CN104601016A - Method for reducing loss of synchronous rectification drive circuit based on coupling coil - Google Patents
Method for reducing loss of synchronous rectification drive circuit based on coupling coil Download PDFInfo
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- CN104601016A CN104601016A CN201510017139.1A CN201510017139A CN104601016A CN 104601016 A CN104601016 A CN 104601016A CN 201510017139 A CN201510017139 A CN 201510017139A CN 104601016 A CN104601016 A CN 104601016A
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
-
- 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
Abstract
The invention discloses a method for reducing loss of a synchronous rectification drive circuit based on a coupling coil. The method specifically comprises the steps of establishing the synchronous rectification drive circuit, detecting a rectification branch circuit current signal and using the detected current signal to synchronize a driven opening signal, enabling the secondary side of a current transformer a to be subjected to short circuit by conducting internal circuit adjustment on the after the synchronous rectification drive circuit synchronous rectification drive circuit outputs high lever, adjusting voltage pulse width of the secondary side of the current transformer a to be in an optimal state in a self-adaptive mode with change of the rectification branch circuit current, utilizing the relation between exciting current and the current of the secondary side of the current transformer to turn off a synchronous rectification tube. The method for reducing loss of the synchronous rectification drive circuit based on the coupling coil has the advantages of being low power consumption, good in universality and capable of working in a current interruption or continuous mode.
Description
Technical field
The invention belongs to power circuit application process technical field, relate to a kind of method reducing synchronous rectification driving circuit loss based on coupling coil.
Background technology
Along with the fast development of electronic technology, people more and more rely on electronic equipment, and conveniently people carry electronic product when going on a journey, and have occurred increasing portable type electronic product, as: mobile phone and panel computer etc.
Nowadays, the volume of portable type electronic product is more and more less, and in order to ensure the fail safe of electronic product, its power source supplying voltage requires more and more lower, and under certain power, its current requirements is larger; But the rising of electric current can bring a very severe problem, the on-state loss brought due to diode rectification exactly causes greatly the inefficient problem of switch converters.For this problem, the power metal oxide semiconductor field-effect transistor of low on-resistance (Mosfet) is utilized to replace diode rectification, i.e. synchronous rectification, to improved efficiency effect clearly; And key technical problem that synchronous rectification faces is exactly the stationary problem that power metal oxide semiconductor field-effect transistor (Mosfet) drives to adopt low-voltage power metal oxide semiconductor field-effect transistor (Mosfet) to carry out.
Power metal oxide semiconductor field-effect transistor (Mosfet) drives and is mainly divided into self-driven and outer driving two type.Wherein, the self-driven type according to synchronized signal source is divided into voltage-type self-driven self-driven with current mode; Outer driving due to cost higher, voltage-type is self-driven to be affected by change range of input voltage, so less employing; Current mode is self-driven is a kind of comparatively ideal synchronous rectification drive scheme, but the large problem of synchronous rectification driving circuit loss receives much concern always.
Summary of the invention
The object of the present invention is to provide a kind of method reducing synchronous rectification driving circuit loss based on coupling coil, have low in energy consumption, versatility good and can work in the feature of discontinuous current and continuous mode.
The technical solution adopted in the present invention is: the method reducing synchronous rectification driving circuit loss based on coupling coil, specifically implements according to following steps:
Step 1, structure synchronous rectification driving circuit;
Step 2, construct after synchronous rectification driving circuit through step 1, detect rectification branch current signal, come synchronously drivenly to open signal with the current signal detected;
Step 3, export after high level through step 2 commutation driver circuit to be synchronized, synchronous rectification driving circuit is by the adjustment of internal circuit, make current transformer a secondary short circuit, along with the change of rectification branch current, the Voltage Pulse Width of adaptive adjustment current transformer a secondary is to optimum state;
Step 4, through step 3, the relation of exciting current summation current transformer a secondary current is utilized to be turned off by synchronous rectifier.
Feature of the present invention is also:
Step 1 is concrete to be implemented in accordance with the following methods:
Rectification branch road adds a current transformer a, and current transformer a carrys out sensed current signal; Connect a switching tube at the secondary of current transformer a, utilize switching tube conducting by the principle of secondary short circuit to reduce the loss of synchronous rectification driving circuit;
The branch road at switching tube place adds a current transformer b again, a two ends triode a in parallel again of secondary a diode c, the diode c in parallel of current transformer b; Wherein, the negative electrode of diode c connects the base stage of triode a, and the anode of diode c connects the emitter of triode a;
Again the secondary A terminal of current transformer a is received the anode of diode a; The negative electrode of diode a receives the collector electrode of the anode of diode b, the input of Mosfet driver and triode a respectively; The negative electrode of diode b is received the emitter of triode b and the power end of Mosfet driver;
At power end and an earth terminal electric capacity in parallel of Mosfet driver, a resistance R in parallel between the emitter and base stage of triode b
1, the collector electrode of triode b and resistance R
3one end connect, resistance R
3the other end be connected with the grid of switching tube; The base stage of triode b is connected with the negative electrode of voltage-stabiliser tube, and the anode of voltage-stabiliser tube is connected with the earth terminal of Mosfet driver, the output of Mosfet driver and an input resistance R in parallel
2, at the grid of switching tube and output termination diode d of Mosfet driver, the negative electrode of described diode d connects the output of Mosfet driver, and the anode of diode d connects the grid of switching tube;
The B of current transformer a secondary end, the drain electrode of switching tube, the emitter of triode a, the anode of voltage-stabiliser tube, the earth terminal of Mosfet driver are all connected together and then draw the earth terminal of single line as synchronous rectification drive singal, draws the other end of single line as synchronous rectification drive singal from the output of Mosfet driver.
Mosfet drive model in step 1 is TC1413.
Step 2 is specifically implemented according to following steps:
Step 2.1, construct after synchronous rectification driving circuit through step 1, connect synchronous rectification driving circuit, current i
1flow through synchronous rectification Mosfet parasitic diode, namely flow through the former limit of current transformer a, induce current i by current transformer a secondary
2, current i
2respectively flow through diode a, diode b, complete to capacitor charging;
Step 2.2, to give after capacitor charging through step 2.1, after Mosfet driver input end voltage equals the voltage at electric capacity two ends, export high level by Mosfet driver and drive synchronous rectification Mosfet to work.
Step 3 is specifically implemented according to following steps:
Step 3.1, current transformer a secondary current continue to capacitor charging, treat that electric capacity (6) voltage arrives the voltage stabilizing value of voltage-stabiliser tube, have electric current to flow through and make triode (13) conducting in voltage-stabiliser tube, and then the conducting of driving switch pipe;
Step 3.2, after the conducting of step 3.1 switching tube, by current transformer a secondary short circuit, now current transformer a secondary current all flows through switching tube, but current transformer a secondary voltage becomes zero, reduce the overlapping of current transformer secondary voltage and electric current, reduce the loss of synchronous rectification driving circuit.
Step 4 is concrete to be implemented in accordance with the following methods:
When equivalent for the current transformer a exciting current to secondary is greater than current transformer a secondary current, current transformer b secondary current drives triode a conducting, by the vanishing of Mosfet driver input end voltage, Mosfet driver output low level turns off synchronous rectification Mosfet, the gate source voltage of Simultaneous Switching pipe passes through diode discharge, switching tube turns off, and synchronous rectification driving circuit quits work.
Beneficial effect of the present invention is:
1. the present invention is based on coupling coil reduces in the method for synchronous rectification driving circuit loss, adopt the mode of current transformer a secondary paralleling switch, after synchronous rectification driving circuit output driving meets the demands, open switching tube in parallel, by the secondary short circuit of current transformer a, the mode of short circuit makes the overlapping reduction of electric current and voltage of current transformer a secondary, thus reduces the power loss of additional driver circuit.
2. because the electric current flowing through power Mosfet in side circuit is change, current transformer a secondary current is caused also to be change, because each current transformer a secondary current flows through diode a, diode b is to capacitor charging, the voltage stabilizing value that must be charged to voltage-stabiliser tube just can make triode b conducting, then driving switch pipe conducting, along with the change of current transformer a secondary current size, the Voltage Pulse Width of current transformer a secondary can adjustment width automatically, all the time the Voltage Pulse Width of current transformer a secondary is made to be in optimized state, optimized Voltage Pulse Width reduces the secondary loss of current transformer a.
3. in the method that the present invention is based on the loss of coupling coil reduction synchronous rectification driving circuit, by adding the mode of current transformer b in the branch road of switching tube, make when the equivalence of current transformer a is greater than the secondary current of current transformer a to the exciting current of secondary, reverse in switching tube branch current direction, then current transformer b secondary current drives triode a conducting to be dragged down by the input of Mosfet driver, synchronous rectification driving circuit output low level; So just the driving low level output of synchronous rectification driving circuit can be made to be synchronized with the current signal of rectification branch road accurately by the size of the exciting current controlling current transformer a, further reduce the on-state loss of rectification branch road.
4. the method that the present invention is based on the loss of coupling coil reduction synchronous rectification driving circuit not only can use in discontinuous current situation, and can also use when current continuity, every place of using synchronous rectification that needs can use.
Accompanying drawing explanation
Fig. 1 is the structural representation reducing the synchronous rectification driving circuit related in the method for synchronous rectification driving circuit loss based on coupling coil of the present invention.
In figure, 1. synchronous rectification Mosfet parasitic diode, 2. current transformer a, 3. current transformer b, 4.Mosfet driver, 5. switching tube, 6. electric capacity, 7. diode a, 8. diode b, 9. diode c, 10. voltage-stabiliser tube, 11. diode d, 12. triode a, 13. triode b, 14. resistance R
1, 15. resistance R
2, 16. resistance R
3.
Embodiment
The present invention is based on the method that coupling coil reduces synchronous rectification driving circuit loss, as shown in Figure 1, specifically implement according to following steps:
Step 1, structure synchronous rectification driving circuit, concrete grammar is as follows:
Synchronous rectification driving circuit, specifically as shown in Figure 1, that represent in the dotted line frame in Fig. 1 is the synchronous rectification Mosfet of alternative existing rectifier diode, and the branch road at its place is rectification branch road;
Rectification branch road adds a current transformer a2, and current transformer a2 carrys out sensed current signal; Connect a switching tube 5 at the secondary of current transformer a2, utilize switching tube 5 conducting by the principle of secondary short circuit to reduce the loss of synchronous rectification driving circuit;
The branch road at switching tube 5 place adds a current transformer b3 again, a two ends triode a12 in parallel again of secondary a diode c9, the diode c9 in parallel of current transformer b3; Wherein, the negative electrode of diode c9 connects the base stage of triode a12, and the anode of diode c9 connects the emitter of triode a12;
Again the secondary A terminal of current transformer a2 is received the anode of diode a7; The negative electrode of diode a7 receives the collector electrode of the anode of diode b8, the input of Mosfet driver 4 and triode a12 respectively; The negative electrode of diode b8 is received the emitter of triode b13 and the power end of Mosfet driver 4;
At power end and an earth terminal electric capacity 6 in parallel of Mosfet driver 4, a resistance R in parallel between the emitter and base stage of triode b13
1the collector electrode of 14, triode b13 and resistance R
3one end of 16 connects, resistance R
3the other end of 16 is connected with the grid of switching tube 5; The base stage of triode b13 is connected with the negative electrode of voltage-stabiliser tube 10, and the anode of voltage-stabiliser tube 10 is connected with the earth terminal of Mosfet driver 4, the output of Mosfet driver 4 and an input resistance R in parallel
215, at the grid of switching tube 5 and output termination diode d11 of Mosfet driver 4, the negative electrode of diode d11 connects the output of Mosfet driver 4, and the anode of diode d11 connects the grid of switching tube 5;
The B of current transformer a2 secondary end, the drain electrode of switching tube 5, the emitter of triode a12, the anode of voltage-stabiliser tube 10, the earth terminal of Mosfet driver 4 are all connected together and then draw the earth terminal of single line as synchronous rectification drive singal, draws the other end of single line as synchronous rectification drive singal from the output of Mosfet driver 4.
Wherein, (input terminal voltage exports high level higher than threshold drive device to the homophase Mosfet driver 4 related to, input terminal voltage is lower than threshold drive device output low level), the model being called for short PD employing is TC1413, and the homophase Mosfet driver of other models is all applicable.
The synchronous rectification driving circuit constructed is not limited to a certain specific circuit topology, and all topologys all can be suitable for.
Step 2, construct after synchronous rectification driving circuit through step 1, detect rectification branch current signal, come synchronously drivenly to open signal with the current signal detected, concrete grammar is as follows:
Step 2.1, construct after synchronous rectification driving circuit through step 1, connect synchronous rectification driving circuit, current i
1flow through synchronous rectification Mosfet parasitic diode 1, namely flow through the former limit of current transformer a2, induce current i by current transformer a2 secondary
2, current i
2respectively flow through diode a7, diode b8, complete and charge to electric capacity 6;
Step 2.2, charge to electric capacity 6 through step 2.1 after, after Mosfet driver 4 input terminal voltage equals the voltage at electric capacity 6 two ends, export high level by Mosfet driver 4 and drive synchronous rectification Mosfet to work;
Namely once there be electric current to flow through synchronous rectification Mosfet, current transformer a2 secondary induces electric current will export high level by triggering synchronous commutation driver circuit, solves synchronous rectification driving circuit outputting drive voltage rising edge and the stationary problem flowing through synchronous rectification Mosfet electric current rising time.Because synchronous rectification driving circuit response speed is very fast, make rectified current flow through time of power Mosfet parasitic diode 1 shorter, reduce converter on-state loss;
Step 3, export after high level through step 2 commutation driver circuit to be synchronized, synchronous rectification driving circuit is by the adjustment of internal circuit, make current transformer a2 secondary short circuit, along with the change of rectification branch current, the Voltage Pulse Width of adaptive adjustment current transformer a2 secondary, to optimum state, is specifically implemented in accordance with the following steps:
Step 3.1, current transformer a2 secondary current continue to charge to electric capacity 6, treat that electric capacity 6 voltage arrives the voltage stabilizing value of voltage-stabiliser tube 10, have electric current to flow through and make triode 13 conducting in voltage-stabiliser tube 10, and then driving switch pipe 5 conducting;
Namely no matter how rectification branch current changes, and current transformer a2 secondary current is all that achieve the Automatic adjusument of circuit, under solving different conditions, circuit realizes optimized problem automatically first by the voltage charging requirement value at electric capacity 6 two ends;
Step 3.2, after step 3.1 switching tube 5 conducting, by current transformer a2 secondary short circuit, now current transformer a2 secondary current all flows through switching tube 5, but current transformer a2 secondary voltage becomes zero, reduce the overlapping of current transformer secondary voltage and electric current, solve due to synchronous rectification driving circuit current transformer a2 secondary voltage and electric current is overlapping and the problem that loss that is that cause is large, reduce the loss of synchronous rectification driving circuit.
Step 4, through step 3, utilize the relation of exciting current summation current transformer a2 secondary current to be turned off by synchronous rectifier, concrete grammar is as follows:
When equivalent for the current transformer a2 exciting current to secondary is greater than current transformer a2 secondary current, current transformer b3 secondary current drives triode a12 conducting, by the vanishing of Mosfet driver 4 input terminal voltage, Mosfet driver 4 output low level turns off synchronous rectification Mosfet, the gate source voltage of Simultaneous Switching pipe 5 is discharged by diode 11, switching tube 5 turns off, and synchronous rectification driving circuit quits work; Well solve the trailing edge of synchronous rectification driving circuit outputting drive voltage by adding current transformer b3 and flow through synchronous rectification Mosfet current value close to zero timing synchronization problem, make as much as possible to flow through conducting channel instead of the parasitic diode that synchronous rectification Mosfet electric current flows through Mosfet, reduce the on-state loss of converter.
The present invention is based on the method that coupling coil reduces synchronous rectification driving circuit loss, in rectification branch road, add current transformer a2 detection electric current provide synchronizing signal to synchronous rectification driving circuit, and the pulse duration of adjustment in use circuit adaptive adjustment current transformer a2 secondary voltage when converter rectification branch current changes, reduce the loss of synchronous rectification driving circuit; When synchronous rectifier is opened, synchronous rectification driving circuit can provide transient high-current to synchronous rectifier grid source capacitor charging, when synchronous rectifier turns off, synchronous rectification driving circuit provides low impedance discharge loop to synchronous rectifier grid source electric capacity, improves the switching speed of synchronous rectifier; And by adding the mode of current transformer b3, utilize the relation of current transformer a2 exciting current and secondary current to carry out synchronized rectification and drive cut-off signals, achieve the high speed break-make of synchronous rectifier, and reduce converter on-state loss to greatest extent, and reduce synchronous rectification driving circuit supplementary load loss.In addition, the circuit of synchronous rectification output drive signal of structure does not change with the change of converter operating state, has good stability; And current transformer volume in drive circuit is very little, be conducive to the raising of power density.
Claims (6)
1. reduce the method for synchronous rectification driving circuit loss based on coupling coil, it is characterized in that, specifically implement according to following steps:
Step 1, structure synchronous rectification driving circuit;
Step 2, construct after synchronous rectification driving circuit through step 1, detect rectification branch current signal, come synchronously drivenly to open signal with the current signal detected;
Step 3, export after high level through step 2 commutation driver circuit to be synchronized, synchronous rectification driving circuit is by the adjustment of internal circuit, make current transformer a (2) secondary short circuit, along with the change of rectification branch current, the Voltage Pulse Width of adaptive adjustment current transformer a (2) secondary is to optimum state;
Step 4, through step 3, the relation of exciting current summation current transformer a (2) secondary current is utilized to be turned off by synchronous rectifier.
2. the method reducing synchronous rectification driving circuit loss based on coupling coil according to claim 1, is characterized in that, described step 1 is concrete to be implemented in accordance with the following methods:
Rectification branch road adds a current transformer a (2), and current transformer a (2) carrys out sensed current signal; Connect a switching tube (5) at the secondary of current transformer a (2), utilize switching tube (5) conducting by the principle of secondary short circuit to reduce the loss of synchronous rectification driving circuit;
The branch road at switching tube (5) place adds a current transformer b (3) again, a secondary diode c (9) in parallel of current transformer b (3), a two ends triode a (12) in parallel again of diode c (9); Wherein, the negative electrode of diode c (9) connects the base stage of triode a (1) (2), and the anode of diode c (9) connects the emitter of triode a (12);
Again the secondary A terminal of current transformer a (2) is received the anode of diode a (7); The negative electrode of diode a (7) receives the collector electrode of the anode of diode b (8), the input of Mosfet driver (4) and triode a (12) respectively; The negative electrode of diode b (8) is received the emitter of triode b (13) and the power end of Mosfet driver (4);
Power end and an earth terminal electric capacity (6) in parallel of Mosfet driver (4), a resistance R in parallel between the emitter and base stage of triode b (13)
1(14), the collector electrode of triode b (13) and resistance R
3(16) one end connects, described resistance R
3(16) the other end is connected with the grid of switching tube (5); The base stage of triode b (13) is connected with the negative electrode of voltage-stabiliser tube (10), the anode of described voltage-stabiliser tube (10) is connected with the earth terminal of Mosfet driver (4), the output of described Mosfet driver (4) and an input resistance R in parallel
2(15), the grid of switching tube (5) and output termination diode d (11) of Mosfet driver (4), the negative electrode of described diode d (11) connects the output of Mosfet driver (4), and the anode of diode d (11) connects the grid of switching tube (5);
The B of current transformer a (2) secondary end, the drain electrode of switching tube (5), the emitter of triode a (12), the anode of voltage-stabiliser tube (10), the earth terminal of Mosfet driver (4) are all connected together and then draw the earth terminal of single line as synchronous rectification drive singal, draws the other end of single line as synchronous rectification drive singal from the output of Mosfet driver (4).
3. the method reducing synchronous rectification driving circuit loss based on coupling coil according to claim 2, it is characterized in that, Mosfet driver (4) model in described step 1 is TC1413.
4. the method reducing synchronous rectification driving circuit loss based on coupling coil according to claim 2, it is characterized in that, described step 2 is specifically implemented according to following steps:
Step 2.1, construct after synchronous rectification driving circuit through step 1, connect synchronous rectification driving circuit, current i
1flow through synchronous rectification Mosfet parasitic diode (1), namely flow through the former limit of current transformer a (2), induce current i by current transformer a (2) secondary
2, current i
2respectively flow through diode a (7), diode b (8), complete and charge to electric capacity (6);
Step 2.2, through step 2.1 give electric capacity (6) charging after, after the voltage that Mosfet driver (4) input terminal voltage equals electric capacity (6) two ends, export high level by Mosfet driver (4) and drive synchronous rectification Mosfet to work.
5. the method reducing synchronous rectification driving circuit loss based on coupling coil according to claim 1, it is characterized in that, described step 3 is specifically implemented according to following steps:
Step 3.1, current transformer a (2) secondary current continue to charge to electric capacity (6), treat that electric capacity (6) voltage arrives the voltage stabilizing value of voltage-stabiliser tube (10), there is electric current to flow through in voltage-stabiliser tube (10) and make triode (13) conducting, and then driving switch pipe (5) conducting;
Step 3.2, after step 3.1 switching tube (5) conducting, by current transformer a (2) secondary short circuit, now current transformer a (2) secondary current all flows through switching tube (5), but current transformer a (2) secondary voltage becomes zero, reduce the overlapping of current transformer secondary voltage and electric current, reduce the loss of synchronous rectification driving circuit.
6. the method reducing synchronous rectification driving circuit loss based on coupling coil according to claim 1, is characterized in that, described step 4 is concrete to be implemented in accordance with the following methods:
When equivalent for current transformer a (2) exciting current to secondary is greater than current transformer a (2) secondary current, current transformer b (3) secondary current drives triode a (12) conducting, by Mosfet driver (4) input terminal voltage vanishing, Mosfet driver (4) output low level turns off synchronous rectification Mosfet, the gate source voltage of Simultaneous Switching pipe (5) is by diode (11) electric discharge, switching tube (5) turns off, and synchronous rectification driving circuit quits work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510017139.1A CN104601016B (en) | 2015-01-13 | 2015-01-13 | Method for reducing loss of synchronous rectification drive circuit based on coupling coil |
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|---|---|---|---|
| CN201510017139.1A CN104601016B (en) | 2015-01-13 | 2015-01-13 | Method for reducing loss of synchronous rectification drive circuit based on coupling coil |
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| CN104601016B CN104601016B (en) | 2017-02-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482945A (en) * | 2016-06-07 | 2017-12-15 | 福特全球技术公司 | The separate type Power switching devices of shared source inductance with reduction |
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| CN1387694A (en) * | 1999-11-05 | 2002-12-25 | 艾利森公司 | Externally-driven scheme for synchronous rectification |
| CN1538610A (en) * | 2003-10-24 | 2004-10-20 | 中兴通讯股份有限公司 | Driving device of synchronous rectifier transistor |
| WO2010056989A1 (en) * | 2008-11-14 | 2010-05-20 | Flextronics International Usa, Inc. | Driver for a synchronous rectifier and power converter employing the same |
| US20140218976A1 (en) * | 2012-04-12 | 2014-08-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms |
| CN203859683U (en) * | 2014-05-16 | 2014-10-01 | 西安唯电电气技术有限公司 | Synchronous rectification drive circuit |
-
2015
- 2015-01-13 CN CN201510017139.1A patent/CN104601016B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1387694A (en) * | 1999-11-05 | 2002-12-25 | 艾利森公司 | Externally-driven scheme for synchronous rectification |
| CN1538610A (en) * | 2003-10-24 | 2004-10-20 | 中兴通讯股份有限公司 | Driving device of synchronous rectifier transistor |
| WO2010056989A1 (en) * | 2008-11-14 | 2010-05-20 | Flextronics International Usa, Inc. | Driver for a synchronous rectifier and power converter employing the same |
| US20140218976A1 (en) * | 2012-04-12 | 2014-08-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for regulating power conversion systems with output detection and synchronized rectifying mechanisms |
| CN203859683U (en) * | 2014-05-16 | 2014-10-01 | 西安唯电电气技术有限公司 | Synchronous rectification drive circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482945A (en) * | 2016-06-07 | 2017-12-15 | 福特全球技术公司 | The separate type Power switching devices of shared source inductance with reduction |
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| CN104601016B (en) | 2017-02-08 |
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