CN105162442A - Power tube driving integrated circuit - Google Patents
Power tube driving integrated circuit Download PDFInfo
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- CN105162442A CN105162442A CN201510667440.7A CN201510667440A CN105162442A CN 105162442 A CN105162442 A CN 105162442A CN 201510667440 A CN201510667440 A CN 201510667440A CN 105162442 A CN105162442 A CN 105162442A
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Abstract
The invention discloses a power tube driving integrated circuit. The signal input terminal of the integrated circuit is in connection with a control unit so as to receive the driving signal of driving a power tube from the control unit; and the signal output terminal of the integrated circuit is in connection with the power tube so as to connect / disconnect the power tube under the effect of the driving signal, wherein the signal input side of the integrated circuit is provided with a control earth terminal in electric connection with the ground wire of the control unit; and the signal output side is provided with a power earth terminal in electric connection with the emitter or source of the power tube. The power tube driving integrated circuit integrates discrete devices on a single IC, thereby reducing peripheral device costs, and improving the reliability of a whole machine; even more important, the signal input side and the signal output side are respectively provided with an earth port for connecting with the control unit and a driven power tube; the control earth terminal and the power earth terminal are separated, thereby effectively obtaining a smooth driving power tube conduction curve.
Description
Technical field
The present invention relates to a kind of drive circuit of power tube, particularly relate to a kind of power tube drive integrated circult obtaining level and smooth driving power pipe conducting curve.
Background technology
The driving of the power tube (as IGBT, power NMOS tube etc.) on market today adopts two kinds of type of drive more, and one adopts discrete device to drive, and another kind is then adopt IC integrated circuit to drive.For adopting the front scheme of planting discrete device and driving, it at least needs employing 3 triodes and the driving of some resistance realization to power tube, then owing to comparing dispersion, underintegration is high, so cause PCB surface shared by it long-pending larger, and device pad is more, solder joint processing fraction defective is also higher, therefore have impact on very greatly its use commercially; For the scheme adopting integrated circuit to drive, it is slow to there is actuating speed in it, and driving power tube grid curve is unsmooth, there is potential safety hazard to the work of power tube, easily causes power tube to burn.
Summary of the invention
The object that the present invention is directed to the above-mentioned defect of existing power tube drive circuit is to provide a kind of novel power tube integrated drive electronics, and it, compared to adopting integrated level the scheme of discrete component high, and has the fast advantage of actuating speed; And compared to present integrated circuit drive scheme, due to the ground wire as input and output is entered isolation design, driving power tube grid smoothness of curve is improved, because this eliminating the potential safety hazard that power tube work exists.
The object of the invention is to realize by the following technical solutions:
A kind of power tube drive integrated circult, the signal input part connection control unit of described integrated circuit, to receive the drive singal from the driving power pipe of described control unit, the signal output part of described integrated circuit connects described power tube, with the effect at described drive singal, break-make is carried out to described power tube, wherein, described integrated circuit is provided with the control earth terminal be electrically connected with the ground wire of described control unit at signal input side, be provided with the power earth terminal be electrically connected with described power tube emitter or source electrode at signal outlet side.
Preferably, described integrated circuit comprises: switch element, the first driver element and the second driver element; Wherein
Described switch element is connected to power end and controls between earth terminal, and control end is the signal input part of described integrated circuit, to receive described drive singal; Described first driver element and the second driver element adopt compound NPN type pipe and compound positive-negative-positive pipe to form respectively, and power end and power terminations hold between form series connection, the control end of described first driver element and the second driver element is electrically connected with the signal output part of described switch element, and series connection place of described first driver element and the second driver element forms the signal output part of described integrated circuit; Wherein, after described switch element receives described drive singal, export corresponding level signal and make only have one to carry out drive amplification to this level signal between described first driver element and the second driver element, and export at the signal output part of described integrated circuit.
Preferably, described switch element adopts NPN type first triode to form, wherein
The base stage of described first triode outwards consists of the signal input part of described integrated circuit the first resistance, emitter is electrically connected with control earth terminal, collector electrode is connected with the negative electrode of the first diode, and the anode of described first diode is connected to power end by the second resistance.
Preferably, described first driver element adopts NPN type second triode, NPN type the 3rd triode is composited, and
Collector electrode after compound is connected to power end, and what base stage was connected to the first diode and the second resistance is connected in series a little, and emitter outwards forms the signal output part of described integrated circuit by the 3rd resistance.
Preferably, described second driver element adopts positive-negative-positive the 4th triode, NPN type the 5th triode is composited, and
Collector electrode after compound is electrically connected with the emitter after compound in described first driver element, base stage is electrically connected with the emitter of the second triode in the first transistor collector of described switch element, described first driver element, emitter is connected to power earth terminal, and the base stage of described 5th triode is also electrically connected with control earth terminal by the 4th resistance.
Preferably, in described second driver element, the base stage after compound is connected with the negative electrode of the second diode, and is electrically connected with the emitter of the second triode in described first driver element through the anode of described second diode.
Preferably, in described second driver element, the collector electrode after compound and be also connected with the 5th resistance between emitter.
Preferably, described integrated circuit also comprises:
Antistatic protection unit, it comprises: adopt the 3rd diode of ESD diode, the 4th diode and the 5th diode, wherein
Described 3rd diode anode is electrically connected with the collector electrode after compound in described first driver element, and negative electrode is electrically connected with the emitter after compound in described first driver element;
After described 4th diode is connected with the anode of the 5th diode, negative electrode is electrically connected with the signal input part of described integrated circuit and power end respectively.
Preferably, described integrated circuit is also connected with the 6th resistance as pull-up resistor at its signal input part.
Preferably, described integrated circuit by case package, and outwards provides power end pin, signal input part pin, signal output part pin, controls earth terminal pin and power earth terminal pin.
Owing to have employed technique scheme, the present invention has the following advantages:
Power tube drive integrated circult of the present invention has following characteristics: low static working current, wide power voltage scope, switching speed are fast, input signal directly connects out features such as leaking output.Specifically:
1, the present invention is the high-speed driving of driving power pipe design, is integrated in by discrete device among monolithic IC, peripheral components cost is reduced, and whole aircraft reliability improves; 2, this circuit drives owing to have employed multiple tube, therefore possesses larger current driving ability, and driving power pipe switching speed is less than 1us; 3, level and smooth driving power pipe conducting curve is obtained by control end ground wire and power end ground wire being carried out isolation design; 4, this integrated circuit input end directly can connect open and leak output signal.
Accompanying drawing explanation
Fig. 1 is the application circuit figure of power tube drive integrated circult of the present invention;
Fig. 2 is the inside schematic diagram of power tube drive integrated circult of the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reach object and effect clearly and be easy to understand, below in conjunction with the drawings and specific embodiments, the present invention is further elaborated:
As shown in Figure 1-2, the invention provides a kind of power tube drive integrated circult, the signal input part Vin connection control unit 100 of described integrated circuit 200, to receive the drive singal from the driving power pipe of described control unit, the signal output part Vout of described integrated circuit 200 connects described power tube POWER, with the effect at described drive singal, break-make is carried out to described power tube, wherein, described integrated circuit 200 is provided with the control earth terminal GNDA be electrically connected with the ground wire of described control unit at signal input side, the power earth terminal GNDP be electrically connected with described power tube emitter or source electrode is provided with at signal outlet side.
In such scheme, described power tube can adopt insulated gate bipolar transistor (IGBT pipe), also can adopt N-type MOS (metal-oxide-semiconductor) transistor (NMOS tube).When adopting IGBT pipe, its emitter is electrically connected with the power earth terminal GNDP of described integrated circuit; When adopting NMOS tube, its source electrode is electrically connected with the power earth terminal GNDP of described integrated circuit.Wherein the emitter of IGBT pipe also can be referred to as source electrode.And described power tube is not limited to above-mentioned two kinds, can select according to actual conditions.
As can be seen here, the ground wire be connected with front-end control unit and the ground wire that is connected with rear end power tube have been carried out isolation design by integrated circuit of the present invention, and do not adopt same ground wire, make can not influence each other between input and output, and then ensure that the power tube driving curve of output is smoother, be unlikely to occur interference, the inside schematic diagram that content combines below is more specifically analyzed.
See Fig. 2, the present invention further technical scheme is, described integrated circuit 200 comprises: switch element 210, first driver element 220 and the second driver element 230; Wherein
Described switch element 210 is connected to power end VCC and controls between earth terminal GNDA, and the signal input part Vin that control end (namely controlling the signal end of this switch element) is described integrated circuit 200, to receive described drive singal;
Described first driver element 220 and the second driver element 230 adopt compound NPN type pipe and compound positive-negative-positive pipe to form respectively, and hold between GNDP form series connection at power end VCC and power terminations, the control end of described first driver element 220 and the second driver element 230 is electrically connected with the signal output part of described switch element 210, and series connection place of described first driver element 220 and the second driver element 230 forms the signal output part Vout of described integrated circuit 200; Wherein, after described switch element 210 receives described drive singal, export corresponding level signal and make only have one to carry out drive amplification to this level signal between described first driver element 220 and the second driver element 230, and export at the signal output part Vout of described integrated circuit 200.Here, integrated circuit of the present invention adopts multiple tube to drive, and therefore possess larger current driving ability, the switching speed of driving power pipe is less than 1us.
In technique scheme, described switch element 210 is according to the drive singal from control unit 100 received, carry out break-make switching, and when it disconnects or switches between conducting, the work between the first driver element 220 and the second driver element 230 can be made to carry out switching (drive singal namely from control unit only can make one of them driver element work), and then export corresponding high level drive singal or low level drive singal at signal output part Vout, and then whether control power tube POWER by driving conducting.Simultaneously, also can see from such scheme, and composition graphs 2 is known, what integrated circuit of the present invention connected switch element 210 connection of input (control unit 100) is control earth terminal GNDA, and to connect what export that first driver element 220 of (power tube POWER) is connected with the second driver element 230 be power earth terminal GNDP, constrained input is completely isolated, and this just constitutes the ground wire isolation of control unit 100 and power tube POWER.
Specifically, described switch element 210 adopts NPN type first triode N1 to form, the base stage b1 of wherein said first triode N1 outwards consists of the signal input part Vin of described integrated circuit 200 the first resistance R1, emitter e 1 is electrically connected with control earth terminal GNDA, collector electrode c1 is connected with the negative electrode of the first diode D1, and the anode of described first diode D1 is connected to power end VCC by the second resistance R2.When described integrated circuit 200 signal input part Vin input high level or unsettled time, the first triode N1 conducting, and in its collector terminal c1 output low level; When the signal input part Vin input low level of described integrated circuit 200, the first triode N1 disconnects, and exports high level at its collector terminal c1.Here, this first triode N1 mainly plays the effect the first driver element 220 and the second driver element 230 being carried out to work selection, be carry out work because its through and off determine which driver element in two driver elements, the unit therefore formed is referred to as switch element.
Wherein, described first driver element 220 adopts NPN type second triode N2, NPN type the 3rd triode N3 is composited, and the collector electrode c2 after compound is connected to power end VCC, what base stage b2 was connected to the first diode D2 and the second resistance R2 is connected in series a little, and emitter e 2 outwards forms the signal output part Vout of described integrated circuit by the 3rd resistance R3.Described second driver element 230 adopts positive-negative-positive the 4th triode P1, NPN type the 5th triode N4 is composited, and the collector electrode c3 after compound is electrically connected with the emitter e 2 after compound in described first driver element 220, the emitter e of the second triode N2 in base stage b3 and the first triode N1 collector electrode c1 of described switch element 210, described first driver element 220
n2electrical connection, emitter e 3 is connected to power earth terminal GNDP, the base stage b of described 5th triode N4
n4also be electrically connected with control earth terminal GNDA by the 4th resistance R4.Wherein, the design of the 3rd resistance R3 guarantees that output current is unlikely to excessive, can avoid the instability causing power supply VCC.
From foregoing circuit, first driver element 220 of NPN composite tube type and the second driver element 230 of PNP composite tube type define series relationship between power end VCC and power earth terminal GNDP, and the two control end b2, b3 all connect the signal output part (i.e. collector electrode c1) of breaker in middle unit: when collector electrode c1 exports as time high, second triode N2, the 3rd triode N3 conducting, first driver element work, and then export high level at the signal output part Vout of integrated circuit 200; When collector electrode c1 exports as time low, the 4th triode P1, the 5th triode N4 conducting, the second driver element work, and then in the signal output part Vout output low level of integrated circuit 200.And power tube POWER high level conducting still low level conducting be by different power tube characteristics determine.
Wherein, above-mentionedly to mention, when the collector electrode c1 of switch element exports as time high, the signal output part Vout of integrated circuit 200 exports high level, need in described second driver element, the collector electrode c3 after compound and be connected with the 5th resistance R5 between emitter e 3 and realize, see Fig. 2.
Preferably, in described second driver element, the base stage b2 after compound is connected with the negative electrode of the second diode D2, and the emitter e of the second triode N2 in the anode and described first driver element 220 of described second diode D2
n2electrical connection.The effect of the first diode D1 mentioned in the second diode D2 here and such scheme mainly guarantees that N3, N2 do not enter dark saturation condition, can optimize the switching speed improving N3, N2, thus improves the speed of driving power pipe.
On the basis of technique scheme, as shown in Figure 2, integrated circuit of the present invention also comprises: antistatic protection unit, and it comprises: the 3rd diode D3, the 4th diode D4 and the 5th diode D5 that adopt ESD diode, wherein
Described 3rd diode D3 anode is electrically connected with the collector electrode c2 after compound in described first driver element 220, and negative electrode is electrically connected with the emitter e 2 after compound in described first driver element 220; After described 4th diode D4 is connected with the anode of the 5th diode D5, negative electrode is electrically connected with the signal input part Vin of described integrated circuit 200 and power end VCC respectively.Because D3, D4, D5 all adopt ESD (Electro-static Driven Comb) diode, and be arranged on the suitable position of integrated circuit of the present invention, ensure that the antistatic effect that circuit is good very well.
Participate in Fig. 2, described integrated circuit 200 is also connected with the 6th resistance R6 as pull-up resistor at its signal input part Vin.This pull-up resistor R5 can guarantee that output end vo ut is low level when powered on moment input no signal, and guaranteed output pipe is in off state.And because input connects pull-up resistor R5, input directly can connect open to leak and export, be convenient to directly be connected with controller 100 conventional on the market.
Integrated circuit of the present invention by case package, and outwards provides power end VCC pin, signal input part Vin pin, signal output part Vout pin, controls earth terminal GNDA pin and power earth terminal GNDP pin.See Fig. 1, signal input part pin Vin receives the control signal that controller 100 inputs, and 1 power pins meets power end VCC, and 1 pin GNDA in analog, 1 Power Groud pin GNDP, output pin Vout connect the grid (G) of power tube POWER.
Generally speaking, the operation principle of integrated circuit of the present invention is: (1) when signal input part Vin is unsettled or for high level time, the conducting of N1 pipe, N2, N3 pipe turn off, the conducting of P1, N4 pipe, output end vo ut output low level; (2) when signal input part Vin is low level, N1 pipe turns off, the conducting of N2, N3 pipe, and P1, N4 pipe turns off, and output end vo ut exports high level.
Wherein, if controller 100 independent grounding, power tube POWER and GNDA, GNDP are altogether, power tube POWER operationally has big current to flow through, can voltage difference be there is in the dead resistance existed between power tube pin E end with ground, suppose that this pressure reduction is VRS, and signal input part voltage equal Vin-VRS, VRS changes with the change of power tube current, and signal input part voltage can be caused to there is interference.
If GNDA and control unit 100 are altogether, GNDP and power tube POWER altogether time, can guarantee that signal input part voltage equals Vin, not by VRS voltage disturbance, thus make the VGS voltage waveform of driving power pipe level and smooth.In other words, when exporting with when inputting altogether, the dead resistance of output will have influence on the ground wire of input, causes signal input part voltage to be affected, and input determines output, and then output is fluctuated, and makes the VGS voltage of power tube there is interference.Therefore the present invention obtains level and smooth driving power pipe conducting curve by control end ground wire GNDA and power end ground wire GNDP is carried out isolation design.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (10)
1. a power tube drive integrated circult, the signal input part connection control unit of described integrated circuit, to receive the drive singal from the driving power pipe of described control unit, the signal output part of described integrated circuit connects described power tube, with the effect at described drive singal, break-make is carried out to described power tube, it is characterized in that, described integrated circuit is provided with the control earth terminal be electrically connected with the ground wire of described control unit at signal input side, be provided with the power earth terminal be electrically connected with described power tube emitter or source electrode at signal outlet side.
2. power tube drive integrated circult as claimed in claim 1, it is characterized in that, described integrated circuit comprises: switch element, the first driver element and the second driver element; Wherein
Described switch element is connected to power end and controls between earth terminal, and control end is the signal input part of described integrated circuit, to receive described drive singal; Described first driver element and the second driver element adopt compound NPN type pipe and compound positive-negative-positive pipe to form respectively, and power end and power terminations hold between form series connection, the control end of described first driver element and the second driver element is electrically connected with the signal output part of described switch element, and series connection place of described first driver element and the second driver element forms the signal output part of described integrated circuit; Wherein, after described switch element receives described drive singal, export corresponding level signal and make only have one to carry out drive amplification to this level signal between described first driver element and the second driver element, and export at the signal output part of described integrated circuit.
3. power tube drive integrated circult as claimed in claim 2, is characterized in that, described switch element adopts NPN type first triode to form, wherein
The base stage of described first triode outwards consists of the signal input part of described integrated circuit the first resistance, emitter is electrically connected with control earth terminal, collector electrode is connected with the negative electrode of the first diode, and the anode of described first diode is connected to power end by the second resistance.
4. power tube drive integrated circult as claimed in claim 3, is characterized in that, described first driver element adopts NPN type second triode, NPN type the 3rd triode is composited, and
Collector electrode after compound is connected to power end, and what base stage was connected to the first diode and the second resistance is connected in series a little, and emitter outwards forms the signal output part of described integrated circuit by the 3rd resistance.
5. power tube drive integrated circult as claimed in claim 4, is characterized in that, described second driver element adopts positive-negative-positive the 4th triode, NPN type the 5th triode is composited, and
Collector electrode after compound is electrically connected with the emitter after compound in described first driver element, base stage is electrically connected with the emitter of the second triode in the first transistor collector of described switch element, described first driver element, emitter is connected to power earth terminal, and the base stage of described 5th triode is also electrically connected with control earth terminal by the 4th resistance.
6. power tube drive integrated circult as claimed in claim 5, it is characterized in that, in described second driver element, the base stage after compound is connected with the negative electrode of the second diode, and is electrically connected with the emitter of the second triode in described first driver element through the anode of described second diode.
7. the power tube drive integrated circult as described in claim 5 or 6, is characterized in that, in described second driver element, and the collector electrode after compound and be also connected with the 5th resistance between emitter.
8. the power tube drive integrated circult as described in any one of claim 1-6, is characterized in that, described integrated circuit also comprises:
Antistatic protection unit, it comprises: adopt the 3rd diode of ESD diode, the 4th diode and the 5th diode, wherein
Described 3rd diode anode is electrically connected with the collector electrode after compound in described first driver element, and negative electrode is electrically connected with the emitter after compound in described first driver element;
After described 4th diode is connected with the anode of the 5th diode, negative electrode is electrically connected with the signal input part of described integrated circuit and power end respectively.
9. power tube drive integrated circult as claimed in claim 8, it is characterized in that, described integrated circuit is also connected with the 6th resistance as pull-up resistor at its signal input part.
10. power tube drive integrated circult as claimed in claim 9, it is characterized in that, described integrated circuit by case package, and outwards provides power end pin, signal input part pin, signal output part pin, controls earth terminal pin and power earth terminal pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510667440.7A CN105162442B (en) | 2015-10-08 | 2015-10-08 | A kind of power tube drive integrated circult |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510667440.7A CN105162442B (en) | 2015-10-08 | 2015-10-08 | A kind of power tube drive integrated circult |
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| CN105162442A true CN105162442A (en) | 2015-12-16 |
| CN105162442B CN105162442B (en) | 2018-12-21 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395178A (en) * | 2017-07-04 | 2017-11-24 | 苏州捷芯威半导体有限公司 | Semiconductor power switch device and electronic equipment |
| CN107844075A (en) * | 2017-10-27 | 2018-03-27 | 上海歌尔泰克机器人有限公司 | A kind of ground wire ON-OFF control circuit and a kind of electronic equipment |
| CN113271089A (en) * | 2021-04-14 | 2021-08-17 | 杭州士兰微电子股份有限公司 | Grid driving circuit and intelligent power module thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194764A (en) * | 1989-12-14 | 1993-03-16 | Kabushiki Kaisha Toshiba | Data output buffer circuit for semiconductor integrated circuit having output buffers with different delays |
| JPH0795038A (en) * | 1993-09-20 | 1995-04-07 | Fujitsu Ltd | Semiconductor device |
| JPH0883909A (en) * | 1994-09-09 | 1996-03-26 | Mitsubishi Electric Corp | Semiconductor integrated circuit |
| CN1347568A (en) * | 1999-12-17 | 2002-05-01 | 皇家菲利浦电子有限公司 | Improved ESD diode structure |
| US20080238485A1 (en) * | 2005-08-19 | 2008-10-02 | Kabushiki Kaisha Toshiba | Semiconductor integrated circuit device |
| CN201947216U (en) * | 2011-03-18 | 2011-08-24 | 重庆中科芯亿达电子有限公司 | Drive integrated circuit of a DC motor of a toy lock set |
| CN202231413U (en) * | 2011-07-24 | 2012-05-23 | 重庆中科芯亿达电子有限公司 | Remote control toy aircraft tail rotor motor and steering gear motor driving circuit |
| CN202309495U (en) * | 2011-09-28 | 2012-07-04 | 深圳麦格米特电气股份有限公司 | MOSFET drive circuit |
| CN205051669U (en) * | 2015-10-08 | 2016-02-24 | 重庆中科芯亿达电子有限公司 | Power tube drive integrated circuit |
-
2015
- 2015-10-08 CN CN201510667440.7A patent/CN105162442B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5194764A (en) * | 1989-12-14 | 1993-03-16 | Kabushiki Kaisha Toshiba | Data output buffer circuit for semiconductor integrated circuit having output buffers with different delays |
| JPH0795038A (en) * | 1993-09-20 | 1995-04-07 | Fujitsu Ltd | Semiconductor device |
| JPH0883909A (en) * | 1994-09-09 | 1996-03-26 | Mitsubishi Electric Corp | Semiconductor integrated circuit |
| CN1347568A (en) * | 1999-12-17 | 2002-05-01 | 皇家菲利浦电子有限公司 | Improved ESD diode structure |
| US20080238485A1 (en) * | 2005-08-19 | 2008-10-02 | Kabushiki Kaisha Toshiba | Semiconductor integrated circuit device |
| CN201947216U (en) * | 2011-03-18 | 2011-08-24 | 重庆中科芯亿达电子有限公司 | Drive integrated circuit of a DC motor of a toy lock set |
| CN202231413U (en) * | 2011-07-24 | 2012-05-23 | 重庆中科芯亿达电子有限公司 | Remote control toy aircraft tail rotor motor and steering gear motor driving circuit |
| CN202309495U (en) * | 2011-09-28 | 2012-07-04 | 深圳麦格米特电气股份有限公司 | MOSFET drive circuit |
| CN205051669U (en) * | 2015-10-08 | 2016-02-24 | 重庆中科芯亿达电子有限公司 | Power tube drive integrated circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395178A (en) * | 2017-07-04 | 2017-11-24 | 苏州捷芯威半导体有限公司 | Semiconductor power switch device and electronic equipment |
| CN107395178B (en) * | 2017-07-04 | 2020-07-07 | 苏州捷芯威半导体有限公司 | Semiconductor power switching device and electronic apparatus |
| CN107844075A (en) * | 2017-10-27 | 2018-03-27 | 上海歌尔泰克机器人有限公司 | A kind of ground wire ON-OFF control circuit and a kind of electronic equipment |
| CN113271089A (en) * | 2021-04-14 | 2021-08-17 | 杭州士兰微电子股份有限公司 | Grid driving circuit and intelligent power module thereof |
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| Publication number | Publication date |
|---|---|
| CN105162442B (en) | 2018-12-21 |
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