CN106602847A - Low-cost IGBT driving circuit - Google Patents
Low-cost IGBT driving circuit Download PDFInfo
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- CN106602847A CN106602847A CN201611226487.0A CN201611226487A CN106602847A CN 106602847 A CN106602847 A CN 106602847A CN 201611226487 A CN201611226487 A CN 201611226487A CN 106602847 A CN106602847 A CN 106602847A
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- optical coupler
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- 101100520142 Caenorhabditis elegans pin-2 gene Proteins 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract 11
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
Abstract
The invention provides a low-cost IGBT driving circuit, comprising an optical coupler U1, a Schmitt trigger U2 and a phase inverter U3 wherein the two pins of the optical coupler U1 are connected to a 5V common power supply VEE through an electric resistor R3; the two pins of the optical coupler U1 are connected to the 5V common power supply VEE sequentially through the three pins-two pins of a triode Q1, an electric resistor R2 and an inversely connected diode D1; a capacitor C2 and an electric resistor R4 are connected in parallel among the two pins and the three pins of the optical coupler U1; the third pin of the optical coupler U1 is connected to a driving signal Q2 sequentially through the two pins and one pin of the electric resistor R5 and the phase inverter U3; the eighth pin of the optical coupler U1 is connected with a 15v power supply; the eighth pin of the optical coupler U1 is connected with the fifth pin of the optical coupler U1; the fifth pin of the optical couple U1 is connected with a GND. The sixth pin and the seventh pin of the optical coupler U1 are connected; and the seventh pin of the optical coupler U1 is connected with the first pin of the Schmitt trigger U2 through the electric resistor R6. The low-cost IGBT driving circuit of the invention has a simple structure and requires less on the design technology.
Description
Technical field
The present invention is applied to power electronic product manufacture field, particularly a kind of inexpensive IGBT drive circuit.
Background technology
Insulated gate bipolar transistor IGBT is third generation power electronic devices, trouble free service, it collect power transistor GTR and
, with being easy to drive, peak point current capacity is big, automatic shutoff, switching frequency high for the advantage of power field effect pipe MOSFET
The characteristics of (10-40 kHz), be power electronic devices of new generation at present with the fastest developing speed, be widely used in variable-frequency power sources,
In the middle of the converter devices such as electric machine speed regulation, UPS, photovoltaic, wind-power electricity generation, inverter type welder, in these devices, typically by IGBT
Composition power cell, and drive circuit is the bridge for connecting control circuit and power cell, it produces the control circuit in device
Raw digital PWM signal carries out isolation transmission, level conversion and power amplification, realize control circuit to power cell open and
The control of shut-off action, so as to realize the power conversion function of device.Although high performance drive circuit has more fully protecting
Protective function, but there is also problems with：1st, cost is higher；2nd, board design is more complicated, and then increases trouble point；3rd, set
It is higher to the number of plies and technological requirement of circuit board in meter.
The content of the invention
It is simple for structure while the present invention proposes one kind and takes into account stability to solve the above problems, will to design work
Seek low inexpensive IGBT drive circuit.
A kind of inexpensive IGBT drive circuit designed by the present invention, including photo-coupler U1, Schmidt trigger U2 and
Phase inverter U3, wherein：
2 pin of photo-coupler U1 connect 5V public power VEE by resistance R3, and 2 pin of photo-coupler U1 pass sequentially through triode
The diode D1 connection 5V public power VEE of the pin of 3 pin -2, resistance R2 and Opposite direction connection of Q1,2 pin and 3 pin of photo-coupler U1
Between be parallel with electric capacity C2 and resistance R4, the pin 3 of photo-coupler U1 passes sequentially through the pin of 2 pin -1 connection of R5 and phase inverter U3 and drives
Signal Q2；The connection 15V power supplys of pin 8 of photo-coupler U1, and the pin 8 of photo-coupler U1 also connects photo-coupler U1 by electric capacity C1
Pin 5；The connection GND of pin 5 of photo-coupler U1；The pin 6 and pin 7 of photo-coupler U1 connects, and the pin 7 of photo-coupler U1 is by electricity
Resistance R6 connects the pin 1 of Schmidt trigger U2；
The pin 1 of Schmidt trigger U2 is grounded by electric capacity C3；The pin 2 and pin 3 of Schmidt trigger U2 connects；Schmidt trigger
The pin 4 of device U2 passes sequentially through resistance R7 and resistance R8 connection GND, and is provided with test point TP1 between resistance R7 and R8；Shi Mi
The pin 7 of special trigger U2 is directly connected to GND；The pin 14 of Schmidt trigger U2 is directly connected to 15V power supplys；
1 pin of triode Q1 is connected by resistance R1 with 2 pin of triode Q1, and 1 pin of triode Q1 is directly connected with 5V power supplys.
Further scheme is：Model TLP250 of photo-coupler U1, the model of Schmidt trigger U2
The model 7406 of CD40106, phase inverter U3, the model 8550 of triode Q1, model BZX84C3V9 of diode D1,
Resistance R1 is 300 ohm, and resistance R2 is 20 ohm, and resistance R3 is 5.1k ohms, and resistance R4 is 5.1k ohms, and resistance R5 is 300
Ohm, resistance R6 is 220k ohms, and resistance R7 is 3.3k ohms, and resistance R8 is 4.7 ohm, and the specification of electric capacity C1 is 100nF/
50V, electric capacity C2 are 6800pF/50V, and electric capacity C3 is 22pF/50V.
The present invention provides inexpensive IGBT drive circuit and has the characteristics that：
1st, it is with low cost, using isolation optocoupler TLP520 as IGBT driving chip；
2nd, circuit design is simple, and components and parts are less, reduces trouble point, is adapted to batch production；
3rd, circuit board PCB can be met using double-layer structure and be required, design technology requires simple.
Description of the drawings
Fig. 1 is the structural representation figure of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described.
Embodiment 1.
As shown in figure 1, the inexpensive IGBT drive circuit of the present embodiment description, including photo-coupler U1, schmidt trigger
Device U2 and phase inverter U3, wherein：
2 pin of photo-coupler U1 connect 5V public power VEE by resistance R3, and 2 pin of photo-coupler U1 pass sequentially through triode
The diode D1 connection 5V public power VEE of the pin of 3 pin -2, resistance R2 and Opposite direction connection of Q1,2 pin and 3 pin of photo-coupler U1
Between be parallel with electric capacity C2 and resistance R4, the pin 3 of photo-coupler U1 passes sequentially through the pin of 2 pin -1 connection of R5 and phase inverter U3 and drives
Signal Q2；The connection 15V power supplys of pin 8 of photo-coupler U1, and the pin 8 of photo-coupler U1 also connects photo-coupler U1 by electric capacity C1
Pin 5；The connection GND of pin 5 of photo-coupler U1；The pin 6 and pin 7 of photo-coupler U1 connects, and the pin 7 of photo-coupler U1 is by electricity
Resistance R6 connects the pin 1 of Schmidt trigger U2；
The pin 1 of Schmidt trigger U2 is grounded by electric capacity C3；The pin 2 and pin 3 of Schmidt trigger U2 connects；Schmidt trigger
The pin 4 of device U2 passes sequentially through resistance R7 and resistance R8 connection GND, and is provided with test point TP1 between resistance R7 and R8；Shi Mi
The pin 7 of special trigger U2 is directly connected to GND；The pin 14 of Schmidt trigger U2 is directly connected to 15V power supplys；
1 pin of triode Q1 is connected by resistance R1 with 2 pin of triode Q1, and 1 pin of triode Q1 is directly connected with 5V power supplys.
Model TLP250 of wherein described photo-coupler U1, model CD40106 of Schmidt trigger U2 is anti-phase
The model 7406 of device U3, the model 8550 of triode Q1, model BZX84C3V9 of diode D1, resistance R1 is 300 Europe
Nurse, resistance R2 is 20 ohm, and resistance R3 is 5.1k ohms, and resistance R4 is 5.1k ohms, and resistance R5 is 300 ohm, and resistance R6 is
220k ohms, resistance R7 is 3.3k ohms, and resistance R8 is 4.7 ohm, and the specification of electric capacity C1 is 100nF/50V, and electric capacity C2 is
6800pF/50V, electric capacity C3 are 22pF/50V.
Claims (2)
1. a kind of inexpensive IGBT drive circuit, including photo-coupler U1, Schmidt trigger U2 and phase inverter U3, its feature
It is：
2 pin of photo-coupler U1 connect 5V public power VEE by resistance R3, and 2 pin of photo-coupler U1 pass sequentially through triode
The diode D1 connection 5V public power VEE of the pin of 3 pin -2, resistance R2 and Opposite direction connection of Q1,2 pin and 3 pin of photo-coupler U1
Between be parallel with electric capacity C2 and resistance R4, the pin 3 of photo-coupler U1 passes sequentially through the pin of 2 pin -1 connection of R5 and phase inverter U3 and drives
Signal Q2；The connection 15V power supplys of pin 8 of photo-coupler U1, and the pin 8 of photo-coupler U1 also connects photo-coupler U1 by electric capacity C1
Pin 5；The connection GND of pin 5 of photo-coupler U1；The pin 6 and pin 7 of photo-coupler U1 connects, and the pin 7 of photo-coupler U1 is by electricity
Resistance R6 connects the pin 1 of Schmidt trigger U2；
The pin 1 of Schmidt trigger U2 is grounded by electric capacity C3；The pin 2 and pin 3 of Schmidt trigger U2 connects；Schmidt trigger
The pin 4 of device U2 passes sequentially through resistance R7 and resistance R8 connection GND, and is provided with test point TP1 between resistance R7 and R8；Shi Mi
The pin 7 of special trigger U2 is directly connected to GND；The pin 14 of Schmidt trigger U2 is directly connected to 15V power supplys；
1 pin of triode Q1 is connected by resistance R1 with 2 pin of triode Q1, and 1 pin of triode Q1 is directly connected with 5V power supplys.
2. a kind of inexpensive IGBT drive circuit as claimed in claim 1, is characterized in that the model of photo-coupler U1
TLP250, model CD40106 of Schmidt trigger U2, the model 7406 of phase inverter U3, the model of triode Q1
8550, model BZX84C3V9 of diode D1, resistance R1 is 300 ohm, and resistance R2 is 20 ohm, and resistance R3 is 5.1k Europe
Nurse, resistance R4 be 5.1k ohms, resistance R5 be 300 ohm, resistance R6 be 220k ohms, resistance R7 be 3.3k ohms, resistance R8
For 4.7 ohm, the specification of electric capacity C1 is 100nF/50V, and electric capacity C2 is 6800pF/50V, and electric capacity C3 is 22pF/50V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226487.0A CN106602847A (en) | 2016-12-27 | 2016-12-27 | Low-cost IGBT driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226487.0A CN106602847A (en) | 2016-12-27 | 2016-12-27 | Low-cost IGBT driving circuit |
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| Publication Number | Publication Date |
|---|---|
| CN106602847A true CN106602847A (en) | 2017-04-26 |
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| CN201611226487.0A Pending CN106602847A (en) | 2016-12-27 | 2016-12-27 | Low-cost IGBT driving circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450235A (en) * | 2018-12-27 | 2019-03-08 | 杭州易和网络有限公司 | IGBT multi-parallel module drive circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011017802A1 (en) * | 2009-08-11 | 2011-02-17 | Jayaram Sheshakamal H | High voltage square wave and spwm wave generator |
| CN102412565A (en) * | 2011-11-22 | 2012-04-11 | 常熟市董浜镇华进电器厂 | Isolated IGBT (Insulated Gate Bipolar Transistor) driving circuit with overcurrent protection function |
| CN206272478U (en) * | 2016-12-27 | 2017-06-20 | 杭州易和网络有限公司 | Inexpensive IGBT drive circuit |
-
2016
- 2016-12-27 CN CN201611226487.0A patent/CN106602847A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011017802A1 (en) * | 2009-08-11 | 2011-02-17 | Jayaram Sheshakamal H | High voltage square wave and spwm wave generator |
| CN102412565A (en) * | 2011-11-22 | 2012-04-11 | 常熟市董浜镇华进电器厂 | Isolated IGBT (Insulated Gate Bipolar Transistor) driving circuit with overcurrent protection function |
| CN206272478U (en) * | 2016-12-27 | 2017-06-20 | 杭州易和网络有限公司 | Inexpensive IGBT drive circuit |
Non-Patent Citations (1)
| Title |
|---|
| 唐开毅: "中高压大功率IGBT驱动保护电路及应用研究" * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450235A (en) * | 2018-12-27 | 2019-03-08 | 杭州易和网络有限公司 | IGBT multi-parallel module drive circuit |
| CN109450235B (en) * | 2018-12-27 | 2024-01-12 | 杭州易和网络有限公司 | IGBT multi-parallel module driving circuit |
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Application publication date: 20170426 |