CN109698613A - A kind of driving circuit of driving circuit and full-bridge synchronous rectification - Google Patents
A kind of driving circuit of driving circuit and full-bridge synchronous rectification Download PDFInfo
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- CN109698613A CN109698613A CN201710976069.1A CN201710976069A CN109698613A CN 109698613 A CN109698613 A CN 109698613A CN 201710976069 A CN201710976069 A CN 201710976069A CN 109698613 A CN109698613 A CN 109698613A
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- Prior art keywords
- driving circuit
- driving
- auxiliary winding
- module
- voltage
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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
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
-
- 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
- H02M1/38—Means for preventing simultaneous conduction of switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
Abstract
The present invention provides a kind of driving circuits, including auxiliary winding module and driving circuit module, auxiliary winding module to couple with main winding, obtains driving signal for the voltage by detecting main winding both ends, and be sent to driving circuit module；Driving circuit module is used for after receiving driving signal, drives said driving circuit using driving signal, the speed of driving signal is adjusted with this, and the driving signal after speed regulation is sent to the gate pole of metal-oxide-semiconductor.The present invention also provides a kind of driving circuits of full-bridge synchronous rectification, including above-mentioned driving circuit and integrated chip；Driving circuit is for driving top metal-oxide-semiconductor, and integrated chip is for driving lower part metal-oxide-semiconductor.Driving circuit provided by the invention solves the problems, such as when metal-oxide-semiconductor driving since power supply circuit power floatingly caused by is complicated；The driving circuit of full-bridge synchronous rectification provided by the invention can reliably drive but also achieve the effect that simplify design.
Description
Technical field
The present invention relates to circuit field, in particular to the driving circuit of a kind of driving circuit and full-bridge synchronous rectification.
Background technique
With the development of power supply industry technology, the requirement of electric power source pair of module efficiency is higher and higher, traditional diode rectification
It is all synchronized replaced rectification in many cases.Pressure drop is big when conducting due to body diode conducting, even if in the feelings of low current
The pressure drop of body diode also has 0.5~1V or so under condition；And when the conducting of metal-oxide-semiconductor channel it is in resistance characteristic, pressure drop when flowing through electric current
The generally much smaller than pressure drop of diode, substitution diode can be such that efficiency is obviously improved when being rectified, therefore synchronous rectification skill
Art is essential in the occasion that high efficiency requires.
Synchronous rectification actuation techniques are to be connected using metal-oxide-semiconductor instead of body diode, do not change the operation mode of circuit.In order to
Achieve the effect that synchronous rectification, given again generally after the body diode of metal-oxide-semiconductor flows through electric current and open driving signal, under channel current
To cut-off signals before dropping to zero, electric current reflux or straight-through is prevented.Therefore, the timing of synchronous rectification driving signal is given very
It is important.
The driving methods such as the combination drive that common synchronous rectification driving method has him to drive, driving and the two combine certainly.
It is usually to be driven using integrated analog chip that he, which drives,.Driving signal is directly obtained by integrated chip, or by other signals
It is directly given after processing, the gate pole of synchronous rectifier is given to after power amplification.Auxiliary winding, detection are generally used from driving
Current or voltage signal combines the current loop opened or turned off by other adjunct circuits.Combination drive is usually
He drives and the combination from both drivings, and application can play the role of simplified circuit under special occasions.
In existing driving circuit, since driving power supply is floating ground, outer power supply needs to be isolated or add bootstrapping electricity
Road, power supply is complicated, leads to design complexity, higher cost.
Summary of the invention
It powers floatingly to solve driving circuit needs in the prior art, the problem for causing power supply complicated, the present invention mentions
The driving circuit of a kind of driving circuit and full-bridge synchronous rectification is supplied.
Driving circuit provided by the invention, including auxiliary winding module and driving circuit module, wherein described drive back
It include driving circuit in the module of road；
The auxiliary winding module is coupled with main winding, is driven for the voltage by detecting the main winding both ends
Signal, and it is sent to the driving circuit module；
One end of the driving circuit module is connect with the auxiliary winding module, the gate pole connection of the other end and metal-oxide-semiconductor,
For being powered using the driving signal as voltage for the driving circuit, with this after receiving the driving signal
The speed of the driving signal is adjusted, and the driving signal after speed regulation is sent to the gate pole of the metal-oxide-semiconductor.
Specifically, the driving signal includes turning-on voltage signal and shutdown in driving circuit of the present invention
Voltage signal.
Specifically, the driving circuit module includes two driving circuit lists in driving circuit of the present invention
Member, and each driving circuit unit receives different driving signals in the same time.
Optionally, in driving circuit of the present invention, the speed of the shutdown voltage signal after speed regulation is greater than speed regulation
The speed of turning-on voltage signal afterwards.
Optionally, in driving circuit of the present invention, when the auxiliary winding module only include one auxiliary around
When group, using the pressure difference of the auxiliary winding and the main winding as turning-on voltage signal, using zero level as shutdown voltage letter
Number, wherein the voltage at the auxiliary winding both ends need to be higher than the voltage of the main winding.
Optionally, in driving circuit of the present invention, when the auxiliary winding module includes two auxiliary windings
When, using the induced voltage of auxiliary winding as the driving signal of driving circuit unit corresponding with the auxiliary winding.
It include one or more in following specifically, in driving circuit of the present invention, in the driving circuit
: resistance, diode, triode.
The present invention also provides a kind of driving circuits of full-bridge synchronous rectification, including above-mentioned driving circuit and integrated core
Piece；The driving circuit is for driving top metal-oxide-semiconductor, and the integrated chip is for driving lower part metal-oxide-semiconductor.
Beneficial effects of the present invention are as follows:
The ability that driving circuit provided in an embodiment of the present invention has for driving circuit power supply, provides electricity for driving circuit
Pressure and electric current solve the problems, such as when metal-oxide-semiconductor driving since power supply circuit power floatingly caused by is complicated；The embodiment of the present invention mentions
The combination drive scheme that the driving circuit of the full-bridge synchronous rectification of confession provides, make full use of existing integrated chip driving down tube,
Upper tube is driven from drive scheme with auxiliary winding, can reliably drive but also achievees the effect that simplify design.
Detailed description of the invention
Fig. 1 is the illustraton of model of driving circuit of the embodiment of the present invention；
Fig. 2 is a kind of auxiliary winding form of implementation driven using auxiliary winding and main winding pressure difference；
Fig. 3 is a kind of auxiliary winding form of implementation driven using auxiliary winding autonomous induction voltage；
Fig. 4 is the logic circuit diagram of full-bridge synchronous rectification of embodiment of the present invention combination drive；
Fig. 5 is a kind of logic circuit diagram of the driving circuit embodiment of acceleration upper tube shutdown；
Fig. 6 is a kind of logic circuit diagram for accelerating upper tube shutdown while accelerating the driving circuit embodiment opened；
Fig. 7 is a kind of acceleration upper tube shutdown, accelerates to open while opening patrolling for the adjustable driving circuit embodiment of delay
Collect circuit block diagram.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
It powers floatingly to solve driving circuit needs in the prior art, the problem for causing power supply complicated, the present invention mentions
The driving circuit for having supplied a kind of driving circuit and full-bridge synchronous rectification carries out the present invention below in conjunction with attached drawing further detailed
It describes in detail bright.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, the present invention is not limited.
Fig. 1 is the illustraton of model of driving circuit of the embodiment of the present invention, as shown in Figure 1, self-powered provided in an embodiment of the present invention
Dynamic circuit, including auxiliary winding module M1 and driving circuit module (M2 and M3), wherein including driving in the driving circuit module
Dynamic circuit；
The auxiliary winding module M1 is coupled with main winding, is driven for the voltage by detecting the main winding both ends
Dynamic signal, and it is sent to the driving circuit module (M2 and M3)；
One end of the driving circuit module (M2 and M3) is connect with the auxiliary winding module M1, the other end with it is described
The gate pole (G1 and G2) of metal-oxide-semiconductor connects, for after receiving the driving signal, using the driving signal as voltage source
To power for the driving circuit, the speed of the driving signal is adjusted with this, and the driving signal after speed regulation is sent to
The gate pole of the metal-oxide-semiconductor.
Specifically, the driving signal includes turning-on voltage signal and shutdown in driving circuit of the present invention
Voltage signal.
Specifically, the driving circuit module includes two driving circuit lists in driving circuit of the present invention
Member, and each driving circuit unit receives different driving signals in the same time.
Optionally, in driving circuit of the present invention, the speed of the shutdown voltage signal after speed regulation is greater than speed regulation
The speed of turning-on voltage signal afterwards.
The i.e. described driving circuit includes auxiliary winding module M1, driving circuit module (M2 and M3), the auxiliary winding
Module M1 is the auxiliary winding Ns, Ns and main power winding (alternatively referred to as main winding) coupling of transformer added on main transformer
It closes, on the one hand which plays the function of detecting main power winding both end voltage, which reflects synchronous rectifier
Both ends Vds should have voltage (voltage i.e. between the source electrode and drain electrode of metal-oxide-semiconductor), thus provide the turning-on voltage letter of synchronous rectifier
Number and shutdown voltage signal；On the other hand having is driving circuit power supply capacity, provides supply voltage and electric current for driving circuit,
The power supply circuit as caused by floating ground is complicated when solving the problems, such as independently-powered.
Driving circuit module one end is connected with auxiliary winding, and the other end is connected with the gate pole of metal-oxide-semiconductor, is driving circuit
Current loop is provided.After driving signal detects, by driving circuit module (M2 and M3), driving signal is transported to MOS
The gate pole of pipe.The driving circuit module can be resistance, diode, triode or the specific combination of three, be on the one hand drive
Streaming current provides flow cycle；On the other hand can amplify driving current, can also be used to adjustment synchronous rectifier open or
Person turns off delay.
Optionally, in driving circuit of the present invention, when the auxiliary winding module only include one auxiliary around
When group, using the pressure difference of the auxiliary winding and the main winding as turning-on voltage signal, using zero level as shutdown voltage letter
Number, wherein the voltage at the auxiliary winding both ends need to be higher than the voltage of the main winding.
Fig. 2 is a kind of auxiliary winding form of implementation driven using auxiliary winding and main winding pressure difference, as shown in Fig. 2,
The characteristics of auxiliary winding is single auxiliary winding to be used only two upper tubes, but the both ends auxiliary winding (Ns) induced electricity can be driven
Pressure necessarily is greater than main winding voltage, and the pressure difference between auxiliary winding and main winding drives upper tube, while zero electricity as high level
It is flat to drive another upper tube.In conjunction with Fig. 2, specific drive form are as follows: when auxiliary winding induced voltage is left positive right negative, auxiliary around
Group is put a little by resistance R2 to synchronous rectifier SR2 gate pole, after synchronous rectifier SR2 gate voltage drops to 0, diode D22
Conducting；Meanwhile synchronous rectifier SR1 open signal is given by resistance R1.When auxiliary winding induced voltage be a left side bear right timing, patrol
It is volume identical, it repeats no more.
Optionally, in driving circuit of the present invention, when the auxiliary winding module includes two auxiliary windings
When, using the induced voltage of auxiliary winding as the driving signal of driving circuit unit corresponding with the auxiliary winding.It is exemplary, with
Driving signal of the induced voltage of one of auxiliary winding as the first driving circuit unit, with another auxiliary winding
Driving signal of the induced voltage as the second driving circuit unit.
Fig. 3 is a kind of auxiliary winding form of implementation driven using auxiliary winding autonomous induction voltage, as shown in figure 3,
The auxiliary winding module uses two independent auxiliary windings, two upper tubes is respectively driven, in the more feelings of vice-side winding the number of turns
The effect for reducing driving umber of turn can be played under condition.Specifically: when main winding voltage is left positive right negative, auxiliary winding
Ns1 voltage is upper just lower negative, to synchronous rectifier SR1 open signal；Meanwhile auxiliary winding NS2 voltage be it is upper it is negative under just, to same
Walk rectifying tube SR2 cut-off signals.Drive logic identical when negative half period.
The embodiment of the invention also provides a kind of driving circuit of full-bridge synchronous rectification, including above-mentioned driving circuit and
Integrated chip；The driving circuit is for driving top metal-oxide-semiconductor, and the integrated chip is for driving lower part metal-oxide-semiconductor.The present invention
The combination drive scheme that the driving circuit for the full-bridge synchronous rectification that embodiment provides provides makes full use of existing integrated chip to drive
Dynamic down tube drives upper tube from drive scheme with auxiliary winding, can reliably drive the effect in turn simplifying design.
Fig. 4 is the logic circuit diagram of full-bridge synchronous rectification of embodiment of the present invention combination drive, as shown in figure 4, on full-bridge
Tube drive circuit uses novel auxiliary winding driving circuit, and down tube is driven using integrated SR driving IC.Due to full-bridge
Two down tubes of rectification altogether, can be using the driving chip of two-way output, it is ensured that reliable driving, and design simple；Upper tube
Using auxiliary winding from drive scheme, circuit structure is simple, and is not necessarily to external power supply.It is all used different from full-bridge synchronous rectification
Auxiliary winding or driving transformer driving are all driven using integrated IC also different from full-bridge synchronous rectification, the former designs multiple
Miscellaneous reliability is lower, the latter's high reliablity but needs bootstrapping power supply.The combination drive scheme mentioned both ensure that higher driving
Reliability, and simplify the driving circuit of upper tube.
Fig. 5~Fig. 7 is the auxiliary winding form of implementation shown in Fig. 2 driven using auxiliary winding and main winding pressure difference
It is further improved circuit, to achieve the effect that better regulating switch speed.It is clear that Fig. 5~improvement shown in Fig. 7 electricity
Road is equally applicable in the auxiliary winding form of implementation shown in Fig. 3 driven using auxiliary winding autonomous induction voltage.
It is a kind of driving circuit embodiment of acceleration upper tube shutdown such as Fig. 5.Auxiliary winding (Ns) induced voltage is higher than main electricity
Road winding voltage, when auxiliary winding induced voltage is left positive right negative, auxiliary winding turned off rapidly by diode D21 synchronize it is whole
Flow tube SR2；Diode D22 is connected after SR2 gate signal drops to 0, while opening letter to SR1 application through driving resistance R1
Number.When auxiliary winding induced voltage is that right timing is born on a left side, logic is identical, repeats no more.Driving resistance R1, R2 are reasonably selected, is protected
It is open-minded with respect to pipe earlier than another to demonstrate,prove a SR shutdown.
Such as Fig. 6, the driving circuit embodiment turned off for another acceleration upper tube.Auxiliary winding (Ns) induced voltage is higher than master
Circuit winding voltage, when auxiliary winding induced voltage is left positive right negative, diode D22 conducting, auxiliary winding by resistance R2,
Triode K2 turns off rapidly synchronous rectifier SR2, while it is open-minded to SR1 application to be driven diode D11, driving resistance R1 to start
Signal.When auxiliary winding induced voltage is that right timing is born on a left side, logic is identical, repeats no more.
Such as Fig. 7, for a kind of acceleration upper tube shutdown and adjustable upper tube opens the driving circuit embodiment of delay, to ensure two
Cut-off signals prevent straight-through situation earlier than open signal when a upper tube drive actions.Auxiliary winding (Ns) induced voltage is high
In main circuit winding voltage, when auxiliary winding induced voltage is left positive right negative, diode D22 conducting, auxiliary winding is by electricity
Resistance R2, triode K2 turn off rapidly synchronous rectifier SR2；Simultaneously through driving diode D11, driving resistance R11, R12 start to
SR1 applies open signal, and by adjusting resistance R12, adjustable SR1's opens delay, after can reliably guaranteeing SR2 shutdown
SR1 is open-minded again, prevents straight-through situation.When auxiliary winding induced voltage is that right timing is born on a left side, logic is identical, repeats no more.
To sum up, the driving circuit of driving circuit and full-bridge synchronous rectification provided by the invention, compared with prior art,
The upper tube driving circuit mentioned solves upper tube and floats challenge of powering caused by ground, relative to existing driving circuit
It is simplified；The combination drive scheme mentioned makes full use of existing commercial chip driving down tube, with auxiliary winding from the side of driving
Case drives upper tube, achievees the effect that reliably to drive and in turn simplifies design.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (8)
1. a kind of driving circuit, which is characterized in that including auxiliary winding module and driving circuit module, wherein described drive back
It include driving circuit in the module of road；
The auxiliary winding module is coupled with main winding, obtains driving letter for the voltage by detecting the main winding both ends
Number, and it is sent to the driving circuit module；
One end of the driving circuit module is connect with the auxiliary winding module, and the gate pole connection of the other end and metal-oxide-semiconductor is used for
After receiving the driving signal, for driving circuit power supply, adjusted using the driving signal as voltage with this
The speed of the whole driving signal, and the driving signal after speed regulation is sent to the gate pole of the metal-oxide-semiconductor.
2. driving circuit as described in claim 1, which is characterized in that the driving signal includes turning-on voltage signal and pass
Disconnected voltage signal.
3. driving circuit as claimed in claim 2, which is characterized in that the driving circuit module includes two driving circuits
Unit, and each driving circuit unit receives different driving signals in the same time.
4. driving circuit as claimed in claim 3, which is characterized in that the speed of the shutdown voltage signal after speed regulation, which is greater than, to be adjusted
The speed of turning-on voltage signal after speed.
5. driving circuit as claimed in claim 3, which is characterized in that
When the auxiliary winding module only includes an auxiliary winding, made with the pressure difference of the auxiliary winding and the main winding
For turning-on voltage signal, using zero level as shutdown voltage signal, wherein the voltage at the auxiliary winding both ends need to be higher than described
The voltage of main winding.
6. driving circuit as claimed in claim 3, which is characterized in that
When the auxiliary winding module include two auxiliary windings when, using the induced voltage of auxiliary winding as with the auxiliary winding
The driving signal of corresponding driving circuit unit.
7. driving circuit as described in claim 1, which is characterized in that in the driving circuit include it is following in one or
It is multinomial: resistance, diode, triode.
8. a kind of driving circuit of full-bridge synchronous rectification characterized by comprising the described in any item self-powereds of claim 1~7
Dynamic circuit and integrated chip；
The driving circuit is for driving top metal-oxide-semiconductor, and the integrated chip is for driving lower part metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976069.1A CN109698613B (en) | 2017-10-19 | 2017-10-19 | Self-driving circuit and full-bridge synchronous rectification driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710976069.1A CN109698613B (en) | 2017-10-19 | 2017-10-19 | Self-driving circuit and full-bridge synchronous rectification driving circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109698613A true CN109698613A (en) | 2019-04-30 |
| CN109698613B CN109698613B (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710976069.1A Active CN109698613B (en) | 2017-10-19 | 2017-10-19 | Self-driving circuit and full-bridge synchronous rectification driving circuit |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339866A (en) * | 2000-08-17 | 2002-03-13 | 伊博电源（杭州）有限公司 | New self-driving circuit of synchronous rectifier tube |
| CN1780128A (en) * | 2004-11-26 | 2006-05-31 | 中兴通讯股份有限公司 | Synchronous commutating self-driving circuit for single-end conversion |
| CN101237189A (en) * | 2007-01-31 | 2008-08-06 | 力博特公司 | Positive activation converter |
| CN102170240A (en) * | 2011-04-20 | 2011-08-31 | 浙江大学 | Hybrid drive full-bridge synchronous rectifier |
| CN102497119A (en) * | 2011-11-27 | 2012-06-13 | 浙江大学 | Mixed type bridge rectifier |
| WO2014151513A1 (en) * | 2013-03-15 | 2014-09-25 | Power-One, Inc. | Power converter with self-driven synchronous rectifier control circuitry |
| CN104283443A (en) * | 2014-09-30 | 2015-01-14 | 深圳市南华东方科技有限公司 | Self-driven synchronous rectifier circuit with dead-time topological structure |
| CN209930165U (en) * | 2019-01-30 | 2020-01-10 | 西安福华力能电源有限公司 | Synchronous rectifying device using driving winding |
-
2017
- 2017-10-19 CN CN201710976069.1A patent/CN109698613B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1339866A (en) * | 2000-08-17 | 2002-03-13 | 伊博电源（杭州）有限公司 | New self-driving circuit of synchronous rectifier tube |
| CN1780128A (en) * | 2004-11-26 | 2006-05-31 | 中兴通讯股份有限公司 | Synchronous commutating self-driving circuit for single-end conversion |
| CN101237189A (en) * | 2007-01-31 | 2008-08-06 | 力博特公司 | Positive activation converter |
| CN102170240A (en) * | 2011-04-20 | 2011-08-31 | 浙江大学 | Hybrid drive full-bridge synchronous rectifier |
| CN102497119A (en) * | 2011-11-27 | 2012-06-13 | 浙江大学 | Mixed type bridge rectifier |
| WO2014151513A1 (en) * | 2013-03-15 | 2014-09-25 | Power-One, Inc. | Power converter with self-driven synchronous rectifier control circuitry |
| CN104283443A (en) * | 2014-09-30 | 2015-01-14 | 深圳市南华东方科技有限公司 | Self-driven synchronous rectifier circuit with dead-time topological structure |
| CN209930165U (en) * | 2019-01-30 | 2020-01-10 | 西安福华力能电源有限公司 | Synchronous rectifying device using driving winding |
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|---|---|
| CN109698613B (en) | 2021-11-05 |
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