CN103441486A - Reverse-connection-prevention protective circuit of high current power supply - Google Patents
Reverse-connection-prevention protective circuit of high current power supply Download PDFInfo
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- CN103441486A CN103441486A CN2013103549730A CN201310354973A CN103441486A CN 103441486 A CN103441486 A CN 103441486A CN 2013103549730 A CN2013103549730 A CN 2013103549730A CN 201310354973 A CN201310354973 A CN 201310354973A CN 103441486 A CN103441486 A CN 103441486A
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Abstract
The invention discloses a reverse-connection-prevention protective circuit of a high current power supply. The reverse-connection-prevention protective circuit of the high current power supply comprises a voltage stabilizing diode and a CMOS tube which are connected in parallel, and the grid voltage of the CMOS tube is protected by a voltage division circuit. The reverse-connection-prevention protective circuit of the high current power supply is low in self power consumption, a large current can pass through the protective circuit, and the protective circuit can resist high-strength surge interference.
Description
Technical field
The present invention relates to reverse-connection protection circuit, particularly a kind of high-current supply reverse connection prevention protection circuit.
Background technology
At present, most reverse power connection protection adopts common diode to realize, when system power is larger, diode is more serious because of heating, and the phenomenon by often there being diode to burn, cause equipment fault.Fig. 1 shows the circuit diagram of the reverse power connection protective circuit of prior art, and it is mainly that diode D1 is serially connected between power supply and load, and the problem of existence mainly contains: 1) diode heating itself; 2) can not be through larger electric current; 3) power requirement of diode is larger; 4) the surge level of interference is lower; 5) take the PCB space larger.
Summary of the invention
In view of this, the present invention proposes a high-current supply reverse connection prevention protection circuit, with protective circuit, consumes less self power as far as possible, and protective circuit can be passed through large electric current, and can resist high-intensity surge and disturb.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of high-current supply reverse connection prevention protection circuit, wherein, comprise voltage stabilizing didoe parallel with one another and CMOS pipe, and the grid voltage of described CMOS pipe is protected by a bleeder circuit.
Above-mentioned high-current supply reverse connection prevention protection circuit, wherein, described CMOS pipe is the PMOS pipe, the drain electrode of described PMOS pipe connects positive source.
Above-mentioned high-current supply reverse connection prevention protection circuit, wherein, described voltage stabilizing didoe is TVS.
With respect to prior art, the present invention has following advantage:
1) protective circuit tries one's best self power consumption few, and the heating of minimizing system, improve reliability;
2) protective circuit can be passed through large electric current, realizes large electric current input;
3) can resist high-intensity surge and disturb, realize level Four surge interference protection.
The accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention the present invention does not form inappropriate limitation of the present invention for explaining.In the accompanying drawings:
The electrical block diagram that Fig. 1 is power supply reverse connection protection protective circuit in prior art;
The electrical block diagram that Fig. 2 is high-current supply reverse connection prevention protection circuit of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
It should be noted that, in the situation that do not conflict, embodiment and the feature in embodiment in the present invention can combine mutually.
Basic thought of the present invention is: design a kind of high-current supply reverse connection prevention protection circuit.
Below in conjunction with accompanying drawing, each preferred embodiment of the present invention is described further:
With reference to Fig. 2, embodiment of the present invention high-current supply reverse connection prevention protection circuit comprises voltage stabilizing didoe parallel with one another and CMOS pipe, and the grid voltage of CMOS pipe is realized protection by a bleeder circuit R1, R2.The CMOS pipe is selected low conducting internal resistance, high-power PMOS pipe, and the drain electrode of PMOS pipe connects positive source.Voltage stabilizing didoe is TVS; TVS pipe in parallel is to increase power supply Anti-surging grade; TVS(Transient Voltage Suppressor; Transient Voltage Suppressor); it is a kind of high-effect protection device of diode form; when the two poles of the earth of TVS diode are subject to reverse transient state high energy impact events; it can be with the speed of 10-12 second-time; the high impedance of its two interpolar is become to Low ESR; the surge power of absorption up to thousands of watts; make the voltage clamp of two interpolars in a predetermined value, effectively protect the precision components in electronic circuit, avoid the damage of various surge pulses.
Referring to Fig. 2, when electric power polarity connects inverse time, Q1 and all not conductings of Z1, circuit can not form loop, and system is not worked, and reversal connection protection function is realized.
When power supply normally accesses, the first conducting of diode Z1, then make Vgs voltage reach conducting voltage by R1 and R2 dividing potential drop, Q1 conducting subsequently.After the Q1 conducting, because of conducting internal resistance very low (being less than 0.01 Ω), Z1 is by short circuit, and circuit enters normal mode of operation, because Q1 is high power device, can the continuous firing electric current be 90A.
Z1 also has a main effect, and when positive surge 2KV passes through, system is directly passed through, when surge-2KV occurs, and the clamped electric discharge of Z1, Q1 is not breakdown in protection.Z1 self with parasitic diode, the voltage between source electrode and drain electrode is when too large, it is reversed and punctures, and plays the clamper protective effect.
The present invention has following advantage:
1) protective circuit tries one's best self power consumption few, and the heating of minimizing system, improve reliability;
2) protective circuit can be passed through large electric current, realizes large electric current input;
3) can resist high-intensity surge and disturb, realize level Four surge interference protection.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (3)
1. a high-current supply reverse connection prevention protection circuit, is characterized in that, comprises voltage stabilizing didoe parallel with one another and CMOS pipe, and the grid voltage of described CMOS pipe is protected by a bleeder circuit.
2. high-current supply reverse connection prevention protection circuit according to claim 1, is characterized in that, described CMOS pipe is managed for PMOS, and the drain electrode of described PMOS pipe connects positive source.
3. high-current supply reverse connection prevention protection circuit according to claim 2, is characterized in that, described voltage stabilizing didoe is TVS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103549730A CN103441486A (en) | 2013-08-14 | 2013-08-14 | Reverse-connection-prevention protective circuit of high current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103549730A CN103441486A (en) | 2013-08-14 | 2013-08-14 | Reverse-connection-prevention protective circuit of high current power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103441486A true CN103441486A (en) | 2013-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103549730A Pending CN103441486A (en) | 2013-08-14 | 2013-08-14 | Reverse-connection-prevention protective circuit of high current power supply |
Country Status (1)
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| CN (1) | CN103441486A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824855A (en) * | 2014-03-20 | 2014-05-28 | 绍兴光大芯业微电子有限公司 | Complementary metal-oxide-semiconductor (CMOS) adjustment integrated circuit structure with power supply transposition protection function |
| CN110962525A (en) * | 2018-09-30 | 2020-04-07 | 广东威灵汽车部件有限公司 | Electric automobile, compressor and control method and device of compressor |
| CN111133650A (en) * | 2017-09-26 | 2020-05-08 | 罗伯特·博世有限公司 | Multi-branch power supply unit for vehicle control device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5764465A (en) * | 1995-12-19 | 1998-06-09 | Autoliv Asp, Inc. | Electronic circuit arrangement having polarity reversal protection |
| US5847911A (en) * | 1997-11-20 | 1998-12-08 | Trw Inc. | Self-protecting switch apparatus for controlling a heat element of a vehicle seat and a method for providing the apparatus |
| JP2001069674A (en) * | 1999-08-30 | 2001-03-16 | Nec Wireless Networks Ltd | Negative-polarity input-voltage preventive circuit |
| EP1401077A1 (en) * | 2002-09-17 | 2004-03-24 | IXFIN MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. | A circuit for protection against polarity reversal in the supply of an electric circuit |
| CN201570860U (en) * | 2009-11-06 | 2010-09-01 | 深圳市同洲电子股份有限公司 | Direct current power circuit with reverse polarity protective function |
| CN101872971A (en) * | 2010-07-02 | 2010-10-27 | 北京星网锐捷网络技术有限公司 | Reverse-connection preventing circuit, reverse-connection preventing processing method and communication equipment |
| CN201898330U (en) * | 2010-11-12 | 2011-07-13 | 无锡新茂科技有限责任公司 | Reverse-connection-preventive circuit |
| CN201975786U (en) * | 2010-12-30 | 2011-09-14 | 上海日立电器有限公司 | Reverse connection prevention circuit of low-voltage direct-current power supply compressor |
| CN202260430U (en) * | 2011-08-05 | 2012-05-30 | 三一重机有限公司 | Interface protection circuit for excavator controller |
| CN103036226A (en) * | 2012-12-06 | 2013-04-10 | 南京莱斯信息技术股份有限公司 | Low-cost and low-power-consumption power supply reverse connection protection circuit and protection method of the same |
-
2013
- 2013-08-14 CN CN2013103549730A patent/CN103441486A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5764465A (en) * | 1995-12-19 | 1998-06-09 | Autoliv Asp, Inc. | Electronic circuit arrangement having polarity reversal protection |
| US5847911A (en) * | 1997-11-20 | 1998-12-08 | Trw Inc. | Self-protecting switch apparatus for controlling a heat element of a vehicle seat and a method for providing the apparatus |
| JP2001069674A (en) * | 1999-08-30 | 2001-03-16 | Nec Wireless Networks Ltd | Negative-polarity input-voltage preventive circuit |
| EP1401077A1 (en) * | 2002-09-17 | 2004-03-24 | IXFIN MAGNETI MARELLI SISTEMI ELETTRONICI S.p.A. | A circuit for protection against polarity reversal in the supply of an electric circuit |
| CN201570860U (en) * | 2009-11-06 | 2010-09-01 | 深圳市同洲电子股份有限公司 | Direct current power circuit with reverse polarity protective function |
| CN101872971A (en) * | 2010-07-02 | 2010-10-27 | 北京星网锐捷网络技术有限公司 | Reverse-connection preventing circuit, reverse-connection preventing processing method and communication equipment |
| CN201898330U (en) * | 2010-11-12 | 2011-07-13 | 无锡新茂科技有限责任公司 | Reverse-connection-preventive circuit |
| CN201975786U (en) * | 2010-12-30 | 2011-09-14 | 上海日立电器有限公司 | Reverse connection prevention circuit of low-voltage direct-current power supply compressor |
| CN202260430U (en) * | 2011-08-05 | 2012-05-30 | 三一重机有限公司 | Interface protection circuit for excavator controller |
| CN103036226A (en) * | 2012-12-06 | 2013-04-10 | 南京莱斯信息技术股份有限公司 | Low-cost and low-power-consumption power supply reverse connection protection circuit and protection method of the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824855A (en) * | 2014-03-20 | 2014-05-28 | 绍兴光大芯业微电子有限公司 | Complementary metal-oxide-semiconductor (CMOS) adjustment integrated circuit structure with power supply transposition protection function |
| CN103824855B (en) * | 2014-03-20 | 2016-06-08 | 绍兴光大芯业微电子有限公司 | The CMOS with reverse power connection protection function adjusts integrated circuit structure |
| CN111133650A (en) * | 2017-09-26 | 2020-05-08 | 罗伯特·博世有限公司 | Multi-branch power supply unit for vehicle control device |
| CN110962525A (en) * | 2018-09-30 | 2020-04-07 | 广东威灵汽车部件有限公司 | Electric automobile, compressor and control method and device of compressor |
| CN110962525B (en) * | 2018-09-30 | 2021-10-22 | 广东威灵汽车部件有限公司 | Electric automobile, compressor and control method and device of compressor |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131211 |