CN107707231A - shutdown control circuit and terminal - Google Patents
shutdown control circuit and terminal Download PDFInfo
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- CN107707231A CN107707231A CN201710883720.0A CN201710883720A CN107707231A CN 107707231 A CN107707231 A CN 107707231A CN 201710883720 A CN201710883720 A CN 201710883720A CN 107707231 A CN107707231 A CN 107707231A
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- resistance
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- enable pin
- control
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/28—Modifications for introducing a time delay before switching
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0036—Means reducing energy consumption
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Abstract
The disclosure is directed to a kind of shutdown control circuit and terminal.The shutdown control circuit includes power module, control module and switch modular converter, and switch modular converter includes power switch；The first end ground connection of modular converter is switched, the second end of modular converter is switched and the control terminal of control module connects；The feeder ear of power module and the power end of control module connect；First Enable Pin of power module connects with the second Enable Pin of control module；Control module is used in normal work, control the second Enable Pin output low level；Power module is used for when the first Enable Pin is low level, and control feeder ear stops exporting supply current to control module.In the technical scheme, using shutdown control circuit control control module power-off, it can make it that the shutdown process used time of the terminal is shorter, and control module is stopped after shutdown so that terminal does not produce power consumption after shutdown, improves the endurance of power module.
Description
Technical field
This disclosure relates to terminal control technical field, more particularly to a kind of shutdown control circuit and terminal.
Background technology
With the development of science and technology, increasing electronic equipment enters our life, for example, mobile phone, tablet personal computer,
Intelligent watch etc., these electronic equipments can not only provide diversified amusement, also our life of great convenience.
In correlation technique, in order to improve the experience of user, software switch is generally selected when being turned on and off electronic equipment
Machine scheme, i.e., in electronic equipment normal work, if user needs to shut down, power key, MCU can be clicked on
(Microcontroller Unit, micro-control unit) plays shutdown animation when detecting that this time is clicked on, and treats that system software is closed
After closing, MCU is in low power operating state, and whether monitoring power key is again tapped in real time；If detect power key again
It is secondary to be clicked, illustrate that user needs to start shooting, now MCU plays boot animation, and it is standby to treat that system software is shown after starting completely
Picture, user can normal uses.
It follows that the switching on and shutting down process that system software participates in, when electronic equipment shuts down, MCU does not realize real
Shutdown in meaning, but cause the power consumption of electronic equipment in the power-offstate larger in low power run all the time, have impact on electricity
The endurance of sub- equipment.
The content of the invention
The problem of to overcome the power consumption of electronic equipment present in correlation technique in the power-offstate larger, the disclosure are implemented
Example provides a kind of shutdown control circuit and terminal.The technical scheme is as follows：
According to the first aspect of the embodiment of the present disclosure, there is provided a kind of shutdown control circuit, the shutdown control circuit include
Power module, control module and switch modular converter, the switch modular converter include power switch；
The first end ground connection of the switch modular converter, the second end of the switch modular converter and the control module
Control terminal connects；The feeder ear of the power module is connected with the power end of the control module；The first of the power module
Enable Pin connects with the second Enable Pin of the control module；
The control module is used in normal work, if detecting the switch modular converter by the control terminal
Power switch closes and closure duration is more than or equal to the first preset duration, controls the second Enable Pin output low level, makes
The first Enable Pin for obtaining the power module being connected with second Enable Pin is low level；
The power module is used for when first Enable Pin is low level, controls the feeder ear to stop to the control
Molding block exports supply current.
The technical scheme provided by this disclosed embodiment can include the following benefits：In terminal normal work, if
User needs terminal closedown, can press power switch, and now control module controls the second Enable Pin to be exported to the first Enable Pin
Low level, power module are stopped power supply when detecting that the first Enable Pin is low level, you can so that control module power-off shutdown.
It follows that using the control control module power-off of above-mentioned shutdown control circuit, can cause shutdown process used time of the terminal compared with
It is short, and control module is stopped after shutdown so that terminal does not produce power consumption after shutdown, improves the continuation of the journey energy of power module
Power.
In one embodiment, the 3rd end the first Enable Pin with the power module respectively of the switch modular converter
Connected with the second Enable Pin of the control module；
The switch modular converter is used to detect the power switch closure and close duration more than or equal to second
During preset duration, the three-polar output high level of the switch modular converter is controlled so that the first of the power module is enabled
Hold as high level；
The power module is used for when first Enable Pin is high level, controls the feeder ear to the control mould
Block exports supply current；
The control module is for after the supply current is received by the power end, working on power and controlling institute
State the second Enable Pin output high level so that the power module first after the power switch of the switch modular converter is opened
Enable Pin persistently maintains high level.
The technical scheme provided by this disclosed embodiment can include the following benefits：User is needing starting up of terminal
When, power switch can be pressed so that the second Enable Pin of control module and the first Enable Pin of power module form self-locking and patrolled
Volume, ensure that the first Enable Pin persistently maintains high level, now power module continues to power to control module, and control module continues work
Make, user's normal use terminal.It follows that the control module is controlled to work on power using above-mentioned shutdown control circuit, you can
Control uses the starting up of terminal of the control module so that the start process used time of the terminal is shorter, and power consumption is smaller, improves power supply
The endurance of module.
In one embodiment, the shutdown control circuit also includes time-delay reset module；
The input control terminal of the time-delay reset module and the three-terminal link of the switch modular converter；The delay is multiple
The position output control terminal of module is connected with the first Enable Pin of the power module；
The time-delay reset module is used to support continuous output high level in detect the switch modular converter the 3rd
When duration is more than or equal to three preset durations, the output control terminal output low level is controlled so that the power module
First Enable Pin is low level.
The technical scheme provided by this disclosed embodiment can include the following benefits：If need time control of shutting down in user
Molding block crashes, then user can be with long-press power switch, and now time-delay reset module can export low electricity by output control terminal
Put down to drag down the level of the first Enable Pin of power module so that power module is stopped power supply, and control module can power-off shutdown.
It follows that the shutdown in the case of control module deadlock can be realized using above-mentioned shutdown control circuit, avoid due to nothing
Power consumption caused by method shutdown is larger, improves the endurance of power module.
In one embodiment, the time-delay reset module includes comparing unit and output unit, the comparing unit
Output end is connected with the input of the output unit, and the output unit includes the output control terminal；
The comparing unit is used for the duration that continuous output high level is supported in detect the switch modular converter the 3rd
During more than or equal to three preset durations, the output end output high level is controlled；
The output unit is used for when it is high level to detect the input being connected with the output end of the comparing unit,
Control the output control terminal output low level.
In one embodiment, the comparing unit includes comparator, first resistor, second resistance, 3rd resistor, first
Diode and the first electric capacity；
The electrode input end of the comparator is connected with the first end of the first resistor, the second end of the first resistor
With the three-terminal link of the switch modular converter；The positive pole of the electrode input end of the comparator and first diode connects
Connect, the three-terminal link of the negative pole of first diode and the switch modular converter；The electrode input end of the comparator
It is connected with the first end of first electric capacity, the second end ground connection of first electric capacity；
The negative input of the comparator is connected with the first end of the second resistance, the second end of the second resistance
Connect the first fixed level；The negative input of the comparator is connected with the first end of the 3rd resistor, the 3rd electricity
The second end ground connection of resistance；
The positive pole control terminal of the comparator connects the second fixed level, the negative pole control terminal ground connection of the comparator；
The output end of the comparator is connected as the output end of the comparing unit with the input of the output unit.
In one embodiment, the output unit includes MOSFET, the 4th resistance, the 5th resistance, the 6th resistance and the
Two electric capacity；
The grid of the MOSFET is connected with the first end of the 4th resistance, the second end of the 4th resistance with it is described
The output end connection of comparing unit；The grid of the MOSFET is connected with the first end of the 5th resistance, the 5th resistance
The second end ground connection；The first end of 6th resistance is connected with the second end of the 4th resistance, and the of the 6th resistance
Two ends are grounded；The first end of second electric capacity is connected with the second end of the 4th resistance, the second end of second electric capacity
Ground connection；
The source ground of the MOSFET, the output control terminal to drain as the time-delay reset module of the MOSFET
It is connected with the first Enable Pin of the power module.
In one embodiment, the output unit includes the second diode；
The positive pole of second diode is connected with the source electrode of the MOSFET, the negative pole of second diode with it is described
The drain electrode connection of MOSFET.
In one embodiment, the switch modular converter also includes triode, the 7th resistance, the 8th resistance and the 3rd electricity
Hold；
The base stage of the triode is connected with the first end of the power switch, the second end ground connection of the power switch；
The base stage of the triode is connected with the first end of the 3rd electric capacity, the second end ground connection of the 3rd electric capacity；Three pole
The base stage of pipe is connected with the first end of the 7th resistance, and the second end of the 7th resistance connects the 3rd fixed level；It is described
The base stage of triode is connected as the second end of the switch modular converter with the control terminal of the control module；
The colelctor electrode of the triode is connected with the first end of the 8th resistance, the second termination of the 8th resistance
Ground；The 3rd end of the switch modular converter is enabled with the first of the power module respectively carried out by the colelctor electrode of the triode
End connects with the second Enable Pin of the control module；
The emitter stage of the triode connects the 3rd fixed level.
In one embodiment, the shutdown control circuit also includes external charging module；
3rd Enable Pin of the external charging module is connected with the first Enable Pin of the power module；
The external charging module is used to control the 3rd Enable Pin output high level when connecting external power source so that
First Enable Pin of the power module is high level.
The technical scheme provided by this disclosed embodiment can include the following benefits：After terminal closedown, user
Can be directly by terminal grafting external power source, now the 3rd Enable Pin of external charging module draws high the first enabled of power module
The level at end so that power module is powered to control module, is realized control module and is worked on power automatically, i.e., using the control mould
The scheme of the terminal Auto Power On of block, improves Consumer's Experience.
In one embodiment, the shutdown control circuit also includes the 3rd diode, the 4th diode, the five or two pole
Pipe, the 9th resistance, the tenth resistance and the 11st resistance；
The three-terminal link of the positive pole of 3rd diode and the switch modular converter, the 3rd diode are born
Pole is connected with the first end of the 9th resistance；Second end of the 9th resistance connects with the first Enable Pin of the power module
Connect, the second end of the 9th resistance is connected with the first end of the tenth resistance, the second end of the 9th resistance with it is described
The output control terminal connection of time-delay reset module；Second end of the tenth resistance is connected with the negative pole of the 4th diode,
The positive pole of 4th diode is connected with the second Enable Pin of the control module；The first end of 11st resistance and institute
The first end connection of the tenth resistance is stated, the second end of the 11st resistance is connected with the negative pole of the 5th diode；It is described
The positive pole of 5th diode and the 3rd Enable Pin of the connection external charging module connect.
According to the second aspect of the embodiment of the present disclosure, there is provided a kind of terminal, the terminal include any implementation of first aspect
Shutdown control circuit described in example.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The disclosure can be limited.
Brief description of the drawings
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the disclosure
Example, and be used to together with specification to explain the principle of the disclosure.
Fig. 1 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Fig. 2 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Fig. 3 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Fig. 4 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Fig. 5 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Fig. 6 is the simulation curve figure according to an exemplary embodiment.
Fig. 7 is the simulation curve figure according to an exemplary embodiment.
Fig. 8 is the simulation curve figure according to an exemplary embodiment.
Fig. 9 is the circuit diagram of the shutdown control circuit according to an exemplary embodiment.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the disclosure.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the disclosure.
The embodiment of the present disclosure provides a kind of shutdown control circuit 10, and the shutdown control circuit 10 can apply to any one
Using self-powered to CPU (Central Process Unit, central processing unit), or the terminal of MCU power supplies.
As shown in figure 1, shutdown control circuit 10 includes power module 101, control module 102 and switch modular converter 103,
The switch modular converter 103 includes power switch 1031.
Wherein, the first end 1032 for switching modular converter 103 is grounded, the second end 1033 and the control of switch modular converter 103
The control terminal 1023 of molding block 102 connects；The feeder ear 1012 of power module 101 connects with the power end 1022 of control module 102
Connect；First Enable Pin 1011 of power module 101 and the second Enable Pin 1021 of control module 102 connect.
Control module 102 is used in normal work, if detecting the electricity of switch modular converter 103 by control terminal 1023
When source switch 1031 closes and closes duration and be more than or equal to the first preset duration, the second Enable Pin 1021 of control exports low electricity
It is flat, and then cause the first Enable Pin 1011 of power module 101 down for low level.
Power module 101 is used for when the first Enable Pin 1011 is low level, and control feeder ear 1012 stops to control mould
Block 102 exports supply current.
Example, control module 102 can pass through the power switch of the detection switch modular converter 103 of control terminal 1023 in real time
Whether 1031 close, and when control module 102 detects that power switch 1031 closes, records the closure of the power switch 1031
Duration, if the closure duration is more than or equal to the first preset duration, the second Enable Pin 1021 is controlled to export low level.
,, can if user needs terminal closedown in terminal normal work in the technical scheme provided by this disclosed embodiment
To press power switch 1031, now control module 102 controls the second Enable Pin 1021 to export low electricity to the first Enable Pin 1011
Flat, power module 103 is stopped power supply when detecting that the first Enable Pin 1011 is low level, you can so that control module 102 is disconnected
Electricity shutdown.It follows that being powered off using above-mentioned shutdown control circuit 10 control control module 102, the pass of the terminal can be caused
The machine process used time is shorter, and control module 102 is stopped after shutdown so that terminal does not produce power consumption after shutdown, improves electricity
The endurance of source module.
In one embodiment, as shown in Fig. 2 switch modular converter 103 the 3rd end 1034 respectively with power module 101
The first Enable Pin 1011 and the second Enable Pin 1021 of control module 102 connect；
Switch modular converter 103 be used for detect power switch 1031 close and close duration be more than or equal to it is second pre-
If during duration, the 3rd end 1034 output high level of controlling switch modular converter 103, due to the 3rd end 1034 and power module
101 the first Enable Pin 1011 connects, hence in so that the first Enable Pin 1011 of power module 101 is drawn high as high level.
Example, switch modular converter 103 can monitor whether power switch 1031 closes in real time, and detect power supply
Record closure duration during the closure of switch 1031, when the closure duration of record is more than or equal to the second preset duration, control this
Three ends 1034 export high level.
Power module 101 is used for when the first Enable Pin 1011 is high level, controls feeder ear 1012 to control module 102
Export supply current.
Control module 102 makes for after supply current is received by power end 1022, working on power and controlling second
Energy end 1021 exports high level, and now the second Enable Pin 1021 and the first Enable Pin 1011 form self-locking logic so that first makes
Energy end 1011 can continue to maintain high level, and then cause the power supply after the opening of power switch 1031 of switch modular converter 103
Module 101 continues to power to control module 102.
Example, the control module 102 can be CPU, or MCU, the embodiment of the present disclosure are not construed as limiting to this.
In practical application, the first preset duration can be the same or different with the second preset duration, example, and first is pre-
If duration and the second preset duration can be 2s (second), the embodiment of the present disclosure is not construed as limiting to this.
In the technical scheme provided by this disclosed embodiment, user can press power switch when needing starting up of terminal
1031 so that the second Enable Pin 1021 of control module 102 and the first Enable Pin 1011 of power module 101 form self-locking and patrolled
Volume, ensure that the first Enable Pin 1011 persistently maintains high level, now power module 101 continues to power to control module 102, controls
The continuous firing of module 102, user's normal use terminal.It follows that the control mould is controlled using above-mentioned shutdown control circuit 10
Block 102 works on power, you can control using the control module 102 starting up of terminal so that the start process used time of the terminal compared with
Short, power consumption is smaller, improves the endurance of power module 101.
In one embodiment, as shown in figure 3, shutdown control circuit 10 also includes time-delay reset module 104.
The input control terminal 1041 of time-delay reset module 104 is connected with switching the 3rd end 1034 of modular converter 103；Delay
The output control terminal 1042 of reseting module 104 is connected with the first Enable Pin 1011 of power module 101.
Time-delay reset module 104 is used to persistently export high level at the 3rd end 1034 for detecting switch modular converter 103
Duration when being more than or equal to three preset durations, control output control terminal 1042 exports low level, and then causes power module
101 the first Enable Pin 1011 is low level.
Power module 101 can control feeder ear 1012 to stop to control mould when the first Enable Pin 1011 is low level
Block 102 exports supply current, and then causes the power-off shutdown of control module 102.
Example, it is assumed that control module 102 is MCU, and during normal use, MCU is likely to occur the situation for the machine of delaying.
If using the scheme of software control switch machine, due to MCU machine of delaying, system software can not normal operation shutdown programm, therefore
User can not be shut down, and Consumer's Experience is relatively low.According to above-mentioned shutdown control circuit, in the case of MCU machine of delaying, user
Power switch 1031 can be pressed and continue the 3rd preset duration, such as the 3rd preset duration can be 10s.Time-delay reset module
104 can detect the level for the input control terminal 1041 being connected with switching the 3rd end 1034 of modular converter 103 in real time, if detection
It is high level to input control terminal 1041, then illustrates that power switch 1031 closes, now time-delay reset module 104 can record defeated
Enter the closure duration of the duration that control terminal 1041 is high level, the i.e. closure of power switch 1031, and it is big in the duration
When three preset durations, control output control terminal 1042 exports low level.Due to control output control terminal 1042 with
First Enable Pin 1011 of power module 101 connects, therefore can drag down the level of the first Enable Pin 1011.If the first Enable Pin
1011 are changed into low level, then power module 101 stops powering to control module 102, and it is right in the case of MCU machine of delaying to realize
MCU power-off, that is, realize the scheme shut down in the case of MCU machine of delaying to the terminal using the MCU.Practical application
In, the 3rd preset duration can be more than a preset duration larger in the second preset duration and the first preset duration.
In the technical scheme provided by this disclosed embodiment, when user needs shutdown, control module 102 crashes, then user
Can be with long-press power switch 1031, now time-delay reset module 104 can export low level to draw by output control terminal 1041
The level of first Enable Pin 1011 of low power module 101 so that power module 101 is stopped power supply, and control module 102 can break
Electricity shutdown.It follows that the shutdown in the case of the deadlock of control module 102 can be realized using above-mentioned shutdown control circuit 10,
It is larger to avoid the power consumption due to it can not shut down caused by, improves the endurance of power module 101.
In one embodiment, as Fig. 4 shows, time-delay reset module 104 includes comparing unit 1043 and output unit 1044,
The output end 1043a of comparing unit 1043 is connected with the input 1044a of output unit 1044, and output unit 1044 includes output
Control terminal 1041, comparing unit 1043 include input control terminal 1042.
Comparing unit 1043 be used for detect switch modular converter 103 the 3rd end 1034 persistently export high level when
When length is more than or equal to three preset durations, control output end 1043a output high level.Output unit 1044 is used to detect
When the input 1044a being connected with the output end 1043a of comparing unit 1043 is high level, control output control terminal 1041 exports
Low level.
In one embodiment, as shown in figure 5, comparing unit 1043 includes comparator 1043b, first resistor 1043c, the
Two resistance 1043d, 3rd resistor 1043e, the first diode 1043f and the first electric capacity 1043g.
Comparator 1043b electrode input end is connected with first resistor 1043c first end, and the of first resistor 1043c
Two ends are connected with switching the 3rd end 1034 of modular converter 103；Comparator 1043b electrode input end and the first diode
1043f positive pole connection, the first diode 1043f negative pole are connected with switching the 3rd end 1034 of modular converter 103；Comparator
1043b electrode input end is connected with the first electric capacity 1043g first end, the first electric capacity 1043g the second end ground connection.Comparator
1043b negative input is connected with second resistance 1043d first end, and second resistance 1043d the second end connection first is solid
Determine level LDO_1；Comparator 1043b negative input is connected with 3rd resistor 1043e first end, 3rd resistor 1043e
The second end ground connection.Comparator 1043b positive pole control terminal connects the second fixed level LDO_2, comparator 1043b negative pole control
End ground connection processed.Comparator 1043b output end is as the output end 1043a of comparing unit 1043 and the input of output unit 1044
Hold 1044a connections.
Example, illustrated so that control module 102 is MCU as an example, in MCU normal works due to the second Enable Pin
1021 and first Enable Pin 1011 self-locking logic so that power switch 1031 is in open mode, now switchs modular converter
103 the 3rd end 1034 output low level, because comparator 1043b electrode input end is opened by first resistor 1043c with this
The 3rd end 1034 for closing modular converter 103 connects, therefore comparator 1043b electrode input end is low level.And comparator
1043b negative input is connected by second resistance 1043d with the first fixed level LDO_1, can be by practical application
One fixed level LDO_1 is arranged to high level, therefore the level that comparator 1043b negative input is is more than electrode input end
Level, now comparator 1043b output end as comparing unit 1043 output end 1043a export low level.
In the case where MCU delays machine, user can press power switch 1031 and continue the 3rd preset duration, pre- the 3rd
If the 3rd end 1034 of switch modular converter 103 persistently exports high level in duration, the 3rd end 1034 of modular converter 103 is switched
Simulation curve can with as shown in fig. 6, as seen from Figure 6, in the 3rd preset duration t, the 3rd of switch modular converter 103 the
End 1034 exports high level all the time.Switch modular converter 103 the 3rd end 1034 output high level during with comparator
First electric capacity 1043g of 1043b electrode input end connection is started to charge up, and the level of comparator 1043b electrode input end is slow
Slow rise, the simulation curve of comparator 1043b electrode input end can be with as shown in fig. 7, as shown in Figure 7, in the first electric capacity
During 1043g charges, i.e., the level of comparator 1043b electrode input end slowly raises in the 3rd preset duration t.If
Suitable first fixed level LDO_1 is put, can be caused after the first electric capacity 1043g charges a period of time, comparator 1043b
Electrode input end level more than comparator 1043b negative input level, it is assumed that comparator 1043b negative pole input
The level at end is 2.45V (volt), with reference to figure 7 understand, the first electric capacity 1043g charge to first end level be more than 2.45V it
Afterwards, i.e., the O points in Fig. 7 start, and the level of comparator 1043b electrode input end is more than comparator 1043b negative input
Level, now comparator 1043b output end as comparing unit 1043 output end 1043a export high level so that with
The input 1044a of the output unit 1044 of the output end 1043a connections of comparing unit 1043 is high level, comparator 1043b
The simulation curve of output end can be with as shown in figure 8, as shown in Figure 8, when the level of comparator 1043b electrode input end is more than
During the level of electrode input end, i.e., after the first electric capacity 1043g charges to the O points in Fig. 7, comparator 1043b output end is opened
Begin output high level.When it is high level to detect input 1044a, control output control terminal 1041 exports output unit 1044
Low level, the level of the first Enable Pin 1011 for dragging down power module 101 so that power module 101 is stopped power supply, control
Module 102 can power-off shutdown.
Example, first resistor 1043c resistance value can be 1M Ω (megaohm), and second resistance 1043d resistance values can be with
For 15K Ω (kilo-ohm), 3rd resistor 1043e resistance value can be that 15K Ω, the first electric capacity 1043g electric capacity can be 4.7 μ F
(microfarad).
In one embodiment, with reference to shown in figure 5, output unit 1044 include MOSFET 1044b, the 4th resistance 1044c,
5th resistance 1044d, the 6th resistance 1044e and the second electric capacity 1044f.
MOSFET 1044b grid G is connected with the 4th resistance 1044c first end, the 4th resistance 1044c the second end with
The output end 1043a connections of comparing unit 1043；MOSFET 1044b grid G is connected with the 5th resistance 1044d first end,
5th resistance 1044d the second end ground connection；6th resistance 1044e first end is connected with the 4th resistance 1044c the second end, the
Six resistance 1044e the second end ground connection；Second electric capacity 1044f first end is connected with the 4th resistance 1044c the second end, and second
Electric capacity 1044f the second end ground connection；MOSFET 1044b source S ground connection, MOSFET 1044b drain D is as time-delay reset mould
The output control terminal 1041 of block 104 is connected with the first Enable Pin 1011 of power module 101.
Example, when comparator 1043b output end is high level, because MOSFET 1044b grid G passes through the 4th
Resistance 1044c is connected with comparator 1043b output end, therefore the high level of comparator 1043b output end exports to grid G
Cut-in voltage, now MOSFET 1044b drain D and source S conducting.Because MOSFET 1044b source S is grounded, therefore make
Drain D for the MOSFET 1044b of the output control terminal 1042 of time-delay reset module 104 is low level, and then will be with MOSFET
The level of first Enable Pin 1011 of the power module 101 of 1044b drain D connection drags down so that power module 101 stops supplying
Electricity, control module 102 can power-off shutdowns.
Example, the 4th resistance 1044c resistance value can be 100 Ω, and the 5th resistance 1044d resistance value can be
10K Ω, the 6th resistance 1044e resistance value can be 10K Ω, and the second electric capacity 1044f capacitance can be 10nF (nanofarads
Draw).
In one embodiment, with reference to shown in figure 5, output unit 1044 includes the second diode 1044g；Second diode
1044g positive pole is connected with MOSFET 1044b source S, the second diode 1044g negative pole and MOSFET 1044b drain D
Connection.
Example, can be MOSFET 1044b the second diode 1044g of parallel connection, second diode 1044g is as check
Valve, for avoiding MOSFET 1044b from being reversed breakdown.
In one embodiment, with reference to shown in figure 5, switch modular converter 103 also includes triode 1035, the 7th resistance
1036th, the 8th resistance 1037 and the 3rd electric capacity 1038.
The base stage B of triode 1035 is connected with the first end of power switch 1031, the second end ground connection of power switch 1031；
The base stage B of triode 1035 is connected with the first end of the 3rd electric capacity 1038, the second end ground connection of the 3rd electric capacity 1038；Triode
1035 base stage B is connected with the first end of the 7th resistance 1036, and the second end of the 7th resistance 1036 connects the 3rd fixed level V_
SYS；Second ends 1033 and the control terminal 1023 of control module 102 of the base stage B of triode 1035 as switch modular converter 103
Connection.The colelctor electrode C of triode 1035 is connected with the first end of the 8th resistance 1037, the second end ground connection of the 8th resistance 1037；
The 3rd end 1034 that modular converter 103 is switched carried out by the colelctor electrode C of triode 1035 is enabled with the first of power module 101 respectively
Second Enable Pin 1021 of end 1011 and control module 102 connects.The emitter E of triode 1035 meets the 3rd fixed level V_
SYS。
Example, it can be seen from above-mentioned annexation, base stage B that the first end of power switch 1031 passes through triode 1035
It is connected with the 7th resistance 1036 with the 3rd fixed level V_SYS.When power switch 1031 is opened, the base stage B of triode 1035
For low level, triode 1035 is not turned on.When power switch 1031 closes, the 3rd fixed level V_SYS passes through the 7th resistance
1036 and power switch 1031 to the line conduction of ground connection, now the base stage B of triode 1035 is high level, triode 1035
Emitter E and colelctor electrode C conductings.So, emitter Es of the 3rd fixed level V_SYS by triode 1035, colelctor electrode
C and the 8th resistance 1037 are to the line conduction of ground connection, the 3rd of switch modular converter 103 carried out by the colelctor electrode C of triode 1035
The i.e. exportable high level, and then the first Enable Pin 1011 of power module 101 can be drawn high in end 1034 so that power module 101
Powered to control module 102.
Example, the resistance value of the 7th resistance 1036 can be 100K Ω, and the resistance value of the 8th resistance 1037 can be 10K
Ω, the capacitance of the 3rd electric capacity 1038 can be 10 μ F.
In one embodiment, as shown in figure 9, shutdown control circuit 10 also includes external charging module 105.External charging
3rd Enable Pin 1051 of module 105 is connected with the first Enable Pin 1011 of power module 101；External charging module 105 is used for
The 3rd Enable Pin 1051 output high level is controlled when connecting external power source so that the first Enable Pin 1011 of power module 101
For high level.
Example, external charging module 105 can determine whether to connect external power source in real time, detect connection external electrical
During source, control the 3rd Enable Pin 1051 output high level, and then draw high the level of the first Enable Pin 1011 of power module 101.
Now power module 101 can power to control module 102, realize that control module 102 works on power automatically.Or assume the pass
Machine control circuit 10 is set in the terminal, and in power module 101 after being powered to control module 102, control module 102 detects
External power source is connected to current, now control module 102 without normal work, can be merely indicative the display screen broadcasting of terminal
Charge animation.
In the technical scheme provided by this disclosed embodiment, after terminal closedown, user can be directly by outside terminal grafting
Portion's power supply, now the 3rd Enable Pin 1051 of external charging module 105 draw high the electricity of the first Enable Pin 1011 of power module 101
It is flat so that power module 101 is powered to control module 102, is realized control module 102 and is worked on power automatically, i.e., using the control
The scheme of the terminal Auto Power On of molding block 102, improves Consumer's Experience.
In one embodiment, with reference to shown in figure 5, shutdown control circuit 10 also includes the 3rd diode 106, the four or two pole
Pipe 107, the 5th diode 108, the 9th resistance 109, the tenth resistance 110 and the 11st resistance 111.
Wherein, the positive pole of the 3rd diode 106 is connected with switching the 3rd end 1034 of modular converter 103, the 3rd diode
106 negative pole is connected with the first end of the 9th resistance 109；Second end of the 9th resistance 109 is enabled with the first of power module 101
The connection of end 1011, the second end of the 9th resistance 109 is connected with the first end of the tenth resistance 110, the second end of the 9th resistance 109 and
The output control terminal 1042 of time-delay reset module 104 connects；Second end of the tenth resistance 110 and the negative pole of the 4th diode 107
Connection, the positive pole of the 4th diode 107 are connected with the second Enable Pin 1021 of control module 102；The first of 11st resistance 111
End is connected with the first end of the tenth resistance 110, and the second end of the 11st resistance 111 is connected with the negative pole of the 5th diode 108；The
The positive pole of five diodes 108 connects with being connected the 3rd Enable Pin 1051 of external charging module 105.
Example, forward bias voltage drop can be realized using the 3rd diode 106, the 4th diode 107, the 5th diode 108,
The purpose of reverse blocking, avoid the first Enable Pin 1011 of power module 101, the second Enable Pin 1021 of control module 102 with
And the output control terminal 1042 of time-delay reset module 104 is influenceed by circuit voltage fluctuation.
Example, the resistance value of the 9th resistance 109 can be 1K Ω, and the resistance value of the tenth resistance 110 can be 10K Ω,
The resistance value of 11st resistance 111 can be 1K Ω.
Embodiment of the disclosure provides a kind of shutdown control circuit 10, in 102 normal work of control module, if user needs
Terminal closedown is wanted, power switch 1031 can be pressed, now the second Enable Pin 1021 of control module 102 drags down power module
The level of 101 the first Enable Pin 1011, power module 101 stop powering to control module 102, and control module 102 can be real
Existing power-off shutdown.User can press power switch 1031 when needing starting up of terminal so that the second of control module 102 makes
First Enable Pin 1011 of energy end 1021 and power module 101 forms self-locking logic, ensures that the first Enable Pin 1011 persistently maintains
High level, now power module 101 is lasting powers to control module 102, the continuous firing of control module 102, user's normal use
Terminal.It follows that being powered off using above-mentioned shutdown control circuit 10 control control module 102, the shutdown of the terminal can be caused
The process used time is shorter, and control module 102 is stopped after shutdown so that terminal does not produce power consumption after shutdown, improves power supply
The endurance of module.The starting up of terminal of the control module 102, start process are used using the control of above-mentioned shutdown control circuit 10
The middle used time is shorter, and power consumption is smaller, further increases the endurance of power module 101.
The embodiment of the present disclosure provides a kind of terminal, and the terminal includes the pass shown in above-mentioned Fig. 1, Fig. 2, Fig. 3, Fig. 4 or Fig. 5
Machine control circuit 10.Illustrating for the shutdown control circuit 10 may be referred to any one above-mentioned embodiment.
Those skilled in the art will readily occur to the disclosure its after considering specification and putting into practice disclosure disclosed herein
Its embodiment.The application is intended to any modification, purposes or the adaptations of the disclosure, these modifications, purposes or
Person's adaptations follow the general principle of the disclosure and including the undocumented common knowledges in the art of the disclosure
Or conventional techniques.Description and embodiments are considered only as exemplary, and the true scope of the disclosure and spirit are by following
Claim is pointed out.
It should be appreciated that the precision architecture that the disclosure is not limited to be described above and is shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present disclosure is only limited by appended claim.
Claims (11)
1. a kind of shutdown control circuit, it is characterised in that the shutdown control circuit includes power module, control module and switch
Modular converter, the switch modular converter include power switch；
The first end ground connection of the switch modular converter, the second end of the switch modular converter and the control of the control module
End connection；The feeder ear of the power module is connected with the power end of the control module；The first of the power module is enabled
End connects with the second Enable Pin of the control module；
The control module is used in normal work, if detecting the power supply of the switch modular converter by the control terminal
Switch closure and closure duration are more than or equal to the first preset duration, control the second Enable Pin output low level so that with
First Enable Pin of the power module of the second Enable Pin connection is low level；
The power module is used for when first Enable Pin is low level, controls the feeder ear to stop to the control mould
Block exports supply current.
2. shutdown control circuit according to claim 1, it is characterised in that the 3rd end difference of the switch modular converter
It is connected with the first Enable Pin of the power module and the second Enable Pin of the control module；
The switch modular converter is used to detect that the power switch closes and closure duration is default more than or equal to second
During duration, the three-polar output high level of the switch modular converter is controlled so that the first Enable Pin of the power module is
High level；
The power module is used for when first Enable Pin is high level, controls the feeder ear defeated to the control module
Go out supply current；
The control module is used for after the supply current is received by the power end, works on power and controls described the
Two Enable Pins export high level so that the power module first is enabled after the power switch of the switch modular converter is opened
Support continuous maintenance high level.
3. shutdown control circuit according to claim 1 or 2, it is characterised in that the shutdown control circuit also includes prolonging
When reseting module；
The input control terminal of the time-delay reset module and the three-terminal link of the switch modular converter；The time-delay reset mould
The output control terminal of block is connected with the first Enable Pin of the power module；
The time-delay reset module is used for the duration that continuous output high level is supported in detect the switch modular converter the 3rd
During more than or equal to three preset durations, the output control terminal output low level is controlled so that the first of the power module
Enable Pin is low level.
4. shutdown control circuit according to claim 3, it is characterised in that the time-delay reset module includes comparing unit
And output unit, the output end of the comparing unit are connected with the input of the output unit, the output unit includes institute
State output control terminal；
The duration that the comparing unit is used to support continuous output high level in detect the switch modular converter the 3rd is more than
Or during equal to three preset durations, control the output end output high level；
The output unit is used for when it is high level to detect the input being connected with the output end of the comparing unit, control
The output control terminal exports low level.
5. shutdown control circuit according to claim 4, it is characterised in that the comparing unit includes comparator, first
Resistance, second resistance, 3rd resistor, the first diode and the first electric capacity；
The electrode input end of the comparator is connected with the first end of the first resistor, the second end of the first resistor and institute
State the three-terminal link of switch modular converter；The electrode input end of the comparator is connected with the positive pole of first diode,
The three-terminal link of the negative pole of first diode and the switch modular converter；The electrode input end of the comparator and institute
State the first end connection of the first electric capacity, the second end ground connection of first electric capacity；
The negative input of the comparator is connected with the first end of the second resistance, the second end connection of the second resistance
First fixed level；The negative input of the comparator is connected with the first end of the 3rd resistor, the 3rd resistor
Second end is grounded；
The positive pole control terminal of the comparator connects the second fixed level, the negative pole control terminal ground connection of the comparator；
The output end of the comparator is connected as the output end of the comparing unit with the input of the output unit.
6. shutdown control circuit according to claim 5, it is characterised in that the output unit includes MOSFET, the 4th
Resistance, the 5th resistance, the 6th resistance and the second electric capacity；
The grid of the MOSFET is connected with the first end of the 4th resistance, the second end and the comparison of the 4th resistance
The output end connection of unit；The grid of the MOSFET is connected with the first end of the 5th resistance, and the of the 5th resistance
Two ends are grounded；The first end of 6th resistance is connected with the second end of the 4th resistance, the second end of the 6th resistance
Ground connection；The first end of second electric capacity is connected with the second end of the 4th resistance, the second end ground connection of second electric capacity；
The source ground of the MOSFET, the output control terminal and the institute that drain as the time-delay reset module of the MOSFET
State the first Enable Pin connection of power module.
7. shutdown control circuit according to claim 6, it is characterised in that the output unit includes the second diode；
The positive pole of second diode is connected with the source electrode of the MOSFET, the negative pole of second diode with it is described not this
The drain electrode connection of pipe.
8. shutdown control circuit according to claim 2, it is characterised in that the switch modular converter also includes three poles
Pipe, the 7th resistance, the 8th resistance and the 3rd electric capacity；
The base stage of the triode is connected with the first end of the power switch, the second end ground connection of the power switch；It is described
The base stage of triode is connected with the first end of the 3rd electric capacity, the second end ground connection of the 3rd electric capacity；The triode
Base stage is connected with the first end of the 7th resistance, and the second end of the 7th resistance connects the 3rd fixed level；Three pole
The base stage of pipe is connected as the second end of the switch modular converter with the control terminal of the control module；
The colelctor electrode of the triode is connected with the first end of the 8th resistance, the second end ground connection of the 8th resistance；Institute
State the 3rd end of the switch modular converter carried out by the colelctor electrode of triode respectively with the first Enable Pin of the power module and
The second Enable Pin connection of the control module；
The emitter stage of the triode connects the 3rd fixed level.
9. shutdown control circuit according to claim 2, it is characterised in that the shutdown control circuit also fills including outside
Electric module；
3rd Enable Pin of the external charging module is connected with the first Enable Pin of the power module；
The external charging module is used to control the 3rd Enable Pin output high level when connecting external power source so that described
First Enable Pin of power module is high level.
10. shutdown control circuit according to claim 9, it is characterised in that the shutdown control circuit also includes the 3rd
Diode, the 4th diode, the 5th diode, the 9th resistance, the tenth resistance and the 11st resistance；
The positive pole of 3rd diode with it is described switch modular converter three-terminal link, the negative pole of the 3rd diode with
The first end connection of 9th resistance；Second end of the 9th resistance is connected with the first Enable Pin of the power module,
Second end of the 9th resistance is connected with the first end of the tenth resistance, the second end and the delay of the 9th resistance
The output control terminal connection of reseting module；Second end of the tenth resistance is connected with the negative pole of the 4th diode, described
The positive pole of 4th diode is connected with the second Enable Pin of the control module；The first end of 11st resistance and described the
The first end connection of ten resistance, the second end of the 11st resistance is connected with the negative pole of the 5th diode；Described 5th
The positive pole of diode and the 3rd Enable Pin of the connection external charging module connect.
11. a kind of terminal, it is characterised in that the terminal includes the pass described in claim 1 to 10 any one claim
Machine control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883720.0A CN107707231B (en) | 2017-09-26 | 2017-09-26 | Shutdown control circuit and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883720.0A CN107707231B (en) | 2017-09-26 | 2017-09-26 | Shutdown control circuit and terminal |
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| CN107707231A true CN107707231A (en) | 2018-02-16 |
| CN107707231B CN107707231B (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710883720.0A Active CN107707231B (en) | 2017-09-26 | 2017-09-26 | Shutdown control circuit and terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200311A (en) * | 2018-11-19 | 2019-01-15 | 深圳市欣点通科技有限公司 | Charging disinfection pedestal and control circuit |
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| US20130100718A1 (en) * | 2011-10-20 | 2013-04-25 | Chervon (Hk) Limited | Power starting circuit |
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| US20150177803A1 (en) * | 2013-12-24 | 2015-06-25 | Alpha Networks Inc. | Electronic device capable of automatically resetting and automatic resetting method thereof |
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| CN206421176U (en) * | 2017-01-24 | 2017-08-18 | 深圳市大疆创新科技有限公司 | Battery management system, battery and unmanned plane |
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| US20130100718A1 (en) * | 2011-10-20 | 2013-04-25 | Chervon (Hk) Limited | Power starting circuit |
| US20150177803A1 (en) * | 2013-12-24 | 2015-06-25 | Alpha Networks Inc. | Electronic device capable of automatically resetting and automatic resetting method thereof |
| CN204161536U (en) * | 2014-09-26 | 2015-02-18 | 纳恩博（天津）科技有限公司 | Be applied to the multifunctional button mechanism of kinetic balance car |
| 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 |
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| CN109200311A (en) * | 2018-11-19 | 2019-01-15 | 深圳市欣点通科技有限公司 | Charging disinfection pedestal and control circuit |
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| CN107707231B (en) | 2021-11-05 |
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