CN114257069A - Amplitude limiting control method of high-voltage surge suppression circuit - Google Patents
Amplitude limiting control method of high-voltage surge suppression circuit Download PDFInfo
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- CN114257069A CN114257069A CN202011002093.3A CN202011002093A CN114257069A CN 114257069 A CN114257069 A CN 114257069A CN 202011002093 A CN202011002093 A CN 202011002093A CN 114257069 A CN114257069 A CN 114257069A
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- 230000001629 suppression Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention provides a high-voltage surge suppression circuit amplitude limiting control method, which comprises the following steps: the device comprises a power supply circuit, a voltage doubling circuit, a state detection control circuit, a surge detection switch circuit and a feedback circuit; when the state control circuit detects that the input is less than or equal to the set value of the state control circuit, the state detection control circuit turns on the voltage doubling circuit, turns off the surge detection switch circuit and outputs voltage following the input voltage; when the state control circuit detects that the input voltage is larger than or equal to the set value of the state control circuit, the state detection control circuit closes the voltage doubling circuit and opens the surge detection switch circuit, and when the output voltage is higher than the output set value, the feedback circuit starts to work, so that the output voltage is suppressed to the output set value through the feedback circuit.
Description
Technical Field
The invention relates to the technical field of power supply circuits, in particular to a high-voltage surge suppression circuit amplitude limiting control method.
Background
The existing surge suppression circuit mainly aims at the surge protection below low voltage 100V, and most of the amplitude limiting control circuits adopt a booster circuit to drive a series voltage regulator tube to stabilize the grid voltage of the amplitude limiting MOS tube so as to control the output voltage when the surge occurs; the low-voltage surge protection amplitude limiting control circuit is simple in circuit and low in cost, but the circuit is slow in response, the temperature coefficient of the voltage-stabilizing tube is large along with temperature change, the voltage-stabilizing tube directly causes the deviation of surge suppression voltage, and the requirements on the voltage-stabilizing value and the voltage-stabilizing precision of the voltage-stabilizing tube are higher when the low-voltage surge protection amplitude limiting control circuit is applied to a high-voltage environment.
Disclosure of Invention
In order to solve the above problem, the present invention provides a method for controlling the amplitude limiting of a high voltage surge suppression circuit.
The invention is realized by the following technical scheme:
the invention provides a high-voltage surge suppression circuit amplitude limiting control method, which comprises the following steps: the amplitude limiting control method of the high-voltage surge suppression circuit comprises the following steps: the device comprises a power supply circuit, a voltage doubling circuit, a state detection control circuit, a surge detection switch circuit and a feedback circuit;
when the state control circuit detects that the input is less than or equal to the set value of the state control circuit, the state detection control circuit turns on the voltage doubling circuit, turns off the surge detection switch circuit and outputs voltage following the input voltage;
when the state control circuit detects that the input voltage is larger than or equal to the set value of the state control circuit, the state detection control circuit closes the voltage doubling circuit and opens the surge detection switch circuit, and when the output voltage is higher than the output set value, the feedback circuit starts to work, so that the output voltage is suppressed to the output set value through the feedback circuit.
Furthermore, the state monitoring control circuit is provided with a comparator U1-A, an inverter U4, a voltage stabilizing source D1, a resistor R6 and a resistor R8, wherein a pin 1 of the comparator U1-A is electrically connected with the inverter U4, one end of the resistor R8 is electrically connected with a pin 3 of the comparator U1-A, and the other end of the resistor R8 is electrically connected with the resistor R6.
Further, the surge detection switch circuit includes MOS transistor Q1, diode D3, triode Q4, resistance R7, resistance R9, resistance R12 and resistance R13, 3 feet of MOS transistor Q1 with resistance R9 is connected electrically, 2 feet of MOS transistor Q1 with resistance R7 is connected electrically, 1 foot of triode Q4 is connected electrically with resistance R12, 3 feet of triode Q4 with resistance R13 is connected electrically.
Furthermore, the voltage doubling circuit comprises a chip U3, a resistor R2, a capacitor C1, a capacitor C2 and a capacitor C6, wherein a pin 2 of the chip U3 is electrically connected with the capacitor C1, a pin 3 of the chip U3 is electrically connected with the capacitor C6, and a pin 6 of the chip U3 is electrically connected with the resistor R2.
Further, the feedback circuit comprises a voltage regulator tube D10, a voltage regulator tube D11, a voltage regulator tube D12, a voltage regulator tube D13, a voltage regulator diode U6, a triode Q8 and a resistor R35, the voltage regulator diode U6 is connected with the voltage regulator tube D10, the voltage regulator tube D11, the voltage regulator tube D12 and the voltage regulator tube D13 in series, and the resistor R36 is electrically connected with the triode Q8.
Furthermore, the power supply circuit is electrically connected with the state detection control circuit, and the power supply circuit is electrically connected with the voltage doubling circuit.
The invention has the beneficial effects that:
the amplitude limiting control method of the high-voltage surge suppression circuit mainly comprises a power supply circuit, a voltage doubling circuit, a state detection control circuit, a surge detection switch circuit and a feedback circuit, wherein the circuit is powered on, when the state control circuit detects that the input is less than or equal to the set value of the state control circuit, the state detection control circuit starts the voltage doubling circuit and closes the surge detection switch circuit, the voltage doubling circuit increases the voltage of an amplitude limiting MOS gate, a driving amplitude limiting tube is completely switched on, and the output voltage follows the input voltage; when the state control circuit detects that the input voltage is larger than or equal to the set value of the state control circuit, the state detection control circuit closes the voltage doubling circuit and opens the surge detection switch circuit, the input surge voltage directly and quickly drives the amplitude limiting tube through the voltage dividing resistor, when the output voltage is higher than the output set value, the feedback circuit starts to work, the voltage dividing resistor starts to divide the voltage step by step, and the output voltage of the product is finally restrained to the output set value through the negative feedback circuit.
Drawings
Fig. 1 is a diagram of a state detection control circuit of the amplitude limiting control method of the high voltage surge suppression circuit of the present invention;
fig. 2 is a voltage-multiplying circuit diagram of the amplitude limiting control method of the high-voltage surge suppression circuit of the present invention;
FIG. 3 is a feedback circuit of the amplitude limiting control method of the high voltage surge suppression circuit of the present invention;
fig. 4 is a circuit diagram of a power supply and surge detection switch of the amplitude limiting control method of the high voltage surge suppression circuit of the present invention.
Detailed Description
In order to more clearly and completely describe the technical scheme of the invention, the invention is further described with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present invention is implemented by the following technical solutions: the invention provides a high-voltage surge suppression circuit amplitude limiting control method, which comprises the following steps: the amplitude limiting control method of the high-voltage surge suppression circuit comprises the following steps: the device comprises a power supply circuit, a voltage doubling circuit, a state detection control circuit, a surge detection switch circuit and a feedback circuit;
when the state control circuit detects that the input is less than or equal to the set value of the state control circuit, the state detection control circuit turns on the voltage doubling circuit, turns off the surge detection switch circuit and outputs voltage following the input voltage;
when the state control circuit detects that the input voltage is greater than or equal to the set value of the state control circuit, the state detection control circuit closes the voltage doubling circuit and opens the surge detection switch circuit, and when the output voltage is higher than the set value of the output, the feedback circuit starts to work to enable the output voltage to be restrained to the set value of the output through the feedback circuit; the state monitoring control circuit is provided with a comparator U1-A, an inverter U4, a voltage regulator D1, a resistor R6 and a resistor R8, wherein a pin 1 of the comparator U1-A is electrically connected with the inverter U4, one end of the resistor R8 is electrically connected with a pin 3 of the comparator U1-A, and the other end of the resistor R8 is electrically connected with the resistor R6; the surge detection switch circuit comprises a MOS tube Q1, a diode D3, a triode Q4, a resistor R7, a resistor R9, a resistor R12 and a resistor R13, wherein a pin 3 of the MOS tube Q1 is electrically connected with the resistor R9, a pin 2 of the MOS tube Q1 is electrically connected with the resistor R7, a pin 1 of the triode Q4 is electrically connected with the resistor R12, and a pin 3 of the triode Q4 is electrically connected with the resistor R13; the voltage doubling circuit comprises a chip U3, a resistor R2, a capacitor C1, a capacitor C2 and a capacitor C6, wherein a pin 2 of the chip U3 is electrically connected with the capacitor C1, a pin 3 of the chip U3 is electrically connected with the capacitor C6, and a pin 6 of the chip U3 is electrically connected with the resistor R2; the feedback circuit comprises a voltage regulator tube D10, a voltage regulator tube D11, a voltage regulator tube D12, a voltage regulator tube D13, a voltage regulator diode U6, a triode Q8 and a resistor R35, wherein the voltage regulator diode U6 is connected with the voltage regulator tube D10, the voltage regulator tube D11, the voltage regulator tube D12 and the voltage regulator tube D13 in series, and the resistor R36 is electrically connected with the triode Q8; the power supply circuit is electrically connected with the state detection control circuit, and the power supply circuit is electrically connected with the voltage doubling circuit.
In this embodiment, when the input voltage is 66V-154V, the bias voltage generated by the input voltage on the bias resistor R3 and the resistor R1 of the state detection control circuit is less than the reference voltage of the regulated voltage source D1, the comparator U1-a outputs high level, the inverter U4 outputs low level, the surge detection switch circuit turns off the MOS transistor Q1 after detecting the low level output by the inverter, the PNP triode Q4 is not turned on, the surge detection switch circuit does not work, the voltage doubling circuit detects the high level output by the comparator U1-a, the voltage doubling circuit works to make the voltage of the G pole of the limiting tubes (M1, M2, M3, M4) higher than the S pole, the limiting driving tube is completely turned on, and the output voltage follows the input voltage. Since the output voltage is less than the set value, the zener diode U6 in the feedback circuit is inactive.
When the input voltage is larger than 165V, the input voltage is on a bias resistor R3 of the state detection control circuit, the generated bias voltage generated on a resistor R1 is larger than the reference voltage of a voltage stabilizing source D1, the level of a comparator U1-A is inverted and low level is output, an inverter U4 outputs high level, a surge detection switch circuit detects that the high level output by the inverter U4 is conducted and a MOS tube Q1 is conducted, a PNP triode Q4 is conducted, the surge detection switch circuit starts to work, a voltage doubling circuit detects that the low level output by the comparator U1-A is detected, and the voltage doubling circuit stops working. The input voltage drives the limiting tube (M1, M2, M3, M4) to be switched on through a triode Q4, a resistor R12 and a diode D3 of the surge detection switch circuit, when the output voltage is generated by a bias resistor R37 and a resistor R39 of the feedback circuit and the bias voltage is 2.5V higher than the reference voltage of a Zener diode U6, the reference source Q6 starts to work, the PNP triode Q8 is conducted, the input voltage is reduced step by step through the voltage division of R12, R14, R19, R21 and R36, when the output voltage is generated in the bias resistor R37 of the feedback circuit and the bias voltage generated by R39 is less than the reference voltage of Q6 by 2.5V, the reference source Q6 stops working, the PNP triode Q8 is turned off, the input voltage directly drives the limiting tubes (M1, M2, M3 and M4) to be turned on through the triode Q4, the resistor R12, the diode D3, the resistor R14, the resistor R19 and the resistor R21, the output voltage rises and repeats in cycles, and finally the output voltage is restrained below 165V.
In the circuit, a resistor R16, a resistor R5, a resistor R18 and a resistor R20 are current-limiting resistors of a grid electrode of an amplitude limiting tube, a voltage stabilizing tube D5, a voltage stabilizing tube D4, a voltage stabilizing tube D6 and a voltage stabilizing tube D7 are MOS tubes GS protection voltage stabilizing tubes of the amplitude limiting tube, and a voltage stabilizing tube D13, a voltage stabilizing tube D12, a voltage stabilizing tube D11 and a voltage stabilizing tube D10 are voltage stabilizing diodes U6 for supplying power and relieving pressure to the voltage stabilizing tube.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (6)
1. A method for controlling amplitude limiting of a high voltage surge suppression circuit is characterized by comprising the following steps: the device comprises a power supply circuit, a voltage doubling circuit, a state detection control circuit, a surge detection switch circuit and a feedback circuit;
when the state control circuit detects that the input is less than or equal to the set value of the state control circuit, the state detection control circuit turns on the voltage doubling circuit, turns off the surge detection switch circuit and outputs voltage following the input voltage;
when the state control circuit detects that the input voltage is larger than or equal to the set value of the state control circuit, the state detection control circuit closes the voltage doubling circuit and opens the surge detection switch circuit, and when the output voltage is higher than the output set value, the feedback circuit starts to work, so that the output voltage is suppressed to the output set value through the feedback circuit.
2. The amplitude limiting control method of the high-voltage surge suppression circuit according to claim 1, wherein the state monitoring control circuit is provided with a comparator U1-A, an inverter U4, a voltage regulator D1, a resistor R6 and a resistor R8, wherein a pin 1 of the comparator U1-A is electrically connected with the inverter U4, one end of the resistor R8 is electrically connected with a pin 3 of the comparator U1-A, and the other end of the resistor R8 is electrically connected with the resistor R6.
3. The amplitude limiting control method of the high-voltage surge suppression circuit according to claim 1, wherein the surge detection switch circuit comprises a MOS transistor Q1, a diode D3, a transistor Q4, a resistor R7, a resistor R9, a resistor R12 and a resistor R13, wherein pin 3 of the MOS transistor Q1 is electrically connected to the resistor R9, pin 2 of the MOS transistor Q1 is electrically connected to the resistor R7, pin 1 of the transistor Q4 is electrically connected to the resistor R12, and pin 3 of the transistor Q4 is electrically connected to the resistor R13.
4. The amplitude limiting control method of the high-voltage surge suppression circuit according to claim 1, wherein the voltage doubling circuit comprises a chip U3, a resistor R2, a capacitor C1, a capacitor C2 and a capacitor C6, wherein a pin 2 of the chip U3 is electrically connected to the capacitor C1, a pin 3 of the chip U3 is electrically connected to the capacitor C6, and a pin 6 of the chip U3 is electrically connected to the resistor R2.
5. The amplitude limiting control method of the high-voltage surge suppression circuit according to claim 1, wherein the feedback circuit comprises a voltage regulator tube D10, a voltage regulator tube D11, a voltage regulator tube D12, a voltage regulator tube D13, a voltage regulator diode U6, a triode Q8 and a resistor R35, the voltage regulator diode U6 is connected with the voltage regulator tube D10, the voltage regulator tube D11, the voltage regulator tube D12 and the voltage regulator tube D13 in series, and the resistor R36 is electrically connected with the triode Q8.
6. The method of claim 1, wherein the power supply circuit is electrically connected to the state detection control circuit and the voltage doubling circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002093.3A CN114257069A (en) | 2020-09-22 | 2020-09-22 | Amplitude limiting control method of high-voltage surge suppression circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011002093.3A CN114257069A (en) | 2020-09-22 | 2020-09-22 | Amplitude limiting control method of high-voltage surge suppression circuit |
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| CN114257069A true CN114257069A (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011002093.3A Pending CN114257069A (en) | 2020-09-22 | 2020-09-22 | Amplitude limiting control method of high-voltage surge suppression circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986484A (en) * | 1996-07-05 | 1999-11-16 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device drive circuit with voltage surge suppression |
| CN201717779U (en) * | 2010-04-28 | 2011-01-19 | 石家庄国耀电子科技有限公司 | Direct-current power supply input end protector of airborne apparatus |
| CN201976016U (en) * | 2010-10-19 | 2011-09-14 | 中科华核电技术研究院有限公司北京分公司 | Alternating-current and direct-current voltage-stabilizing power supply |
| CN106058836A (en) * | 2016-07-06 | 2016-10-26 | 深圳市振华微电子有限公司 | Large-current surge suppressor |
| CN106655772A (en) * | 2016-09-26 | 2017-05-10 | 西安应用光学研究所 | Booster circuit having over-voltage surge function |
| CN110912415A (en) * | 2019-12-11 | 2020-03-24 | 国网山东省电力公司济南供电公司 | Low-power-consumption isolated output household power supply |
| CN214480260U (en) * | 2020-09-22 | 2021-10-22 | 深圳市振华微电子有限公司 | High-voltage surge suppression amplitude limiting circuit |
-
2020
- 2020-09-22 CN CN202011002093.3A patent/CN114257069A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5986484A (en) * | 1996-07-05 | 1999-11-16 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor device drive circuit with voltage surge suppression |
| CN201717779U (en) * | 2010-04-28 | 2011-01-19 | 石家庄国耀电子科技有限公司 | Direct-current power supply input end protector of airborne apparatus |
| CN201976016U (en) * | 2010-10-19 | 2011-09-14 | 中科华核电技术研究院有限公司北京分公司 | Alternating-current and direct-current voltage-stabilizing power supply |
| CN106058836A (en) * | 2016-07-06 | 2016-10-26 | 深圳市振华微电子有限公司 | Large-current surge suppressor |
| CN106655772A (en) * | 2016-09-26 | 2017-05-10 | 西安应用光学研究所 | Booster circuit having over-voltage surge function |
| CN110912415A (en) * | 2019-12-11 | 2020-03-24 | 国网山东省电力公司济南供电公司 | Low-power-consumption isolated output household power supply |
| CN214480260U (en) * | 2020-09-22 | 2021-10-22 | 深圳市振华微电子有限公司 | High-voltage surge suppression amplitude limiting circuit |
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