CN206075048U - Switching on and shutting down control circuit - Google Patents
Switching on and shutting down control circuit Download PDFInfo
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- CN206075048U CN206075048U CN201620765961.6U CN201620765961U CN206075048U CN 206075048 U CN206075048 U CN 206075048U CN 201620765961 U CN201620765961 U CN 201620765961U CN 206075048 U CN206075048 U CN 206075048U
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- electrically connected
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- switch circuit
- shutting down
- switching
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Abstract
The utility model discloses switching on and shutting down control circuit, including the switch S1, first switch circuit Q1, second switch circuit Q2, MCU processor and the battery that are electrically connected between battery charging terminal VBAT ends and load outputs PVDD ends；Wherein, VBAT ends are electrically connected with the battery, and the input/output terminal of first switch circuit Q1 is electrically connected with VBAT ends, PVDD ends respectively；One end of switch S1 is electrically connected with VBAT ends, the other end is electrically connected with by the control end of second switch circuit Q2 and first switch circuit Q1, the outfan of first switch circuit Q1 is electrically connected with the feeder ear of MCU processors, and an outfan of MCU processors is electrically connected with the control end of second switch circuit Q2.Overall structure of the present utility model is simple, stable performance, and after shutting down every time, MCU and battery-end process complete off state, is not in crash also produce power consumption.
Description
Technical field
This utility model is related to control circuit technical field, particularly switching on and shutting down control circuit.
Background technology
With the development of science and technology, portable product is more and more, and the outward appearance of product is also increasingly exquisiter,
For attractive in appearance, the control mode of many products by hard power-off of product（Such as：Toggle switch）It has been changed to Sofe Switch machine
Mode（Touch-switch or ripple son's piece）, at present product on the market directly connected using the MCU processors of high-performance low-power-consumption substantially
Power supply is connect, controlling switch electromechanics road, such mode have following two shortcomings:
1st, with certain stand-by power consumption（Typically in 100-200uA）；
2nd, deadlock phenomenon is occurred by outside ESD or the interference of circuit ripple, once crash need special reset switch
Reset, or oneself reset after waiting running down of battery.
Utility model content
The technical problems to be solved in the utility model is for above-mentioned the deficiencies in the prior art, there is provided switching on and shutting down control electricity
Road.
To solve above-mentioned technical problem, technical solution adopted in the utility model is：Switching on and shutting down control circuit, including electricity
Property is connected to the switch S1 between battery charging terminal VBAT ends and load outputs PVDD ends, first switch circuit Q1, second opens
Powered-down road Q2, MCU processor and battery；Wherein, VBAT ends are electrically connected with the battery, the input/output terminal of first switch circuit Q1
It is electrically connected with the VBAT ends, PVDD ends respectively；One end of the switch S1 is electrically connected with VBAT ends, and the other end is by the
The control end of two on-off circuit Q2 and first switch circuit Q1 is electrically connected with, outfan and the MCU process of first switch circuit Q1
The feeder ear of device is electrically connected with, and an outfan of MCU processors is electrically connected with the control end of second switch circuit Q2.
Further, from setting Unidirectional flow-limiting circuit the control end of the switch S1 to second switch circuit Q2.
In above-mentioned technical proposal, the Unidirectional flow-limiting circuit includes resistance R3 and the diode D1 for connecting.
In above-mentioned technical proposal, it is electrically connected between the input of the input and MCU processors of the diode D1
There is a resistance R6 for preventing reverse leakage current.
Further, the control end of the second switch circuit Q2 was electrically connected with by dividing that electric capacity C2 and resistance R4 are constituted
Filter pressing wave circuit.
Further, the switch S1 is switched for contact.
Further, control of the outfan of the MCU processors by the current-limiting resistance R2 and second switch circuit Q2
End processed is electrically connected with.
Further, biasing resistor R1 in parallel between the input and control end of the first switch circuit Q1.
In above-mentioned technical proposal, current-limiting resistance R5 is electrically connected between the switch S1 and MCU processor inputs.
The beneficial effects of the utility model are：Overall structure is simple, stable performance, after shutting down every time at MCU and battery-end
Complete off state is managed, is not in crash also produce power consumption.
Description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail.
As shown in figure 1, switching on and shutting down control circuit, including being electrically connected at battery charging terminal VBAT ends and load outputs
Switch S1, first switch circuit Q1, second switch circuit Q2, MCU processor and battery BAT between PVDD ends.
Specifically, VBAT ends are electrically connected with the battery, the input/output terminal of first switch circuit Q1 respectively with the VBAT
End, PVDD ends are electrically connected with；One end of the switch S1 is electrically connected with VBAT ends, and the other end for switching S1 passes through second switch
The control end electric connection of circuit Q2 and first switch circuit Q1, the outfan of first switch circuit Q1 and the confession of MCU processors
Electric end is electrically connected with, and an outfan of MCU processors is electrically connected with the control end of second switch circuit Q2.Specifically, this reality
In applying example, first switch circuit Q1 is P-channel metal-oxide-semiconductor, or other IC with enable or other switching devices.And the
Two on-off circuit Q2 are then NPN triode, carry out conducting control to first switch circuit Q1 as a NOT logic controller.
Specifically, from setting Unidirectional flow-limiting circuit the control end of the switch S1 to second switch circuit Q2.Wherein,
The Unidirectional flow-limiting circuit includes resistance R3 and the diode D1 for connecting.
Wherein, being electrically connected with one between the input of the input and MCU processors of the diode D1 prevents two
Pole pipe D1 produces the resistance R6 of reverse leakage current.
Specifically, the control end of the second switch circuit Q2 is electrically connected with the partial pressure being made up of electric capacity C2 and resistance R4
Filter circuit.ESD or capacitive circuit electric discharge interference circuit can effectively be prevented.
Specifically, the switch S1 is switched for contact.Can be touch-switch or ripple son's piece.
Specifically, control of the outfan of the MCU processors by the current-limiting resistance R2 and second switch circuit Q2
End is electrically connected with.
Specifically, biasing resistor R1 in parallel between the input and control end of the first switch circuit Q1.Resistance R1
Bias for first switch circuit Q1 pull-up.
Wherein, current-limiting resistance R5 is electrically connected between the switch S1 and MCU processor inputs.
Operation principle of the present utility model：
Off-mode：Switch S1 is normally open, and audion Q2 base stages do not have voltage in cut-off state, and metal-oxide-semiconductor Q1 exists
Cut-off state is also in the case of the pull-up that resistance R1 is provided, PVDD ends are not switched on VBAT ends, and whole machine is in off-mode；
Shutdown access switch state：When switch S1 is pressed, battery BAT gives two-way through switch：All the way Jing resistance R3,
Diode D1 is supplied to audion Q2, and now the Vbe of audion Q2 is turned on more than 0.7V, and P ditch metal-oxide-semiconductors, VGS are dragged down after conducting
More than 2.5V, metal-oxide-semiconductor Q1 is fully on, powers to MCU processors after Q1 conductings；After another road is electric on MCU, Jing is by resistance R5
The operation that MCU processors detect starting key is proposed, MCU processors send instruction by 4 foot output HIGH voltages, pin audion Q2
Conducting, whole machine process working condition；Diode D1 is one-way conduction, it is ensured that the control voltage of MCU processors output will not flow back
To input detection foot（In view of the reverse leakage current of diode D1, circuit adds resistance R6 to absorb which）；
On off state goes to off-mode：When switch S1 is pressed again, MCU processors detect button behaviour by resistance R5
Make, the output of 4 feet is dragged down, audion Q2 then loses and is biased into cut-off state, metal-oxide-semiconductor Q1 similarly enters cut-off state, whole
Electromechanical road PVDD ends are cut off, and whole machine enters off-mode；
Unlimited number of switching on and shutting down control is realized in the circulation of above-mentioned action.
Embodiment above simply indicates that rather than limits this utility model, therefore all according to this utility model patent application
Equivalence changes or modification that method described in scope is done, are included in this utility model patent claim.
Claims (9)
1. switching on and shutting down control circuit, it is characterised in that：Including being electrically connected at battery charging terminal VBAT ends and load outputs
Switch S1, first switch circuit Q1, second switch circuit Q2, MCU processor and battery between PVDD ends；Wherein, VBAT ends
It is electrically connected with the battery, the input/output terminal of first switch circuit Q1 is electrically connected with the VBAT ends, PVDD ends respectively；It is described
One end of switch S1 is electrically connected with VBAT ends, control end of the other end by second switch circuit Q2 and first switch circuit Q1
It is electrically connected with, the outfan of first switch circuit Q1 is electrically connected with the feeder ear of MCU processors, an output of MCU processors
End is electrically connected with the control end of second switch circuit Q2.
2. switching on and shutting down control circuit according to claim 1, it is characterised in that：From the switch S1 to second switch circuit
Unidirectional flow-limiting circuit is set between the control end of Q2.
3. switching on and shutting down control circuit according to claim 2, it is characterised in that：The Unidirectional flow-limiting circuit includes what is connected
Resistance R3 and diode D1.
4. switching on and shutting down control circuit according to claim 3, it is characterised in that：The diode D1 input with
A resistance R6 for preventing reverse leakage current is electrically connected between the input of MCU processors.
5. switching on and shutting down control circuit according to claim 1, it is characterised in that：The control end of the second switch circuit Q2
It is electrically connected with the pressure filter circuit being made up of electric capacity C2 and resistance R4.
6. switching on and shutting down control circuit according to claim 1, it is characterised in that：The switch S1 is switched for contact.
7. switching on and shutting down control circuit according to claim 1, it is characterised in that：The outfan of the MCU processors passes through
The control end of the current-limiting resistance R2 and second switch circuit Q2 is electrically connected with.
8. switching on and shutting down control circuit according to claim 1, it is characterised in that：The input of the first switch circuit Q1
The biasing resistor R1 in parallel between control end.
9. switching on and shutting down control circuit according to claim 1, it is characterised in that：In the switch S1 and MCU processors
Current-limiting resistance R5 is electrically connected between input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620765961.6U CN206075048U (en) | 2016-07-21 | 2016-07-21 | Switching on and shutting down control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620765961.6U CN206075048U (en) | 2016-07-21 | 2016-07-21 | Switching on and shutting down control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206075048U true CN206075048U (en) | 2017-04-05 |
Family
ID=58425973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620765961.6U Active CN206075048U (en) | 2016-07-21 | 2016-07-21 | Switching on and shutting down control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206075048U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108052041A (en) * | 2017-12-20 | 2018-05-18 | 威创集团股份有限公司 | Remote on-off control device and system |
| CN108969338A (en) * | 2018-06-07 | 2018-12-11 | 北京大学深圳医院 | External chest compression guidance device for cardiopulmonary resuscitation |
| CN106959726B (en) * | 2017-04-21 | 2019-01-11 | 深圳市瀚索科技开发有限公司 | A kind of on/off circuit based on touch-switch |
-
2016
- 2016-07-21 CN CN201620765961.6U patent/CN206075048U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106959726B (en) * | 2017-04-21 | 2019-01-11 | 深圳市瀚索科技开发有限公司 | A kind of on/off circuit based on touch-switch |
| CN108052041A (en) * | 2017-12-20 | 2018-05-18 | 威创集团股份有限公司 | Remote on-off control device and system |
| CN108969338A (en) * | 2018-06-07 | 2018-12-11 | 北京大学深圳医院 | External chest compression guidance device for cardiopulmonary resuscitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Singlechip timing switch-on and switch-off and remote controller switch-on and switch-off control circuit Effective date of registration: 20180202 Granted publication date: 20170405 Pledgee: China Co truction Bank Corp Dongguan branch Pledgor: Dongguan Zhengyang Electronics Co., Ltd. Registration number: 2018440000031 |