CN210517784U - Wide pulse surge suppression circuit of high-power of direct current - Google Patents
Wide pulse surge suppression circuit of high-power of direct current Download PDFInfo
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- CN210517784U CN210517784U CN201921405424.0U CN201921405424U CN210517784U CN 210517784 U CN210517784 U CN 210517784U CN 201921405424 U CN201921405424 U CN 201921405424U CN 210517784 U CN210517784 U CN 210517784U
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Abstract
The utility model relates to a surge suppression circuit of power especially relates to a wide pulse surge suppression circuit of high-power of direct current. A voltage stabilizing diode and a resistor are connected in series to form a reference voltage generating circuit, an enhanced N-channel enhanced MOSFET, a P-channel enhanced MOSFET and three resistors are used to form a negative feedback circuit, and the reference voltage generating circuit and the negative feedback circuit form a direct-current high-power supply wide pulse surge suppression circuit. The circuit only adopts seven discrete components, the unit price of the seven components is lower, the components are common electronic components, the cost of the wide pulse surge suppression circuit is reduced, and the circuit is high in efficiency and low in energy consumption. The circuit can be used for similar application scenes and has certain universality.
Description
Technical Field
The utility model relates to a surge suppression circuit of power especially relates to a wide pulse surge suppression circuit of high-power of direct current.
Background
In some direct-current high-power supply application occasions, the power supply is required to resist voltage surge of tens of milliseconds, and as the surge lasts for tens of milliseconds, the surge is called as wide pulse surge, circuit devices are required to be not damaged, and the power supply can normally output.
A TVS (transient voltage suppressor) or a piezoresistor is adopted in a general direct current surge suppression circuit, and the surge suppression circuit is difficult to suppress wide pulse voltage surge of dozens of milliseconds, so that devices are damaged, and a power supply cannot normally output. Or a direct current surge suppression module is adopted, but the unit price of the module is high.
A low-cost and high-reliability solution is provided, and a direct-current high-power supply wide-pulse surge suppression circuit is formed by adopting discrete devices. The circuit basically does not consume energy under the condition of no surge input, and consumes the surge energy on the surge suppression circuit under the condition of surge input, so that the impact of a surge on a post-stage circuit is reduced.
Disclosure of Invention
The utility model discloses the purpose:
the wide pulse surge suppression circuit of the direct-current high-power supply solves the problem of wide pulse surge suppression, reduces the cost of the wide pulse surge suppression circuit, and improves the efficiency of the surge suppression circuit.
The utility model discloses technical scheme:
a direct-current high-power supply wide pulse surge suppression circuit is characterized in that a voltage stabilizing diode and a resistor are connected in series to form a reference voltage generation circuit, an enhanced N-channel enhanced MOSFET, a P-channel enhanced MOSFET and three resistors are used to form a negative feedback circuit, and the reference voltage generation circuit and the negative feedback circuit form the direct-current high-power supply wide pulse surge suppression circuit.
The reference voltage generating circuit comprises a resistor R1 and a voltage stabilizing diode; one end of the resistor R1 is connected with the positive power input end, the other end of the resistor R1 is connected with the cathode of the voltage stabilizing diode, and the anode of the voltage stabilizing diode is connected with the power ground.
The negative feedback circuit comprises a resistor R2, an N-channel enhancement type MOSFET, a P-channel enhancement type MOSFET, a resistor R3 and a resistor R4; the drain electrode of the N-channel enhancement type MOSFET is connected with the resistor R2 and the grid electrode of the P-channel enhancement type MOSFET, the other end of the resistor R2 and the source electrode of the P-channel enhancement type MOSFET are connected with the anode of an input power supply, one end of the resistor R3 and the drain electrode of the P-channel enhancement type MOSFET are connected to form the output end of the wide pulse surge suppression circuit, the other end of the resistor R3 and one end of the resistor R4 are connected with the source electrode of the N-channel enhancement type MOSFET, and the other end of the resistor R4 is connected with the power supply ground.
And the cathode of the voltage stabilizing diode is connected with the grid electrode of the N-channel enhancement type MOSFET.
The device is a discrete component.
The P-channel enhanced MOSFET is a low-resistance and high-power MOSFET.
The voltage stabilizing diode is a high-precision voltage stabilizing diode.
The suppression circuit is a negative feedback circuit.
The utility model has the advantages that: the circuit only adopts seven discrete components, the unit price of the seven components is lower, the components are common electronic components, the cost of the wide pulse surge suppression circuit is reduced, and the circuit is high in efficiency and low in energy consumption. The circuit can be used for similar application scenes and has certain universality.
Drawings
FIG. 1 is a schematic diagram of a wide pulse surge suppression circuit of a DC high-power supply
1-positive power supply input terminal, 2-power ground, 3-resistor R1, 4-zener diode, 5-resistor R2, 6-N channel enhancement type MOSFET, 7-P channel enhancement type MOSFET, 8-resistor R3, 9-resistor R4
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in figure 1, the wide pulse surge suppression circuit of the direct-current high-power supply adopts a voltage stabilizing diode and a resistor which are connected in series to form a reference voltage generating circuit, an enhanced N-channel enhanced MOSFET, a P-channel enhanced MOSFET and three resistors are used to form a negative feedback circuit, and a reference voltage signal is used as the input of the negative feedback circuit, so that the output voltage follows the reference voltage, and the function of wide pulse high-power surge suppression is achieved.
The scheme comprises seven components, wherein 3 is a resistor R1, 4 is a voltage stabilizing diode, 5 is a resistor R2, 6 is an N-channel enhancement type MOSFET, 7 is a P-channel enhancement type MOSFET, 8 is a resistor R3, 9 is a resistor R4, and the connection relation of the seven components is shown in figure 1. One end of the resistor R1 is connected with the positive power input end, the other end of the resistor R1 is connected with the cathode of the voltage stabilizing diode, the anode of the voltage stabilizing diode is connected with the power ground, the cathode of the voltage stabilizing diode is connected with the grid of the N-channel enhancement type MOSFET, and the drain of the N-channel enhancement type MOSFET is connected with the resistor R2 and the grid of the P-channel enhancement type MOSFET. The other end of the resistor R5 and the source of the P-channel enhancement type MOSFET are connected with the anode of the input power supply. One section of the resistor R3 is connected with the drain electrode of the P-channel enhancement type MOSFET to form the output end of the wide pulse surge suppression circuit. The other end of the resistor R3 and one end of the resistor R4 are connected to the source of the N-channel enhancement MOSFET. The other end of the resistor R4 is connected to power ground.
Claims (7)
1. A direct-current high-power supply wide pulse surge suppression circuit is characterized in that a voltage stabilizing diode and a resistor are connected in series to form a reference voltage generation circuit, an enhanced N-channel enhanced MOSFET, a P-channel enhanced MOSFET and three resistors are used to form a negative feedback circuit, and the reference voltage generation circuit and the negative feedback circuit form the direct-current high-power supply wide pulse surge suppression circuit.
2. The direct-current high-power supply wide pulse surge suppression circuit according to claim 1, wherein said reference voltage generation circuit comprises a resistor R1, a zener diode; one end of the resistor R1 is connected with the positive power input end, the other end of the resistor R1 is connected with the cathode of the voltage stabilizing diode, and the anode of the voltage stabilizing diode is connected with the power ground.
3. The direct current high power supply wide pulse surge suppression circuit according to claim 1, wherein said negative feedback circuit comprises a resistor R2, an N channel enhancement MOSFET, a P channel enhancement MOSFET, a resistor R3, a resistor R4; the drain electrode of the N-channel enhancement type MOSFET is connected with the resistor R2 and the grid electrode of the P-channel enhancement type MOSFET, the other end of the resistor R2 and the source electrode of the P-channel enhancement type MOSFET are connected with the anode of an input power supply, one end of the resistor R3 and the drain electrode of the P-channel enhancement type MOSFET are connected to form the output end of the wide pulse surge suppression circuit, the other end of the resistor R3 and one end of the resistor R4 are connected with the source electrode of the N-channel enhancement type MOSFET, and the other end of the resistor R4 is connected with the power supply ground.
4. The direct current high power supply wide pulse surge suppression circuit according to claim 1, wherein a cathode of said zener diode is connected to a gate of an N-channel enhancement type MOSFET.
5. The direct current high power supply wide pulse surge suppression circuit according to claim 1, wherein said P-channel enhancement MOSFET is a low resistance, high power MOSFET transistor.
6. The direct current high power supply wide pulse surge suppression circuit according to claim 1, wherein said zener diode is a high precision zener diode.
7. The direct current high power supply wide pulse surge suppression circuit according to claim 1, wherein said suppression circuit is a negative feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405424.0U CN210517784U (en) | 2019-08-27 | 2019-08-27 | Wide pulse surge suppression circuit of high-power of direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921405424.0U CN210517784U (en) | 2019-08-27 | 2019-08-27 | Wide pulse surge suppression circuit of high-power of direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210517784U true CN210517784U (en) | 2020-05-12 |
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ID=70544918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921405424.0U Active CN210517784U (en) | 2019-08-27 | 2019-08-27 | Wide pulse surge suppression circuit of high-power of direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210517784U (en) |
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2019
- 2019-08-27 CN CN201921405424.0U patent/CN210517784U/en active Active
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| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: Nanchang high tech Industrial Development Zone, Jiangxi Province Patentee after: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. Address before: 330024 Jiangxi city in Nanchang Province, the new bridge box 460 box 5001 Patentee before: JIANGXI HONGDU AVIATION INDUSTRY GROUP Co.,Ltd. |
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| CP02 | Change in the address of a patent holder |