CN203984230U - A kind of power circuit of automobile electric control system - Google Patents
A kind of power circuit of automobile electric control system Download PDFInfo
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- CN203984230U CN203984230U CN201420393999.6U CN201420393999U CN203984230U CN 203984230 U CN203984230 U CN 203984230U CN 201420393999 U CN201420393999 U CN 201420393999U CN 203984230 U CN203984230 U CN 203984230U
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- 230000005669 field effect Effects 0.000 claims abstract description 31
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 41
- 238000000034 method Methods 0.000 abstract description 3
- 238000005538 encapsulation Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model relates to automobile electric control system, is specifically related to a kind of power circuit of automobile electric control system.Comprise MOS field-effect transistor; also comprise drive circuit; filter protective circuit and voltage stabilizing circuit; the output of described drive circuit is connected with triode T; the output of described drive circuit is connected with the base stage of triode T; the collector electrode of described triode T is connected with the grid of MOS field-effect transistor, and the output of described filter protective circuit is connected with the drain electrode of MOS field-effect transistor, and described voltage stabilizing circuit input is connected with the source electrode of MOS field-effect transistor.The utility model can be realized ignition lock ACC shelves, ON shelves control on/off, realizes lower electric delay function, and reserved control channel for subsequent use.Do not adopt encapsulation and integration chip, but the ball bearing made using that has adopted the discrete component method for designing that can only realize required function to connect into is avoided the waste of resource effectively, has reduced cost.
Description
Technical field
The utility model relates to automobile electric control system, is specifically related to a kind of power circuit of automobile electric control system.
Background technology
Along with the development of automotive electronic technology, the working method of automobile electronic controller becomes increasingly complex, and a lot of application requirements are realized multiplexer channel control on/off, delayed-breaking-off function.This type of common chip all integrated hardware house dog, CAN/LIN driver module, multiple power supplies output conventionally on the market.In the practical application of vehicle, often do not need to use repertoire, if use integrated circuit can cause the wasting of resources, increase unnecessary cost.
Utility model content
The purpose of this utility model is to provide a kind of power circuit of automobile electric control system.It adopts discrete component design, by only needing the function using to connect into a new circuit, has effectively saved the energy.
The technical solution of the utility model is: a kind of power circuit of automobile electric control system; comprise MOS field-effect transistor; also comprise drive circuit; filter protective circuit and voltage stabilizing circuit; the output of described drive circuit is connected with triode T; the output of described drive circuit is connected with the base stage of triode T; the collector electrode of described triode T is connected with the grid of MOS field-effect transistor; the output of described filter protective circuit is connected with the drain electrode of MOS field-effect transistor, and described voltage stabilizing circuit input is connected with the source electrode of MOS field-effect transistor.
Further; described filter protective circuit comprises positive source E+, power cathode E-and diode D1; the positive pole of described diode D1 is connected with positive source E+; between the positive pole of described diode D1 and power cathode E-, be connected in parallel to the first capacitance group and two-way TVS diode D2; the negative pole of described diode D1 is connected in parallel to capacitor C 3, C4, C5 and common mode inductance L1; the output of described capacitor C 3, C4, C5 is connected with power cathode E-, the output head grounding of described common mode inductance L1.
Further, the first described capacitance group comprises the capacitor C 1 and the C2 that are connected in series.
Further, described drive circuit comprises ACC signal input port, ON signal input port, I/O port and at least one control port for subsequent use.
Further, described drive circuit also comprises the diode group being connected between drive circuit input and the base stage of triode T, between described diode group input and ground, is connected with the second capacitance group.
Further, described diode group comprises respectively and I/O port, ACC signal input port, ON signal input port and two diode D5, D6, D7, D8 and D9 that control port for subsequent use is connected.
Further, the second described capacitance group comprises the capacitor C 6, C7, C8 and the C9 that are connected with D6, D7, D8 and D9 input respectively.
Further, between the drain electrode of described MOS field-effect transistor and grid, be connected in parallel to voltage stabilizing didoe D3 and resistance R 4, between the collector electrode of the positive pole of described voltage stabilizing didoe D3 and triode T, be connected with resistance R 3, between the base stage of described triode T and emitter, be connected with voltage stabilizing didoe D4, the grounded emitter of described triode T, between described diode group and the base stage of triode T, be connected with resistance R 1, described resistance R 1 input is connected with resistance R 2, described resistance R 1 output is connected with capacitor C 10, described resistance R 2 and the output head grounding of capacitor C 10.
Further, described voltage stabilizing circuit comprises LDO low pressure difference linear voltage regulator, described MOS field-effect transistor source electrode is connected with the I mouth of LDO low pressure difference linear voltage regulator, and the Q mouth of described LDO low pressure difference linear voltage regulator is circuit supply voltage VCC output port.
Further, between described MOS field-effect transistor source electrode and the I mouth of LDO low pressure difference linear voltage regulator, be connected with inductance L 2, described inductance L 2 inputs are connected in parallel to capacitor C 11 and C12, described inductance L 2 outputs are connected in parallel to capacitor C 13, C14, C15 and C16, described capacitor C 11, C12, C13, C14, the output head grounding of C15 and C16, described C15 and the output of C16 are connected with capacitor C 17, the output of described capacitor C 17 is connected with the D mouth of LDO low pressure difference linear voltage regulator, between the Q mouth of described LDO low pressure difference linear voltage regulator and ground, be connected in parallel to capacitor C 18, C19 and C20.
The beneficial effects of the utility model are: for filter protective circuit; between power positive cathode, connect multiple electric capacity; played the effect of filtering, the prime that capacitor C 1 and C2 are connected in series in to power supply, has prevented the short circuit that one of them capacitance damage causes effectively.Between power positive cathode, connect common mode inductance L1, filtering common mode interference signal.Connect diode D1 at positive source, while preventing reverse power connection, damage circuit, between power positive cathode, connect TVS diode, prevent that power positive cathode pulse from causing damage to late-class circuit.The input of drive circuit is many signal input ports, and by the saturated or cut-off mode of triode T, whether the conducting of control MOS field-effect transistor, realized the function of many signal control power supplies break-make.The level of the I/O port of the time block control drive circuit by MCU changes, and can realize lower electric delay function.Whole circuit does not adopt encapsulation and integration chip, but the ball bearing made using that has adopted the discrete component method for designing that can only realize required function to connect into has been avoided the waste of resource effectively, has reduced cost.
Brief description of the drawings
Fig. 1 is connecting circuit figure of the present utility model;
Fig. 2 is connecting circuit reduced graph of the present utility model;
In figure: 1-filter protective circuit; 2-drive circuit, 3-voltage stabilizing circuit, the 4-the first capacitance group; 5-diode group; the 6-the second capacitance group, 7-supply power voltage VCC output port, 8-ACC signal input port; 9-ON signal input port; 10-I/O port, 11-control port for subsequent use, 12-LDO low pressure difference linear voltage regulator.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As illustrated in fig. 1 and 2, the utility model comprises MOS field-effect transistor, drive circuit 2, filter protective circuit 1 and voltage stabilizing circuit 3.The output of drive circuit 2 is connected with a triode T, and the output of drive circuit is connected with the base stage of triode T, and the collector electrode of triode T is connected with the grid of MOS field-effect transistor.
The output of filter protective circuit 1 is connected with the drain electrode of MOS field-effect transistor, and the input of voltage stabilizing circuit 3 is connected with the source electrode of MOS field-effect transistor.Filter protective circuit 1 comprises positive source E+, power cathode E-and diode D1, and the positive pole of diode D1 is connected with positive source E+.Between the positive pole of diode D1 and power cathode E-, be connected in parallel to the first capacitance group 4 and two-way TVS diode D2, the first capacitance group 4 is made up of the capacitor C 1 and the C2 that are connected in series.The negative pole of diode D1 is connected in parallel to capacitor C 3, C4, C5 and common mode inductance L1, and the output of capacitor C 3, C4, C5 is connected with power cathode E-, the output head grounding of common mode inductance L1.
Drive circuit 2 comprise ACC signal input port 8, ON signal input port 9, I/O port one 0 and two control ports 11 for subsequent use.Wherein control port 11 for subsequent use is used for carrying out some extra miscellaneous functions, for example, to meet specific demand: the filling soon and trickle charge etc. of charger.Drive circuit 2 also comprises the diode group 5 being connected between drive circuit 2 inputs and the base stage of triode T, is connected with the second capacitance group 6 between diode group 5 inputs and ground.Diode group 5 comprises respectively and I/O port one 0, ACC signal input port 8, ON signal input port 9 and two diode D5, D6, D7, D8 and D9 that control port 11 for subsequent use is connected.The second capacitance group 6 comprises the capacitor C 6, C7, C8 and the C9 that are connected with D6, D7, D8 and D9 input respectively.Between the drain electrode of MOS field-effect transistor and grid, be connected in parallel to voltage stabilizing didoe D3 and resistance R 4, between the collector electrode of the positive pole of voltage stabilizing didoe D3 and triode T, be connected with resistance R 3, between the base stage of triode T and emitter, be connected with voltage stabilizing didoe D4, the grounded emitter of triode T, between the base stage of diode group 5 and triode T, be connected with resistance R 1, resistance R 1 input is connected with resistance R 2, and resistance R 1 output is connected with capacitor C 10, the output head grounding of resistance R 2 and capacitor C 10.
Voltage stabilizing circuit 3 comprises LDO low pressure difference linear voltage regulator 12, and MOS field-effect transistor source electrode is connected with the I mouth of LDO low pressure difference linear voltage regulator 12, and the Q mouth of LDO low pressure difference linear voltage regulator 12 is circuit supply voltage VCC output port 7.Between the I mouth of MOS field-effect transistor source electrode and LDO low pressure difference linear voltage regulator 12, be connected with inductance L 2, inductance L 2 inputs are connected in parallel to capacitor C 11 and C12, inductance L 2 outputs are connected in parallel to capacitor C 13, C14, C15 and C16, the output head grounding of capacitor C 11, C12, C13, C14, C15 and C16, the output of C15 and C16 is connected with capacitor C 17, the output of capacitor C 17 is connected with the D mouth of LDO low pressure difference linear voltage regulator 12, between the Q mouth of LDO low pressure difference linear voltage regulator 12 and ground, is connected in parallel to capacitor C 18, C19 and C20.
In filter protective circuit 1, capacitor C 1 and C2 are connected in series in to the prime of power supply, have effectively prevented the short circuit that one of them capacitance damage causes, meanwhile, capacitor C 1 and C2 have played the effect of filtering.At a diode D1 of the positive level series connection of power supply, prevent reversal connection.Between power positive cathode, connect two-way TVS diode D2, prevent that positive-negative polarity pulse from causing damage to late-class circuit.And be connected with polar capacitor C3, C4 and common capacitor C 5 between the negative pole of diode D1 and power cathode, be used for absorbing power supply input clutter.The connection of common mode inductance L1 can filtering common mode interference signal.In like manner, the second capacitance group 6 and below a series of electric capacity have all played the effect of filtering, and diode group 5 plays the effect that prevents that each input signal from crosstalking mutually.Because TVS diode can be in the time that voltage exceedes minimum break-down voltage; transient switching is connected voltage stabilizing didoe D4, between the drain electrode and grid of MOS field-effect transistor between the base stage of triode T and transmitter; connect voltage stabilizing didoe D3, can play the effect of protection late-class circuit.
The input of drive circuit 2 is many signal input ports; when ACC signal input port 8, ON signal input port 9, I/O port one 0 and two control ports 11 for subsequent use are wherein when any one or several port input high level; by the switching function of triode T; the conducting of driven MOS field-effect transistor; flow in voltage stabilizing circuit by MOS field-effect transistor by the filtered electric current of filter protective circuit 1; again through filtering several times; under the effect of LDO low pressure difference linear voltage regulator 12, the constant voltage needing by the output of Q mouth.In the time powering on, I/O port one 1 is placed in high level by MCU, in the time electricity being detected under ignition lock, over time I/O port one 1 is set to low level by the timing function of MCU timer, thereby realize lower electric delay function.
Following table is depicted as control logic relation of the present utility model:
In from table, can find out, when in ignition lock ACC, ON, SRART, I/O port and control channel for subsequent use when any one or several input high level, can both the conducting of driven MOS field-effect transistor, in the time that all input signals are all low level, MOS field-effect transistor disconnects.Thereby realize, controller powers on and delay function.
The above; be only embodiment of the present utility model, it should be pointed out that any those of ordinary skill in the art are in the disclosed technical scope of the utility model; the variation that can expect easily or replacement, within all should being encompassed in protection range of the present utility model.
Claims (10)
1. the power circuit of an automobile electric control system; comprise MOS field-effect transistor; it is characterized in that: also comprise drive circuit; filter protective circuit and voltage stabilizing circuit; the output of described drive circuit is connected with triode T; the output of described drive circuit is connected with the base stage of triode T; the collector electrode of described triode T is connected with the grid of MOS field-effect transistor; the output of described filter protective circuit is connected with the drain electrode of MOS field-effect transistor, and described voltage stabilizing circuit input is connected with the source electrode of MOS field-effect transistor.
2. the power circuit of a kind of automobile electric control system as claimed in claim 1, it is characterized in that: described filter protective circuit comprises positive source E+, power cathode E-and diode D1, the positive terminal of described diode D1 is connected with positive source E+, between the positive terminal of described diode D1 and power cathode E-, be connected in parallel to the first capacitance group and two-way TVS diode D2, the negative pole end of described diode D1 is connected in parallel to capacitor C 3, C4, C5 and common mode inductance L1, described capacitor C 3, C4, the output of C5 is connected with power cathode E-, the output head grounding of described common mode inductance L1.
3. the power circuit of a kind of automobile electric control system as claimed in claim 1 or 2, is characterized in that: the first described capacitance group comprises the capacitor C 1 and the C2 that are connected in series.
4. the power circuit of a kind of automobile electric control system as claimed in claim 1, is characterized in that: described drive circuit comprises ACC signal input port, ON signal input port, I/O port and at least one control port for subsequent use.
5. the power circuit of a kind of automobile electric control system as described in claim 1 or 4, it is characterized in that: described drive circuit also comprises the diode group being connected between drive circuit input and the base stage of triode T, between described diode group input and ground, is connected with the second capacitance group.
6. the power circuit of a kind of automobile electric control system as claimed in claim 5, is characterized in that: described diode group comprises respectively and I/O port, ACC signal input port, ON signal input port and two diode D5, D6, D7, D8 and D9 that control port for subsequent use is connected.
7. the power circuit of a kind of automobile electric control system as claimed in claim 5, is characterized in that: the second described capacitance group comprises the capacitor C 6, C7, C8 and the C9 that are connected with D6, D7, D8 and D9 input respectively.
8. the power circuit of a kind of automobile electric control system as claimed in claim 5, it is characterized in that: between the drain electrode of described MOS field-effect transistor and grid, be connected in parallel to voltage stabilizing didoe D3 and resistance R 4, between the collector electrode of the positive pole of described voltage stabilizing didoe D3 and triode T, be connected with resistance R 3, between the base stage of described triode T and emitter, be connected with voltage stabilizing didoe D4, the grounded emitter of described triode T, between described diode group and the base stage of triode T, be connected with resistance R 1, described resistance R 1 input is connected with resistance R 2, described resistance R 1 output is connected with capacitor C 10, described resistance R 2 and the output head grounding of capacitor C 10.
9. the power circuit of a kind of automobile electric control system as claimed in claim 1, it is characterized in that: described voltage stabilizing circuit comprises LDO low pressure difference linear voltage regulator, described MOS field-effect transistor source electrode is connected with the I mouth of LDO low pressure difference linear voltage regulator, and the Q mouth of described LDO low pressure difference linear voltage regulator is circuit supply voltage VCC output port.
10. the power circuit of a kind of automobile electric control system as described in claim 1 or 9, it is characterized in that: between described MOS field-effect transistor source electrode and the I mouth of LDO low pressure difference linear voltage regulator, be connected with inductance L 2, described inductance L 2 inputs are connected in parallel to capacitor C 11 and C12, described inductance L 2 outputs are connected in parallel to capacitor C 13, C14, C15 and C16, described capacitor C 11, C12, C13, C14, the output head grounding of C15 and C16, described C15 and the output of C16 are connected with capacitor C 17, the output of described capacitor C 17 is connected with the D mouth of LDO low pressure difference linear voltage regulator, between the Q mouth of described LDO low pressure difference linear voltage regulator and ground, be connected in parallel to capacitor C 18, C19 and C20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393999.6U CN203984230U (en) | 2014-07-16 | 2014-07-16 | A kind of power circuit of automobile electric control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420393999.6U CN203984230U (en) | 2014-07-16 | 2014-07-16 | A kind of power circuit of automobile electric control system |
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| Publication Number | Publication Date |
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| CN203984230U true CN203984230U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420393999.6U Expired - Fee Related CN203984230U (en) | 2014-07-16 | 2014-07-16 | A kind of power circuit of automobile electric control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031692A (en) * | 2018-01-10 | 2019-07-19 | 厦门雅迅网络股份有限公司 | A kind of auxiliary mobile unit accurately identifies the method and circuit of ACC state |
| CN111817561A (en) * | 2020-06-02 | 2020-10-23 | 东风柳州汽车有限公司 | Binary channels step-down circuit |
| CN114496979A (en) * | 2021-09-06 | 2022-05-13 | 上海芯圣电子股份有限公司 | Promote chip territory structure of LDO interference killing feature |
-
2014
- 2014-07-16 CN CN201420393999.6U patent/CN203984230U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031692A (en) * | 2018-01-10 | 2019-07-19 | 厦门雅迅网络股份有限公司 | A kind of auxiliary mobile unit accurately identifies the method and circuit of ACC state |
| CN111817561A (en) * | 2020-06-02 | 2020-10-23 | 东风柳州汽车有限公司 | Binary channels step-down circuit |
| CN111817561B (en) * | 2020-06-02 | 2023-03-10 | 东风柳州汽车有限公司 | Two-channel voltage reduction circuit |
| CN114496979A (en) * | 2021-09-06 | 2022-05-13 | 上海芯圣电子股份有限公司 | Promote chip territory structure of LDO interference killing feature |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |