n-mos, and the grid of described n-mos pipe is being subject to of described synchronous rectifier
Control end, the source electrode of described n-mos pipe is the input of described synchronous rectifier, and the drain electrode of described n-mos pipe is that described synchronization is whole
The outfan of flow tube.
Preferably, described first switch pipe is pnp audion, and the base stage of described pnp audion is opened for described first
Close the controlled end of pipe, the input of the extremely described first switch pipe of transmitting of described pnp audion, described pnp audion
The extremely described first switch pipe of current collection outfan.
Preferably, described second switch pipe is npn audion, and the base stage of described npn audion is opened for described second
Close the controlled end of pipe, the input of the extremely described second switch pipe of current collection of described npn audion, described npn audion
The extremely described second switch pipe of transmitting outfan.
Technical solution of the present invention, by being realized the synchronous rectification of switching power circuit using discrete component, is reduced out
Close the cost of power circuit.
Brief description
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 embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is the electrical block diagram of existing switching power circuit one embodiment；
Fig. 2 is the electrical block diagram of another embodiment of existing switching power circuit；
Fig. 3 is the electrical block diagram of switching power circuit one embodiment of the present invention；
Fig. 4 is the electrical block diagram of another embodiment of switching power circuit of the present invention.
Drawing reference numeral illustrates:
| Label | Title | Label | Title | Label | Title |
| vi | Voltage source | r1 | First resistor | q1 | First switch pipe |
| np | Primary side winding | r2 | Second resistance | q2 | Second switch pipe |
| ns | Vice-side winding | r3 | 3rd resistor | q3 | 3rd switching tube |
| vaux | Assists winding | r4 | 4th resistance | d1 | First diode |
| k | Electrical switch | r5 | 5th resistance | d2 | Second diode |
| qs | Synchronous rectifier | rl | Load | d3 | 3rd diode |
| c1 | First electric capacity |
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
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 clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of not making creative work all its
His embodiment, broadly falls into the scope of protection of the invention.
If it is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the embodiment of the present invention,
It is only used for explaining the relative position relation between each part, motion conditions etc. under a certain particular pose (as shown in drawings), such as
When really this particular pose changes, then directionality instruction also correspondingly changes therewith.
In addition, the description being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", "
Two " feature can be expressed or implicitly include at least one this feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must be capable of by those of ordinary skill in the art based on, when the combination of technical scheme occurs
Conflicting or will be understood that the combination of this technical scheme does not exist, also not in the protection model of application claims when cannot realize
Within enclosing.
The present invention proposes a kind of switching power circuit.
With reference to Fig. 3, in one embodiment, this switching power circuit include synchronous rectifier qs, the first diode d1, first
Switching tube q1, second switch pipe q2, switch controlled end p and there is primary side winding np, vice-side winding ns and assists winding naux
Transformator；The Same Name of Ends e of primary side winding np is connected with the positive pole of voltage source vi, the minus earth of voltage source vi, primary side winding np
Different name end f through electrical switch k be grounded；The outfan of synchronous rectifier qs is connected with the Same Name of Ends b of vice-side winding ns, secondary around
The different name end a of group ns is connected with the positive drive end of load rl, the input of synchronous rectifier qs, the Same Name of Ends of assists winding naux
C, the negative drive end at the second end of first resistor r1, the outfan of second switch pipe q2 and load rl are all grounded, synchronous rectifier
The outfan interconnection of the controlled end of qs, the first end of first resistor r1 and first switch pipe q1；The input of first switch pipe q1,
Second end interconnection of the negative electrode of the first diode d1 and second resistance r2, the first end of second resistance r2, first switch pipe q1
The first end interconnection of controlled end and 3rd resistor r3, the second end of 3rd resistor r3 is connected with the outfan of second switch pipe q2,
The controlled end of second switch pipe q2 is connected with switch controlled end p, the anode of the first diode d1 and the different name of assists winding vaux
End d connects.
It should be noted that in the present embodiment, when switch control terminal p receives high level signal, second switch pipe q2
Conducting, first switch pipe q1 is also switched on, and synchronous rectification acts on.When switch control terminal p receives low level signal, second
Switching tube q2 ends, and first switch pipe q1 is also switched off, and synchronous rectification does not act on.
When synchronous rectification acts on, if electrical switch k closure, the Same Name of Ends e potential of primary side winding np compares different name
End f potential is high, and the Same Name of Ends c potential of assists winding naux is higher than different name end d potential.Due to not having voltage to be added to synchronous rectifier
The controlled end of qs, synchronous rectifier qs ends.
If electrical switch k disconnects, the different name end f potential of primary side winding np is higher than Same Name of Ends e potential, vice-side winding ns's
Different name end a potential is higher than Same Name of Ends b potential, and the different name end d potential of assists winding naux is higher than Same Name of Ends c potential.Assists winding
The output voltage of naux is added to the controlled end of synchronous rectifier qs, synchronous rectification by the first diode d1 and first switch pipe q1
Pipe qs opens, and electric current exports from the different name end a of vice-side winding ns, flows to vice-side winding ns's through load rl and synchronous rectifier qs
Same Name of Ends b.
When synchronous rectification does not act on, no matter electrical switch k disconnects or closes, assists winding naux is whole with synchronous
Supply access between flow tube qs controlled end is all cut-off, and synchronous rectifier qs turns off.
It is understood that in the present embodiment, when synchronous rectification acts on, the voltage in assists winding naux and with
Voltage required for step rectifier tube qs conducting is synchronous, and it is added to synchronous whole by the first diode d1 and first switch pipe q1
The controlled end of flow tube qs turns it on；When the voltage reversal in assists winding naux, synchronous rectifier qs turns off.So,
Reach the purpose of synchronous rectification.
Technical solution of the present invention realizes the synchronous rectification of switching power circuit by discrete component, reduces switch
The cost of power circuit.
Preferably, above-mentioned synchronous rectifier qs manages for n-mos, and the grid of n-mos pipe is the controlled end of synchronous rectifier qs,
The source electrode of n-mos pipe is the input of synchronous rectifier qs, and the drain electrode of n-mos pipe is the outfan of synchronous rectifier qs.Above-mentioned
First switch pipe q1 is pnp audion, and the base stage of pnp audion is the controlled end of first switch pipe q1, pnp audion
The transmitting extremely input of first switch pipe q1, the current collection extremely outfan of first switch pipe q1 of pnp audion.Above-mentioned
Second switch pipe q2 is npn audion, and the base stage of npn audion is the controlled end of second switch pipe q2, npn audion
The current collection extremely input of second switch pipe q2, the transmitting extremely outfan of second switch pipe q2 of npn audion.
It is understood that when implementing technical solution of the present invention, first switch pipe q1 can also be that p-mos manages, second
Switching tube q2 can also be that n-mos manages.
Further, with reference to Fig. 4, above-mentioned switching power circuit also includes the second diode d2, the 3rd switching tube q3 and the
Four resistance r4, the input of the 3rd switching tube q3, the negative electrode of the second diode d2, the controlled end of synchronous rectifier qs and the first electricity
The second end ground connection of the first end interconnection of resistance r1, the outfan of the 3rd switching tube q3 and the 4th resistance r4, the 3rd switching tube q3's
Controlled end, the outfan interconnection of the first end of the 4th resistance r4, the anode of the second diode d2 and first switch pipe q1.
It is understood that when synchronous rectification acts on, if the different name end d potential of assists winding naux compares Same Name of Ends
C potential is high, and the output voltage of assists winding naux is added to by the first diode d1, first switch pipe q1 and the second diode d2
The controlled end of synchronous rectifier qs, synchronous rectifier qs opens, and the 3rd switching tube q3 does not act on.If assists winding naux is of the same name
End c potential is higher than different name end d potential, and the 3rd switching tube q3 rapidly switches off synchronous rectifier qs in the presence of the 4th resistance r4,
Strengthen the synchronicity of the voltage in assists winding naux and the voltage required for synchronous rectifier qs conducting.
Preferably, above-mentioned 3rd switching tube q3 is pnp audion, and the base stage of pnp audion is the 3rd switching tube
Controlled end, the input of transmitting the extremely the 3rd switching tube q3 of pnp audion, the current collection the extremely the 3rd of pnp audion is opened
Close the outfan of pipe q3.It is understood that in the present embodiment, the 3rd switching tube q3 can also be that p-mos manages, and does not limit herein
System.
Further, with reference to Fig. 4, above-mentioned switching power circuit also includes the 3rd diode d3, the moon of the 3rd diode d3
The Same Name of Ends b interconnection of pole, the outfan of synchronous rectifier qs and vice-side winding ns, the plus earth of the 3rd diode d3.
If it is understood that the output current of switching power circuit is smaller, using produced by diode rectification
Rectifier loss is also smaller.Therefore, after setting up the 3rd diode d3, when switching power circuit output current is smaller, permissible
Directly adopt the 3rd diode d3 rectification, reduce the cost of switching power circuit further.
It is noted that being the output function improving switching power circuit, in another embodiment, switching power circuit
Also include the 5th resistance r5 and the first electric capacity c1；The first end of the 5th resistance r5 is connected with the controlled end of second switch pipe q2, the
Second end of five resistance r5 is connected with switch controlled end p.The first end of the first electric capacity c1, the different name end a of vice-side winding ns and negative
Carry the positive drive end interconnection of rl, the second end ground connection of the first electric capacity c1.
Hereinafter, the operation principle of switching power circuit of the present invention, in conjunction with Fig. 4, is described.
When synchronous rectification acts on:
If electrical switch k disconnects, the different name end f potential of primary side winding np is higher than Same Name of Ends e potential, vice-side winding ns's
Different name end a potential is higher than Same Name of Ends b potential, and the different name end d potential of assists winding naux is higher than Same Name of Ends c potential.Assists winding
The output voltage of naux is added to being subject to of synchronous rectifier qs by the first diode d1, first switch pipe q1 and the second diode d2
Control end, synchronous rectifier qs opens, and electric current exports from the different name end a of vice-side winding ns, through load rl and synchronous rectifier qs stream
Same Name of Ends b to vice-side winding ns.
If electrical switch k closes, the Same Name of Ends e potential of primary side winding np is higher than different name end f potential, assists winding naux
Same Name of Ends c potential higher than different name end d potential.3rd switching tube q3 rapidly switches off synchronous rectification in the presence of the 4th resistance r4
Pipe qs is so that the voltage in assists winding naux and synchronous rectifier qs turn on required voltage synchronous.
Especially, when switching power circuit output current is smaller, synchronous rectification can be turned off, directly adopt the
Three diode d3 rectifications.
The foregoing is only the preferred embodiments of the present invention, not thereby limit the present invention the scope of the claims, every this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/indirectly use
In the scope of patent protection that other related technical fields are included in the present invention.
Claims (9)
1. a kind of switching power circuit is it is characterised in that including synchronous rectifier, the first diode, first switch pipe, second opening
Guan Guan, the transformator switching controlled end and there is primary side winding, vice-side winding and assists winding；
The Same Name of Ends of described primary side winding is connected with the positive pole of voltage source, the minus earth of described voltage source, described primary side winding
Different name end through electrical switch be grounded；
The outfan of described synchronous rectifier is connected with the Same Name of Ends of described vice-side winding, the different name end of described vice-side winding with negative
The positive drive end carrying connects, the input of described synchronous rectifier, the Same Name of Ends of described assists winding, the second of first resistor
The negative drive end of end, the outfan of described second switch pipe and described load is all grounded, the controlled end of described synchronous rectifier, institute
State the first end of first resistor and the outfan interconnection of described first switch pipe；The input of described first switch pipe, described
Second end interconnection of the negative electrode of one diode and second resistance, the first end of described second resistance, being subject to of described first switch pipe
The first end interconnection of control end and 3rd resistor, the second end of described 3rd resistor is connected with the outfan of described second switch pipe,
The controlled end of described second switch pipe is connected with described switch controlled end, the anode of described first diode and described assists winding
Different name end connect.
2. switching power circuit as claimed in claim 1 is it is characterised in that described switching power circuit also includes the two or two pole
Pipe, the 3rd switching tube and the 4th resistance, the input of described 3rd switching tube, the negative electrode of described second diode, described synchronization
First end interconnection, the outfan of described 3rd switching tube and described 4th resistance of the controlled end of rectifier tube and described first resistor
Second end ground connection, the controlled end of described 3rd switching tube, the first end of described 4th resistance, the anode of described second diode
And the outfan interconnection of described first switch pipe.
3. switching power circuit as claimed in claim 2 it is characterised in that described 3rd switching tube be pnp audion, institute
The base stage stating pnp audion is the controlled end of described 3rd switching tube, the transmitting the extremely described 3rd of described pnp audion
The input of switching tube, the outfan of extremely described 3rd switching tube of current collection of described pnp audion.
4. switching power circuit as claimed in claim 1 is it is characterised in that described switching power circuit also includes the three or two pole
Pipe, the Same Name of Ends interconnection of the negative electrode, the outfan of described synchronous rectifier and described vice-side winding of described 3rd diode, described
The plus earth of the 3rd diode.
5. the switching power circuit as described in claim 1 any one is it is characterised in that described switching power circuit also includes
5th resistance, the first end of described 5th resistance is connected with the controlled end of described second switch pipe, and the second of described 5th resistance
End is connected with described switch controlled end.
6. switching power circuit as claimed in claim 1 is it is characterised in that described switching power circuit also includes the first electricity
Hold, the positive drive end interconnection of the first end of described first electric capacity, the different name end of described vice-side winding and described load, described first
Second end ground connection of electric capacity.
7. the switching power circuit as described in claim 1-6 any one is it is characterised in that described synchronous rectifier is n-
Mos manages, and the grid of described n-mos pipe is the controlled end of described synchronous rectifier, and the source electrode of described n-mos pipe is that described synchronization is whole
The input of flow tube, the drain electrode of described n-mos pipe is the outfan of described synchronous rectifier.
8. the switching power circuit as described in claim 1-6 any one is it is characterised in that described first switch pipe is pnp
Type audion, the base stage of described pnp audion is the controlled end of described first switch pipe, the transmitting of described pnp audion
The input of extremely described first switch pipe, the outfan of the extremely described first switch pipe of current collection of described pnp audion.
9. the switching power circuit as described in claim 1-6 any one is it is characterised in that described second switch pipe is npn
Type audion, the base stage of described npn audion is the controlled end of described second switch pipe, the current collection of described npn audion
The input of extremely described second switch pipe, the outfan of the extremely described second switch pipe of transmitting of described npn audion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856129.1A CN106357120B (en) | 2016-09-27 | 2016-09-27 | Switching power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610856129.1A CN106357120B (en) | 2016-09-27 | 2016-09-27 | Switching power circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106357120A true CN106357120A (en) | 2017-01-25 |
| CN106357120B CN106357120B (en) | 2019-06-21 |
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ID=57865376
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610856129.1A Active CN106357120B (en) | 2016-09-27 | 2016-09-27 | Switching power circuit |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02276306A (en) * | 1989-04-18 | 1990-11-13 | Origin Electric Co Ltd | Driving circuit for voltage driving element |
| CN1564445A (en) * | 2004-03-24 | 2005-01-12 | 伊博电源（杭州）有限公司 | Self-driving circuit of synchronous rectifier tube of reverse excited transformer |
| CN1585249A (en) * | 2004-06-11 | 2005-02-23 | 伊博电源（杭州）有限公司 | Self-driving circuit of antilaser converter synchronous rectifier |
| CN101895281A (en) * | 2010-07-28 | 2010-11-24 | 佛山市顺德区瑞德电子实业有限公司 | Novel MOS tube drive circuit for switch power supply |
-
2016
- 2016-09-27 CN CN201610856129.1A patent/CN106357120B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02276306A (en) * | 1989-04-18 | 1990-11-13 | Origin Electric Co Ltd | Driving circuit for voltage driving element |
| CN1564445A (en) * | 2004-03-24 | 2005-01-12 | 伊博电源（杭州）有限公司 | Self-driving circuit of synchronous rectifier tube of reverse excited transformer |
| CN1585249A (en) * | 2004-06-11 | 2005-02-23 | 伊博电源（杭州）有限公司 | Self-driving circuit of antilaser converter synchronous rectifier |
| CN101895281A (en) * | 2010-07-28 | 2010-11-24 | 佛山市顺德区瑞德电子实业有限公司 | Novel MOS tube drive circuit for switch power supply |
Non-Patent Citations (2)
| Title |
|---|
| 徐德鸿: "《现代电力电子学》", 31 May 2013, 机械工业出版社 * |
| 沈显庆等: "《开关电源原理与设计》", 31 December 2012, 东南大学出版社 * |
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| Publication number | Publication date |
|---|---|
| CN106357120B (en) | 2019-06-21 |
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