CN206820730U - A kind of controllable automatic shutdown circuitry of low-power consumption - Google Patents
A kind of controllable automatic shutdown circuitry of low-power consumption Download PDFInfo
- Publication number
- CN206820730U CN206820730U CN201720419424.0U CN201720419424U CN206820730U CN 206820730 U CN206820730 U CN 206820730U CN 201720419424 U CN201720419424 U CN 201720419424U CN 206820730 U CN206820730 U CN 206820730U
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- Prior art keywords
- switch pipe
- switch
- resistor
- resistance
- power consumption
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- 239000003990 capacitor Substances 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 4
- 238000004134 energy conservation Methods 0.000 abstract description 2
- 238000011144 upstream manufacturing Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a kind of controllable automatic shutdown circuitry of low-power consumption, including electric capacity delay switch circuit, battery, battery is connected with switch key by first resistor, delay switch circuit includes first switch pipe and second switch pipe, second switch tube grid connects voltage pulse input port, and it is connected after second resistance in parallel with switch key, second switch pipe drain electrode connection 3rd resistor and first switch tube grid, 3rd resistor is in parallel with first switch pipe, 3rd resistor is connected by the 4th resistance with first switch pipe source electrode, and the drain electrode of first switch pipe is connected with the voltage output port of battery；4th resistance is also parallel with charging capacitor；Voltage output port is also associated with filter circuit of pressure-stabilizing.The utility model is connected by voltage pulse output port and is connected with the downstream electrical equipment MCU GPIO ports provided, implements to send pulse by downstream electrical equipment MCU, to realize that upstream device is powered on demand, accomplishes the purpose of maximum energy-conservation.
Description
Technical field
It the utility model is related to electronic equipment Low-power Technology field, and in particular to a kind of controllable automatic shutdown electricity of low-power consumption
Road.
Background technology
Existing electronic equipment causes the cruising time of battery to shorten, is highly detrimental to use because quiescent dissipation is leaked electricity
Battery works long hours as the electronic equipment of power supply.
Utility model content
The purpose of this utility model is to reduce battery drain rate, improves user equipment cruising time.
To achieve these goals, the utility model provides a kind of controllable automatic shutdown of low-power consumption, including electric capacity delay
On-off circuit, battery, battery are connected with switch key by first resistor, electric capacity delay switch circuit include first switch pipe and
Second switch pipe, second switch tube grid connection voltage pulse input port, and be connected after second resistance in parallel with switch key,
Second switch pipe drain electrode connection 3rd resistor and first switch tube grid, 3rd resistor is in parallel with first switch pipe, 3rd resistor
It is connected by the 4th resistance with first switch pipe source electrode, and the drain electrode of first switch pipe is connected with the voltage output port of battery；The
Four resistance are also parallel with charging capacitor；Voltage output port is also associated with filter circuit of pressure-stabilizing.
Further, filter circuit of pressure-stabilizing includes the first electric capacity (C11) and the second electric capacity (C10) in parallel.
Further, first switch pipe is P-channel metal-oxide-semiconductor.
Further, second switch pipe is N-channel MOS pipe.
In the above-mentioned technical solutions, the utility model passes through the connection of voltage pulse input port and downstream electrical equipment MCU
The GPIO port connection of offer, implement to send pulse by downstream electrical equipment MCU, upstream device is supplied on demand to realize
Electricity, it will not in advance shut down or postpone for a long time to shut down again, accomplish the purpose of maximum energy-conservation.
Brief description of the drawings
, below will be to institute in embodiment in order to illustrate more clearly of the embodiment of the present application or technical scheme of the prior art
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only described in the utility model
Some embodiments, for those of ordinary skill in the art, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit diagram of the controllable automatic shutdown circuitry of low-power consumption described in the utility model.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with accompanying drawing pair
The utility model is further detailed.
As shown in figure 1, the utility model provides a kind of controllable automatic shutdown circuitry of low-power consumption, including electric capacity delay switch
Circuit, battery, battery (B1) are connected with switch key (S) by first resistor (R9),
Electric capacity delay switch circuit includes first switch pipe (Q1) and second switch pipe (Q2), second switch pipe (Q2) grid
Voltage pulse input port (PD3) is connected, and second resistance in parallel (R12) is connected with switch key (S) afterwards, second switch pipe
(Q2) drain electrode connection 3rd resistor (R11) and first switch pipe (Q1) grid, 3rd resistor (R11) and first switch pipe (Q1) are simultaneously
Connection, 3rd resistor (R11) are connected by the 4th resistance (R10) with first switch pipe (Q1) source electrode, and first switch pipe (Q1) leaks
Pole and the voltage output port of battery connect；4th resistance (R10) is also parallel with charging capacitor (C3)；
Voltage output port is also associated with filter circuit of pressure-stabilizing.
In the present embodiment, first switch pipe is P-channel metal-oxide-semiconductor, and second switch pipe is N-channel MOS pipe.
Operation principle：When switch key is not pressed, first switch pipe and second switch pipe are in cut-off state and (not led
Logical state), the not external output voltage in voltage output port.When switch key is pressed, R9 access circuits and second switch pipe
(Q2) turn on, while C3 is charged by current-limiting resistance R11 and second switch pipe (Q2), now the grid of first switch pipe (Q1) because
Turned on for second switch pipe (Q2), its drain potential can be pulled low to zero potential, and first switch pipe meets turn-on condition Vgs<Vth
<0, first switch pipe (Q1) turns on, and voltage output port 3V3 has power supply to export in the present embodiment, i.e., output voltage is 3.3V, tool
Output voltage can expand to other voltage ranges as needed when body is implemented, and the utility model is herein without limiting.Voltage
After output port power supply output, downstream electrical equipment is started working.After S1 is switched off, second switch pipe (Q2) disconnects, but
Because C3 had filled electricity before this, before C3 is discharged to Vth (conduction threshold) current potential by R10, the grid of first switch pipe (Q1)
Also continue to keep negative voltage between pole and source electrode, continue to meet P pipe turn-on conditions Vgs<Vth<0, first switch pipe (Q1) continues
Conducting.Due to first switch pipe (Q1) conducting, downstream electrical equipment has worked, and the MCU of down-stream system can pass through it
GPIO port connects with pulse input port PD3, sends high level pulse on demand by the MCU in downstream, sends the cycle of pulse
Discharge time constant not less than C3, continue to control the conducting of second switch pipe (Q2), passed through periodically by second switch pipe
To C3 charge, when C3 is charged to it is identical with cell voltage when stop charging, meanwhile, C3 is discharged by R10, is put in C3 by R10
Before electricity to Vth (conduction threshold) current potential, also continue to keep negative voltage between the grid and source electrode of first switch pipe (Q1), continue full
Sufficient P pipes turn-on condition Vgs<Vth<0, first switch pipe (Q1) continues to turn on, and the time being held on by C3 capacity and put
Resistance R10 resistance determines.Because R10 is connected in parallel on C3, therefore, if button switch S1 for a long time not by by
Under, or PD3, without the triggering for periodically obtaining high level pulse, C3 voltage is discharged into first switch pipe Q1 by R10
Conduction threshold below after, Q1 grid recovers high level, and Q1 cut-offs, voltage output port stops external output voltage, downstream
Electricity system powers off.
Because the switch element being related in electric capacity delay switch circuit described in the utility model is all high insulaion resistance, because
This is originally the controllable automatic shutdown circuitry of low-power consumption described in utility model almost leakproof, and leakage current is only 10 nas, and is passed
The electric leakage of the shutdown circuit of system is generally hundreds of or thousands of microamperes, therefore the utility model greatly reduces electrical leakage quantity,
Realizing reduces the purpose of power consumption.Therefore same battery capacity, using traditional shutdown circuit cruising time as being ten days left sides
It is right, then using the battery of the controllable automatic shutdown circuitry of low-power consumption described in the utility model, then cruising time can reach 1 year
It is even more long.
Further, filter circuit of pressure-stabilizing includes the first electric capacity (C11) and the second electric capacity (C10) in parallel.It is defeated in order to improve
The stability of voltage when going out voltage, ensures the normal use of electrical equipment device part, and the utility model is protected by the electric capacity of parallel connection
Stability when having demonstrate,proved unexpected battery loose contact during output voltage, improve the service life of electrical equipment.
When it is implemented, all equipment using the controllable shutdown circuit of low-power consumption described in the utility model are this practicalities
New protection domain, such as apply on Intelligent bracelet, mobile phone, notebook electronic equipment, the utility model no longer arranges one by one
Lift.
Some one exemplary embodiments of the present utility model are only described by way of explanation above, undoubtedly, for
One of ordinary skill in the art, can be with a variety of in the case of without departing from spirit and scope of the present utility model
Mode is modified to described embodiment.Therefore, above-mentioned accompanying drawing and description are inherently illustrative, should not be construed as
Limitation to the utility model claims protection domain.
Claims (4)
1. a kind of controllable automatic shutdown circuitry of low-power consumption, it is characterised in that including electric capacity delay switch circuit, battery, battery leads to
Cross first resistor (R9) and be connected with switch key (S1),
Electric capacity delay switch circuit includes first switch pipe (Q1) and second switch pipe (Q2), the connection of second switch pipe (Q2) grid
Voltage pulse input port (PD3), and second resistance in parallel (R12) is connected with switch key (S) afterwards, second switch pipe (Q2) leakage
Pole connects 3rd resistor (R11) and first switch pipe (Q1) grid, and 3rd resistor (R11) is in parallel with first switch pipe (Q1), the
Three resistance (R11) are connected by the 4th resistance (R10) with first switch pipe (Q1) source electrode, and first switch pipe (Q1) drain electrode and electricity
The voltage output port connection in pond；4th resistance (R10) is also parallel with charging capacitor (C3)；
Voltage output port is also associated with filter circuit of pressure-stabilizing.
2. the controllable automatic shutdown circuitry of low-power consumption according to claim 1, it is characterised in that filter circuit of pressure-stabilizing is included simultaneously
The first electric capacity (C11) and the second electric capacity (C10) of connection.
3. the controllable automatic shutdown circuitry of low-power consumption according to claim 1, it is characterised in that first switch pipe is P-channel
Metal-oxide-semiconductor.
4. the controllable automatic shutdown circuitry of low-power consumption according to claim 1, it is characterised in that second switch pipe is N-channel
Metal-oxide-semiconductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720419424.0U CN206820730U (en) | 2017-04-20 | 2017-04-20 | A kind of controllable automatic shutdown circuitry of low-power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720419424.0U CN206820730U (en) | 2017-04-20 | 2017-04-20 | A kind of controllable automatic shutdown circuitry of low-power consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206820730U true CN206820730U (en) | 2017-12-29 |
Family
ID=60753638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720419424.0U Expired - Fee Related CN206820730U (en) | 2017-04-20 | 2017-04-20 | A kind of controllable automatic shutdown circuitry of low-power consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206820730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540115A (en) * | 2018-05-31 | 2018-09-14 | 深圳市文鼎创数据科技有限公司 | A kind of low consumption circuit and electronic device |
| CN112448706A (en) * | 2019-08-30 | 2021-03-05 | 上海铁路通信有限公司 | One-key multi-energy switch control circuit for portable electronic equipment |
-
2017
- 2017-04-20 CN CN201720419424.0U patent/CN206820730U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108540115A (en) * | 2018-05-31 | 2018-09-14 | 深圳市文鼎创数据科技有限公司 | A kind of low consumption circuit and electronic device |
| CN112448706A (en) * | 2019-08-30 | 2021-03-05 | 上海铁路通信有限公司 | One-key multi-energy switch control circuit for portable electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171229 Termination date: 20180420 |