CN103066814A - Isolated drive circuit - Google Patents
Isolated drive circuit Download PDFInfo
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- CN103066814A CN103066814A CN2011103251120A CN201110325112A CN103066814A CN 103066814 A CN103066814 A CN 103066814A CN 2011103251120 A CN2011103251120 A CN 2011103251120A CN 201110325112 A CN201110325112 A CN 201110325112A CN 103066814 A CN103066814 A CN 103066814A
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- Prior art keywords
- power switch
- switch pipe
- circuit
- diode
- switching tube
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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
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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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/689—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
- H03K17/691—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/06—Modifications for ensuring a fully conducting state
- H03K2017/066—Maximizing the OFF-resistance instead of minimizing the ON-resistance
Abstract
The invention discloses an isolated drive circuit, relates to an isolated drive circuit used for a switch power switch pipe, and in particular to an isolated drive circuit need dual-circuit mutual complementation. The isolated drive circuit comprises a control circuit used for producing drive pulse signals, an isolated drive transformer with a primary winding and one deputy winding or a plurality of deputy windings, and a stopping condenser connected with the control circuit and the primary winding of the isolated drive transformer. The isolated drive circuit further comprises a drive circuit connected between the deputy windings of the isolated drive transformer and the power switch pipe and used for guiding and connecting the power switch pipe, a discharge circuit used for turning off the power switch pipe and a turn-off circuit. According to the isolated drive circuit, the power switch pipe can be turned off reliably, the power consumption of the control circuit used for producing drive pulse signals can be controlled, and not only advantages of a traditional drive circuit are reserved, but also problems exist in the traditional drive circuit are resolved.
Description
Technical field
The present invention relates to a kind of isolated drive circuit that is applied to the Switching Power Supply power switch pipe, relate in particular to a kind of isolated drive circuit that needs the two-way complementation.
Background technology
The scheme of Switching Power Supply is widely used, and its Primary Component power switch pipe is operated under the high-frequency and high-voltage state.Because the needs of circuit topology itself or based on the consideration of secure context need and will isolate from drive pulse signal and the power switch pipe of controlling circuit.
Fig. 1 has shown a kind of traditional isolated drive circuit figure that prior art provides, as shown in Figure 1, be the isolated drive circuit of power switch pipe in the dotted line frame, comprise former limit capacitance C1, isolation drive transformer T1, secondary bootstrap capacitor C2, bootstrap diode D1.
When driving pulse is opened, driving pulse from control circuit is added between A point and the B point, and the voltage direction of the former secondary winding of isolation drive transformer T1 is upper just lower negative at this moment, after isolated variable, negative pressure bootstrapping, at the C point with reference to ground output, be used for driving power switching tube Q
Sw1.
When driving pulse turn-offed, the A point voltage was identical with the B point voltage.Capacitance C1 forces the former limit winding of isolation drive transformer T1 and secondary winding voltage to change direction, is just namely going up negative time.Isolation drive transformer T1 realizes magnetic reset by secondary winding and bootstrap diode D1 and bootstrap capacitor C2 formation path.This moment, the C point voltage was 0V, power switch pipe Q
Sw1 turn-offs.Because power switch pipe Q
Sw1 MOSFET pipe normally, and the unlatching threshold values of MOSFET pipe is low, when electromagnetic distu is arranged, power switch pipe Q
Sw1 again can be wrong open-minded in the time should turn-offing, thereby reduced the reliability of whole switch power supply system.
Fig. 2 has shown traditional isolated drive circuit figure of a kind of complementation that prior art provides, as shown in Figure 2, be complementary isolated drive circuit in the dotted line frame, comprise that former limit capacitance C1, isolation drive transformer T1 and secondary drive resistance R 1, R2, diode D1, D2.
When the positive drive pulse signal from control circuit is added between A point and the B point, the voltage direction of the former limit winding L p of isolation drive transformer T1 is upper just lower negative, pass through isolated variable, the voltage direction of the secondary winding L s1 of isolation drive transformer T1 is upper just lower negative, the voltage direction of the secondary winding L s2 of isolation drive transformer is upper just bearing down, between C point and D point, export positive pulse signal, keep the reliable conducting of power switch pipe Qsw1, between E point and F point, export undersuing, keep power switch pipe Qsw2 reliable turn-off.
When the negative driving pulse from control circuit is added between A point and the B point, the voltage direction of the former limit winding L p of isolation drive transformer T1 is upper just bearing down, pass through isolated variable, the voltage direction of the secondary winding L s1 of isolation drive transformer T1 is upper just bearing down, the voltage direction of the secondary winding L s2 of isolation drive transformer is upper just lower negative, between C point and D point, export undersuing, keep power switch pipe Q
Sw1 reliable turn-off is exported positive pulse signal between E point and F point, keep power switch pipe Q
Sw2 reliable conductings.
This circuit can solve the abnormal operation that the described traditional isolated drive circuit of Fig. 1 causes because of poor working environment.But because that this circuit by driving the reliable turn-off that the identical undersuing of signal amplitude keeps power switch pipe with positive pulse, therefore causes producing the control circuit power consumption of driving pulse is large, heating is serious.
Summary of the invention
The object of the present invention is to provide a kind of isolated drive circuit, it is large to be used for overcoming the control circuit power consumption, the serious problem of generating heat.
According to an aspect of the present invention, a kind of isolated drive circuit provided by the invention comprises:
Control circuit for generation of drive pulse signal;
Isolation drive transformer with a former limit winding, one or more secondary windings;
The capacitance that connects the former limit winding of described control circuit and described isolation drive transformer;
Described isolated drive circuit also comprises:
Be connected to the driving loop that is used for making the power switch pipe conducting between the secondary winding of described isolation drive transformer and the power switch pipe, bleed-off circuit and the turn-off circuit that power switch pipe is turn-offed.
Described driving loop comprises the driving resistance that is connected with the secondary windings in series of described isolation drive transformer and drives diode.
Further, the anode of described driving diode connects an end of described power switch pipe via described secondary winding, and negative electrode connects the other end of described power switch pipe via described driving resistance.
Further, the anode of described driving diode successively via described driving resistance be connected the secondary winding and connect an end of described power switch pipe, its negative electrode connects the other end of described power switch pipe.
Further, the anode of described driving diode successively via described secondary winding be connected driving resistance and connect an end of described power switch pipe, its negative electrode connects the other end of described power switch pipe.
Described bleed-off circuit comprises:
The P type of releasing switching tube;
Bleeder resistance, an end connects the emitter of the described P type switching tube of releasing, and an end connects an end of power switch pipe;
The diode of releasing, the collector electrode of the described P type switching tube of releasing of its anodic bonding, its negative electrode connects the other end of power switch pipe.
Described turn-off circuit comprises:
Turn-off diode;
The first divider resistance, the one end connects the anode of described shutoff diode via the secondary winding, and its other end connects the base stage of the described P type switching tube of releasing;
The second divider resistance, the one end connects the negative electrode of described shutoff diode, and its other end connects the emitter of the described P type switching tube of releasing via described bleeder resistance;
Wherein, an end of the anodic bonding power switch pipe of described shutoff diode, negative electrode connect the other end of power switch pipe via the second divider resistance.
Described turn-off circuit also comprises:
The release base stage of P type switching tube of the first anti-saturation diode, its anodic bonding, its negative electrode connects the first divider resistance;
The release collector electrode of P type switching tube of the second anti-saturation diode, its anodic bonding, its negative electrode connects the negative electrode of the first anti-saturation diode.
Further, the described P of releasing type switching tube is PNP triode or P type multiple tube.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention distributes by the resistance of the divider resistance of adjusting turn-off circuit, and the power ratio control switching tube keeps the amplitude of negative pressure when turn-offing, thereby controls the power consumption of described control circuit;
2, the present invention has kept the capacitance on former limit, and the former limit of driving transformer winding is resetted with voltage very stably, and the output waveform of isolated drive circuit is without spine and concussion.
3, the present invention can seal in the anti-saturation device in turn-off circuit, namely increases anti-saturation diode, prevents that the described P of releasing type switching tube penetration depth is saturated.
4, the present invention is not limited to the single channel isolation drive, also can be used for the multichannel isolation drive, especially the complementary isolation drive of two-way.
In a word, the present invention had both kept the advantage of traditional isolated drive circuit, had solved again the problem that traditional isolated drive circuit exists.
Description of drawings
Fig. 1 is a kind of traditional isolated drive circuit figure that prior art provides;
Fig. 2 is traditional isolated drive circuit figure of a kind of complementation of providing of prior art;
Fig. 3 is the first connected mode figure in the driving loop that provides of the embodiment of the invention;
Fig. 4 is the second connected mode figure in the driving loop that provides of the embodiment of the invention;
Fig. 5 is the third connected mode figure in the driving loop that provides of the embodiment of the invention;
Fig. 6 is the first connected mode figure of the bleed-off circuit that provides of the embodiment of the invention;
Fig. 7 is the second connected mode figure of the bleed-off circuit that provides of the embodiment of the invention;
Fig. 8 is the connected mode figure of the turn-off circuit that provides of the embodiment of the invention;
Fig. 9 is the connected mode figure of the turn-off circuit of the increase anti-saturation that provides of the embodiment of the invention;
Figure 10 is the structure chart of the single channel isolated drive circuit that provides of the embodiment of the invention;
Figure 11 is the structure chart of the multichannel isolated drive circuit that provides of the embodiment of the invention;
Figure 12 is the structure chart of the complementary isolated drive circuit of the two-way that provides of the embodiment of the invention;
Figure 13 is a kind of isolated drive circuit figure that the embodiment of the invention provides;
Figure 14 is the another kind of isolated drive circuit figure that the embodiment of the invention provides.
Embodiment
To a preferred embodiment of the present invention will be described in detail, should be appreciated that following illustrated preferred embodiment only is used for description and interpretation the present invention, is not limited to the present invention below in conjunction with accompanying drawing.
To the objective of the invention is in order overcoming in the prior art, to drive signal and keep the power switch pipe reliable turn-off by driving the identical negative pulse of signal amplitude with positive pulse, thereby cause the power consumption of control circuit of driving pulse large, the serious problem of generating heat.
A kind of isolated drive circuit provided by the invention comprises:
Produce the control circuit of drive pulse signal;
Isolation drive transformer with a former limit winding, one or more secondary windings;
Be connected in the capacitance between the former limit winding of described control circuit and described isolation drive transformer;
Described isolated drive circuit also comprises:
Be connected to the driving loop that is used for making the power switch pipe conducting between the secondary winding of described isolation drive transformer and the power switch pipe, bleed-off circuit and the turn-off circuit that power switch pipe is turn-offed.
Described driving loop comprises:
The driving resistance that is connected with the secondary windings in series of described isolation drive transformer and driving diode.
Described bleed-off circuit comprises:
The P type of releasing switching tube;
Bleeder resistance, an end connects the emitter of the described P type switching tube of releasing, and an end connects an end of power switch pipe;
The diode of releasing, the collector electrode of the described P type switching tube of releasing of its anodic bonding, its negative electrode connects the other end of power switch pipe.
Described turn-off circuit comprises:
Turn-off diode;
The first divider resistance, the one end connects the anode of described shutoff diode via the secondary winding, and its other end connects the base stage of the described P type switching tube of releasing;
The second divider resistance, the one end connects the negative electrode of described shutoff diode, and its other end connects the emitter of the described P type switching tube of releasing via described bleeder resistance;
Wherein, an end of the anodic bonding power switch pipe of described shutoff diode, negative electrode connect the other end of power switch pipe via the second divider resistance.
Described turn-off circuit also comprises:
The release base stage of P type switching tube of the first anti-saturation diode, its anodic bonding, its negative electrode connects the first divider resistance;
The release collector electrode of P type switching tube of the second anti-saturation diode, its anodic bonding, its negative electrode connects the negative electrode of the first anti-saturation diode.
Further, the described P of releasing type switching tube is PNP triode or P type multiple tube.
Fig. 3 to Fig. 5 has shown the connected mode in the driving loop that the embodiment of the invention provides, and described driving loop is used for making power switch pipe to keep open-minded, is composed in series by driving diode, driving transformer secondary winding and driving resistance.The device in this loop has multiple connected mode, and its structure is come the driving power switching tube with the voltage between C point and the D point shown in solid line part among Fig. 3, Fig. 4, Fig. 5.
As shown in Figure 3, the anode of described driving diode connects the end (D point side) of described power switch pipe via described secondary winding, and negative electrode connects the other end (C point side) of described power switch pipe via described driving resistance.
As shown in Figure 4, the anode of described driving diode successively via described driving resistance be connected the secondary winding and connect the end (D point side) of described power switch pipe, its negative electrode connects the other end (C point side) of described power switch pipe.
As shown in Figure 5, the anode of described driving diode successively via described secondary winding be connected driving resistance and connect the end (D point side) of described power switch pipe, its negative electrode connects the other end (C point side) of described power switch pipe.
Fig. 6 and Fig. 7 have shown the connected mode of the bleed-off circuit that the embodiment of the invention provides, described bleed-off circuit is used for making power switch pipe to turn-off, be composed in series by bleeder resistance, release diode and the P type switching tube of releasing, the device in this loop has multiple connected mode, its structure is come the driving power switching tube with the voltage between C point and the D point shown in solid line part among Fig. 6 and Fig. 7.
As shown in Figure 6, described bleed-off circuit comprises the bleeder resistance that is connected in series successively, release P type switching tube and the diode of releasing.Described bleeder resistance one end connects the emitter of the described P type switching tube of releasing, and an end connects an end (C point side) of power switch pipe.The described diode of releasing, the collector electrode of the described P type switching tube of releasing of its anodic bonding, its negative electrode connects the other end (D point side) of power switch pipe.
Connected mode shown in Figure 5 has been adopted in driving loop shown in Figure 6, and at this moment, the end that described bleeder resistance is connected with power switch pipe also links to each other with the negative electrode that drives diode.
As shown in Figure 7, the link position of bleeder resistance described in the figure is different from Fig. 6, still adopt connected mode shown in Figure 5 as example take driving loop shown in Figure 7, among Fig. 7, the end that described bleeder resistance is connected with the emitter of the described P of releasing type switching tube also links to each other with the negative electrode that drives diode.
Fig. 8 has shown the connected mode of the turn-off circuit that the embodiment of the invention provides, and described turn-off circuit is used for making power switch pipe keep certain negative voltage, guaranteed output switching tube reliable turn-off.Described turn-off circuit is comprised of the first divider resistance, the second divider resistance, bleeder resistance, shutoff diode, the series connection of the P type of releasing switching tube etc., Fig. 8 solid line partly is the structure of described turn-off circuit, comes the driving power switching tube with the voltage between C point and the D point.Wherein:
The first divider resistance, the one end connects the anode of described shutoff diode via the secondary winding, and its other end connects the base stage of the described P type switching tube of releasing;
The second divider resistance, the one end connects the negative electrode of described shutoff diode, and its other end connects the emitter of the described P type switching tube of releasing via described bleeder resistance;
Turn-off diode, an end of its anodic bonding power switch pipe, negative electrode connect the other end of power switch pipe via the second divider resistance.
Go deep into saturated, shown in Figure 8 turn-off circuit and also can seal in the anti-saturation device in order to prevent that the described P of releasing type switching tube from entering, as shown in Figure 9, in turn-off circuit shown in Figure 8, increased anti-saturation diode.Wherein:
The release base stage of P type switching tube of the first anti-saturation diode, its anodic bonding, its negative electrode connects the first divider resistance;
The release collector electrode of P type switching tube of the second anti-saturation diode, its anodic bonding, its negative electrode connects the negative electrode of the first anti-saturation diode.
By technical solutions according to the invention, the present invention is applicable to single channel isolated drive circuit as shown in figure 10, multichannel isolated drive circuit shown in Figure 11, the complementary isolated drive circuit of two-way especially shown in Figure 12.That is to say that the isolation drive transformer can comprise one or more secondary windings, its each secondary winding connects a secondary circuit, forms and drives loop, bleed-off circuit and turn-off circuit.
Figure 13 has shown a kind of isolated drive circuit figure that the embodiment of the invention provides, and as shown in figure 13, present embodiment is a kind of single channel isolated drive circuit.Wherein, drive the loop and adopted connected mode shown in Figure 3, comprise driving diode D1 and driving resistance R 1; Bleed-off circuit has adopted connected mode shown in Figure 6, comprises bleeder resistance R3, the P type of releasing switching tube Q1, diode D2 releases; Turn-off circuit has adopted connected mode shown in Figure 8, comprises turn-offing diode D3, the second divider resistance R4, the first divider resistance R2.Its operation principle is as follows:
When the positive drive pulse signal from control circuit was added between A point and the B point, by the isolated variable of isolation drive transformer T1, the voltage direction of secondary winding L s was upper just lower negative.Secondary current namely drives the loop by driving diode D1 and driving resistance R 1, produces certain driving voltage, driving power switching tube between C point and D point.
When closing from the positive drive pulse signal of control circuit, namely enter Dead Time, isolation drive transformer T1 winding two ends do not have voltage.Voltage on the power switch pipe, i.e. voltage between C point and the D point, by bleeder resistance R3, the P type of releasing switching tube Q1, the diode D2 that releases, i.e. bleed-off circuit, rapidly discharge.
When the negative drive pulse signal from control circuit was added between A point and the B point, by the isolated variable of isolation drive transformer T1, the voltage direction of secondary winding L s was upper just bearing down.Secondary current is by turn-offing diode D3, the second divider resistance R4, bleeder resistance R3, the P type of releasing switching tube Q1, the first divider resistance R2, i.e. turn-off circuit, and the negative voltage of the certain amplitude of generation is guaranteed the power switch pipe reliable turn-off between C point and D point.
Further, distribute by the resistance of regulating the first divider resistance R2 and the second divider resistance R4, can be controlled at the amplitude of the negative voltage between C point and the D point, thus the power consumption of the control circuit of control driving pulse.
Figure 14 has shown the another kind of isolated drive circuit figure that the embodiment of the invention provides, and as shown in figure 14, present embodiment is a kind of dual path isolation complementary drive circuit, and described isolation drive transformer T1 has a former limit winding L p and two secondary winding L s1, Ls2.Wherein, drive the loop and adopted connected mode shown in Figure 5, the driving loop of secondary winding L s1 side comprises driving diode D1, drives resistance R 1, and the driving loop of secondary winding L s2 side comprises driving diode D4, drives resistance R 5; Bleed-off circuit has adopted connected mode shown in Figure 6, the bleed-off circuit of secondary winding L s1 side comprises bleeder resistance R3, the P type of releasing switching tube Q1, the diode D2 that releases, and the bleed-off circuit of secondary winding L s2 side comprises bleeder resistance R7, the P type of releasing switching tube Q2, diode D5 releases; Turn-off circuit has adopted connected mode shown in Figure 8, the turn-off circuit of secondary winding L s1 side comprises shutoff diode D3, the second divider resistance R4, the first divider resistance R2, and the turn-off circuit of secondary winding L s2 side comprises shutoff diode D6, the second divider resistance R8, the first divider resistance R6.Its operation principle is as follows:
When the positive drive pulse signal from control circuit is added between A point and the B point, by the isolated variable of isolation drive transformer T1, the voltage direction of secondary winding L s1 is upper just lower negative, and secondary current is by driving the loop, between C point and D point, produce driving voltage, come the driving power switching tube.The voltage direction of secondary winding L s2 is upper just bearing down.Secondary current produces certain negative voltage by turn-off circuit between E point and F point, guarantee driving power switching tube reliable turn-off.
When closing from the positive drive pulse signal of control circuit, namely enter Dead Time, transformer T1 winding two ends do not have voltage.Voltage between C point and the D point discharges rapidly by bleed-off circuit, and the voltage between E point and the F point turns back to zero volt by turn-off circuit.
When the negative drive pulse signal from control circuit is added between A point and the B point, isolated variable by transformer T1, the voltage direction of secondary winding L s1 is upper just bearing down, secondary current passes through turn-off circuit, between C point and D point, produce certain negative voltage, guarantee the power switch pipe reliable turn-off.The voltage direction of secondary winding L s2 is upper just lower negative, and secondary current produces driving voltage by driving the loop between E point and F point, come the driving power switching tube.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of making according to the principle of the invention all should be understood to fall into protection scope of the present invention.
Claims (10)
1. isolated drive circuit comprises:
Control circuit for generation of drive pulse signal;
Isolation drive transformer with a former limit winding, one or more secondary windings;
The capacitance that connects the former limit winding of described control circuit and described isolation drive transformer;
It is characterized in that, also comprise:
Be connected to the driving loop that is used for making the power switch pipe conducting between the secondary winding of described isolation drive transformer and the power switch pipe, bleed-off circuit and the turn-off circuit that power switch pipe is turn-offed.
2. circuit according to claim 1 is characterized in that, described driving loop comprises the driving resistance that is connected with the secondary windings in series of described isolation drive transformer and drives diode.
3. circuit according to claim 2 is characterized in that, the anode of described driving diode connects an end of described power switch pipe via described secondary winding, and negative electrode connects the other end of described power switch pipe via described driving resistance.
4. circuit according to claim 2 is characterized in that, the anode of described driving diode successively via described driving resistance be connected the secondary winding and connect an end of described power switch pipe, its negative electrode connects the other end of described power switch pipe.
5. circuit according to claim 2 is characterized in that, the anode of described driving diode successively via described secondary winding be connected driving resistance and connect an end of described power switch pipe, its negative electrode connects the other end of described power switch pipe.
6. the described circuit of any one is characterized in that according to claim 1-5, and described bleed-off circuit comprises:
The P type of releasing switching tube;
Bleeder resistance, an end connects the emitter of the described P type switching tube of releasing, and an end connects an end of power switch pipe;
The diode of releasing, the collector electrode of the described P type switching tube of releasing of its anodic bonding, its negative electrode connects the other end of power switch pipe.
7. circuit according to claim 6 is characterized in that, the described P of releasing type switching tube is PNP triode or P type multiple tube.
8. circuit according to claim 6 is characterized in that, described turn-off circuit comprises:
Turn-off diode;
The first divider resistance, the one end connects the anode of described shutoff diode via the secondary winding, and its other end connects the base stage of the described P type switching tube of releasing;
The second divider resistance, the one end connects the negative electrode of described shutoff diode, and its other end connects the emitter of the described P type switching tube of releasing via described bleeder resistance;
Wherein, an end of the anodic bonding power switch pipe of described shutoff diode, negative electrode connect the other end of power switch pipe via the second divider resistance.
9. circuit according to claim 8 is characterized in that, described turn-off circuit also comprises:
The release base stage of P type switching tube of the first anti-saturation diode, its anodic bonding, its negative electrode connects the first divider resistance;
The release collector electrode of P type switching tube of the second anti-saturation diode, its anodic bonding, its negative electrode connects the negative electrode of the first anti-saturation diode.
10. circuit according to claim 9 is characterized in that, the described P of releasing type switching tube is PNP triode or P type multiple tube.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325112.0A CN103066814B (en) | 2011-10-24 | 2011-10-24 | A kind of isolated drive circuit |
| PCT/CN2012/076843 WO2013060145A1 (en) | 2011-10-24 | 2012-06-13 | An isolated driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110325112.0A CN103066814B (en) | 2011-10-24 | 2011-10-24 | A kind of isolated drive circuit |
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| CN103066814A true CN103066814A (en) | 2013-04-24 |
| CN103066814B CN103066814B (en) | 2016-07-27 |
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| CN201110325112.0A Active CN103066814B (en) | 2011-10-24 | 2011-10-24 | A kind of isolated drive circuit |
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| CN109742953A (en) * | 2018-12-27 | 2019-05-10 | 广州金升阳科技有限公司 | A kind of magnetic isolation drive circuit |
| CN110299826A (en) * | 2019-07-01 | 2019-10-01 | 上海空间电源研究所 | A kind of spacecraft highly reliable isolated drive circuit of suitable wide duty ratio |
| CN112564458A (en) * | 2019-09-10 | 2021-03-26 | 苏州捷芯威半导体有限公司 | Isolation driving circuit |
| WO2024021762A1 (en) * | 2022-07-27 | 2024-02-01 | 华为技术有限公司 | Drive circuit, control method, power supply module, and electronic device |
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| WO2014059620A1 (en) * | 2012-10-17 | 2014-04-24 | 深圳市安能能源技术有限公司 | Isolated driving circuit |
| CN104348336B (en) * | 2013-08-09 | 2018-08-24 | 深圳市金威源科技股份有限公司 | A kind of full-bridge pair side rectifier control circuit |
| CN104348336A (en) * | 2013-08-09 | 2015-02-11 | 深圳市金威源科技股份有限公司 | Full-bridge secondary side rectification control circuit |
| CN103595226B (en) * | 2013-10-30 | 2016-03-16 | 安徽动力源科技有限公司 | Transformer isolation symmetrical complement drive circuit |
| CN103595226A (en) * | 2013-10-30 | 2014-02-19 | 安徽动力源科技有限公司 | Isolation symmetrical complementation drive circuit of transformer |
| CN103762848A (en) * | 2013-12-31 | 2014-04-30 | 江苏嘉钰新能源技术有限公司 | Drive circuit for switch type double-end direct-current converter |
| CN103780108A (en) * | 2013-12-31 | 2014-05-07 | 江苏嘉钰新能源技术有限公司 | Switching power supply driving circuit and dead time adjusting method thereof |
| CN104269997B (en) * | 2014-10-11 | 2017-09-26 | 南京航空航天大学 | A kind of adjustable transformer isolation complementary drive circuit in dead band |
| CN105356728A (en) * | 2015-12-01 | 2016-02-24 | 广州金升阳科技有限公司 | Isolated drive circuit |
| CN105743331A (en) * | 2016-04-14 | 2016-07-06 | 西安许继电力电子技术有限公司 | Switching tube driving circuit for dual-tube flyback topological switch power supply |
| CN107124090B (en) * | 2017-05-27 | 2020-03-20 | 深圳航天科技创新研究院 | Fast driving circuit applied to high-voltage solid-state switch and high-voltage solid-state switch |
| CN107124090A (en) * | 2017-05-27 | 2017-09-01 | 深圳航天科技创新研究院 | Applied to the fast drive circuit in high-pressure solid-state switch, high-pressure solid-state switch |
| CN108023467A (en) * | 2017-12-04 | 2018-05-11 | 山东航天电子技术研究所 | A kind of two-way magnetization transformer isolation drive circuit |
| CN109742952A (en) * | 2018-12-27 | 2019-05-10 | 广州金升阳科技有限公司 | A kind of magnetic isolation drive circuit |
| CN109742953A (en) * | 2018-12-27 | 2019-05-10 | 广州金升阳科技有限公司 | A kind of magnetic isolation drive circuit |
| CN110299826A (en) * | 2019-07-01 | 2019-10-01 | 上海空间电源研究所 | A kind of spacecraft highly reliable isolated drive circuit of suitable wide duty ratio |
| CN110299826B (en) * | 2019-07-01 | 2020-11-20 | 上海空间电源研究所 | Reliable isolation driving circuit suitable for wide duty ratio for spacecraft |
| CN112564458A (en) * | 2019-09-10 | 2021-03-26 | 苏州捷芯威半导体有限公司 | Isolation driving circuit |
| CN112564458B (en) * | 2019-09-10 | 2021-12-31 | 苏州捷芯威半导体有限公司 | Isolation driving circuit |
| WO2024021762A1 (en) * | 2022-07-27 | 2024-02-01 | 华为技术有限公司 | Drive circuit, control method, power supply module, and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103066814B (en) | 2016-07-27 |
| WO2013060145A1 (en) | 2013-05-02 |
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