CN203574531U - A mos transistor drive circuit based on high-frequency oscillation signals - Google Patents
A mos transistor drive circuit based on high-frequency oscillation signals Download PDFInfo
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- CN203574531U CN203574531U CN201320619936.3U CN201320619936U CN203574531U CN 203574531 U CN203574531 U CN 203574531U CN 201320619936 U CN201320619936 U CN 201320619936U CN 203574531 U CN203574531 U CN 203574531U
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- 230000010355 oscillation Effects 0.000 title claims abstract description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 239000003990 capacitor Substances 0.000 abstract description 14
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004520 electroporation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
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Abstract
The utility model discloses a mos transistor drive circuit based on high-frequency oscillation signals. The mos transistor drive circuit comprises a triangular wave modulation amplifying circuit and a bootstrap boost rectifying circuit; the triangular wave modulation amplifying circuit comprises a first triode, a second triode, a first resistor, a second resistor and a third resistor; the bootstrap boost rectifying circuit comprises a first capacitor, a second capacitor, a first diode and a second diode; and the cathode of the first diode is connected with one terminal of a driving resistor, the other terminal of the driving resistor is connected with the grid electrode of a mos transistor, the source electrode of the mos transistor is connected to an output terminal, and the drain electrode of the mos transistor is connected to an input terminal. A driving mode based on the high-frequency oscillation signals is adopted, a stable DC driving voltage can be obtained through a simple circuit group, one mos transistor can be independently driven, and the circuit can be widely used. GS voltage of the mos transistor can be always maintained in a certain range by utilization of the bootstrap boost circuit, and circuit structure is largely simplified.
Description
Technical field
The utility model belongs to electroporation field, is specifically related to a kind of mos tube drive circuit based on high-frequency oscillation signal.
Background technology
As everyone knows, power supply is in the process of using, unexpected variation, the noise of input, the problems such as pulsation of electrical network due to heavy load, in circuit, at every moment all can have the possibility of various surge impact voltages, these surge voltages have buried hidden danger to undoubtedly the normal work of power supply, in order to eliminate these hidden danger, just need to use overvoltage surge to suppress circuit, when overvoltage surge occurs, circuit can guarantee voltage clamp the normal work of late-class circuit in the scope of safety with this.For volume and cost control being arrived to minimum, the UC3843 chip that peripheral cell is few is an extraordinary selection, utilizes additional booster circuit, and the driving voltage of chip output is raise, and reaches the object of the main clamp mos pipe in drive circuit.
Conventional scheme is to utilize high-frequency signal at present, after cockcroft-walton voltage multiplier, to mos pipe, provide stable driving DC voltage, but because UC3843 chip itself only has an output, therefore can only drive main clamp mos pipe, can not drive two mos pipe, and then this inhibition circuit the effect that suppresses overvoltage surge can only be played simultaneously, other functions cannot be realized again.The surge voltage-suppressing circuit of the type is used cockcroft-walton voltage multiplier in addition, and driving voltage is a fixing value, manages like this restriction of intrinsic GS voltage parameter due to mos, and input voltage range is not easy to do wide.
Utility model content
The purpose of this utility model is in order to solve technical problem of the prior art, and a kind of mos tube drive circuit based on high-frequency oscillation signal is provided.
In order to achieve the above object, the utility model is by the following technical solutions: a kind of mos tube drive circuit based on high-frequency oscillation signal, comprise triangular modulation amplifying circuit and Bootstrap rectification circuit, described triangular modulation amplifying circuit comprises the first triode, the second triode, the first resistance, the second resistance and the 3rd resistance, the base stage of described the first triode is connected with the circuit that can produce high-frequency oscillation signal, the collector electrode of the first triode is connected with one end of the first resistance and is connected to the positive pole of power supply, the other end of the first resistance is connected with the collector electrode of the second triode, the emitter of the second triode is connected and ground connection with one end of the second resistance, the other end of the second resistance is connected with one end of the 3rd resistance with the base stage of the second triode respectively, the other end of the 3rd resistance is connected with the emitter of the first triode, described Bootstrap rectification circuit comprises the first electric capacity, the second electric capacity, the first diode and the second diode, one end of the first electric capacity is connected with the collector electrode of the second triode, the other end of the first electric capacity is connected with the positive pole of the first diode, the negative pole of the first diode is connected with one end of the second electric capacity, the other end of the second electric capacity is connected and is connected to output with the positive pole of the second diode, the negative pole of the second diode is connected with the positive pole of the first diode, the negative pole of the first diode is connected with driving one end of resistance, drive the other end of resistance to be connected with the grid of mos pipe, the source electrode of mos pipe is connected to output, the drain electrode of mos pipe is connected to input.
As further improvement of the utility model, the two ends of described the second electric capacity are parallel with voltage stabilizing didoe, and the positive pole of voltage stabilizing didoe is connected with the positive pole of the second diode, and the negative pole of voltage stabilizing didoe is connected with the negative pole of the first diode.
As further improvement of the utility model, the described circuit that can produce high-frequency oscillation signal is the circuit based on UC3843 chip.
As further improvement of the utility model, 4 pin of the base stage of described the first triode and UC3843 chip are connected.
The relative prior art of the utility model has following beneficial effect: the utility model is in surge voltage inhibit feature, the type of drive of employing based on high-frequency oscillation signal, be different from the mode of traditional 6 pin drive ends, utilize the PWM chip (for example UC3843 chip) simply with outside vibration terminal, by simple set of circuits, just can obtain stable driving DC voltage, can drive separately a mos pipe, so just for circuit provides purposes more widely.The utilization of bootstrap type booster circuit in addition, by the boot strap of the second electric capacity, can maintain within limits mos pipe GS voltage all the time, makes input voltage range can reach four multiplication of voltages of 9V～36V, has simplified greatly line construction.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1-2, a kind of mos tube drive circuit based on high-frequency oscillation signal, comprise triangular modulation amplifying circuit and Bootstrap rectification circuit, triangular modulation amplifying circuit comprises the first triode T1, the second triode T2, the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3, the base stage of the first triode T1 is connected with the circuit that can produce high-frequency oscillation signal, the collector electrode of the first triode T1 is connected with one end of the first resistance R 1 and is connected to the anodal Vcc of power supply, the other end of the first resistance R 1 is connected with the collector electrode of the second triode T2, the emitter of the second triode T2 is connected and ground connection with one end of the second resistance R 2, the other end of the second resistance R 2 is connected with one end of the 3rd resistance R 3 with the base stage of the second triode T2 respectively, the other end of the 3rd resistance R 3 is connected with the emitter of the first triode T1, Bootstrap rectification circuit comprises the first capacitor C 1, the second capacitor C 2, the first diode D1 and the second diode D2, one end of the first capacitor C 1 is connected with the collector electrode of the second triode T2, the other end of the first capacitor C 1 is connected with the positive pole of the first diode D1, the negative pole of the first diode D1 is connected with one end of the second capacitor C 2, the other end of the second capacitor C 2 is connected and is connected to output end vo ut+ with the positive pole of the second diode D2, the negative pole of the second diode D2 is connected with the positive pole of the first diode D1, the negative pole of the first diode D1 is connected with driving one end of resistance R 4, drive the other end of resistance R 4 to be connected with the grid of mos pipe T3, the source electrode of mos pipe T3 is connected to output end vo ut+, the drain electrode of mos pipe T3 is connected to input Vin+, the two ends of the second capacitor C 2 are parallel with voltage stabilizing didoe DZ1, the positive pole of voltage stabilizing didoe DZ1 is connected with the positive pole of the second diode D2, the negative pole of voltage stabilizing didoe DZ1 is connected with the negative pole of the first diode D1, the circuit that can produce high-frequency oscillation signal is the circuit based on UC3843 chip, 4 pin of the base stage of the first triode T1 and UC3843 chip are connected.
During work, when the high-frequency oscillation signal (triangular wave) of 4 pin of UC3843 is after the first triode T1 amplifies, by the bleeder circuit of the second resistance R 2, the 3rd resistance R 3, drive the second triode T2 work, the collector electrode of the second triode T2 produces high frequency chopping (square wave), and frequency is identical with triangular wave, amplitude is supply voltage, supply voltage can be with the supply power voltage of UC3843 chip 7 pin, supposes that this voltage gets 10V, and the amplitude of square wave also can reach 10V like this.When square wave amplitude is 0V, the second diode D2 conducting, the first diode D1 cut-off, output end vo ut by the second diode D2 by be charged to+Vout of the voltage of the first capacitor C 1; When square wave amplitude is 10V, voltage in the first capacitor C 1 is 10V and+value after Vout is added, the first diode D1 conducting, the second diode D2 cut-off, the second capacitor C 2 starts charging, the voltage at such the second capacitor C 2 two ends will maintain 10V left and right, if consider the conduction voltage drop of diode, getting diode current flow pressure drop is here 0.7V, in figure, two diode drops are just 1.4V, therefore the voltage in actual the second capacitor C 2 is 10-1.4=8.6V, finally by driving resistance R 4 to drive mos to manage.Voltage stabilizing didoe DZ1 is used for protecting mos pipe, prevents that mos pipe GS both end voltage is too high.
Claims (4)
1. the mos tube drive circuit based on high-frequency oscillation signal, it is characterized in that: comprise triangular modulation amplifying circuit and Bootstrap rectification circuit, described triangular modulation amplifying circuit comprises the first triode (T1), the second triode (T2), the first resistance (R1), the second resistance (R2) and the 3rd resistance (R3), the base stage of described the first triode (T1) is connected with the circuit that can produce high-frequency oscillation signal, the collector electrode of the first triode (T1) is connected with one end of the first resistance (R1) and is connected to the positive pole of power supply, the other end of the first resistance (R1) is connected with the collector electrode of the second triode (T2), the emitter of the second triode (T2) is connected and ground connection with one end of the second resistance (R2), the other end of the second resistance (R2) is connected with one end of the 3rd resistance (R3) with the base stage of the second triode (T2) respectively, the other end of the 3rd resistance (R3) is connected with the emitter of the first triode (T1), described Bootstrap rectification circuit comprises the first electric capacity (C1), the second electric capacity (C2), the first diode (D1) and the second diode (D2), one end of the first electric capacity (C1) is connected with the collector electrode of the second triode (T2), the other end of the first electric capacity (C1) is connected with the positive pole of the first diode (D1), the negative pole of the first diode (D1) is connected with one end of the second electric capacity (C2), the other end of the second electric capacity (C2) is connected and is connected to output with the positive pole of the second diode (D2), the negative pole of the second diode (D2) is connected with the positive pole of the first diode (D1), the negative pole of the first diode (D1) is connected with driving one end of resistance (R4), drive the other end of resistance (R4) to be connected with the grid of mos pipe (T3), the source electrode of mos pipe (T3) is connected to output, the drain electrode of mos pipe (T3) is connected to input.
2. the mos tube drive circuit based on high-frequency oscillation signal according to claim 1, it is characterized in that: the two ends of described the second electric capacity (C2) are parallel with voltage stabilizing didoe (DZ1), the positive pole of voltage stabilizing didoe (DZ1) is connected with the positive pole of the second diode (D2), and the negative pole of voltage stabilizing didoe (DZ1) is connected with the negative pole of the first diode (D1).
3. the mos tube drive circuit based on high-frequency oscillation signal according to claim 1 and 2, is characterized in that: the described circuit that can produce high-frequency oscillation signal is the circuit based on UC3843 chip.
4. the mos tube drive circuit based on high-frequency oscillation signal according to claim 3, is characterized in that: the base stage of described the first triode (T1) is connected with 4 pin of UC3843 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619936.3U CN203574531U (en) | 2013-10-09 | 2013-10-09 | A mos transistor drive circuit based on high-frequency oscillation signals |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320619936.3U CN203574531U (en) | 2013-10-09 | 2013-10-09 | A mos transistor drive circuit based on high-frequency oscillation signals |
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| CN203574531U true CN203574531U (en) | 2014-04-30 |
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| CN201320619936.3U Expired - Fee Related CN203574531U (en) | 2013-10-09 | 2013-10-09 | A mos transistor drive circuit based on high-frequency oscillation signals |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099176A (en) * | 2015-08-28 | 2015-11-25 | 浙江嘉科新能源科技有限公司 | A Circuit Using Charge Pump to Realize Driving Power |
| CN107086783A (en) * | 2017-05-31 | 2017-08-22 | 四川巧夺天工信息安全智能设备有限公司 | A kind of high-power switching circuit |
| CN107612535A (en) * | 2017-10-31 | 2018-01-19 | 东莞博力威电池有限公司 | Improve the exciting circuit of power field effect pipe driving voltage |
| CN108551714A (en) * | 2018-05-03 | 2018-09-18 | 珠海市睿影科技有限公司 | High-frequency signal control circuit and X-ray machine for X-ray emitter |
| CN112039510A (en) * | 2020-07-30 | 2020-12-04 | 广东美的白色家电技术创新中心有限公司 | Bootstrap circuit for high-voltage integrated chip, intelligent power module and electrical equipment |
| CN116054115A (en) * | 2023-03-31 | 2023-05-02 | 成都新欣神风电子科技有限公司 | Surge voltage suppression and reverse connection prevention circuit |
-
2013
- 2013-10-09 CN CN201320619936.3U patent/CN203574531U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099176A (en) * | 2015-08-28 | 2015-11-25 | 浙江嘉科新能源科技有限公司 | A Circuit Using Charge Pump to Realize Driving Power |
| CN107086783A (en) * | 2017-05-31 | 2017-08-22 | 四川巧夺天工信息安全智能设备有限公司 | A kind of high-power switching circuit |
| CN107086783B (en) * | 2017-05-31 | 2023-08-22 | 四川巧夺天工信息安全智能设备有限公司 | High-power switch circuit |
| CN107612535A (en) * | 2017-10-31 | 2018-01-19 | 东莞博力威电池有限公司 | Improve the exciting circuit of power field effect pipe driving voltage |
| CN108551714A (en) * | 2018-05-03 | 2018-09-18 | 珠海市睿影科技有限公司 | High-frequency signal control circuit and X-ray machine for X-ray emitter |
| CN112039510A (en) * | 2020-07-30 | 2020-12-04 | 广东美的白色家电技术创新中心有限公司 | Bootstrap circuit for high-voltage integrated chip, intelligent power module and electrical equipment |
| CN112039510B (en) * | 2020-07-30 | 2024-05-03 | 广东美的白色家电技术创新中心有限公司 | Bootstrap circuit for high-voltage integrated chip, intelligent power module and electrical equipment |
| CN116054115A (en) * | 2023-03-31 | 2023-05-02 | 成都新欣神风电子科技有限公司 | Surge voltage suppression and reverse connection prevention circuit |
| CN116054115B (en) * | 2023-03-31 | 2023-10-03 | 成都新欣神风电子科技有限公司 | Surge voltage suppression and reverse connection prevention circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20191009 |