CN207459700U - Overvoltage protection and anti-reverse vehicle electronic circuit module based on zero quiescent dissipation - Google Patents
Overvoltage protection and anti-reverse vehicle electronic circuit module based on zero quiescent dissipation Download PDFInfo
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- CN207459700U CN207459700U CN201721695178.8U CN201721695178U CN207459700U CN 207459700 U CN207459700 U CN 207459700U CN 201721695178 U CN201721695178 U CN 201721695178U CN 207459700 U CN207459700 U CN 207459700U
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Abstract
The utility model discloses a kind of integration module circuits that can realize multi-functional requirement; and be easily achieved in practice, circuit framework is simple, operation is more stable has the overvoltage protection based on zero quiescent dissipation of multiple protection functions and anti-reverse vehicle electronic circuit module.Including over-pressed control circuit, reverse-connection protection circuit, external enabled control circuit, the over-pressed control circuit is made of voltage-stabiliser tube ZD1, resistance R2, resistance R3 and triode Q1；The reverse-connection protection circuit is made of double metal-oxide-semiconductor Q2, voltage-stabiliser tube ZD2 and resistance R6；The outside enables control circuit and is made of triode Q3, resistance R10, resistance R11 and resistance R12.
Description
Technical field
The utility model is related to a kind of circuit modules for vehicle electronics product, particularly relate to a kind of mainly to protection
The vehicle electronics product or static based on zero based on 12V power-supply systems used in grade and the more demanding occasion of integrated level
The overvoltage protection of loss and anti-reverse vehicle electronic circuit module.
Background technology
In the prior art, vehicle electronics product has higher requirement in terms of voltage protection grade and circuit level,
But for all each own individually protection circuit of different protection requirements, each more dispersed, integrated level is not high.It is not suitable for body
Product requires small, the higher occasion of integrated level, and various protection circuits, which separate, individually to be implemented, and shortcoming is can only to play independent protective,
And it cannot protect simultaneously.If can have a kind of circuit that multi-protective function can be integrated in one, with an integration module
It realizes multiple technologies requirement, cannot not only save cost, space can also be saved.It is same multiple at the same time it can also reach
Purpose is protected, and utilization can reliablely and stablely work in the product.Metal-oxide-semiconductor is generally connected on defeated by reverse connection prevention protection circuit
On the cathode entered；Metal-oxide-semiconductor is generally connected on the anode of input by overvoltage protection；Quiescent dissipation is generally by the enabled letter in outside
Number control；The requirement of three of the above technology is all to complete its function by individual circuit.For the completion of low cost and high reliability
The requirement of its technical functionality, it is therefore necessary to design it is a kind of can integrate anti-reverse, overvoltage protection, zero quiescent dissipation circuit
Module.
In view of problem above, is badly in need of a kind of integration module circuit that can realize multi-functional requirement at present, and in reality
It is easily achieved in border, the circuit module with multiple protection functions that circuit framework is simple, operation is more stable.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of integration module electricity that can realize multi-functional requirement
Road, and being easily achieved in practice, circuit framework is simple, operation is more stable has the static based on zero of multiple protection functions
The overvoltage protection of loss and anti-reverse vehicle electronic circuit module.
In order to solve the above technical problems, technical solution provided by the utility model is：A kind of mistake based on zero quiescent dissipation
Pressure protection and anti-reverse vehicle electronic circuit module, including over-pressed control circuit, reverse-connection protection circuit, external enabled control circuit, institute
The over-pressed control circuit stated is made of voltage-stabiliser tube ZD1, resistance R2, resistance R3 and triode Q1；The reverse-connection protection circuit by
Double metal-oxide-semiconductor Q2, voltage-stabiliser tube ZD2 and resistance R6 compositions；The outside enables control circuit by triode Q3, resistance R10, resistance
R11 and resistance R12 compositions；The specific connection relation of circuit is：The anode of automobile batteries respectively with the cathode of voltage-stabiliser tube ZD1, steady
The cathode of pressure pipe ZD2 is connected, and the anode of automobile batteries connects the 7th pin, the 8th pin of resistance R6 and double metal-oxide-semiconductor Q2 simultaneously
It is connected；The 5th pin, the 6th pin of double metal-oxide-semiconductor Q2 is connected with the output end vo ut of circuit module, and described is double
The first pin and the 3rd pin of metal-oxide-semiconductor Q2 is connected, after the second pin of double metal-oxide-semiconductor Q2, the 4th pin connect and electric
Resistance R6, resistance R12, the anode of voltage-stabiliser tube ZD2 are connected；The base stage of the triode Q1 is grounded by resistance R3, and described three
The base stage of pole pipe Q1 is connected by resistance R2 with the anode of voltage-stabiliser tube ZD1；The base stage of the triode Q3 by resistance R11 and
Ground connection, the base stage of the triode Q3 are connected by resistance R10 with the KL15 enable signals on automobile, the triode Q3
Collector be connected by the second pin of resistance R12 and double metal-oxide-semiconductors, the 4th pin, resistance R6, voltage-stabiliser tube ZD2 anodes.
With the above structure, the utility model has the advantages that：It includes over-pressed control circuit, reverse connecting protection
Circuit, external enabled control circuit, the over-pressed control circuit are made of voltage-stabiliser tube ZD1, resistance R2, R3, triode Q1；Institute
The reverse-connection protection circuit stated is made of metal-oxide-semiconductor Q2, voltage-stabiliser tube ZD2, resistance R6；The outside enables control circuit by triode
Q3, resistance R10, R11, R12 composition；When input voltage is inputted from KL30 ends, usually automobile nominal cell voltage is 12V,
Up to 16V under harsh test conditions, can reach 26V, and maintain a minutes, so, after protecting product
The electronic component in face, it is necessary to source input terminal add in over-voltage protecting function circuit, i.e., by voltage-stabiliser tube ZD1, resistance R2,
R3, triode Q1 form overvoltage protection control circuits, if input voltage up to or over the rated voltage of voltage-stabiliser tube ZD1,
Voltage-stabiliser tube ZD1 will start work, so as to generate electric current on the branch road being made of voltage-stabiliser tube ZD1, resistance R2, R3, in three poles
The base stage of pipe Q1 generates voltage, and the Q1 conductings of control triode, the collector of triode Q1 can be drawn as low level, so as to control three
The base stage of pole pipe Q3, the collector of triode become high level, so, for P-channel metal-oxide-semiconductor Q2, that is, cut off from input
The connection of KL30 and output end vo ut is held, so as to play the purpose of overvoltage protection.Since metal-oxide-semiconductor Q2 is using double metal-oxide-semiconductor knots
Structure, the source electrode of internal two MOS is docking, and the cathode of internal parasitic diode is docking, so, from metal-oxide-semiconductor
Internal structure can play the purpose of anti-reverse protection.Further, since enable signal is enabled from external KL15 signals, i.e., if
When external signal KL15 is high level, modular circuit work, if external signal KL15 is low level, modular circuit, that is, complete
It is stopped, thus it is possible to achieve the purpose that zero quiescent dissipation.
Therefore, the multiple protection functions described in the utility model based on zero quiescent dissipation constitute excellent module electricity
Road.It can both control quiescent dissipation, play energy saving effect, while can play the purpose of multiple circuit protection again, be integrated with
The function of reverse connecting protection and overvoltage protection, drastically increases the integrated level of circuit, and product circuit is compact easy to implement to promote.
In conclusion providing a kind of integration module circuit that can realize multi-functional requirement, and it is easy in practice
Realization, the overvoltage protection based on zero quiescent dissipation with multiple protection functions that circuit framework is simple, operation is more stable is with preventing
Reversal connection vehicle electronic circuit module.
Description of the drawings
Fig. 1 is the overvoltage protection based on zero quiescent dissipation in the utility model and the circuit original of anti-reverse vehicle electronic circuit module
Reason figure.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
With reference to attached drawing 1, a kind of overvoltage protection based on zero quiescent dissipation and anti-reverse vehicle electronic circuit module, including excessively voltage-controlled
Circuit processed, reverse-connection protection circuit, external enabled control circuit, the over-pressed control circuit is by voltage-stabiliser tube ZD1, resistance R2, electricity
Hinder R3 and triode Q1 compositions；The reverse-connection protection circuit is made of double metal-oxide-semiconductor Q2, voltage-stabiliser tube ZD2 and resistance R6；Described
The enabled control circuit in outside is made of triode Q3, resistance R10, resistance R11 and resistance R12；The specific connection relation of circuit is：
Cathode of the anode of automobile batteries respectively with the cathode of voltage-stabiliser tube ZD1, voltage-stabiliser tube ZD2 is connected, and the anode of automobile batteries connects simultaneously
Connecting resistance R6 is connected with the 7th pin, the 8th pin of double metal-oxide-semiconductor Q2；The 5th pin, the 6th pin of double metal-oxide-semiconductor Q2
It is connected with the output end vo ut of circuit module, the first pin and the 3rd pin of double metal-oxide-semiconductor Q2 are connected, and described is double
It is connected after the second pin of metal-oxide-semiconductor Q2, the connection of the 4th pin with the anode of resistance R6, resistance R12, voltage-stabiliser tube ZD2；Described three
The base stage of pole pipe Q1 is grounded by resistance R3, the anode phase that the base stage of the triode Q1 passes through resistance R2 and voltage-stabiliser tube ZD1
Even；The base stage of the triode Q3 passes through resistance R10 and vapour by resistance R11 and ground connection, the base stage of the triode Q3
KL15 enable signals on vehicle are connected, the collector of the triode Q3 by the second pin of resistance R12 and double metal-oxide-semiconductors,
4th pin, resistance R6, voltage-stabiliser tube ZD2 anodes are connected.
Entire modular circuit includes over-pressed control circuit, reverse-connection protection circuit, external enabled control circuit, the overvoltage
Control circuit is made of voltage-stabiliser tube ZD1, resistance R2, R3, triode Q1；The reverse-connection protection circuit is by metal-oxide-semiconductor Q2, voltage-stabiliser tube
ZD2, resistance R6 are formed；The outside enables control circuit and is made of triode Q3, resistance R10, R11, R12；When input electricity
When pressure is inputted from KL30 ends, usually automobile nominal cell voltage is 12V, up to 16V, under harsh test conditions, meeting
Reach 26V, and maintain a minutes, so, in order to protect the electronic component behind product, it is necessary to the input in source
End adds in over-voltage protecting function circuit, i.e., by voltage-stabiliser tube ZD1, resistance R2, R3, triode Q1, forms overvoltage protection control circuits,
If input voltage will start work up to or over the rated voltage of voltage-stabiliser tube ZD1, voltage-stabiliser tube ZD1, so as to by steady
Pressure pipe ZD1, the branch road of resistance R2, R3 composition generate electric current, generate voltage in the base stage of triode Q1, control triode Q1 is led
Logical, the collector of triode Q1 can be drawn as low level, and so as to control the base stage of triode Q3, the collector of triode becomes high
Level, so, for P-channel metal-oxide-semiconductor Q2, that is, the contact from input terminal KL30 and output end vo ut is cut off, so as to play
The purpose of overvoltage protection.Since metal-oxide-semiconductor Q2 is using double metal-oxide-semiconductor structures, the source electrode of internal two MOS is docking, interior
The cathode of the parasitic diode in portion is docking, so, from the internal structure of metal-oxide-semiconductor can anti-reverse protection purpose.In addition,
Since enable signal is enabled from external KL15 signals, i.e., if when external signal KL15 is high level, modular circuit work, such as
When fruit external signal KL15 is low level, modular circuit is stopped completely, thus it is possible to achieve the purpose that zero quiescent dissipation.
The utility model is a kind of based on integrating for zero quiescent dissipation be anti-reverse, modular circuit of overvoltage protection is applied
On vehicle power supply or automobile electronics, it is in the useful improvement made to existing automobile electronics, has very heavy
The practical popularization significance wanted.Its vehicle electronics product will pass through since automobile battery voltage rises sharply the surge voltage brought, such as
Fruit voltage is higher than the pressure-resistant scope of vehicle electronics product, it will and electron product brings fatal damage, causes product that cannot work,
Influence the use of user；The utility model is internally integrated the shut-off or open-minded of double metal-oxide-semiconductors by voltage-stabiliser tube, triode control,
Input power supply is cut off when cell voltage is excessively high, when cell voltage is normal, opens input voltage；It is risen simultaneously using double metal-oxide-semiconductors
To the purpose of good reverse connecting protection, multiple protection functions are in the circuit structure of one, with being finally reached circuit reliably working mesh
's.
Certainly, for the vehicle electronics product of every field, if demand integration multiple protection functions circuit, can make
It is a kind of based on integrating for zero quiescent dissipation be anti-reverse, modular circuit of overvoltage protection with the utility model, as long as its structure is similar,
Function is identical, and within the protection scope of the present patent, details are not described herein.
The utility model and embodiments thereof are described above, this describe it is no restricted, it is attached shown in figure
Also it is one of embodiment of the utility model, actual structure is not limited thereto.All in all if this field it is general
Logical technical staff is enlightened by it, without deviating from the purpose of the present invention, is not inventively designed with being somebody's turn to do
The similar frame mode of technical solution and embodiment, all should belong to the protection range of the utility model.
Claims (1)
1. a kind of overvoltage protection based on zero quiescent dissipation and anti-reverse vehicle electronic circuit module, it is characterised in that：Including excessively voltage-controlled
Circuit processed, reverse-connection protection circuit, external enabled control circuit, the over-pressed control circuit is by voltage-stabiliser tube ZD1, resistance R2, electricity
Hinder R3 and triode Q1 compositions；The reverse-connection protection circuit is made of double metal-oxide-semiconductor Q2, voltage-stabiliser tube ZD2 and resistance R6；Described
The enabled control circuit in outside is made of triode Q3, resistance R10, resistance R11 and resistance R12；The specific connection relation of circuit is：
Cathode of the anode of automobile batteries respectively with the cathode of voltage-stabiliser tube ZD1, voltage-stabiliser tube ZD2 is connected, and the anode of automobile batteries connects simultaneously
Connecting resistance R6 is connected with the 7th pin, the 8th pin of double metal-oxide-semiconductor Q2；The 5th pin, the 6th pin of double metal-oxide-semiconductor Q2
It is connected with the output end vo ut of circuit module, the first pin and the 3rd pin of double metal-oxide-semiconductor Q2 are connected, and described is double
It is connected after the second pin of metal-oxide-semiconductor Q2, the connection of the 4th pin with the anode of resistance R6, resistance R12, voltage-stabiliser tube ZD2；Described three
The base stage of pole pipe Q1 is grounded by resistance R3, the anode phase that the base stage of the triode Q1 passes through resistance R2 and voltage-stabiliser tube ZD1
Even；The base stage of the triode Q3 passes through resistance R10 and vapour by resistance R11 and ground connection, the base stage of the triode Q3
KL15 enable signals on vehicle are connected, the collector of the triode Q3 by the second pin of resistance R12 and double metal-oxide-semiconductors,
4th pin, resistance R6, voltage-stabiliser tube ZD2 anodes are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721695178.8U CN207459700U (en) | 2017-12-08 | 2017-12-08 | Overvoltage protection and anti-reverse vehicle electronic circuit module based on zero quiescent dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721695178.8U CN207459700U (en) | 2017-12-08 | 2017-12-08 | Overvoltage protection and anti-reverse vehicle electronic circuit module based on zero quiescent dissipation |
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| Publication Number | Publication Date |
|---|---|
| CN207459700U true CN207459700U (en) | 2018-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721695178.8U Active CN207459700U (en) | 2017-12-08 | 2017-12-08 | Overvoltage protection and anti-reverse vehicle electronic circuit module based on zero quiescent dissipation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297633A (en) * | 2018-09-29 | 2019-02-01 | 宁波中车时代传感技术有限公司 | Pressure transmitter is used in a kind of monitoring of Cooling Water of Diesel Locomotive system pressure |
| CN109412412A (en) * | 2018-12-14 | 2019-03-01 | 中航华东光电有限公司 | Belt switch reverse-connection preventing circuit |
-
2017
- 2017-12-08 CN CN201721695178.8U patent/CN207459700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109297633A (en) * | 2018-09-29 | 2019-02-01 | 宁波中车时代传感技术有限公司 | Pressure transmitter is used in a kind of monitoring of Cooling Water of Diesel Locomotive system pressure |
| CN109412412A (en) * | 2018-12-14 | 2019-03-01 | 中航华东光电有限公司 | Belt switch reverse-connection preventing circuit |
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