CN204425301U - A kind of drive circuit of servo-driver - Google Patents
A kind of drive circuit of servo-driver Download PDFInfo
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- CN204425301U CN204425301U CN201520208965.XU CN201520208965U CN204425301U CN 204425301 U CN204425301 U CN 204425301U CN 201520208965 U CN201520208965 U CN 201520208965U CN 204425301 U CN204425301 U CN 204425301U
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- triode
- power supply
- collector electrode
- cathode power
- emitter
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Abstract
The utility model discloses a kind of drive circuit of servo-driver, be connected with igbt, comprise optical coupler, the first to the 3rd triode, cathode power supply and negative power supply, the output of described optical coupler is connected with the base stage of the first triode, cathode power supply, the collector electrode of described first triode is connected with cathode power supply, and its emitter is connected with negative power supply; The base stage of described second triode is connected with the collector electrode of the first triode, and its collector electrode is connected with cathode power supply, and its emitter is connected with the collector electrode of the 3rd triode; The base stage of described 3rd triode is connected with the collector electrode of the first triode, and its emitter is connected with negative power supply; The emitter of described second triode, the collector electrode of the 3rd triode are all connected with the source electrode of igbt.The utility model controls the conducting of optical coupler by extraneous control signal, then is coordinated with three triodes by cathode power supply, negative power supply, and then realized fast conducting or the shutoff of IGBT.
Description
Technical field
The utility model relates to servo-driver technical field, more particularly, and particularly a kind of drive circuit of servo-driver.
Background technology
Along with the development of power electronic technology, microelectric technique and modern control theory, servo-driver is widely used in industry-by-industry.In servo-driver, IGBT inverter circuit is one of important circuit; IGBT module in IGBT inverter circuit is also referred to as igbt, be compounded with the advantage of power field effect pipe and power transistor and a kind of NEW TYPE OF COMPOSITE device produced, the advantage of power field effect pipe and power transistor rolls into one by it, both had that input impedance is high, operating rate be fast, Heat stability is good and the simple advantage of drive circuit, there is again low, the withstand voltage height of on state voltage and bear the advantages such as electric current is large, therefore applying more extensive.And how to design a kind of can in fast driving servo-driver IGBT conducting and one of direction that the simple drive circuit of structure is those skilled in the art to be studied.
Utility model content
The purpose of this utility model be to provide a kind of structure simple, can the drive circuit of the servo-driver of IGBT turn-on and turn-off in fast driving servo-driver.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of drive circuit of servo-driver, be connected with igbt, comprise optical coupler, the first to the 3rd triode, cathode power supply and negative power supply, the output of described optical coupler is connected with the base stage of the first triode, cathode power supply, the collector electrode of described first triode is connected with cathode power supply, and its emitter is connected with negative power supply; The base stage of described second triode is connected with the collector electrode of the first triode, and its collector electrode is connected with cathode power supply, and its emitter is connected with the collector electrode of the 3rd triode; The base stage of described 3rd triode is connected with the collector electrode of the first triode, and its emitter is connected with negative power supply; The emitter of described second triode, the collector electrode of the 3rd triode are all connected with the source electrode of igbt.
Preferably, also comprise the first resistance be connected with the input of optical coupler, the second resistance be connected with the base stage of the first triode, be connected to the 3rd resistance between the output of optical coupler and cathode power supply, and be connected to the 4th resistance between the collector electrode of the first triode and cathode power supply.
Preferably, also comprise and be connected in the first electric capacity on cathode power supply and the second electric capacity in parallel, and the 3rd electric capacity be connected in parallel on negative power supply and the 4th electric capacity.
Preferably, the voltage stabilizing didoe be connected between the source electrode of igbt and grid is also comprised.
Compared with prior art, the utility model has the advantage of: the utility model controls the conducting of optical coupler by extraneous control signal, then coordinate with three triodes by cathode power supply, negative power supply, and then realize fast conducting or the shutoff of IGBT.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the drive circuit of servo-driver described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection range of the present utility model.
Consult shown in Fig. 1, the utility model provides a kind of drive circuit of servo-driver, be connected with insulated gate bipolar transistor IGBT, comprise optical coupler VL, the first to the 3rd triode Q1-Q3, cathode power supply V+ and negative power supply V-, the output of described optical coupler VL is connected with the base stage of the first triode Q1, cathode power supply V+, and the collector electrode of described first triode Q1 is connected with cathode power supply V+, and its emitter is connected with negative power supply V-; The base stage of described second triode Q2 is connected with the collector electrode of the first triode Q1, and its collector electrode is connected with cathode power supply V+, and its emitter is connected with the collector electrode of the 3rd triode Q3; The base stage of described 3rd triode Q3 is connected with the collector electrode of the first triode Q1, and its emitter is connected with negative power supply V-; The emitter of described second triode Q2, the collector electrode of the 3rd triode Q3 are all connected with the source electrode of insulated gate bipolar transistor IGBT.
The utility model also comprises the first resistance R1 be connected with the input of optical coupler VL, the the second resistance R2 be connected with the base stage of the first triode Q1, be connected to the 3rd resistance R3 between the output of optical coupler VL and cathode power supply V+, and be connected to the 4th resistance R4 between the collector electrode of the first triode Q1 and cathode power supply V+.
The utility model also comprises and is connected in the first electric capacity C1 on cathode power supply V+ and the second electric capacity C2 in parallel, and the 3rd electric capacity C3 be connected in parallel on negative power supply V-and the 4th electric capacity C4.
The utility model also comprises the voltage stabilizing didoe D1 be connected between the source electrode of insulated gate bipolar transistor IGBT and grid.
Operation principle of the present utility model is: when the input input control signal of optical coupler VL is non-zero, optical coupler VL conducting, the first triode Q1 is by, the second triode Q2 conducting, now cathode power supply V+ applies voltage to the source electrode of insulated gate bipolar transistor IGBT, impels its conducting; When the input input control signal of optical coupler VL is zero, optical coupler VL by, the first triode Q1 and the 3rd triode Q3 conducting, the source electrode of insulated gate bipolar transistor IGBT does not have voltage, impels it to turn off.
Although describe execution mode of the present utility model by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection range described by claim of the present utility model, all should within protection range of the present utility model.
Claims (4)
1. the drive circuit of a servo-driver, be connected with igbt, it is characterized in that: comprise optical coupler, the first to the 3rd triode, cathode power supply and negative power supply, the output of described optical coupler is connected with the base stage of the first triode, cathode power supply, the collector electrode of described first triode is connected with cathode power supply, and its emitter is connected with negative power supply; The base stage of described second triode is connected with the collector electrode of the first triode, and its collector electrode is connected with cathode power supply, and its emitter is connected with the collector electrode of the 3rd triode; The base stage of described 3rd triode is connected with the collector electrode of the first triode, and its emitter is connected with negative power supply; The emitter of described second triode, the collector electrode of the 3rd triode are all connected with the source electrode of igbt.
2. the drive circuit of servo-driver according to claim 1, it is characterized in that: also comprise the first resistance be connected with the input of optical coupler, the second resistance be connected with the base stage of the first triode, be connected to the 3rd resistance between the output of optical coupler and cathode power supply, and be connected to the 4th resistance between the collector electrode of the first triode and cathode power supply.
3. the drive circuit of servo-driver according to claim 1, is characterized in that: also comprise and be connected in the first electric capacity on cathode power supply and the second electric capacity in parallel, and the 3rd electric capacity be connected in parallel on negative power supply and the 4th electric capacity.
4. the drive circuit of servo-driver according to claim 1, is characterized in that: also comprise the voltage stabilizing didoe be connected between the source electrode of igbt and grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208965.XU CN204425301U (en) | 2015-04-07 | 2015-04-07 | A kind of drive circuit of servo-driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520208965.XU CN204425301U (en) | 2015-04-07 | 2015-04-07 | A kind of drive circuit of servo-driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425301U true CN204425301U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520208965.XU Expired - Fee Related CN204425301U (en) | 2015-04-07 | 2015-04-07 | A kind of drive circuit of servo-driver |
Country Status (1)
| Country | Link |
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| CN (1) | CN204425301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230414A (en) * | 2016-08-29 | 2016-12-14 | 成都信息工程大学 | A kind of MOSFET/IGBT high-speed driving circuit based on linear optical coupling isolation |
-
2015
- 2015-04-07 CN CN201520208965.XU patent/CN204425301U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106230414A (en) * | 2016-08-29 | 2016-12-14 | 成都信息工程大学 | A kind of MOSFET/IGBT high-speed driving circuit based on linear optical coupling isolation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160407 |