CN203739812U - Power circuit with turn-off function - Google Patents
Power circuit with turn-off function Download PDFInfo
- Publication number
- CN203739812U CN203739812U CN201420148301.4U CN201420148301U CN203739812U CN 203739812 U CN203739812 U CN 203739812U CN 201420148301 U CN201420148301 U CN 201420148301U CN 203739812 U CN203739812 U CN 203739812U
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- China
- Prior art keywords
- turn
- circuit module
- power
- switch circuit
- power supply
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Abstract
The utility model discloses a power circuit with turn-off function. The power circuit with turn-off function comprises a battery wire, a power supply chip, a micro-processor and an enable signal input wire, wherein a switch circuit module is mounted between the battery wire and the power supply chip, the micro-processor and the enable signal input wire are connected to the switch circuit module through an or gate logic circuit, and power is supplied for the micro-processor through the power supply chip. The power circuit with turn-off function enables the static power consumption of a system to be effectively lowered, enables the production cost to be greatly lowered through using discrete components to build the switch circuit module, is capable of resisting static electricity and power pulse interference, and is good for the industry development.
Description
Technical field
The utility model relates to a kind of power circuit with turn-off function, particularly the vehicle power circuit with turn-off function.
Background technology
Current vehicle electronics product requires higher to quiescent current, conventionally need in actual applications the power supply chip of select tape turn-off function to can export by power cutoff in the time of standby, thereby reduction quiescent dissipation, and the power supply chip with turn-off function on the market and do not differ larger with the power supply chip price of turn-off function, generally not expensive 50% left and right of the power supply chip with turn-off function of the ratio of the power supply chip with turn-off function, in car production in order to ensure the performance quality of vehicle electronics product, need to buy the power supply chip with turn-off function, but but strengthen production cost.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of power circuit with turn-off function of realizing the quiescent current that effectively reduces cheaply product by external discrete component.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of power circuit with turn-off function, comprise battery line and power supply chip, between described battery line and power supply chip, switch circuit module connects, also comprise by or gate logic be connected to microprocessor and the enable signal input line of the Enable Pin of switch circuit module, described microprocessor is powered by power supply chip.
Described enable signal input line comprises at least one in ignition wire, CAN bus and LIN bus.
Described switch circuit module comprises controls the PNP aerotron Q1 and the NPN aerotron Q2 that turn-off, the Enable Pin of described switch circuit module is by the base stage of electric resistance partial pressure connecting triode Q2, the base stage of the collecting electrode output connecting triode Q1 of aerotron Q2, the emitter of aerotron Q1 and collecting electrode are connected respectively the confession electrical input of battery line and power supply chip.
The collecting electrode of described aerotron Q2 provides collector bias current by battery line by biasing resistor.
The Enable Pin of described switch circuit module is connected with stabilivolt.
Described or gate logic comprises at least two common cathode diodes, the Enable Pin of each diode cathode connecting valve circuit module, the anodic bonding microprocessor control end of each diode and each enable signal input line.
Enable signal input line and main control chip form or gate control logic switch circuit module, work as ignition wire, after CAN bus or the energising of LIN bus, the conducting of switch circuit module, thereby the electric current of battery line is by switch circuit module input power chip, power supply chip obtains after power supply voltage, output voltage, main control chip is started working after obtaining power supply, now power-off of ignition wire, but main control chip is opened, main control chip, the lasting conducting of the wherein at least one road signal control switch circuit module in CAN bus or LIN bus, until circuit working complete after governor circuit closing switch circuit module when turn-offing, reach the object that reduces static system power consumption.
Compared with prior art, the utlity model has following advantage:
The utility model provides a kind of power circuit with turn-off function, by be provided with switch circuit module between battery line and power supply chip, and by main control chip and enable signal input line composition control switch circuit module or gate control logic, the effectively quiescent dissipation of reduction system, the switch circuit module that uses discrete component to build, reduce widely productive costs, and there is performance antistatic and that power pulse disturbs, be conducive to industry development.
Brief description of the drawings
Fig. 1 is the utility model integral structure schematic diagram;
Fig. 2 is the utility model switch circuit module specific embodiment electrical block diagram.
Detailed description of the invention
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is explained in further detail.
Embodiment
As shown in Figure 1, 2, a kind of power circuit with turn-off function, comprise the battery line, power supply chip, main control chip and the enable signal input line that connect successively, the enable signal input line of the present embodiment is set to ignition wire, between described battery line and power supply chip, be provided with switch circuit module, described main control chip and ignition wire composition control switch circuit module or gate control logic.
Ignition wire and main control chip form or gate control logic switch circuit module, when after ignition wire energising, the conducting of switch circuit module, thereby the electric current of battery line is by switch circuit module input power chip, power supply chip obtains after power supply voltage, output voltage, main control chip is started working after obtaining power supply, now power-off of ignition wire, but main control chip has been opened and the lasting conducting of master cock circuit module, until circuit working complete after governor circuit closing switch circuit module when turn-offing, reach the object that reduces static system power consumption.
Described switch circuit module comprises controls the PNP aerotron Q1 and the NPN aerotron Q2 that turn-off, the base stage of described aerotron Q1 is connected with one end of a resistance R 2, a resistance R 3 and a capacitor C 3 parallel with one another, the emitter of described aerotron Q1 connects one end of a resistance R 1 and a capacitor C 1 simultaneously and is connected in battery line simultaneously, and the collecting electrode of described aerotron Q1 is connected in power supply chip for electrical input.
The base stage of described aerotron Q2 connects one end, one end of a resistance R 4, a resistance R 5, a zener diode D5 negative pole, a resistance R 6, diode D2 and an ignition wire of a capacitor C 5 successively, the grounded emitter of described aerotron Q2, the collecting electrode of aerotron Q2 connects the MCU_CTRL end of base stage, capacitor C 6, zener diode D5 negative pole, diode D1 and the main control chip of the other end, capacitor C 4, the aerotron Q2 of resistance R parallel with one another 2, R3 and capacitor C 3 successively.
The other end of described resistance R 1 and capacitor C 1 parallel connection is connected in the base stage of aerotron Q1, connects a capacitor C 2 between the base stage of described aerotron Q1 and collecting electrode, the other end ground connection of the positive pole of described zener diode D5, the other end of resistance R 4, capacitor C 5.Wherein the effect of zener diode D5 is the antistatic and power pulse jamming performance that improves circuit.
Described diode D1 is identical with diode D2 direction, in case the MCU_CTRL of stop live wire and main control chip holds mutual crosstalk, makes the MCU_CTRL end formation of ignition wire and main control chip or the logic of door control switch circuit module simultaneously.
As shown in Figure 2, after automotive ignition, ignition wire energising, now ignition wire is through diode D2, resistance R 6, R5, after R4 dividing potential drop, be met the voltage that aerotron Q2 opens, thereby aerotron Q2 enters saturation conduction state, now battery line voltage is through resistance R 1, R2, R3 and aerotron Q2 form path, Q1 is opened and enter saturation conduction state, now the voltage of the emitter and collector of aerotron Q1 is approximately equal, be power supply chip is approximately equal to battery line voltage for the voltage of electrical input, thereby power supply chip acquisition voltage output voltage are to system power supply, vehicle-mounted product is started working, simultaneously control chip is started working and MCU_CTRL level is drawn high and through diode D1 with ignition wire forms or the logic control mode master cock circuit module of door.
Adopt control circuit switch in this way, after ignition wire power down, control chip still can be worked by master cock circuit module, the state that need to remember system before shutdown for system carries out memory operation, until the system all motion action that must carry out closing switch circuit module again after completing before shutdown, thereby reach the object that reduces static system power consumption, and there is performance antistatic and that power pulse disturbs.
The utility model provides a kind of power circuit with turn-off function, by be provided with switch circuit module between battery line and power supply chip, and by main control chip and ignition wire composition control switch circuit module or gate control logic, the effectively quiescent dissipation of reduction system, the switch circuit module that uses discrete component to build, reduce widely productive costs, be conducive to industry development.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (6)
1. the power circuit with turn-off function, comprise battery line and power supply chip, it is characterized in that: switch circuit module is set between described battery line and power supply chip and connects, also comprise by or gate logic be connected to microprocessor and the enable signal input line of the Enable Pin of switch circuit module, described microprocessor is powered by power supply chip.
2. the power circuit with turn-off function according to claim 1, is characterized in that: described enable signal input line comprises at least one in ignition wire, CAN bus and LIN bus.
3. the power circuit with turn-off function according to claim 1 and 2, it is characterized in that: described switch circuit module comprises controls the PNP aerotron Q1 and the NPN aerotron Q2 that turn-off, the Enable Pin of described switch circuit module is by the base stage of electric resistance partial pressure connecting triode Q2, the base stage of the collecting electrode output connecting triode Q2 of aerotron Q2, the emitter of aerotron Q1 and collecting electrode are connected respectively the confession electrical input of battery line and power supply chip.
4. the power circuit with turn-off function according to claim 3, is characterized in that: the collecting electrode of described aerotron Q2 provides collector bias current by battery line by biasing resistor.
5. the power circuit with turn-off function according to claim 3, is characterized in that: the Enable Pin of described switch circuit module is connected with stabilivolt.
6. the power circuit with turn-off function according to claim 4, it is characterized in that: described or gate logic comprises at least two common cathode diodes, the Enable Pin of each diode cathode connecting valve circuit module, the anodic bonding microprocessor control end of each diode and each enable signal input line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148301.4U CN203739812U (en) | 2014-03-31 | 2014-03-31 | Power circuit with turn-off function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420148301.4U CN203739812U (en) | 2014-03-31 | 2014-03-31 | Power circuit with turn-off function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203739812U true CN203739812U (en) | 2014-07-30 |
Family
ID=51339650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420148301.4U Expired - Fee Related CN203739812U (en) | 2014-03-31 | 2014-03-31 | Power circuit with turn-off function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203739812U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283261A (en) * | 2014-09-29 | 2015-01-14 | 捷开通讯科技(上海)有限公司 | Circuit avoiding static power consumption |
| CN106740133A (en) * | 2016-12-30 | 2017-05-31 | 广东美芝制冷设备有限公司 | The vehicle-mounted CAN power circuit of electric automobile, electric automobile and its power-supply system |
| CN106950876A (en) * | 2017-03-20 | 2017-07-14 | 上海理工大学 | Power supply is locked and wake-up circuit and power module |
| CN107327695A (en) * | 2017-07-14 | 2017-11-07 | 广州巴兰仕机械有限公司 | Hand-held default formula inflator control device |
-
2014
- 2014-03-31 CN CN201420148301.4U patent/CN203739812U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283261A (en) * | 2014-09-29 | 2015-01-14 | 捷开通讯科技(上海)有限公司 | Circuit avoiding static power consumption |
| CN104283261B (en) * | 2014-09-29 | 2017-01-25 | 捷开通讯科技(上海)有限公司 | Circuit avoiding static power consumption |
| CN106740133A (en) * | 2016-12-30 | 2017-05-31 | 广东美芝制冷设备有限公司 | The vehicle-mounted CAN power circuit of electric automobile, electric automobile and its power-supply system |
| CN106740133B (en) * | 2016-12-30 | 2018-12-04 | 广东美芝制冷设备有限公司 | Vehicle-mounted CAN power circuit, electric car and its power-supply system of electric car |
| CN106950876A (en) * | 2017-03-20 | 2017-07-14 | 上海理工大学 | Power supply is locked and wake-up circuit and power module |
| CN107327695A (en) * | 2017-07-14 | 2017-11-07 | 广州巴兰仕机械有限公司 | Hand-held default formula inflator control device |
| CN107327695B (en) * | 2017-07-14 | 2023-02-21 | 广州巴兰仕机械有限公司 | Hand-held preset inflator control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140730 Termination date: 20150331 |
|
| EXPY | Termination of patent right or utility model |