CN204835910U - IGBT drive circuit - Google Patents
IGBT drive circuit Download PDFInfo
- Publication number
- CN204835910U CN204835910U CN201520485787.5U CN201520485787U CN204835910U CN 204835910 U CN204835910 U CN 204835910U CN 201520485787 U CN201520485787 U CN 201520485787U CN 204835910 U CN204835910 U CN 204835910U
- Authority
- CN
- China
- Prior art keywords
- diode
- resistance
- triode
- pole
- igbt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a IGBT drive circuit, including resistance R5, triode Q1, diode D1, the IGBT pipe, electric capacity C1 and resistance R1, triode Q4 base and input vi are connected respectively to resistance R5 one end, triode Q4 collecting electrode is connected respectively to the resistance R5 other end, triode Q1 collecting electrode and power VCC, triode Q4 projecting pole is connecting resistance R4 and diode D6 positive pole respectively, diode D6 negative pole connecting resistance R6, diode D5 negative pole is connected respectively to the resistance R6 other end, electric capacity C1, resistance R7 and diode D7 are anodal. The utility model discloses what IGBT drive circuit adopted is the mode of single power 15V power supply, and normally switching on and turn -offing of IGBT can be guaranteed for 15V and 0V to the grid voltage of IGBT pipe, and the circuit is simple, the especially adapted use in the domestic appliance of low cost controller.
Description
Technical field
The utility model relates to a kind of drive circuit, specifically a kind of IGBT drive circuit.
Background technology
According to different functional requirements; different drive circuits can be chosen; in the electronic equipment of some important big current or costliness; we can choose special IGBT and drive and protect IC; reliability is very high; but in some low costs, as in household electrical appliance, it is not too practical that these driver modules just become.
Utility model content
The purpose of this utility model is the IGBT drive circuit providing a kind of low cost, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of IGBT drive circuit, comprises resistance R5, triode Q1, diode D1, IGBT manages, electric capacity C1 and resistance R1, described resistance R5 one end is connecting triode Q4 base stage and input Vi, resistance R5 other end connecting triode Q4 collector electrode respectively respectively, triode Q1 collector electrode and power supply VCC, triode Q4 emitter is contact resistance R4 and diode D6 positive pole respectively, diode D6 negative pole contact resistance R6, and the resistance R6 other end connects diode D5 negative pole respectively, electric capacity C1, resistance R7 and diode D7 positive pole, the resistance R7 other end connects the electric capacity C1 other end respectively, triode Q3 collector electrode, diode D2 positive pole, the E pole of triode Q3 emitter and IGBT pipe ground connection, the C pole of IGBT pipe connects diode D7 negative pole and output end vo respectively, and the G pole of IGBT pipe connects diode D4 positive pole respectively, diode D3 negative pole and resistance R2, diode D3 positive pole connecting triode Q3 collector electrode, triode Q3 base stage connects diode D5 positive pole, described diode D4 negative pole contact resistance R1, and the resistance R1 other end is the contact resistance R2 other end respectively, diode D1 positive pole, triode Q1 emitter and triode Q3 emitter, diode D1 negative pole connects diode D2 negative pole, and described triode Q1 base stage is connecting triode Q3 base stage and the resistance R4 other end respectively.
As further program of the utility model: described diode D5 is voltage stabilizing didoe.
As the utility model further scheme: described power supply VCC voltage is 15V.
Compared with prior art, the beneficial effects of the utility model are: what the utility model IGBT drive circuit adopted is the mode that single supply 15V powers, the grid voltage of IGBT pipe can be 15V and 0V, normally and the shutoff of IGBT can be ensured, circuit is simple, is applicable to very much being used in the home appliance controller of low cost.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of IGBT drive circuit.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of IGBT drive circuit, comprises resistance R5, triode Q1, diode D1, IGBT manages, electric capacity C1 and resistance R1, resistance R5 one end is connecting triode Q4 base stage and input Vi, resistance R5 other end connecting triode Q4 collector electrode respectively respectively, triode Q1 collector electrode and power supply VCC, triode Q4 emitter is contact resistance R4 and diode D6 positive pole respectively, diode D6 negative pole contact resistance R6, and the resistance R6 other end connects diode D5 negative pole respectively, electric capacity C1, resistance R7 and diode D7 positive pole, the resistance R7 other end connects the electric capacity C1 other end respectively, triode Q3 collector electrode, diode D2 positive pole, the E pole of triode Q3 emitter and IGBT pipe ground connection, the C pole of IGBT pipe connects diode D7 negative pole and output end vo respectively, and the G pole of IGBT pipe connects diode D4 positive pole respectively, diode D3 negative pole and resistance R2, diode D3 positive pole connecting triode Q3 collector electrode, triode Q3 base stage connects diode D5 positive pole, described diode D4 negative pole contact resistance R1, and the resistance R1 other end is the contact resistance R2 other end respectively, diode D1 positive pole, triode Q1 emitter and triode Q3 emitter, diode D1 negative pole connects diode D2 negative pole, and described triode Q1 base stage is connecting triode Q3 base stage and the resistance R4 other end respectively.
Diode D5 is voltage stabilizing didoe.
Power supply VCC voltage is 15V.
Operation principle of the present utility model is: refer to Fig. 1, and input Vi inputs the control signal of IGBT, when input high level time, Q4 conducting, then triode Q4 launches very high level, thus drives Q1 conducting, Q2 ends, make triode Q1 emitter voltage be+15V, then drive IGBT pipe by resistance R2, now D4 is equivalent to open circuit, R2 is off, D1, D2 are the voltage stabilizing didoe of 15V, they can the G pole of control IGBT pipe at 15V, the conducting of control IGBT pipe; What input as input Vi is low level, Q4 ends, and triode Q4 launches very low level, thus drives Q2 conducting, and Q1 ends, and triode Q1 emitter level is low, and at this moment R1 and R2 thinks parallel connection to make IGBT be cut-off state.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (3)
1. an IGBT drive circuit, comprises resistance R5, triode Q1, diode D1, IGBT manages, electric capacity C1 and resistance R1, is characterized in that, described resistance R5 one end is connecting triode Q4 base stage and input Vi, resistance R5 other end connecting triode Q4 collector electrode respectively respectively, triode Q1 collector electrode and power supply VCC, triode Q4 emitter is contact resistance R4 and diode D6 positive pole respectively, diode D6 negative pole contact resistance R6, and the resistance R6 other end connects diode D5 negative pole respectively, electric capacity C1, resistance R7 and diode D7 positive pole, the resistance R7 other end connects the electric capacity C1 other end respectively, triode Q3 collector electrode, diode D2 positive pole, the E pole of triode Q3 emitter and IGBT pipe ground connection, the C pole of IGBT pipe connects diode D7 negative pole and output end vo respectively, and the G pole of IGBT pipe connects diode D4 positive pole respectively, diode D3 negative pole and resistance R2, diode D3 positive pole connecting triode Q3 collector electrode, triode Q3 base stage connects diode D5 positive pole, described diode D4 negative pole contact resistance R1, and the resistance R1 other end is the contact resistance R2 other end respectively, diode D1 positive pole, triode Q1 emitter and triode Q3 emitter, diode D1 negative pole connects diode D2 negative pole, and described triode Q1 base stage is connecting triode Q3 base stage and the resistance R4 other end respectively.
2. IGBT drive circuit according to claim 1, is characterized in that, described diode D5 is voltage stabilizing didoe.
3. IGBT drive circuit according to claim 1, is characterized in that, described power supply VCC voltage is 15V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485787.5U CN204835910U (en) | 2015-07-07 | 2015-07-07 | IGBT drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485787.5U CN204835910U (en) | 2015-07-07 | 2015-07-07 | IGBT drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835910U true CN204835910U (en) | 2015-12-02 |
Family
ID=54693465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520485787.5U Expired - Fee Related CN204835910U (en) | 2015-07-07 | 2015-07-07 | IGBT drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204835910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793185A (en) * | 2016-11-28 | 2017-05-31 | 林桂清 | A kind of heater of utilization ceramic material |
-
2015
- 2015-07-07 CN CN201520485787.5U patent/CN204835910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793185A (en) * | 2016-11-28 | 2017-05-31 | 林桂清 | A kind of heater of utilization ceramic material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204886405U (en) | Two power isolation circuit | |
| CN204835910U (en) | IGBT drive circuit | |
| CN203788258U (en) | Novel IGBT/MOSFET driving circuit | |
| CN203911883U (en) | Driving circuit of switch element | |
| CN204652334U (en) | A kind of drive circuit based on IGBT | |
| CN204836134U (en) | Isolated driving circuit | |
| CN204180331U (en) | A kind of protective circuit of LED power | |
| CN203086325U (en) | Drive signal dead zone generating device | |
| CN204668907U (en) | A kind of circuit-breaker | |
| CN205015831U (en) | Inside singlechip reset circuit of computer | |
| CN204539118U (en) | A kind of VFC circuit | |
| CN204559975U (en) | A kind of stabilization protective circuit | |
| CN203522680U (en) | Time-delay circuit | |
| CN203851016U (en) | A time-delay soft start circuit used for BOOST-PFC | |
| CN202455582U (en) | Signal generating circuit of nuclear marker light | |
| CN104796120A (en) | Time delay circuit | |
| CN204205567U (en) | A kind of circuit for remotely controlling of Switching Power Supply | |
| CN103367041A (en) | Contactor PWM (pulse-width modulation) driving circuit | |
| CN204349420U (en) | Power protecting circuit and electronic equipment | |
| CN204361670U (en) | A kind of short-circuit protection circuit of lithium battery | |
| CN205136744U (en) | Electron is tap from beginning | |
| CN204696381U (en) | A kind of electronic socket | |
| CN204697035U (en) | A kind of relay delay control circuit | |
| CN204425301U (en) | A kind of drive circuit of servo-driver | |
| CN204795713U (en) | LED step -down voltage stabilizing circuit |
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 |
Granted publication date: 20151202 Termination date: 20160707 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |