CN103107683A - Half bridge driving circuit of power tube - Google Patents
Half bridge driving circuit of power tube Download PDFInfo
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- CN103107683A CN103107683A CN2011103521007A CN201110352100A CN103107683A CN 103107683 A CN103107683 A CN 103107683A CN 2011103521007 A CN2011103521007 A CN 2011103521007A CN 201110352100 A CN201110352100 A CN 201110352100A CN 103107683 A CN103107683 A CN 103107683A
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Abstract
The invention discloses a half bridge driving circuit of a power tube. The half bridge driving circuit of the power tube comprises a pulse transformer and a pulse transformer driving circuit, wherein the pulse transformer driving circuit is connected with a primary coil of the pulse transformer. The half bridge driving circuit of the power tube is characterized in that pulse transformer is provided with two secondary coils, and each secondary coil is connected with a power tube through a power tube driving circuit. By means of the half bridge driving circuit of the power tube, the single pulse transformer is used, the two power tubes are trigged at the same time, and the circuit structure is enabled to be simplified. In addition, due to the fact a triode is added on a grid electrode of each power tube, the electro-discharging of junction capacitance when the power tubes are turned off is accelerated, at the same time the grid electrode of each power tube joints a transient state in parallel to restrain a diode, and a generated voltage spike caused by quick turn-off is absorbed. The latching effect is effectively prevented. At the same time the grid electrode oscillation is prevented, and the power tubes are enabled to work in safe working areas.
Description
Technical field
The present invention relates to the power tube drive circuit technical field, particularly a kind of half-bridge drive circuit of power tube.
Background technology
In the charger technical field, often need to use power tube at present, power tube relies on half-bridge drive circuit to drive.There are the following problems for existing power tube half-bridge drive circuit:
1, a pulse transformer can only drive a power tube, causes the half-bridge drive circuit complex structure;
2, power tube is had no progeny in the pass, and the power tube junction capacitance is long discharge time, causes power loss larger;
When 3, power tube turn-offed fast, the due to voltage spikes that produces easily produced latching effect, caused the vibration of power tube grid, damaged power tube.
Summary of the invention
Technical problem to be solved by this invention is that a kind of simple in structure, the half-bridge drive circuit that can effectively protect power tube is provided for the existing problems of half-bridge drive circuit of existing power tube.
Technical problem to be solved by this invention can be achieved through the following technical solutions:
A kind of half-bridge drive circuit of power tube, comprise that a pulse transformer, pulse transformer driving circuit, described pulse transformer driving circuit are connected with the primary coil of described pulse transformer, it is characterized in that, described pulse transformer has two secondary coils, and each secondary coil connects a power tube by a power tube drive circuit.
In a preferred embodiment of the invention, described power tube drive circuit comprises the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first triode, Transient Suppression Diode; The negative pole of the positive pole of described the first diode and the second diode and connect after connect a tap of secondary coil; The negative pole of the first diode connects the grid of described power tube by the first resistance, the positive pole of the second diode connects the grid of described power tube by the second resistance; The public connecting end of the negative pole of the first diode and the first resistance connects the collector electrode of described the first triode, the ground level of the first triode connects an end of the 3rd resistance, the negative pole of the other end of the 3rd resistance and described the 3rd diode and connect after connect another tap of secondary coil; Connect the source electrode of power tube together with the positive pole of the positive pole of the emitter of described the first triode and the 3rd diode, an end of the 4th resistance, Transient Suppression Diode, the other end of the 4th resistance and the negative pole of Transient Suppression Diode connect the grid of described power tube.
In a preferred embodiment of the invention, described pulse transformer driving circuit comprises the first potential pulse source, second voltage clock, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second triode, the 3rd triode; The negative pole in the first potential pulse source and the negative pole of second voltage clock also connect rear ground connection; The positive pole in one termination the first potential pulse source of the 4th resistance after the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance are connected successively, the positive pole of one termination second voltage clock of the 7th resistance, the public connecting end of the 4th resistance and the 5th resistance connects the ground level of the second triode, the public connecting end of the 6th resistance and the 7th resistance connects the ground level of the 3rd triode, the public connecting end of the emitter of the emitter of the second triode and the 3rd triode and the 5th resistance and the 6th resistance together and after connecing by the 8th grounding through resistance; The collector electrode of the collector electrode of the second triode and the 3rd triode connects respectively two taps of the primary coil of described pulse transformer.
Owing to having adopted technical scheme as above, the present invention uses an independent pulse transformer, simultaneously two power tubes is triggered simultaneously, and circuit structure is simplified more.Another by grid increase by one triode at power tube, accelerated the discharge of junction capacitance when power tube turn-offs; At the grid of power tube and connect Transient Suppression Diode, absorb owing to turn-offing fast the due to voltage spikes that produces simultaneously.Effectively prevented latching effect.Prevent simultaneously the grid vibration, made power tube work in the trouble free service interval.
Description of drawings
Fig. 1 is electrical schematic diagram of the present invention.
Embodiment
In order to make technological means of the present invention, creation characteristic, to reach purpose and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
Referring to Fig. 1, a kind of half-bridge drive circuit of power tube, comprise that a pulse transformer T, pulse transformer driving circuit, pulse transformer driving circuit are connected with the primary coil T1 of pulse transformer T, this pulse transformer T has two secondary coil T2, T3, and each secondary coil T2, T3 connect a power tube BG8, BG14 by a power tube drive circuit.
A power tube drive circuit comprises diode D1, D2, D3, resistance R 6, R7, R9, R10, triode BG1, Transient Suppression Diode TVS3; The negative pole of the positive pole of diode D1 and diode D2 and connect after connect the tap of secondary coil T2; The negative pole of diode D1 connects the grid of power tube BG8 by resistance R 6.The positive pole of diode D2 connects the grid of power tube BG8 by resistance R 7; The public connecting end of the negative pole of diode D1 and resistance R 6 connects the collector electrode of triode BG1, the end of the ground level connecting resistance R9 of triode BG1, the negative pole of the other end of resistance R 9 and diode D3 and connect after connect another tap of secondary coil T2; Connect the source electrode of power tube BG8 together with the positive pole of the positive pole of the emitter of triode BG1 and diode D3, an end of resistance R 10, Transient Suppression Diode TVS3, the negative pole of the other end of resistance R 10 and Transient Suppression Diode TVS3 connects the grid of power tube BG8.
Another power tube drive circuit comprises diode D4, D5, D6, resistance R 13, R14, R15, R16, triode BG2, Transient Suppression Diode TVS4; The negative pole of the positive pole of diode D4 and diode D5 and connect after connect the tap of secondary coil T3; The negative pole of diode D4 connects the grid of power tube BG14 by resistance R 13.The positive pole of diode D5 connects the grid of power tube BG14 by resistance R 14; The public connecting end of the negative pole of diode D4 and resistance R 13 connects the collector electrode of triode BG2, the end of the ground level connecting resistance R15 of triode BG2, the negative pole of the other end of resistance R 15 and diode D6 and connect after connect another tap of secondary coil T3; Connect the source electrode of power tube BG14 together with the positive pole of the positive pole of the emitter of triode BG2 and diode D6, an end of resistance R 16, Transient Suppression Diode TVS4, the negative pole of the other end of resistance R 16 and Transient Suppression Diode TVS4 connects the grid of power tube BG14.
Pulse transformer driving circuit comprises potential pulse source VPULSE1, VPULSE2, resistance R 33, R34, R35, R36, R32, triode BG6, BG5; The negative pole of the negative pole of potential pulse source VPULSE1 and potential pulse source VPULSE2 also connects rear ground connection; The positive pole of one termination voltage clock VPULSE1 of the resistance R 33 after resistance R 33, R34, R35, R36 connect successively, the positive pole of one termination voltage clock VPULSE2 of resistance R 36, the public connecting end of resistance R 33 and resistance R 34 connects the ground level of triode BG6, the public connecting end of resistance R 35 and resistance R 36 connects the ground level of triode BG5, the public connecting end of the emitter of the emitter of triode BG6 and triode BG5 and resistance R 34 and resistance R 35 together and after connecing by resistance R 32 ground connection; The collector electrode of triode BG6 is connected collector electrode and is connected respectively two taps of the primary coil T1 of pulse transformer T with triode BG5.
Above demonstration and described basic principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (3)
1. the half-bridge drive circuit of a power tube, comprise that a pulse transformer, pulse transformer driving circuit, described pulse transformer driving circuit are connected with the primary coil of described pulse transformer, it is characterized in that, described pulse transformer has two secondary coils, and each secondary coil connects a power tube by a power tube drive circuit.
2. the half-bridge drive circuit of power tube as claimed in claim 1, it is characterized in that, described power tube drive circuit comprises the first diode, the second diode, the 3rd diode, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first triode, Transient Suppression Diode; The negative pole of the positive pole of described the first diode and the second diode and connect after connect a tap of secondary coil; The negative pole of the first diode connects the grid of described power tube by the first resistance, the positive pole of the second diode connects the grid of described power tube by the second resistance; The public connecting end of the negative pole of the first diode and the first resistance connects the collector electrode of described the first triode, the ground level of the first triode connects an end of the 3rd resistance, the negative pole of the other end of the 3rd resistance and described the 3rd diode and connect after connect another tap of secondary coil; Connect the source electrode of power tube together with the positive pole of the positive pole of the emitter of described the first triode and the 3rd diode, an end of the 4th resistance, Transient Suppression Diode, the other end of the 4th resistance and the negative pole of Transient Suppression Diode connect the grid of described power tube.
3. the half-bridge drive circuit of power tube as claimed in claim 1, it is characterized in that, described pulse transformer driving circuit comprises the first potential pulse source, second voltage clock, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the second triode, the 3rd triode; The negative pole in the first potential pulse source and the negative pole of second voltage clock also connect rear ground connection; The positive pole in one termination the first potential pulse source of the 4th resistance after the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance are connected successively, the positive pole of one termination second voltage clock of the 7th resistance, the public connecting end of the 4th resistance and the 5th resistance connects the ground level of the second triode, the public connecting end of the 6th resistance and the 7th resistance connects the ground level of the 3rd triode, the public connecting end of the emitter of the emitter of the second triode and the 3rd triode and the 5th resistance and the 6th resistance together and after connecing by the 8th grounding through resistance; The collector electrode of the collector electrode of the second triode and the 3rd triode connects respectively two taps of the primary coil of described pulse transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103521007A CN103107683A (en) | 2011-11-09 | 2011-11-09 | Half bridge driving circuit of power tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103521007A CN103107683A (en) | 2011-11-09 | 2011-11-09 | Half bridge driving circuit of power tube |
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| CN103107683A true CN103107683A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103521007A Pending CN103107683A (en) | 2011-11-09 | 2011-11-09 | Half bridge driving circuit of power tube |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368362A (en) * | 2013-05-27 | 2013-10-23 | 苏州贝克微电子有限公司 | Driving circuit of dual-power field-effect tube under half-bridge configuration |
| CN105226920A (en) * | 2015-11-06 | 2016-01-06 | 国网上海市电力公司 | A kind of direct current transportation serial parallel converter control system |
| CN107370353A (en) * | 2016-05-11 | 2017-11-21 | 法雷奥电机控制系统公司 | Switching system and the power converter for including such switching system |
| CN109921631A (en) * | 2019-03-19 | 2019-06-21 | 西安微电子技术研究所 | A kind of bridge driver isolated upper bridge bootstrap charge pump circuit and control method |
| CN110868062A (en) * | 2019-10-18 | 2020-03-06 | 珠海格力电器股份有限公司 | Novel half-bridge driving circuit and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7245509B1 (en) * | 2006-12-01 | 2007-07-17 | Lien Chang Electronic Enterprise Co., Ltd. | Half bridge driver |
| CN201018405Y (en) * | 2007-03-09 | 2008-02-06 | 珠海泰坦科技股份有限公司 | Whole bridge phase-shift drive circuit |
| CN201533253U (en) * | 2009-10-23 | 2010-07-21 | 上海施能电器设备厂 | MOS tube drive circuit of high-frequency charger |
| CN102043080A (en) * | 2009-10-23 | 2011-05-04 | 上海施能电器设备厂 | Current sampling method and current sampling circuit of high-frequency charger |
| CN202364109U (en) * | 2011-11-09 | 2012-08-01 | 上海施能电器设备厂 | Half bridge drive circuit |
-
2011
- 2011-11-09 CN CN2011103521007A patent/CN103107683A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7245509B1 (en) * | 2006-12-01 | 2007-07-17 | Lien Chang Electronic Enterprise Co., Ltd. | Half bridge driver |
| CN201018405Y (en) * | 2007-03-09 | 2008-02-06 | 珠海泰坦科技股份有限公司 | Whole bridge phase-shift drive circuit |
| CN201533253U (en) * | 2009-10-23 | 2010-07-21 | 上海施能电器设备厂 | MOS tube drive circuit of high-frequency charger |
| CN102043080A (en) * | 2009-10-23 | 2011-05-04 | 上海施能电器设备厂 | Current sampling method and current sampling circuit of high-frequency charger |
| CN202364109U (en) * | 2011-11-09 | 2012-08-01 | 上海施能电器设备厂 | Half bridge drive circuit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103368362A (en) * | 2013-05-27 | 2013-10-23 | 苏州贝克微电子有限公司 | Driving circuit of dual-power field-effect tube under half-bridge configuration |
| CN105226920A (en) * | 2015-11-06 | 2016-01-06 | 国网上海市电力公司 | A kind of direct current transportation serial parallel converter control system |
| CN107370353A (en) * | 2016-05-11 | 2017-11-21 | 法雷奥电机控制系统公司 | Switching system and the power converter for including such switching system |
| CN109921631A (en) * | 2019-03-19 | 2019-06-21 | 西安微电子技术研究所 | A kind of bridge driver isolated upper bridge bootstrap charge pump circuit and control method |
| CN110868062A (en) * | 2019-10-18 | 2020-03-06 | 珠海格力电器股份有限公司 | Novel half-bridge driving circuit and control method thereof |
| CN110868062B (en) * | 2019-10-18 | 2020-11-27 | 珠海格力电器股份有限公司 | Half-bridge driving circuit and control method thereof |
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Application publication date: 20130515 |