CN103326701B - High-efficiency N type switch tube isolation drive device and isolation drive method - Google Patents
High-efficiency N type switch tube isolation drive device and isolation drive method Download PDFInfo
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- CN103326701B CN103326701B CN201310290537.1A CN201310290537A CN103326701B CN 103326701 B CN103326701 B CN 103326701B CN 201310290537 A CN201310290537 A CN 201310290537A CN 103326701 B CN103326701 B CN 103326701B
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Abstract
The present invention relates to a kind of High-efficiency N type switch tube isolation drive device and isolation drive method, isolating transformer accept pulse-width signal in PWM pulse-width modulation circuit and output HIGH voltage or low-voltage.Isolating transformer output voltage is isolated and output HIGH voltage by the first isolating diode and the second isolating diode respectively.Electric capacity output voltage is isolated by the 3rd isolating diode.First resistance consumption isolating transformer leakage inductance energy.Second resistance is switching tube junction capacity bleeder resistance.3rd resistance is audion current-limiting resistance.Audion, after switching tube turns off, accepts the first signal and turns on, with switching tube junction capacity voltage of releasing；And after switching tube turns on, accept secondary signal and turn off.Electric capacity is after switching tube turns off, it is provided that voltage drives triode ON.The High-efficiency N type switch tube isolation drive device of the present invention is simple, reliable, can high efficiency drive switching tube.
Description
Technical field
The present invention relates to a kind of High-efficiency N type switch tube isolation drive device and isolation drive method, to reduce the loss of N type switch tube and then to improve the efficiency of charge-discharge circuit, improve the utilization rate of the satellite energy.
Background technology
Satellite proposes the highest requirement to performance, the weight and volume of power subsystem.The indexs such as the performance ratio of raising power subsystem and the ratio of performance to price, have very important meaning to increasing payload, raising satellite performance and benefit, but existing switching tube isolation drive device are not met by the requirement of higher performance.
Summary of the invention
It is an object of the invention to provide a kind of High-efficiency N type switch tube isolation drive device and isolation drive method, it can reduce the loss of N type switch tube and then improve the efficiency of charge-discharge circuit, improves the utilization rate of the satellite energy.
In order to achieve the above object, one technical scheme of the present invention is to provide a kind of High-efficiency N type switch tube isolation drive device, being connected between PWM pulse-width modulation circuit and switching tube, it includes isolating transformer, the first isolating diode, the second isolating diode, the 3rd isolating diode, the first resistance, the second resistance, the 3rd resistance, audion, electric capacity；
Wherein, described isolating transformer accepts the pulse-width signal in PWM pulse-width modulation circuit and exports high level or low level, so that switching tube turns on via the high level exported after described first isolating diode or the isolation of the second isolating diode by accepting described isolating transformer, or turn off by accepting the low level of this isolating transformer output；
Described audion is after switching tube turns off, and accepts the first signal and turns on, and with switching tube junction capacity voltage of releasing to the second resistance, described second resistance is switching tube junction capacity bleeder resistance；Further, described audion is after switching tube turns on, and accepts secondary signal and turns off, to terminate the work of whole device；
Described electric capacity is after switching tube turns off, it is provided that voltage is as the first signal driving described triode ON；Described 3rd resistance is audion current-limiting resistance；In described electric capacity after discharge off, provide the secondary signal turned it off to described audion；
The output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of described isolating transformer is by described first resistance consumption.
As a kind of improvement project, when described isolating transformer input Same Name of Ends is high level, outfan Same Name of Ends is high level.
As a kind of improvement project, when described isolating transformer input different name end is high level, outfan different name end is high level.
As a kind of improvement project, during described isolating transformer input Same Name of Ends output high level, via the first isolating diode output high level；During described isolating transformer input different name end output high level, via the second isolating diode output high level.
As a kind of improvement project, when described isolating transformer input Same Name of Ends and different name end are low level, via the first isolating diode and the second isolating diode all output low levels simultaneously.
As a kind of improvement project, the outfan of described first isolating diode and the second isolating diode is connected to a common port, when the outfan of any one is high level among described first isolating diode and the second isolating diode, export high level from common port；When both outfans are all low level, from common port output low level.
As a kind of improvement project, described first signal is high level signal, and described secondary signal is low level signal.
As a kind of improvement project, described switching tube is N-MOS type switching tube.
In a concrete application example, the present invention provides a kind of High-efficiency N type switch tube isolation drive device, and it includes isolating transformer, the first isolating diode, the second isolating diode, the 3rd isolating diode, the first resistance, the second resistance, the 3rd resistance, audion, electric capacity；
Wherein, the Same Name of Ends of described isolating transformer input and different name end, correspondence is connected with the first outfan and second outfan of PWM pulse-width modulation circuit, obtain high level or low level to accept pulse-width signal at this isolating transformer outfan to export to switching tube, drive this switching tube on or off with correspondence；
Described first isolating diode, it is connected between the grid of the Same Name of Ends of described isolating transformer outfan the first winding and the switching tube of N-type, it is achieved the high level to the isolation of described isolating transformer output voltage and turned it on to the output of described switching tube or the low level turned it off；
Described second isolating diode, it is connected between different name end and the grid of described switching tube of described isolating transformer outfan the second winding, it is achieved the high level to the isolation of described isolating transformer output voltage and turned it on to the output of described switching tube or the low level turned it off；
The source electrode of described switching tube, via described electric capacity, described 3rd isolating diode, described 3rd resistance, is connected to the base stage of described audion；The emitter stage of described audion is connected between described electric capacity and the 3rd isolating diode；The colelctor electrode of described audion is connected to the grid of described switching tube；Thus at the shutdown moment of described switching tube, by this switching tube grid and source electrode with junction capacity be that described electric capacity is charged；And after described switching tube turns off, described electric capacity the voltage provided drives described triode ON, formed and make the junction capacity voltage acceleration of described switching tube be carried out the loop released by described audion, the 3rd isolating diode and the second resistance；
Described first resistance is connected between described first isolating diode and the negative electrode of the second isolating diode and described first winding different name end and the common port of the second Motor Winding Same Name of Ends；And, the negative electrode of described 3rd isolating diode is also connected to described first winding different name end and the common port of the second Motor Winding Same Name of Ends, thus when described isolating transformer outfan is turned low level by high level, the output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of this isolating transformer can be consumed by first resistance.
Another technical scheme of the present invention is to provide a kind of High-efficiency N type switch tube isolation drive method:
By the first outfan and second outfan of a PWM pulse-width modulation circuit, export the symmetrical square wave with Dead Time as pulse-width signal；
When the Same Name of Ends of one isolating transformer input accepts the high level of described first outfan, Same Name of Ends at this isolating transformer outfan exports high level to the switching tube of a N-MOS type after a first isolating diode isolation, so that the conducting of this switching tube；
Or, when the different name of described isolating transformer input terminates the high level by described second outfan, the different name end at this isolating transformer outfan exports high level extremely described switching tube after a second isolating diode isolation, so that the conducting of this switching tube；
During the low level that the described isolating transformer input described first input end of acceptance and the second input export simultaneously, at the outfan of this isolating transformer via the first isolating diode and the second isolating diode to described switching tube output low level, so that this switching tube turns off；
At the shutdown moment of described switching tube, by this switching tube grid and source electrode with junction capacity be that an electric capacity is charged；Then after described switching tube turns off, described electric capacity the voltage provided, drive a triode ON by the 3rd current-limiting resistance；After described triode ON so that the junction capacity voltage of described switching tube accelerates to be released by described audion, the 3rd isolating diode and second resistance；
Further, when described isolating transformer outfan is turned low level by high level, the output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of this isolating transformer can be consumed by first resistance.
High-efficiency N type switch tube isolation drive device of the present invention and isolation drive method, it provides the benefit that, can reduce the loss of N type switch tube and then improve the efficiency of charge-discharge circuit, improving the utilization rate of the satellite energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of High-efficiency N type switch tube isolation drive device of the present invention.
Detailed description of the invention
By describing the technology contents of the present invention, structural feature in detail, being reached purpose and effect, below in conjunction with embodiment and coordinate accompanying drawing to be described in detail.
Refer to Fig. 1, the present invention provides a kind of High-efficiency N type switch tube isolation drive device, including isolating transformer T1, the first isolating diode D1, the second isolating diode D2, the 3rd isolating diode D3, the first resistance R1, the second resistance R2, the 3rd resistance R3, audion Q1, electric capacity C1.The concrete annexation of above-mentioned device refer to, shown in Fig. 1, the most no longer be described in detail.
Wherein, the pulse-width signal during isolating transformer T1 accepts PWM pulse-width modulation circuit 1 and output HIGH voltage or low-voltage.Isolating transformer T1 Same Name of Ends output voltage is isolated and output HIGH voltage by the first isolating diode D1.Isolating transformer T1 different name end output voltage is isolated and output HIGH voltage by the second isolating diode D2.Electric capacity C1 output voltage is isolated by the 3rd isolating diode D3, and makes the first resistance R1 consume isolating transformer T1 leakage inductance energy.Second resistance R2 is switching tube MOS junction capacity bleeder resistance.3rd resistance R3 is audion Q1 current-limiting resistance.Audion Q1 is after switching tube MOS turns off, and accepts the first signal and turns on, with switching tube MOS junction capacity voltage of releasing；And after switching tube MOS turns on, accept secondary signal and turn off.Electric capacity C1 is after switching tube MOS turns off, it is provided that voltage drives audion Q1 to turn on.
PWM pulse-width modulation circuit 1 has two outfans 11 and 14, and in the cycle, two outfans export the symmetrical square wave with Dead Time, during i.e. 11 ends output high level, and 14 end output low levels.When 11 ends export high level, isolating transformer T1 input Same Name of Ends is high level, and the Same Name of Ends of isolating transformer T1 outfan the first winding is also high level, and the first isolating diode D1 exports high level；When 14 ends export high level, isolating transformer T1 input different name end is high level, and the different name end of isolating transformer T1 outfan the second winding is also high level, and the second isolating diode D2 exports high level；When 11 ends and 14 ends output low level simultaneously, isolating transformer T1 outfan is also low level, the first isolating diode D1 and second isolating diode D2 all output low levels.During isolating transformer T1 outfan output high level, switching tube MOS turns on；During isolating transformer T1 outfan output low level, switching tube MOS turns off.
When isolating transformer T1 outfan is turned low level by high level, isolating transformer T1 leakage inductance energy is consumed by the first resistance R1.Simultaneously, the G end of switching tube MOS and S end are with junction capacity, switching tube MOS shutdown moment, junction capacity is that electric capacity C1 is charged, electric capacity C1 drives audion Q1 to turn on by current-limiting resistance, after audion Q1 conducting, the junction capacity of switching tube MOS is accelerated to be released by audion Q1, the 3rd isolating diode D3, the second resistance R2.
The invention has the beneficial effects as follows, invention High-efficiency N type switch tube isolation drive device.It can reduce the loss of N type switch tube and then improve the efficiency of charge-discharge circuit, improves the utilization rate of the satellite energy.
Only go up described, it is only presently preferred embodiments of the present invention, when not limiting, with this, the scope that the present invention implements, therefore the change of numerical value or the displacement of equivalent elements such as, or the impartial change made according to scope of the present invention patent with modify, all should still belong to the category that patent of the present invention contains.
Claims (10)
1. a High-efficiency N type switch tube isolation drive device, it is connected between PWM pulse-width modulation circuit and switching tube, it is characterised in that: include isolating transformer, the first isolating diode, the second isolating diode, the 3rd isolating diode, the first resistance, the second resistance, the 3rd resistance, audion, electric capacity；
Wherein, the Same Name of Ends of described isolating transformer input and different name end, correspondence is connected with the first outfan and second outfan of PWM pulse-width modulation circuit；Described first isolating diode, is connected between Same Name of Ends and the grid of switching tube of described isolating transformer outfan the first winding；Described second isolating diode, is connected between different name end and the grid of described switching tube of described isolating transformer outfan the second winding；
The source electrode of described switching tube, via described electric capacity, described 3rd isolating diode, described 3rd resistance, is connected to the base stage of described audion；The emitter stage of described audion is connected between described electric capacity and the 3rd isolating diode；The colelctor electrode of described audion is connected to the grid of described switching tube；Described first resistance is connected between described first isolating diode and the negative electrode of the second isolating diode and described first winding different name end and the common port of the second Motor Winding Same Name of Ends；Further, the negative electrode of described 3rd isolating diode is also connected to described first winding different name end and the common port of the second Motor Winding Same Name of Ends；
Described isolating transformer accepts the pulse-width signal in PWM pulse-width modulation circuit and exports high level or low level, so that switching tube turns on via the high level exported after described first isolating diode or the isolation of the second isolating diode by accepting described isolating transformer, or turn off by accepting the low level of this isolating transformer output；
Described audion is after switching tube turns off, and accepts the first signal and turns on, and with switching tube junction capacity voltage of releasing to the second resistance, described second resistance is switching tube junction capacity bleeder resistance；Further, described audion is after switching tube turns on, and accepts secondary signal and turns off, to terminate the work of whole device；
After switching tube turns off, described electric capacity provides the voltage the first signal as driving described triode ON；Described 3rd resistance is audion current-limiting resistance；After described electric capacity discharge off, this electric capacity provides the secondary signal turned it off to described audion；
The output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of described isolating transformer is by described first resistance consumption.
2. High-efficiency N type switch tube isolation drive device as claimed in claim 1, it is characterised in that: when described isolating transformer input Same Name of Ends is high level, outfan Same Name of Ends is high level.
3. High-efficiency N type switch tube isolation drive device as claimed in claim 1, it is characterised in that: when described isolating transformer input different name end is high level, outfan different name end is high level.
4. the High-efficiency N type switch tube isolation drive device as described in claim 1 or 2 or 3, it is characterised in that: during described isolating transformer input Same Name of Ends output high level, the first isolating diode output high level；During described isolating transformer input different name end output high level, the second isolating diode output high level.
5. High-efficiency N type switch tube isolation drive device as claimed in claim 4, it is characterized in that: when described isolating transformer input Same Name of Ends and different name end are simultaneously for low level, the Same Name of Ends of described isolating transformer outfan the first winding is via the first isolating diode output low level, and the different name end of described isolating transformer outfan the second winding is via the second isolating diode output low level.
6. High-efficiency N type switch tube isolation drive device as claimed in claim 1, it is characterized in that: the outfan of described first isolating diode and the second isolating diode is connected to a common port, when the outfan of any one is high level among described first isolating diode and the second isolating diode, export high level from common port；When both outfans are all low level, from common port output low level.
7. High-efficiency N type switch tube isolation drive device as claimed in claim 1, it is characterised in that: described first signal is high level signal, and described secondary signal is low level signal.
8. High-efficiency N type switch tube isolation drive device as claimed in claim 1, it is characterised in that: described switching tube is N-MOS type switching tube.
9. a High-efficiency N type switch tube isolation drive device, it is characterised in that: include isolating transformer, the first isolating diode, the second isolating diode, the 3rd isolating diode, the first resistance, the second resistance, the 3rd resistance, audion, electric capacity；
Wherein, the Same Name of Ends of described isolating transformer input and different name end, correspondence is connected with the first outfan and second outfan of PWM pulse-width modulation circuit, obtain high level or low level to accept pulse-width signal at this isolating transformer outfan to export to switching tube, drive this switching tube on or off with correspondence；
Described first isolating diode, it is connected between the grid of the Same Name of Ends of described isolating transformer outfan the first winding and the switching tube of N-type, it is achieved the high level to the isolation of described isolating transformer output voltage and turned it on to the output of described switching tube or the low level turned it off；
Described second isolating diode, it is connected between different name end and the grid of described switching tube of described isolating transformer outfan the second winding, it is achieved the high level to the isolation of described isolating transformer output voltage and turned it on to the output of described switching tube or the low level turned it off；
The source electrode of described switching tube, via described electric capacity, described 3rd isolating diode, described 3rd resistance, is connected to the base stage of described audion；The emitter stage of described audion is connected between described electric capacity and the 3rd isolating diode；The colelctor electrode of described audion is connected to the grid of described switching tube；Thus at the shutdown moment of described switching tube, by this switching tube grid and source electrode with junction capacity be that described electric capacity is charged；And after described switching tube turns off, described electric capacity the voltage provided drives described triode ON, formed and make the junction capacity voltage acceleration of described switching tube be carried out the loop released by described audion, the 3rd isolating diode and the second resistance；
Described first resistance is connected between described first isolating diode and the negative electrode of the second isolating diode and described first winding different name end and the common port of the second Motor Winding Same Name of Ends；And, the negative electrode of described 3rd isolating diode is also connected to described first winding different name end and the common port of the second Motor Winding Same Name of Ends, thus when described isolating transformer outfan is turned low level by high level, the output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of this isolating transformer can be consumed by first resistance.
10. a High-efficiency N type switch tube isolation drive method, it is characterised in that:
By the first outfan and second outfan of a PWM pulse-width modulation circuit, export the symmetrical square wave with Dead Time as pulse-width signal；
When the Same Name of Ends of one isolating transformer input is connected with described first outfan and accepts the high level of described first outfan, Same Name of Ends at this isolating transformer outfan exports high level to the switching tube of a N-MOS type after a first isolating diode isolation, so that the conducting of this switching tube；Described first isolating diode is connected between Same Name of Ends and the grid of switching tube of described isolating transformer outfan the first winding；
Or, when the different name end of described isolating transformer input is connected with described second outfan and accepts the high level of described second outfan, different name end at this isolating transformer outfan exports high level extremely described switching tube after a second isolating diode isolation, so that the conducting of this switching tube；Described second isolating diode is connected between different name end and the grid of described switching tube of described isolating transformer outfan the second winding；
During the low level that the described isolating transformer input described first input end of acceptance and the second input export simultaneously, at the outfan of this isolating transformer via the first isolating diode and the second isolating diode to described switching tube output low level, so that this switching tube turns off；
At the shutdown moment of described switching tube, by this switching tube grid and source electrode with junction capacity be that an electric capacity is charged；Then after described switching tube turns off, described electric capacity the voltage provided, drive a triode ON by the 3rd current-limiting resistance；After described triode ON so that the junction capacity voltage of described switching tube accelerates to be released by described audion, the 3rd isolating diode and second resistance；The source electrode of described switching tube, via described electric capacity, described 3rd isolating diode, described 3rd current-limiting resistance, is connected to the base stage of described audion；The emitter stage of described audion is connected between described electric capacity and the 3rd isolating diode；The colelctor electrode of described audion is connected to the grid of described switching tube；
Further, when described isolating transformer outfan is turned low level by high level, the output voltage of described electric capacity is isolated by described 3rd isolating diode, so that the leakage inductance energy of this isolating transformer can be consumed by first resistance；Described first resistance is connected between described first isolating diode and the negative electrode of the second isolating diode and described first winding different name end and the common port of the second Motor Winding Same Name of Ends；Further, the negative electrode of described 3rd isolating diode is also connected to described first winding different name end and the common port of the second Motor Winding Same Name of Ends.
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| CN201310290537.1A CN103326701B (en) | 2013-07-11 | 2013-07-11 | High-efficiency N type switch tube isolation drive device and isolation drive method |
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| CN201310290537.1A CN103326701B (en) | 2013-07-11 | 2013-07-11 | High-efficiency N type switch tube isolation drive device and isolation drive method |
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| CN105591638B (en) * | 2016-03-16 | 2018-04-10 | 阳光电源股份有限公司 | A kind of switch tube driving circuit |
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| CN102594101A (en) * | 2012-02-16 | 2012-07-18 | 江苏大学 | Isolated rapid turn-off metal oxide field effect transistor (MOFET) driving circuit |
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| US20050162870A1 (en) * | 2004-01-23 | 2005-07-28 | Hirst B. M. | Power converter |
| CN2792013Y (en) * | 2004-12-03 | 2006-06-28 | 深圳市核达中远通电源技术有限公司 | Active clamping drive circuit and its back power transistor protective circuit |
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