CN206412760U - A kind of anti-reverse voltage surge, spike and ripple protection circuit - Google Patents
A kind of anti-reverse voltage surge, spike and ripple protection circuit Download PDFInfo
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- CN206412760U CN206412760U CN201720104686.8U CN201720104686U CN206412760U CN 206412760 U CN206412760 U CN 206412760U CN 201720104686 U CN201720104686 U CN 201720104686U CN 206412760 U CN206412760 U CN 206412760U
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- control chip
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- filter circuit
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Abstract
The utility model discloses a kind of anti-reverse voltage surge, spike and ripple protection circuit, including：Filter circuit；Control chip, the model LT4363 series of control chip；Switching tube, switching tube is managed for MOSFET, and grid connects the raster data model output pin of control chip, and drain electrode connects the output end of filter circuit, and source electrode is the output end of the protection circuit；Input overpressure value circuit；Bleeder circuit, the source electrode of bleeder circuit one end connecting valve pipe, other end ground connection；Timing capacitor, is connected to the timer input pin of the control chip.The utility model devises a kind of high performance DC voltage-stabilizing type surge restraint circuit; it is assembled in different wave filters; the anti-reverse voltage surge of complete series, spike and ripple protection circuit can be turned into; effectively suppress surge and peak current, small volume, cheap, defencive function are perfect, reliability is high.
Description
Technical field
The utility model is related to electronic instrumentation, and in particular to a kind of anti-reverse voltage surge, spike and ripple protection
Circuit.
Background technology
The characteristics of due to voltage spikes is the voltage of lasting tens of microseconds and up to a few hectovolts, by thunderbolt or the sensing of load current step
Coupling is produced.Transient Voltage Suppressor is generally used at present, EMI filter circuit and feed cable inductance needed for being aided with.
Voltage surge is generally up to 100V, continues tens of or hundreds of milliseconds, is caused by throwing load.Load circuit or battery disconnecting
The voltage rapid increase, and therefore cause to load using other of same power supply in a short time at alternating current generator two ends can be caused
Run into same voltage surge.
Surge and spike not only influence the normal operation of electronic equipment, particularly power supply and communication apparatus, even result in and set
Standby damage.Its influence degree depends on the antijamming capability of the size and equipment of dash current in itself.In order that electronic equipment
Can under glitch rugged environment normal work, it is necessary to it is power module in corresponding electronic equipment, signal input, defeated
Go out the suitable circuit of end increase, suppress surge and peak current.
But, most of voltage surge suppresses product because using discrete component, but discrete component is present that volume is big, valency
Lattice are expensive, lack the low deficiency of perfect defencive function, reliability, it is difficult to be used in the power-supply filter of electromagnetism interference.
Utility model content
In view of the shortcomings of the prior art, the utility model discloses the protection of a kind of anti-reverse voltage surge, spike and ripple
Circuit.
The technical solution of the utility model is as follows：
A kind of anti-reverse voltage surge, spike and ripple protection circuit, including：
Filter circuit；The filter circuit includes the first electric capacity, the second electric capacity and inductance；First electric capacity, described
It is tie point, the tie point two-terminal-grounding that two electric capacity and the inductance, which are connected,；First electric capacity and the inductance
Common port is the input of the filter circuit；The common port of second electric capacity and the inductance is defeated for the filter circuit
Go out end；
Control chip；The model LT4363 series of the control chip；
Switching tube；The switching tube is managed for MOSFET；The raster data model of the grid connection control chip of the switching tube is defeated
Go out pin, drain electrode connects the output end of filter circuit, and source electrode is the output end of the protection circuit；
Input overpressure value circuit；The input overpressure value circuit includes first resistor, second resistance and 3rd resistor；It is described
First resistor, the second resistance and 3rd resistor series connection are the second branch road；One end of second branch road is connected to institute
State the output end of filter circuit, other end ground connection；The common port of the second resistance and the 3rd resistor is connected to control core
The over-voltage comparator input of piece；The common port of the first resistor and the second resistance is connected to the control chip
Under-voltage comparator input；
Bleeder circuit；The bleeder circuit includes the 4th resistance and the 5th resistance；4th resistance and the 5th electricity
Resistance series connection is the 3rd branch road；The source electrode of one end connecting valve pipe of 3rd branch road, other end ground connection；4th resistance and
The common port of 5th resistance connects the feedback input pin of the control chip；
Timing capacitor；The timing capacitor is connected to the timer input pin of the control chip.
Its further technical scheme is, in addition to Transient Suppression Diode；The Transient Suppression Diode is connected to institute
Between the output end for stating inductance and the filter circuit.
Its further technical scheme is, in addition to anti-reverse diode；The plus earth of the anti-reverse diode, bears
Pole is connected to the output end of the filter circuit.
Advantageous effects of the present utility model are：
The utility model devises a kind of high performance DC voltage-stabilizing type surge restraint circuit, is assembled in different wave filters
It is interior, the anti-reverse voltage surge of complete series, spike and ripple protection circuit can be turned into, effectively suppress surge and peak current, volume
Small, cheap, defencive function is perfect, reliability is high.
The operating ambient temperature range of circuit disclosed in the utility model is -55 DEG C~+85 DEG C, operating ambient temperature model
Width is enclosed, better than other like products.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is the variation diagram of timing capacitor both end voltage.
Fig. 3 is the schematic diagram of embodiment.
Embodiment
Fig. 1 is schematic diagram of the present utility model.The utility model as shown in Figure 1 includes filter circuit and Surge suppression is controlled
Circuit.Surge suppression control circuit includes control chip, switching tube Q1, input overpressure value circuit, bleeder circuit and timing capacitor
C5。
Filter circuit includes the first electric capacity C1, the second electric capacity C7 and inductance L1.First electric capacity C1, the second electric capacity C7 and inductance
L1 series connection is tie point, tie point two-terminal-grounding.First electric capacity C1 and inductance L1 common port is the input of filter circuit
End, while being also the signal input part Vin of protection circuit.Second electric capacity C7 and inductance L1 common port is the output of filter circuit
End.
Also include Transient Suppression Diode D3 and anti-reverse diode D2.Transient Suppression Diode D3 be connected to inductance L1 and
Between the output end of filter circuit.Anti-reverse diode D2 plus earth, negative pole is connected to the output end of filter circuit.Counnter attack
Diode D2 is met for Schottky diode.
Filter circuit coordinates with anti-reverse diode D2, Transient Suppression Diode D3, can suppress peak voltage
Below 100V.Signal enters the Surge suppression control circuit of rear end afterwards.
The model LT4363 series of control chip.In the present embodiment, the model LT4363-2 of control chip.
Switching tube Q1 manages for MOSFET.Switching tube Q1 grid connects the raster data model output pin GATE of control chip,
The output end of drain electrode connection filter circuit, source electrode is the output end vo ut of protection circuit.
Timing capacitor C5 is connected to the timer input pin TMR of control chip.
When the output voltage of the feedback input pin FB of the control chip bleeder circuits being sampled to exceedes setting for burning voltage
During definite value 37V ± 1V, control chip charges to timing capacitor C5, when the voltage at timing capacitor C5 two ends is charged to 1.375V, opens
Pipe Q1 cut-offs are closed, the output voltage of protection circuit is clamped to below setting value 37V, timing capacitor C5 electric discharges, timing capacitor C5
When the voltage at two ends drops to 0.5V, switching tube Q1 conductings.So repeatedly, until overvoltage surge is eliminated.Output voltage amplitude
It is maintained at below 37V, it can be ensured that subsequent conditioning circuit is not damaged by the impact of overvoltage.
Bleeder circuit includes the 4th resistance R7 and the 5th resistance R8.4th resistance R7 and the 5th resistance R8 series connection is the 3rd
Road.One end connecting valve pipe Q1 of 3rd branch road source electrode, other end ground connection.4th resistance R7 and the 5th resistance R8 common port
Connect the feedback input pin FB of control chip.4th resistance R7 and the 5th resistance R8 as output feedback circuit, for adjusting
Save the output voltage Vout of protection circuit and detect whether output voltage Vout exceedes burning voltage setting value.
Inputting overpressure value circuit includes first resistor R2, second resistance R3 and 3rd resistor R4.First resistor R2, the second electricity
It is the second branch road to hinder R3 and 3rd resistor R4 series connection.One end of second branch road is connected to the output end of filter circuit, another termination
Ground.Second resistance R3 and 3rd resistor R4 common port are connected to the over-voltage comparator input OV of control chip.First electricity
Resistance R2 and second resistance R3 common port is connected to the under-voltage comparator input UV of control chip.
In normal state, the over-voltage comparator input OV of control chip voltage is less than 1.275V, when defeated
Enter the maximum that voltage exceedes setting, now the over-voltage comparator input OV of control chip voltage is higher than 1.275V door
Limit value, switching tube Q1 would be at off-state.Only when the over-voltage comparator input OV of control chip voltage is less than
After threshold value, switching tube Q1 can be just reopened.
First resistor R2, second resistance R3 and 3rd resistor R4 are also used for setting input cut-in voltage simultaneously, when control core
The under-voltage comparator input UV of piece voltage is less than 1.275V threshold value, dragging down electric current and will can control inside control chip
The raster data model output pin GATE of chip voltage pull-down, makes switching tube Q1 be off state.It is under-voltage when control chip
When comparator input terminal UV voltage is higher than 1.275V, by the charging source inside control chip by the raster data model of control chip
Output pin GATE voltage high, opens switching tube Q1.
Fig. 2 is the variation diagram of timing capacitor both end voltage.As shown in Fig. 2 whole work process is divided into four-stage.In mistake
By the discharge and recharge to timing capacitor C5 come the height of controlling switch pipe Q1 grid voltage under pressure or over-current state, and then to control
Switching tube Q1 processed break-make and reopen function.The timer input pin TMR of control chip voltage rises from 0.5V
To 1.275V, the raster data model output pin GATE of control chip is high level, and switching tube Q1 is in opening.Control chip
Timer input pin TMR voltage when rising to 1.375V, the raster data model output pin GATE of control chip voltage
It is pulled low, switching tube Q1 is off.The timer input pin TMR of control chip voltage continuously rises to 4.3V,
Then electric discharge is started, the timer input pin TMR of control chip voltage is reduced until being reduced to 0.5V, then control chip
Raster data model output pin GATE voltage is driven high, and reopens switching tube Q1.
Filter circuit suppresses peak voltage in below 100V, and then by surge restraint circuit, surge voltage is suppressed
In 37 ± 1V, so as to protect back-end circuit not damaged by from high pressure.The circuit can effectively suppress 80V/50ms
Mistake surge voltage and 600V/10us peak voltage.
Fig. 3 is the schematic diagram of embodiment.In the particular embodiment, it may refer to each electronic component shown in Fig. 3
Design parameter value sets up circuit, or according to actual needs, the parameter value for taking to electronic component other to cooperate.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
To understand, what those skilled in the art directly exported or associated on the premise of spirit of the present utility model and design is not departed from
Oher improvements and changes, are considered as being included within protection domain of the present utility model.
Claims (3)
1. a kind of anti-reverse voltage surge, spike and ripple protection circuit, it is characterised in that including：
Filter circuit；The filter circuit includes the first electric capacity (C1), the second electric capacity (C7) and inductance (L1)；First electric capacity
(C1) it is tie point, the tie point two-terminal-grounding that, second electric capacity (C7) and the inductance (L1), which are connected,；Described
The common port of one electric capacity (C1) and the inductance (L1) is the input of the filter circuit；Second electric capacity (C7) and described
The common port of inductance (L1) is the output end of the filter circuit；
Control chip；The model LT4363 series of the control chip；
Switching tube (Q1)；The switching tube (Q1) is managed for MOSFET；The grid of the switching tube (Q1) connects the grid of control chip
Pole drives output pin, and drain electrode connects the output end of filter circuit, and source electrode is the output end of the protection circuit；
Input overpressure value circuit；The input overpressure value circuit includes first resistor (R2), second resistance (R3) and 3rd resistor
(R4)；The first resistor (R2), the second resistance (R3) and the 3rd resistor (R4) series connection are the second branch road；Described
One end of two branch roads is connected to the output end of the filter circuit, other end ground connection；The second resistance (R3) and the described 3rd
The common port of resistance (R4) is connected to the over-voltage comparator input of control chip；The first resistor (R2) and described second
The common port of resistance (R3) is connected to the under-voltage comparator input of the control chip；
Bleeder circuit；The bleeder circuit includes the 4th resistance (R7) and the 5th resistance (R8)；4th resistance (R7) and institute
It is the 3rd branch road to state the series connection of the 5th resistance (R8)；The source electrode of one end connecting valve pipe (Q1) of 3rd branch road, another termination
Ground；The common port of 4th resistance (R7) and the 5th resistance (R8) connects the feedback input pin of the control chip；
Timing capacitor (C5)；The timing capacitor (C5) is connected to the timer input pin of the control chip.
2. anti-reverse voltage surge, spike and ripple protection circuit as claimed in claim 1, it is characterised in that also including wink
State suppresses diode (D3)；The Transient Suppression Diode (D3) is connected to the output of the inductance (L1) and the filter circuit
Between end.
3. anti-reverse voltage surge, spike and ripple protection circuit as claimed in claim 1, it is characterised in that also including anti-
Reversal connection diode (D2)；The plus earth of the anti-reverse diode (D2), negative pole is connected to the output end of the filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104686.8U CN206412760U (en) | 2017-01-25 | 2017-01-25 | A kind of anti-reverse voltage surge, spike and ripple protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720104686.8U CN206412760U (en) | 2017-01-25 | 2017-01-25 | A kind of anti-reverse voltage surge, spike and ripple protection circuit |
Publications (1)
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|---|---|
| CN206412760U true CN206412760U (en) | 2017-08-15 |
Family
ID=59557539
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| CN201720104686.8U Active CN206412760U (en) | 2017-01-25 | 2017-01-25 | A kind of anti-reverse voltage surge, spike and ripple protection circuit |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394769A (en) * | 2017-09-04 | 2017-11-24 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
| CN108233351A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of Surge suppression protector |
| CN109067156A (en) * | 2018-08-03 | 2018-12-21 | 湖南兴天电子科技有限公司 | A kind of multifunctional high-voltage power supply input protection circuit applied to underwater equipment |
| CN109755928A (en) * | 2019-02-19 | 2019-05-14 | 深圳市科比特航空科技有限公司 | Anti-reverse electromotive force circuit and unmanned plane |
| CN110957901A (en) * | 2019-12-31 | 2020-04-03 | 成都国翼电子技术有限公司 | Power supply protection circuit meeting GJB181A standard |
| CN111316524A (en) * | 2017-10-13 | 2020-06-19 | 深圳传音通讯有限公司 | Charging circuit for intelligent terminal and intelligent terminal with same |
| CN111953205A (en) * | 2020-07-23 | 2020-11-17 | 重庆大及电子科技有限公司 | High-power filtering protection device and frame type filtering structure |
| CN111987758A (en) * | 2020-07-08 | 2020-11-24 | 中国兵器装备集团上海电控研究所 | Charging and current-limiting protection circuit |
| CN113972623A (en) * | 2021-09-29 | 2022-01-25 | 中国兵器装备集团上海电控研究所 | Direct current surge suppression circuit based on NMOS pipe |
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2017
- 2017-01-25 CN CN201720104686.8U patent/CN206412760U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394769A (en) * | 2017-09-04 | 2017-11-24 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
| CN107394769B (en) * | 2017-09-04 | 2019-06-04 | 北京星网卫通科技开发有限公司 | Power supply protector and communication in moving satellite communication antenna equipment |
| CN111316524A (en) * | 2017-10-13 | 2020-06-19 | 深圳传音通讯有限公司 | Charging circuit for intelligent terminal and intelligent terminal with same |
| CN108233351A (en) * | 2018-01-16 | 2018-06-29 | 四川安迪科技实业有限公司 | A kind of Surge suppression protector |
| CN109067156A (en) * | 2018-08-03 | 2018-12-21 | 湖南兴天电子科技有限公司 | A kind of multifunctional high-voltage power supply input protection circuit applied to underwater equipment |
| CN109755928A (en) * | 2019-02-19 | 2019-05-14 | 深圳市科比特航空科技有限公司 | Anti-reverse electromotive force circuit and unmanned plane |
| CN110957901A (en) * | 2019-12-31 | 2020-04-03 | 成都国翼电子技术有限公司 | Power supply protection circuit meeting GJB181A standard |
| CN111987758A (en) * | 2020-07-08 | 2020-11-24 | 中国兵器装备集团上海电控研究所 | Charging and current-limiting protection circuit |
| CN111987758B (en) * | 2020-07-08 | 2021-12-07 | 中国兵器装备集团上海电控研究所 | Charging and current-limiting protection circuit |
| CN111953205A (en) * | 2020-07-23 | 2020-11-17 | 重庆大及电子科技有限公司 | High-power filtering protection device and frame type filtering structure |
| CN113972623A (en) * | 2021-09-29 | 2022-01-25 | 中国兵器装备集团上海电控研究所 | Direct current surge suppression circuit based on NMOS pipe |
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