CN208572049U - A kind of IGBT control driving protective module - Google Patents
A kind of IGBT control driving protective module Download PDFInfo
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- CN208572049U CN208572049U CN201820565091.7U CN201820565091U CN208572049U CN 208572049 U CN208572049 U CN 208572049U CN 201820565091 U CN201820565091 U CN 201820565091U CN 208572049 U CN208572049 U CN 208572049U
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Abstract
The utility model discloses a kind of IGBT to control driving protective module, including source of stable pressure, input conditioning circuit, driving chip and peripheral output circuit, the output end and input conditioning circuit of the source of stable pressure, the power end of driving chip and peripheral output circuit is separately connected for providing working power, the input terminal of the input conditioning circuit connects pwm control signal, the output end 1 of the input conditioning circuit is connect for exporting control signal with the input terminal 1 of driving chip, the connection of input terminal 2 for inputting the output end 2 and driving chip of conditioning circuit is used for output reset signal, the driving chip output end 1 connects the input terminal of peripheral output circuit for exporting control signal to peripheral output circuit, the periphery output circuit signal output end 1, 2, 3 respectively correspond the emitter with IGBT, collector and door Pole connection.The utility model circuit design is simple and reliable, and stable, accurate driving signal, the normal work of energy effective protection IGBT can be provided for IGBT.
Description
Technical field
The utility model relates to a kind of IGBT to control driving protective module, belong to power electronic circuit technical field.
Background technique
IGBT is obtained in the circuits such as inversion, rectification because of the advantages that its conduction voltage drop is low, driving power is small, working frequency is high
It is widely used, is switching device important in field of power electronics.Good Drive Protecting Circuit is to determine IGBT working performance
Key, current drive module can provide suitable positive direction driving voltage, IGBT is enable reliably to open and turn off, but
There is also some shortcomings, such as: driving input and output delay time is long, and working efficiency is low；Without certainly when triggering IGBT overcurrent protection
Lock function；Complex circuit designs, reliability is not enough etc..
Therefore, with the continuous development of power electronic equipment, the applicable field IGBT is also more and more, designs a control
The perfect drive module of signal stabilization processed, defencive function plays an important role the accurate adjusting of IGBT.
Utility model content
The purpose of this utility model is to solve the problems, such as that complex circuit designs in the prior art, reliability are inadequate, is provided
A kind of IGBT control driving protective module, circuit design is simple and reliable, and stable, accurate driving signal can be provided for IGBT.
In order to solve the above technical problems, technical solution used by the utility model is to provide a kind of IGBT control driving
Protective module, characterized in that including source of stable pressure, conditioning circuit, driving chip and peripheral output circuit are inputted, the source of stable pressure
The power end of output end and input conditioning circuit, driving chip and peripheral output circuit is separately connected for providing working power,
The input terminal of the input conditioning circuit connects pwm control signal, the output end 1 and driving chip of the input conditioning circuit
For exporting control signal, the connection of input terminal 2 for inputting the output end 2 and driving chip of conditioning circuit is used for the connection of input terminal 1
Output reset signal, the driving chip output end 1 connect the input terminal of peripheral output circuit for exporting control signal to outer
Output circuit is enclosed, the periphery output circuit signal output end 1,2,3 respectively corresponds emitter, collector and gate pole with IGBT
Connection.
Further, the source of stable pressure includes ± 10V and -10V voltage output end, the source of stable pressure+10V voltage output end
It is connect with the power input of input conditioning circuit, the source of stable pressure+10V voltage output end is defeated with driving chip and periphery respectively
Out circuit the end VCC connection, the source of stable pressure -10V voltage output end respectively with driving chip and periphery output circuit VEE
End connection.
Further, the driving chip uses light-coupled isolation chip HCPL-316J, the VIN of the HCPL-316J-It connects
Ground, the VIN of HCPL-316J+The output end 1 of input conditioning circuit, the RESET chip of the HCPL-316J are connected by resistance 1
The output end 2 of the RESET input connection input conditioning circuit；The end VCC2 with VC of the HCPL-316J connects the+10V of source of stable pressure
Output end；
The utility model is achieved the utility model has the advantages that circuit design is simple and reliable, can provide for IGBT and stablize, is accurate
Driving signal has the functions such as failure feedback, overcurrent protection, the normal work of energy effective protection IGBT, before having good application
Scape.
Detailed description of the invention
Fig. 1 is the structural block diagram of the utility model one embodiment；
Fig. 2 is the schematic diagram of the source of stable pressure of the utility model one embodiment；
Fig. 3 is the schematic diagram of the input conditioning circuit of the utility model one embodiment；
Fig. 4 is the schematic diagram of the driving chip of the utility model one embodiment；
Fig. 5 is the schematic diagram of the peripheral output circuit of the utility model one embodiment.
Specific embodiment
The utility model is further described with reference to the accompanying drawing.Following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Figure 1, including source of stable pressure, input conditioning circuit, driving chip and peripheral output circuit.The source of stable pressure is
It inputs conditioning circuit and driving chip provides working power, the input terminal of the input conditioning circuit receives pwm control signal, institute
The VIN+ foot and RESET foot of the output end and driving chip of stating input conditioning circuit connect, the V of the driving chipOUTFoot output
Signal is controlled to peripheral output circuit, the periphery signal output end of output circuit and emitter, collector and the door of IGBT
Pole connection.
Fig. 2 is the schematic diagram of the source of stable pressure of the utility model one embodiment；As shown in Fig. 2, source of stable pressure input terminal is
220V individual event alternating current eliminates interference by common mode inductance L1, X capacitor and Y capacitance, using supplying Viper22A after rectifying and wave-filtering
Power supply control chip is converted to the AC signal of high frequency, through flyback transformer coupling output+10V and -10V voltage, SC431 and
TLP181 opto-coupler chip forms voltage sample feedback loop, and Vdd foot is control chip power supply, while being also the receiving portion of optocoupler
Power supply, the output voltage of transformer are that the emitting portion of optocoupler is powered, and the sampled signal of optocoupler gives control core by FB human hair combing waste
Piece, so that control switch frequency, realizes the stabilization of supply voltage, play pressure stabilization function.
Fig. 3 is the schematic diagram of the input conditioning circuit of the utility model one embodiment.
IGBT control driving protective module further includes main control chip, and main control chip controls the output of PWM wave.As shown in figure 3,
Input conditioning circuit plays the role of shaping and filtering burst pulse to input pwm signal, provides reset control for driving chip.D1,
D2 and D5 is Schmidt trigger, selects CD4093 integrated chip, pwm signal is after D1 and D2 buffering, as driving chip
VIN+Foot input signal, reduces input impedance, improves PWM waveform edge steepness.A small electricity in parallel between D1 and D2
Hold C1, the spike burst pulse that pulsewidth in input signal is lower than 500ns can be filtered out, IGBT is avoided to mislead.If IGBT occurs
Failure, main control chip block pwm signal set low input signal after troubleshooting, diode D4 cut-off, and+10V power supply is logical
It crosses resistance R5 to charge to C2, by the way that suitable R5 and C2 model is arranged, it is ensured that the charging time, C2 voltage reached in 10us
10V, D3 output signal RST is set low at this time, i.e., sets low, resetted to the RESET foot of driving chip.
Fig. 4 is the schematic diagram of the driving chip of the utility model one embodiment；As shown in figure 4, driving chip is selected
HCPL-316J light-coupled isolation chip has UCEOver-voltage detection protection and failure feedback function, maximum can drive 1200V/15A's
IGBT。
HCPL-316J primary side VIN+Foot connects the PWM output of input conditioning circuit, and RESET chip reset input pin connects defeated
Enter the reset signal of conditioning circuit, after which carries out electric appliance isolation to pwm signal, secondary side exports three tunnels control signal VE and is
The VE pin of HCPL-316J, the DESAT pin of VC, that is, HCPL-316J, VOUT, that is, HCPL-316J VOUT pin to periphery
Output circuit.VIN+Response time between foot and VOUT foot need to guarantee that input/output signal is synchronous no more than 500ns.
When there is short circuit or overcurrent condition in IGBT, UCEIt increases rapidly, when being more than the protection voltage of setting, that is, end DESAT
When voltage-to-ground is greater than 7V, FAULT failure output terminal sets low and error signal ERROR is fed back to main control chip, HCPL-316J
Low level output is maintained, IGBT shutdown, after trouble shooting, RESET chip reset input pin receives reset signal
Restore output.The main control chip can be achieved using DSP in the prior art or single-chip microcontroller, and the effect of main control chip is to generate
PWM input signal simultaneously receives the error signal of HCPL-316J feedback and adjusts the PWM input signal of output according to error signal
Duty ratio.
Fig. 5 is the schematic diagram of the peripheral output circuit of the utility model one embodiment；As shown in Fig. 5, C, G, E difference
It is connect with the collector of IGBT, gate pole and emitter, peripheral output circuit forms complementary circuit by two triodes Q1, Q2, outside
IGBT switching loss can be reduced by enclosing output circuit, have fault detection and dynamic peak voltage inhibiting effect.Work as VOUTOutput is high
When level, Q1 conducting, Q2 shutdown, UGE=+10V, IGBT conducting；Work as VOUTWhen exporting low level, Q1 shutdown, Q2 conducting, UGE=-
10V, IGBT shutdown.According to different IGBT models, suitable gate pole open resistance R is selectedgonWith shutdown resistance RgoffIt can drop
Low switching losses.One two-way clamp diode D8 of parallel connection, prevents gate circuit from vibrating between gate pole and emitter.It is defeated
Enter to hold VC to pass through a current-limiting resistance RCIt is connect with a high voltage isolated diode D5 with collector C, for detecting leading for IGBT
Logical pressure drop UCE, when it is higher than reference voltage, it is believed that IGBT breaks down.The transient state suppression in parallel between collector and gate pole
Diode D6 processed, as peak voltage UCEWhen threshold voltage more than D6, D6 is breakdown, UCEGate pole is directly acted on, at this time
IGBT lightly conducting plays dynamic peak voltage inhibiting effect.
The above describes the basic principles and main features and advantage of the utility model.It should be pointed out that above-described embodiment
With described in specification only illustrate the principles of the present invention, without deviating from the technical principle of the utility model,
Several improvements and changes can also be made, such modifications and variations are fallen within the scope of the claimed invention.
Claims (10)
1. a kind of IGBT control driving protective module, characterized in that including source of stable pressure, input conditioning circuit, driving chip and outer
Enclose output circuit, the output end of the source of stable pressure and the power end point of input conditioning circuit, driving chip and peripheral output circuit
Lian Jie not be for providing working power, the input terminal of the input conditioning circuit connects PWM input signal, the input conditioning electricity
The output end 1 on road is connect for exporting control signal, inputting the output end 2 of conditioning circuit and driving with the input terminal 1 of driving chip
The connection of input terminal 2 of dynamic chip is used for output reset signal, and the driving chip output end 1 connects the input of peripheral output circuit
End for export control signal to peripheral output circuit, the periphery output circuit signal output end 1,2,3 respectively correspond and
Emitter, the collector of IGBT is connected with gate pole.
2. a kind of IGBT control driving protective module according to claim 1, it is characterized in that: the source of stable pressure include+
10V and -10V voltage output end, source of stable pressure+10V voltage output end are connect with the power input of input conditioning circuit, source of stable pressure
+ 10V voltage output end is connect with the end VCC of driving chip and peripheral output circuit respectively, source of stable pressure -10V voltage output end point
It is not connect with the end VEE of driving chip and peripheral output circuit.
3. a kind of IGBT control driving protective module according to claim 2, it is characterized in that: the driving chip uses
Optical coupling isolator.
4. a kind of IGBT control driving protective module according to claim 3, it is characterized in that: the type of the optical coupling isolator
It number is HCPL-316J, the VIN of HCPL-316J-Ground connection, the VIN of HCPL-316J+The defeated of input conditioning circuit is connected by resistance 1
Outlet 1, the output end 2 of the RESET chip reset input terminal connection input conditioning circuit of HCPL-316J；The VCC2 of HCPL-316J
+ 10V the output end of source of stable pressure is connected with the end VC.
5. a kind of IGBT control driving protective module according to claim 4, it is characterized in that: the DESAT of HCPL-316J draws
The VOUT pin of control terminal after foot series resistance R and diode as IGBT collector, HCPL-316J is connected by two three poles
The complementary circuit of pipe Q1 and Q2 composition, VOUT pin connect the base stage of Q1, Q2, and the emitter of Q1 connects 1 foot of resistance Rgon,
The control terminal of the 2 feet connection IGBT gate pole of Rgon；The emitter of collector the connection+10V, Q2 of Q1 are connected by resistance Rgoff
The control terminal of IGBT gate pole, the control terminal of the VE pin connection IGBT emitter of HCPL-316J.
6. a kind of IGBT control driving protective module according to claim 4, it is characterized in that: the HCPL-316J
The input terminal feedback error signal of FAULT failure output terminal connection main control chip.
7. a kind of IGBT control driving protective module according to claim 6, it is characterized in that: the main control chip is DSP
Or single-chip microcontroller.
8. a kind of IGBT control driving protective module according to claim 2, it is characterized in that: the source of stable pressure input terminal
220V individual event alternating current is connected, the 220V individual event alternating current fire wire connect common mode inductance L1, the both ends common mode inductance L1 with adjacent line
The input terminal of power supply chip is connected after rectifying and wave-filtering capacitor in parallel, the AC signal of power supply control chip output high frequency becomes through flyback
Depressor couples output+10V and -10V voltage.
9. a kind of IGBT control driving protective module according to claim 8, it is characterized in that: the power supply control chip
Model is Viper22A.
10. a kind of IGBT control driving protective module according to claim 1, it is characterized in that: the input conditioning circuit
Including Schmitt trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565091.7U CN208572049U (en) | 2018-04-20 | 2018-04-20 | A kind of IGBT control driving protective module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820565091.7U CN208572049U (en) | 2018-04-20 | 2018-04-20 | A kind of IGBT control driving protective module |
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| CN208572049U true CN208572049U (en) | 2019-03-01 |
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| CN201820565091.7U Active CN208572049U (en) | 2018-04-20 | 2018-04-20 | A kind of IGBT control driving protective module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889027A (en) * | 2019-03-20 | 2019-06-14 | 山东德佑电气股份有限公司 | IGBT drive circuit for power quality controlling device |
| CN110176855A (en) * | 2019-05-31 | 2019-08-27 | 芜湖康爱而电气有限公司 | A kind of active clamp protection circuit of the IGBT driving based on HCPL-316J |
| CN112260229A (en) * | 2020-12-23 | 2021-01-22 | 上海芯龙半导体技术股份有限公司南京分公司 | Power chip circuit |
-
2018
- 2018-04-20 CN CN201820565091.7U patent/CN208572049U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889027A (en) * | 2019-03-20 | 2019-06-14 | 山东德佑电气股份有限公司 | IGBT drive circuit for power quality controlling device |
| CN110176855A (en) * | 2019-05-31 | 2019-08-27 | 芜湖康爱而电气有限公司 | A kind of active clamp protection circuit of the IGBT driving based on HCPL-316J |
| CN112260229A (en) * | 2020-12-23 | 2021-01-22 | 上海芯龙半导体技术股份有限公司南京分公司 | Power chip circuit |
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