CN112486072B - Low-power-consumption starting circuit - Google Patents
Low-power-consumption starting circuit Download PDFInfo
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- CN112486072B CN112486072B CN202011392860.6A CN202011392860A CN112486072B CN 112486072 B CN112486072 B CN 112486072B CN 202011392860 A CN202011392860 A CN 202011392860A CN 112486072 B CN112486072 B CN 112486072B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Automation & Control Theory (AREA)
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Abstract
The invention discloses a low-power-consumption starting circuit, which comprises: the device comprises an interlocking trigger control circuit, a starting button circuit, an MCU and a voltage conversion circuit. When the key of the startup key circuit is closed, the interlocking trigger control circuit is triggered to work and output a high level to enable the voltage conversion circuit, so that the voltage conversion circuit supplies power to the equipment connected with the output end and the MCU; after the MCU is electrified and works, a high level signal is sent out after a certain time delay, so that the interlocking trigger control circuit stops working. The power-on circuit provided by the invention automatically turns off the interlocking trigger control circuit to reduce the power consumption after the equipment is powered on.
Description
Technical Field
The invention relates to the field of power-on and power-on control of electronic equipment, in particular to a low-power-consumption power-on circuit for the electronic equipment.
Background
With the increasing popularity of portable electronic devices, dry cells or lithium batteries are basically used to supplement power energy in order to meet the portable requirements. Because the energy storage of the dry battery or the lithium battery is limited, a circuit which does not need to work is turned off as much as possible in the operation process of the equipment so as to save electric energy and prolong the operation and standby time of the electronic equipment. Therefore, a technical problem to be continuously solved by technicians for reducing the standby power consumption of electronic equipment is solved.
Disclosure of Invention
The invention provides a low-power-consumption starting circuit. The starting circuit is used for enabling the relevant circuits to be out of work when the electronic equipment is powered on and in a standby state or a running state, and power consumption is reduced to prolong standby and working time of the electronic equipment.
The startup circuit provided by the invention is specifically realized as follows:
a low power boot circuit, comprising: the device comprises an interlocking trigger control circuit, a starting button circuit, an MCU and a voltage conversion circuit; when the key of the starting key circuit is closed, the interlocking trigger control circuit is triggered to work, a first enabling signal is output to trigger the voltage conversion circuit to work, and power supply to equipment connected with an output end and the MCU is realized; and after the MCU is electrified and works, a second enabling signal is sent out after a certain time delay so that the interlocking trigger control circuit stops working.
Further, the interlocking trigger control circuit comprises an NPN triode Q10, a PNP triode Q9 and resistors R5-R9. The collector of the transistor Q10 is connected with one end of a resistor R5 and the base of the transistor Q9, and the other end of the resistor R5 is connected with the emitter of the transistor Q9. The base of the triode Q10 is connected with one end of a resistor R9, one end of a resistor R7 and the emitter of the triode Q10 is connected with the other end of a resistor R9, the collector of the triode Q9 is connected with the other end of a resistor R7, and the emitter of the triode Q9 is connected with the power supply end AUX-VBAT +. The base electrode of the triode Q10 is connected with the key closing detection end STB-EN of the POWER-on key circuit through a resistor R8, the emitter electrode of the triode Q10 is connected with the enable end POWER-EN of the voltage conversion circuit, and the enable end POWER-EN is grounded through a large resistor R2. The resistances of the resistors R7, R9 and R2 are set such that when the transistor Q9 is turned on, the enable terminal POWER-EN outputs a high level signal according to the specification of the voltage conversion circuit.
The start-up key circuit comprises: KEY1, capacitor C3, and resistor R10. One end of the KEY1 is connected to the power source VCC1, the other end is used as one end of the KEY closing detection terminal STB-EN capacitor C3, and the other ends of the resistor R10 and the capacitor C3 are grounded. The other end of the resistor R10 is connected with one GPIO pin of the MCU, and the other GPIO pin of the MCU is connected with an enabling end POWER-EN of the voltage conversion circuit through a resistor R1. And the MCU is set to send out a high-level pulse signal after delaying for a certain time after the POWER-on work, so that the voltage difference between the enabling end POWER-EN and the POWER supply end AUX-VBAT + is not enough to turn on the interlocking trigger control circuit.
Drawings
Fig. 1 is a schematic circuit diagram of a low power consumption boot circuit according to the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages solved by the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The low power consumption boot circuit provided by the invention is shown in figure 1. This low-power consumption is started up and is included: the device comprises an interlocking trigger control circuit, a starting button circuit, an MCU and a voltage conversion circuit.
Wherein, the interlock trigger control circuit includes: NPN triode Q10, PNP triode Q9 and resistors R5-R9. The collector of the transistor Q10 is connected with one end of a resistor R5 and the base of the transistor Q9, and the other end of the resistor R5 is connected with the emitter of the transistor Q9. The base of the triode Q10 is connected with one end of a resistor R9, one end of a resistor R7 and the emitter of the triode Q10 is connected with the other end of a resistor R9, the collector of the triode Q9 is connected with the other end of a resistor R7, and the emitter of the triode Q9 is connected with the power supply end AUX-VBAT +. The base electrode of the triode Q10 is connected with the key closing detection end STB-EN of the POWER-on key circuit through a resistor R8, the emitter electrode of the triode Q10 is connected with the enable end POWER-EN of the voltage conversion circuit, and the enable end POWER-EN is grounded through a large resistor R2.
The start-up key circuit comprises: KEY1, capacitor C3, and resistor R10. One end of the KEY1 is connected to the power source VCC1, the other end is used as one end of the KEY closing detection terminal STB-EN capacitor C3, and the other ends of the resistor R10 and the capacitor C3 are grounded. The other end of the resistor R10 is connected with one GPIO pin of the MCU, and the other GPIO pin of the MCU is connected with an enabling end POWER-EN of the voltage conversion circuit through a resistor R1.
When the power-on KEY1 is touched lightly, the capacitor C3 starts to charge, the two terminals C3 (KEY-on detection terminal STB-EN) will generate a high signal close to VCC1, and VCC1 is generally 3.3v or 5 v. The high level signal is sent to the interlock trigger control circuit, the triode Q10 (the turn-on voltage is about 0.7V) is conducted, the triode Q9 is simultaneously conducted, the voltage division circuit formed by the conducted triode Q9 (the conduction voltage Vce is about 0.3V), the resistors R7, R9 and the large resistor R2 divides the voltage on the AUX _ VBAT +, and the skilled person can set the resistance values of the resistors R7, R9 and the large resistor R2 according to the actual requirements, so that the emitter output of the triode Q10 meets the high level signal specified by the voltage conversion circuit. And the enabling terminal POWER-EN of the voltage conversion circuit U1 starts to work after receiving the high level, and the required voltage value defined by the design is obtained to supply POWER to the equipment connected with the output terminal and the MCU. After the MCU is electrified and works, a high-level pulse signal is sent out after a certain time delay, so that the voltage difference between the enable terminal POWER-EN and the POWER supply terminal AUX-VBAT + is not enough to turn on the interlocking trigger control circuit (at the moment, the voltage-EN and the POWER supply terminal AUX-VBAT + are almost zero or negative values, and the interlocking trigger control circuit is out of a working state). At this time, even if the KEY1 KEY STB _ EN is pressed to be in a high level, the interlocking trigger control circuit does not work, and the design of multiplexing other functions by one KEY is realized.
Compared with the prior art, the low-power-consumption control circuit provided by the invention skillfully combines the interlocking trigger control circuit and the startup multiplexing KEY circuit, and realizes the multipurpose function of the KEY1 KEY while reducing the standby power consumption. The low-power-consumption control circuit and the design concept provided by the invention have certain universality and are beneficial to the miniaturization of electronic equipment.
Claims (1)
1. A low power boot circuit, comprising: the device comprises an interlocking trigger control circuit, a starting button circuit, an MCU and a voltage conversion circuit; when the key of the starting key circuit is closed, the interlocking trigger control circuit is triggered to work, a first enabling signal is output to enable the voltage conversion circuit to work, and power is supplied to equipment connected with an output end and the MCU; after the MCU is electrified and works, a second enabling signal is sent out after a certain time delay so that the interlocking trigger control circuit stops working;
the interlock trigger control circuit includes: an NPN triode Q10, a PNP triode Q9 and resistors R5-R9; wherein, the collector of the triode Q10 is connected with one end of a resistor R5, the base of the triode Q9 and the other end of the resistor R5 is connected with the emitter of the triode Q9, the base of the triode Q10 is connected with one end of a resistor R9, one end of a resistor R7 and the emitter of the resistor R5 are connected with the other end of the resistor R9; the collector of the triode Q9 is connected with the other end of the resistor R7, and the emitter of the triode Q9 is connected with the power supply end AUX-VBAT +; the base electrode of the triode Q10 is connected with a key closing detection end STB-EN of the POWER-on key circuit through a resistor R8, the emitter electrode of the triode Q10 is connected with an enabling end POWER-EN of the voltage conversion circuit, and the enabling end POWER-EN is grounded through a resistor R2; the resistances of the resistors R7, R9 and R2 are set to be that when the triode Q9 works, the enable terminal POWER-EN generates a high-level signal which meets the design specification of the voltage conversion circuit as the first enable signal;
the startup KEY circuit comprises a KEY1, a capacitor C3 and a resistor R10; one end of the key is connected with a POWER VCC1, the other end of the key is used as one end of a key closing detection end STB-EN capacitor C3 and the other ends of a resistor R10 and a capacitor C3 are grounded, the other end of the resistor R10 is connected with a GPIO pin of the MCU, and the other GPIO pin MCU-EN of the MCU is connected with an enabling end POWER-EN through a resistor R1; the MCU is set to send out a high-level pulse signal as a second enabling signal after delaying for a certain time after being electrified to work, so that the voltage difference between the enabling end POWER-EN and the POWER supply end AUX-VBAT + is not enough to turn on the interlocking trigger control circuit;
when a POWER-on KEY is lightly touched 1, a capacitor C3 starts charging, two ends of a capacitor C3 generate a high-level signal close to VCC1, the general VCC1 is 3.3v or 5v, the high-level signal is sent to an interlocking trigger control circuit, a triode Q10 is conducted, a triode Q9 is conducted, a voltage division circuit formed by the conducted triode Q9, a resistor R7, a resistor R9 and a large resistor R2 divides the voltage on AUX-VBAT +, the resistance values of the resistors R7, R9 and the large resistor R2 are set according to actual requirements, the emitter of the triode Q10 outputs the high-level signal according with the specification of a voltage conversion circuit, an enabling end POWER-EN of the voltage conversion circuit U1 starts working after receiving the high level, the required voltage value defined by design is obtained to supply POWER to the equipment connected with the output end and the MCU, and after the MCU is powered on, a high-level pulse signal is sent out after a certain time delay, so that the voltage difference between the enabling end POWER-EN and the POWER supply end VBAT-AT + is not enough to be opened When the interlocking trigger control circuit is switched on, the POWER-EN and the POWER supply end AUX-VBAT + are almost zero or negative values, and the interlocking trigger control circuit exits the working state; even if the KEY1 KEY STB _ EN is pressed to be in a high level, the interlocking trigger control circuit does not work, and the design of multiplexing other functions by one KEY is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011392860.6A CN112486072B (en) | 2020-12-02 | 2020-12-02 | Low-power-consumption starting circuit |
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| CN202011392860.6A CN112486072B (en) | 2020-12-02 | 2020-12-02 | Low-power-consumption starting circuit |
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| CN112486072A CN112486072A (en) | 2021-03-12 |
| CN112486072B true CN112486072B (en) | 2022-02-25 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477176A (en) * | 1994-06-02 | 1995-12-19 | Motorola Inc. | Power-on reset circuit for preventing multiple word line selections during power-up of an integrated circuit memory |
| CN201813355U (en) * | 2010-01-21 | 2011-04-27 | 代傲电子控制（南京）有限公司 | Single chip-based switch circuit with low stand-by power consumption |
| CN204759081U (en) * | 2015-05-14 | 2015-11-11 | 深圳市三诺数字科技有限公司 | Switching on and shutting down system |
| CN204794147U (en) * | 2015-06-03 | 2015-11-18 | 九阳股份有限公司 | Low -power consumption power control circuit |
| CN205017207U (en) * | 2015-09-25 | 2016-02-03 | Tcl通力电子（惠州）有限公司 | Switching on and shutting down control circuit and switching power supply |
| CN106292985A (en) * | 2015-05-28 | 2017-01-04 | 比亚迪股份有限公司 | The on/off circuit of Bluetooth electronic devices and Bluetooth electronic devices |
| CN209419590U (en) * | 2018-12-18 | 2019-09-20 | 深圳市全智芯科技有限公司 | A kind of super low-power consumption on/off circuit |
| CN211293696U (en) * | 2020-01-08 | 2020-08-18 | 长沙硕博电子科技股份有限公司 | Time-delay self-locking power switch circuit and control device |
-
2020
- 2020-12-02 CN CN202011392860.6A patent/CN112486072B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477176A (en) * | 1994-06-02 | 1995-12-19 | Motorola Inc. | Power-on reset circuit for preventing multiple word line selections during power-up of an integrated circuit memory |
| CN201813355U (en) * | 2010-01-21 | 2011-04-27 | 代傲电子控制（南京）有限公司 | Single chip-based switch circuit with low stand-by power consumption |
| CN204759081U (en) * | 2015-05-14 | 2015-11-11 | 深圳市三诺数字科技有限公司 | Switching on and shutting down system |
| CN106292985A (en) * | 2015-05-28 | 2017-01-04 | 比亚迪股份有限公司 | The on/off circuit of Bluetooth electronic devices and Bluetooth electronic devices |
| CN204794147U (en) * | 2015-06-03 | 2015-11-18 | 九阳股份有限公司 | Low -power consumption power control circuit |
| CN205017207U (en) * | 2015-09-25 | 2016-02-03 | Tcl通力电子（惠州）有限公司 | Switching on and shutting down control circuit and switching power supply |
| CN209419590U (en) * | 2018-12-18 | 2019-09-20 | 深圳市全智芯科技有限公司 | A kind of super low-power consumption on/off circuit |
| CN211293696U (en) * | 2020-01-08 | 2020-08-18 | 长沙硕博电子科技股份有限公司 | Time-delay self-locking power switch circuit and control device |
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Address after: 450016 No.99, Jingbei 6th Road, Zhengzhou area (Jingkai), Zhengzhou pilot Free Trade Zone, Henan Province Applicant after: Henan Jiachen Intelligent Control Co.,Ltd. Address before: 450016 No.99, Jingbei 6th Road, Zhengzhou area (Jingkai), Zhengzhou pilot Free Trade Zone, Henan Province Applicant before: ZHENGZHOU JIACHEN ELECTRIC Co.,Ltd. |
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