CN1838536B - Power switch driving device - Google Patents
Power switch driving device Download PDFInfo
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- CN1838536B CN1838536B CN200610043804A CN200610043804A CN1838536B CN 1838536 B CN1838536 B CN 1838536B CN 200610043804 A CN200610043804 A CN 200610043804A CN 200610043804 A CN200610043804 A CN 200610043804A CN 1838536 B CN1838536 B CN 1838536B
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- power switch
- grid
- demultiplexer
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- resistance
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Abstract
This invention relates to a driving device of the power switch, which is composed of the control circuit, grid balance inductor and signal divider, wherein the control circuit is composed of the two voltage-stabilizer tubes and two resistance wires; one end of one resistance wire connects with the grid of the power switch, the other end connects with the output of the grid balance inductor, and the input of the grid balance inductor connects with the signal divider, the other resistance wire is connected between the grid and leaking pole; after the positive pole of the two stabilizer tubes in series, one end connects with the grid of the power switch, and the other connects with the leaking pole of the power switch; the leaking pole of the power switch connects with the signal divider. This invention solves the voltage or current balance of the power switch.
Description
(1) technical field under
The present invention relates to a kind of drive unit of power switch of serial or parallel connection, belong to electric and electronic technical field.
(2) background technology
When traditional power switch serial or parallel connection, because the switching time of power switch is inconsistent, discreteness is too big, the voltage or the current imbalance that can cause each power switch to bear, the voltage that finally causes power switch to bear exceeds its ability of bearing, and makes power switch breakdown, because the switching speed of power switch is exceedingly fast, peak voltage that produces during shutoff and peak current are added on the power switch, easier breakdown power switch.
In traditional way, the general RCD buffering that only adds on power switch absorbs circuit, under the less situation of the discreteness switching time of power switch, peak voltage or peak current can be absorbed, suppressed the rising of peak voltage and electric current, but when a plurality of power switch serial or parallel connection, the circuit complexity, install also very hugely, the loss of device such as also increases at a series of shortcomings.
(3) summary of the invention
The object of the present invention is to provide a kind of drive unit of power switch, by changing the driving of power switch, thereby change the unfavorable factor that switching time, inconsistent characteristic caused of power switch, change consistency in the power switch action, reach the voltage on power switch or the consistency of electric current, finally reach voltage or current balance type purpose.
The present invention realizes by following measure:
The drive unit of power switch of the present invention is made up of control circuit, grid balance inductance and demultiplexer, and control circuit is made up of two voltage-stabiliser tubes and two resistance; The grid of one termination power switch of one of them resistance, the output of another termination grid balance inductance, the input termination demultiplexer of grid balance inductance; Another resistance is connected between the grid and drain electrode of power switch; After the positive pole series connection of two voltage-stabiliser tubes, the grid of a termination power switch, the drain electrode of another termination power switch; The drain electrode of power switch is connected with demultiplexer.
The drive unit of power switch of the present invention, the turn ratio of described grid balance inductance are 1: 1.
When drive unit of the present invention used, power switch can be for two or more, and power switch can be series connection, also can be in parallel.Described power switch can be that GTR, IGBT, IGCT etc. are from the switch-off power device.
Described voltage-stabiliser tube is for mainly being to play amplitude limit and anti-interference effect.
Described demultiplexer is mainly to be that a signal decomposition is become the simultaneously identical again signal of a plurality of mutual isolation.
Drive unit of the present invention, its control circuit mainly are to play amplitude limit and anti-interference effect.Demultiplexer is separated into input signal the signal of identical and mutual isolation.The effect of grid balance inductance makes the power switch grid electric current of flowing through keep identical in time, electric current reaches balance, the service time and the turn-off time of power switch are consistent, and the voltage and current that each power switch is born reaches balance, can not damage power switch.Therefore, drive unit of the present invention has solved inconsistent characteristic switching time of power switch, has just solved the voltage or the current balance type problem of power switch.
(4) description of drawings
The drive unit circuit diagram of two power switch series connection of Fig. 1
Fig. 2 is the drive unit circuit diagram of a plurality of power switch series connection
Fig. 3 is the drive unit circuit diagram of two power switch parallel connections
Fig. 4 is the drive unit circuit diagram of a plurality of power switch parallel connections
Among the figure: 1-power switch 2-control circuit 3-grid balance inductance 4-demultiplexer.
(5) embodiment
Below in conjunction with the drawings and specific embodiments the present invention is made specific description.
Shown in the accompanying drawing 1, be the circuit diagram of two power switchs 1 series connection, the power switch of this accompanying drawing 1 is an example with IGBT, and the drain electrode of power switch ug1 and the source electrode of ug2 join, if power switch is many, just go here and there mutually successively.Installed a kind of control circuit 2 additional between the grid of each power switch 1 and drain electrode, control circuit 2 mainly is to play amplitude limit and anti-interference effect.Control circuit 2 mainly is made up of two voltage-stabiliser tubes and two resistance, with power switch ug2 is example, the positive pole series connection of voltage-stabiliser tube D1 and D2, series connection is later in parallel with resistance R 1, the negative pole of voltage-stabiliser tube D2 connects the drain electrode of power switch 1, the negative pole of voltage-stabiliser tube D1 connects the grid of power switch ug2, the grid of a termination power switch of resistance R 2, the output B of another termination grid balance inductance 3 of resistance R 2.The grid of same power switch ug1 is received another output terminals A of balance inductance L1 by resistance R 3, the input G1 of grid balance inductance L1 and G2 insert respectively in the middle of the demultiplexer 4,2 E1 and E2 are drawn in the drain electrode of power switch ug1 and ug2, E1 and E2 guide to respectively in the middle of the demultiplexer 4, and demultiplexer is separated into input signal the signal of identical and mutual isolation.Here the grid balance inductance mainly is to make the grid of the power switch electric current of flowing through keep identical in time, reaches balance, and the time of turning on and off is consistent, and the turn ratio of the balance inductance here is 1: 1.
Shown in the accompanying drawing 2, be the driving circuit structure figure of 4 power switch series connection, the power switch here can be a variety of devices that can make switch, here with IGBT example, the drain electrode of power switch ug1 and the source electrode of ug2 join, the drain electrode of power switch ug2 and the source electrode of ug3 join, by that analogy, power switch is connected successively, on each power switch, all installed control circuit 2 additional, it is identical with Fig. 1 to add holding position, act on also identical, the grid of power switch ug1 has been received grid balance inductance L1 output terminals A by a resistance R 5, the grid of ug2 has been received another output B of grid balance inductance L1 equally by a resistance R 4, the input G1 of grid balance inductance L1 has guided on the demultiplexer, another input of L1 has been guided on the demultiplexer by the output G2 of grid balance inductance L3, so same, the grid of power switch ug3 and ug4 is connected on two outputs of grid balance inductance L2 by a resistance respectively, the input G4 of grid balance inductance L2 has received on the demultiplexer, another output of another input grid balance inductance L3 of grid balance inductance L2, G3 has received on the demultiplexer, demultiplexer is separated into the signal of a plurality of and mutual isolation to input signal, and the effect of grid balance inductance is identical with Fig. 1.
Shown in the accompanying drawing 3, be the drive unit circuit diagram of two power switch parallel connections, draw an end E1 after the drain electrode parallel connection of power switch ug1 and ug2 to demultiplexer.The source electrode of power switch ug1 and ug2 is connected in parallel, the grid of ug1 and ug2 has been received on the output ends A, B of grid balance inductance L1 respectively by a resistance, the input two ends G1 and the G2 of grid balance inductance have received on the demultiplexer, and input signal becomes Signal Separation through demultiplexer the signal of a plurality of identical and mutual isolation.All installed a kind of control circuit 2 additional between the grid of each power switch and the drain electrode, the effect of this control circuit 2 is to play amplitude limit and anti-interference effect, and the effect of grid balance inductance is identical with Fig. 1.
Shown in the accompanying drawing 4, it is the drive unit circuit diagram of a plurality of power switch parallel connections, power switch ug1 ... the drain electrode of ug4 is connected in parallel, drawing an end E1 receives on the demultiplexer, power switch ug1 ... the source electrode of ug4 is connected in parallel, wherein per two power switch ug1 and ug3 have received the output ends A of grid balance inductance L1 respectively by a resistance, on the B, the grid of two power switch ug2 is connected to the C of grid balance inductance L2 output by a resistance in addition, power switch ug4 is connected on the F of grid balance inductance L3 output by a resistance, the input two ends of grid balance inductance have been received the D end of grid balance inductance L2 and the E end of L3 respectively, the G1 of the input of grid balance inductance L2 and L3, G2, G3, G4 has guided on the demultiplexer respectively, demultiplexer is separated into input signal the signal of a plurality of identical and mutual isolation, a kind of control circuit 2 has all been installed in grid and drain electrode at each power switch additional, this control circuit plays amplitude limit, anti-interference effect. the grid balance inductance L1 in the middle of the circuit, L2, the effect of L3 is to make the grid of the power switch electric current of flowing through keep identical in time, reach balance, the time of turning on and off is consistent, and the turn ratio of the balance inductance here is 1: 1.
Claims (2)
1. the drive unit of a power switch is characterized in that: be made up of control circuit (2), grid balance inductance (3) and demultiplexer (4); Control circuit (2) is made up of two voltage-stabiliser tubes and two resistance; The input termination demultiplexer (4) of grid balance inductance (3); A resistance is connected between the grid and drain electrode of power switch (1); After the positive pole series connection of two voltage-stabiliser tubes, a negative pole connects the grid of power switch (1), and another negative pole connects the drain electrode of power switch (1); Wherein two voltage-stabiliser tubes become parallel-connection structure with a resistance, and another resistance forms with this parallel-connection structure and connects, and the intermediate point that the structure of wherein going here and there connects structure links to each other with the grid of power switch (1); The drain electrode of power switch (1) is connected with demultiplexer.
2. the drive unit of power switch according to claim 1, it is characterized in that: the turn ratio of described grid balance inductance is 1: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610043804A CN1838536B (en) | 2006-04-17 | 2006-04-17 | Power switch driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610043804A CN1838536B (en) | 2006-04-17 | 2006-04-17 | Power switch driving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1838536A CN1838536A (en) | 2006-09-27 |
| CN1838536B true CN1838536B (en) | 2010-05-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610043804A Active CN1838536B (en) | 2006-04-17 | 2006-04-17 | Power switch driving device |
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| Country | Link |
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| CN (1) | CN1838536B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8829949B2 (en) * | 2012-01-17 | 2014-09-09 | Franc Zajc | Method and apparatus for driving a voltage controlled power switch device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5970964A (en) * | 1995-12-18 | 1999-10-26 | Fuji Electric Co., Ltd. | Circuit device for igniting internal combustion engine and semiconductor device for igniting internal combustion engine |
| JP2004048843A (en) * | 2002-07-09 | 2004-02-12 | Meidensha Corp | Drive circuit of voltage driving type power element |
| CN2901702Y (en) * | 2006-04-17 | 2007-05-16 | 山东新风光电子科技发展有限公司 | Driving device of power switch |
-
2006
- 2006-04-17 CN CN200610043804A patent/CN1838536B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5970964A (en) * | 1995-12-18 | 1999-10-26 | Fuji Electric Co., Ltd. | Circuit device for igniting internal combustion engine and semiconductor device for igniting internal combustion engine |
| JP2004048843A (en) * | 2002-07-09 | 2004-02-12 | Meidensha Corp | Drive circuit of voltage driving type power element |
| CN2901702Y (en) * | 2006-04-17 | 2007-05-16 | 山东新风光电子科技发展有限公司 | Driving device of power switch |
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| Publication number | Publication date |
|---|---|
| CN1838536A (en) | 2006-09-27 |
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Owner name: XINFENGGUANG ELECTRONICS TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANDONG XINFENG PHOTOELECTRIC SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
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Address after: County Road 272500 square Shandong city of Jining province Wenshang County No. 2 Patentee after: Shandong Xinfengguang Electronic Technology Development Co., Ltd. Address before: County Road 272500 square Shandong city of Jining province Wenshang County No. 2 Patentee before: Shandong Xinfeng Photoelectric Science & Technology Development Co., Ltd. |