CN108599125A - Discharge circuit and electronic equipment - Google Patents
Discharge circuit and electronic equipment Download PDFInfo
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- CN108599125A CN108599125A CN201810470239.3A CN201810470239A CN108599125A CN 108599125 A CN108599125 A CN 108599125A CN 201810470239 A CN201810470239 A CN 201810470239A CN 108599125 A CN108599125 A CN 108599125A
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- triode
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- power supply
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
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Abstract
The application provides a kind of discharge circuit, is connect with power supply by the input terminal of control circuit, and the output end of control circuit and the first end of capacitance connect, and the second end ground connection of capacitance controls capacitor charge and discharge；The emitter of first triode and the first end of capacitance connect, and the base stage of the first triode is connect by first resistor with power supply, and the collector of the first triode is connect with the base stage of the second triode；It is connect with operational module by the collector of the second triode, the emitter ground connection of the second triode.When power supply power supply, control circuit conducting, capacitor charging；After the completion of capacitor charging, control circuit shutdown, the cut-off of the first and second triodes, supply voltage is for operational module use；When power remove, control circuit shutdown, the first triode ON and the second triode ON, residual charge amount is by the emitter rapid grounding of the second triode in operational module circuit, to achieve the effect that repid discharge.
Description
Technical field
This application involves technical field of integrated circuits more particularly to a kind of discharge circuits and electronic equipment.
Background technology
It is generalizable in modern society's Internet of Things, under Internet of Things overall situation, it is hard to have expedited the emergence of many low power-consumption intelligents
Part product, such as Intelligent bracelet, smartwatch, intelligent remote controller product.
Low-power consumption product in order to keep very-low power consumption in use, it will usually without using in the case of enter it is standby
State, so that least in power-consuming.The circuit load of such product is relatively low, after system cut-off, the electricity that is stored in circuit system
What lotus amount discharged also can be slow, if powered off in the state of standby, electricity can discharge slower.So, if storage
In the case that the quantity of electric charge is that fully release is not completed, system powers on again, just will appear the unstable phenomenon of circuit, or even can lead
Cause system can not normally start, to damage low-power consumption product.
Invention content
In view of this, a kind of discharge circuit of the application offer, IC chip and electronic equipment, to solve down circuitry
Afterwards, system charge release is slow, the problem of influencing next boot system stability.
The application first aspect provides a kind of discharge circuit, including control circuit, the first triode, the second triode, the
One resistance and capacitance.
Wherein, the input terminal of the control circuit is connect with power supply, the output end of the control circuit and the capacitance
First end connects, and the second end ground connection of the capacitance, the control circuit is used to control the charge and discharge of the capacitance.Described first
The emitter of triode is connect with the first end of the capacitance, and the base stage of first triode passes through the first resistor and institute
Power supply connection is stated, the collector of first triode is connect with the base stage of second triode.Second triode
The input terminal of collector and operational module connects, the emitter ground connection of second triode, the input terminal of the operational module
Also it is connect with the power supply.
Optionally, first triode is PNP type triode, and second triode is NPN type triode.
Optionally, the discharge circuit further includes anti-clutter circuit, for preventing the base stage of second triode to be in
Vacant state.
Optionally, the anti-clutter circuit includes third transistor and second resistance.Wherein, the first of the second resistance
End is connect with the base stage of second triode, the base stage and collector of the third transistor and the second of the second resistance
End connection, the emitter ground connection of the third transistor.
Optionally, the control circuit includes the 4th triode, wherein the 4th triode is PNP type triode.Institute
The emitter for stating the 4th triode is connected to power supply, the first end phase of the collector and base stage and capacitance of the 4th triode
Even, the second end ground connection of the capacitance.
Optionally, the control circuit includes the 5th triode, and the 5th triode is NPN type triode.Described
The base stage and collector of five triodes are connected to power supply, and the emitter of the 5th triode even connects with the first end of the capacitance
It connects, the second end ground connection of the capacitance；
Optionally, the control circuit includes a diode, and the input terminal of the diode is connected to power supply, the diode
Output end is connect with the first end of the capacitance, the second end ground connection of the capacitance.
On the other hand the application provides a kind of electronic equipment, including power supply, operational module and as described above any put
Circuit.
To sum up, discharge circuit provided by the present application is connect by the input terminal of control circuit with power supply, the control circuit
Output end connect with the first end of the capacitance, the second end of capacitance ground connection forms and is filled by control circuit control capacitance
The circuit of electric discharge；The emitter of first triode is connect with the first end of the capacitance, the base stage of first triode
It is connect with the power supply by the first resistor, the collector of first triode and the base stage of second triode connect
It connects, is connect with operational module by the collector of second triode, the emitter ground connection of second triode.Work as power supply
When power supply, control circuit conducting controls capacitor charging, after the completion of capacitor charging, control circuit shutdown, and the first and second three poles
Pipe ends, and supply voltage is used for operational module；When power remove, control circuit shutdown, the first triode ON so that the
Two triodes are also switched on, and residual charge amount is by the emitter rapid grounding of the second triode in operational module circuit, to reach
The effect of repid discharge is arrived.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of discharge circuit provided by the present application；
Fig. 2 is a kind of structural schematic diagram one of discharge circuit provided by the present application；
Fig. 3 is a kind of structural schematic diagram two of discharge circuit provided by the present application；
Fig. 4 is a kind of structural schematic diagram three of discharge circuit provided by the present application；
Fig. 5 is a kind of structural schematic diagram four of discharge circuit provided by the present application；
Fig. 6 is a kind of structural schematic diagram five of discharge circuit provided by the present application；
Fig. 7 is the structural schematic diagram of a kind of electronic equipment system provided by the present application.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of consistent device and method of some aspects be described in detail in claims, the application.
It is the purpose only merely for description specific embodiment in term used in this application, is not intended to be limiting the application.
It is also intended to including majority in the application and "an" of singulative used in the attached claims, " described " and "the"
Form, unless context clearly shows that other meanings.It is also understood that term "and/or" used herein refers to and wraps
Containing one or more associated list items purposes, any or all may be combined.
It will be appreciated that though various information, but this may be described using term first, second, third, etc. in the application
A little information should not necessarily be limited by these terms.These terms are only used for same type of information being distinguished from each other out.For example, not departing from
In the case of the application range, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as
One information.Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination ".
A kind of discharge circuit of the application offer and electronic equipment, to solve in existing circuit, after power cut-off, in circuit
The electricity of storage discharged slow problem.
Low-power consumption product in order to keep very-low power consumption in use, it will usually without using in the case of enter it is standby
State, so that least in power-consuming.The circuit load of such product is relatively low, after system cut-off, the electricity that is stored in circuit system
What lotus amount discharged also can be slow, if powered off in the state of standby, the quantity of electric charge can discharge slower.So, if storage
The quantity of electric charge without fully release complete in the case of, system powers on again, just will appear the unstable phenomenon of circuit, or even meeting
System is caused not start normally, to damage low-power consumption product.
Illustratively, in remote controler, low-power consumption product is low-power consumption bluetooth chip, for remote controler and intellectual product
Data interaction.Requirement of the Bluetooth chip to voltage stability is very high, and when user uses remote controler, Bluetooth chip is in work shape
State, when not using remote controler in user's long period, remote controler is in standby, and the release of remote controler electricity is slow.If
User the electricity that system stores not yet fully release just remote controller is allowed to power on again when, may be due to low and high level
It is disorderly and unsure state occur.By the way that discharge circuit is arranged between power supply and Bluetooth chip, Bluetooth chip can be made not
When working or be standby, the electricity quick release in system, and when Bluetooth chip works normally, which does not consume electricity
Amount, achievees the purpose that low-power consumption.
Several specific embodiments are given below, the technical solution for the application to be discussed in detail, below these are specific
Embodiment can be combined with each other, same or analogous concept or process may be repeated no more in some embodiments.
Fig. 1 is a kind of structural schematic diagram of discharge circuit provided by the present application.Discharge circuit provided in this embodiment, including
Control circuit 11, the first triode Q1, the second triode Q2, first resistor R1 and capacitance C1.
Wherein, the input terminal of control circuit 11 is connect with power supply, and the output end of control circuit connects with the first end of capacitance C1
It connects, the second end ground connection of the capacitance C2.
The emitter of first triode Q1 is connect with the first end of capacitance C1, and the base stage of the first triode Q1 passes through the first electricity
Resistance R1 is connect with power supply, and the collector of the first triode Q1 is connect with the base stage of the second triode Q2；The collection of second triode Q2
Electrode is connect with operational module, the emitter ground connection of the second triode Q2.The input terminal of operational module is also connected with power supply.It is optional
, operational module is low-power consumption bluetooth chip.
Wherein, the first triode Q1 is PNP type triode, and the second triode Q2 is NPN type triode.
Optionally, which further includes 3rd resistor R3, and the first end of 3rd resistor is connect with power supply, second end and work
Module connects, and the input terminal for acting as protection operating circuit of 3rd resistor prevents the electric current that it is flowed through excessive.
It following is a brief introduction of the operation principle of discharge circuit provided by the present application.
When power supply Vi powers, control circuit 11 is connected, and power supply gives capacitance C1 to charge by control circuit, and at this time the 1st
The emitter voltage of pole pipe Q1 is less than base voltage, and the first triode Q1 is in cut-off state, after capacitance C1 charging completes, reaches
Stable state when to power supply power supply, the emitter voltage of the first triode Q1 are equal to base voltage, the first triode Q1 still in
Cut-off state, so the second triode Q2 being connected with the first triode Q1 is also at cut-off state.So power supply is directly to work
Make module for power supply, entire discharge circuit consumes few electricity.
When power supply Vi is turned off, control circuit 11 is off state, due to capacitance C1 storing electricities, so the one or three pole
The emitter voltage of pipe Q1 is higher than base voltage, the first triode Q1 conductings.Due to the base stage and the one or three of the second triode Q2
The collector connection emitter ground connection of pole pipe Q1, so the base voltage of the second triode Q2 is higher than emitter voltage, so the
Two triode Q2 are connected, and remaining electricity can be grounded and discharge in operational module.
Fig. 2 is a kind of structural schematic diagram of discharge circuit provided by the present application.When power supply power supply, at the first triode Q1
In cut-off state, this causes the base stage of the second triode to be in hanging unsure state, if occur disturbing in system or
There is high level in the base stage of the interference of moment, the second triode Q2, this also results in the second triode Q2 transient switchings, cause be
It unites unstable.To prevent the generation of the above situation, the discharge circuit of the present embodiment further includes anti-clutter circuit 22, for preventing
In the off state, base stage is in hanging state to two triode Q2.
Specifically, the discharge circuit shown in an exemplary embodiment provided by the present application is as shown in Figure 3.Anti-clutter circuit 22
Including third transistor Q3 and second resistance R2.Wherein, the first end of second resistance R2 and the base stage of second triode connect
It connects, the base stage and collector of the three or three pole Q3 pipes are connect with the second end of second resistance R2, and the emitter of third transistor Q3 connects
Ground.In power supply power supply in the case of the second triode Q2 cut-offs, when there is high level to occur, third transistor Q3 conductings will
Voltage instantaneous drags down, and reaches the situation for preventing the system caused by disturbance unstable.
Optionally, with reference to shown in Fig. 4, control circuit includes the 4th triode Q4.Wherein, the 4th triode Q4 is one
PNP type triode.The emitter of 4th triode Q4 is connect with power supply, collector and base stage and the capacitance C1 of the 4th triode Q4
First end connection, capacitance C2 second end ground connection.The emitter of first triode Q1 is connect with the first end of capacitance C1, and first
The base stage of triode Q1 is connect by first resistor R1 with power supply, the base of the collector of the first triode Q1 and the second triode Q2
Pole connects；The collector of second triode Q2 is connect with operational module, the emitter ground connection of the second triode Q2.Operational module
Input terminal is also connected with power supply.Optionally, operational module is low-power consumption bluetooth chip.Wherein, the first triode Q1 is three pole of positive-negative-positive
Pipe, the second triode Q2 are NPN type triode.
When power supply electrifying, the 4th triode Q4 conductings, capacitance C1 charges, and the collector and base stage of the 4th triode Q4 is equal
It is connected to the anode of capacitance C1.It is to be charged completely after, the base stage and emitter voltage of the 4th triode Q4 are equal namely the one or three
The base stage and emitter voltage of pole pipe Q1 is equal, therefore the first triode Q1 cut-offs, the second triode Q2 base stages do not have control source,
Therefore the second pole pipe Q2 is also switched off.Therefore power supply can power directly to operational module, discharge circuit enters after capacitor charging complete
Off-state does not influence the normal work of operational module, will not cause additional power consumption penalty.
When power remove, charge needs to discharge in time, and the voltage of the emitter of the 4th triode Q4 declines rapidly, and the 4th
Due to being connected with capacitance, the voltage of the first capacitance C1 declines slowly the base stage of triode Q4, so the base stage electricity of the 4th triode
Pressure is higher than emitter, the 4th triode Q4 cut-offs, and the voltage of the emitter of the first triode Q1 is higher than the base of the first triode Q1
Pole tension, the first triode Q1 conductings.The conducting of first triode Q1 provides bias voltage for the base stage of the second triode Q2,
The bias voltage makes the second triode Q2 be connected rapidly, the input end grounding of operational module, to reach the mesh to discharge rapidly
's.
Optionally, referring to Figure 5, control circuit includes the 5th triode Q5.Wherein, the 5th triode Q5 is NPN tri-
Pole pipe.The circuit can reduce device cost as possible.
The base stage and collector of 5th triode Q5 is connect with power supply, and the of the emitter of the 5th triode Q5 and capacitance C1
One end connects, the second end ground connection of capacitance C2.The emitter of first triode Q1 is connect with the first end of capacitance C1, the one or three pole
The base stage of pipe Q1 is connect by first resistor R1 with power supply, and the base stage of the collector of the first triode Q1 and the second triode Q2 connect
It connects；The collector of second triode Q2 is connect with operational module, the emitter ground connection of the second triode Q2.The input of operational module
End is also connected with power supply.Optionally, operational module is low-power consumption bluetooth chip.Wherein, the first triode Q1 is PNP type triode,
Second triode Q2 is NPN type triode.
When power supply electrifying, the 5th triode Q5 conductings, capacitance C1 charges, and the collector of the 5th triode Q5 is connected to electricity
Hold the anode of C1.It is to be charged completely after, the base stage and emitter voltage of the 5th triode Q5 be equal namely the first triode Q1
Base stage and emitter voltage are equal, therefore the first triode Q1 cut-off, and the second triode Q2 base stages do not have a control source, therefore the second pole
Pipe Q2 is also disconnected.Therefore power supply can power directly to operational module, discharge circuit is after capacitor charging complete, into disconnection shape
State does not influence the specific works of operational module, will not cause additional power consumption penalty.
When power remove, electricity needs to discharge in time, and the voltage of the base stage of the 5th triode Q5 declines rapidly, and the five or three
Due to being connected with capacitance, voltage declines slowly the emitter of pole pipe Q5, so the emitter voltage of the 5th triode Q5 is higher than base
The voltage of pole, the 5th triode Q5 cut-offs, the emitter of the first triode Q1 is higher than base voltage, the first triode Q1 conductings.
The conducting of first triode Q1 provides bias voltage for the base stage of the second triode Q2, which makes the second triode
Q2 is connected rapidly, the input end grounding of operational module, to achieve the purpose that discharge rapidly.
Optionally, with reference to shown in Fig. 6, control circuit includes diode Q6.The circuit can reduce device cost as possible.
The first end of diode Q6 is connect with power supply, and the second end of diode Q6 is connect with the first end of capacitance C1, capacitance
The second end of C1 is grounded.The emitter of first triode Q1 is connect with the first end of capacitance C1, and the base stage of the first triode Q1 is logical
It crosses first resistor R1 to connect with power supply, the collector of the first triode Q1 is connect with the base stage of the second triode Q2；Second three-level
The collector of pipe Q2 is connect with operational module, the emitter ground connection of the second triode Q2.The input terminal of operational module is also connected with electricity
Source.Optionally, operational module is low-power consumption bluetooth chip.Wherein, the first triode Q1 is PNP type triode, the second triode
Q2 is NPN type triode.
When power supply electrifying, diode Q6 conductings, capacitance C1 charges, and the second end of diode Q6 is being connected to capacitance C1 just
Pole.It is to be charged completely after namely the first triode Q1 base stage and emitter voltage it is equal, therefore the first triode Q1 cut-off, the
Two triode Q2 base stages do not have control source, therefore the second pole pipe Q2 is also switched off.Therefore power supply power supply can directly feed operational module, put
Circuit is after capacitor charging complete, into off-state, does not influence the specific works of operational module, will not cause additional
Power consumption penalty.
When power remove, voltage declines slowly, and diode Q6 cut-offs, the voltage of the emitter of the first triode Q1 is higher than
Base voltage, the first triode Q1 conductings.The conducting of first triode Q1 provides biased electrical for the base stage of the second triode Q2
Pressure, which makes the second triode Q2 be connected rapidly, the input end grounding of operational module, discharges rapidly to reach
Purpose.
The structural schematic diagram of Fig. 7 electronic apparatus systems provided by the invention.If Fig. 7 shows, electronics provided in this embodiment is set
Standby system 130 includes discharge circuit 1303 described in power supply 1301, electronic equipment 1302 and previous embodiment.Specifically, may be used
Discharge circuit 1303 is arranged in operational module 1302, discharge circuit 1303 is arranged in electronic equipment 130.In electronic equipment
130 when needing power supply 1301 to power it, and power supply 1301 is powered to electronic equipment 1302.After power cut-off, pass through the electricity that discharges
Road 1303 is by the remaining capacity quick release in electronic equipment.The discharge circuit can be household electrical appliance, industrial electrical equipment or terminal
The equipment such as communication apparatus.
Electronic apparatus system 130 provided by the embodiments of the present application can be applied to household electrical appliance, industrial electrical equipment or terminal
In the every field such as communication apparatus.Discharge circuit 1303 is connected to power supply and operational module（Such as Bluetooth chip）Between, it can
The quick release of remaining capacity after power cut-off.
Electronic apparatus system 130 provided by the embodiments of the present application uses discharge circuit 1303 as described above, can perform
Above-described embodiment implements principle and technique effect, reference can be made to above method embodiment, the present embodiment is no longer superfluous herein
It states.
The foregoing is merely the preferred embodiments of the application, not limiting the application, all essences in the application
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of the application protection god.
Claims (8)
1. a kind of discharge circuit, including control circuit, the first triode, the second triode, first resistor and capacitance；
Wherein, the input terminal of the control circuit is connect with power supply, the output end of the control circuit and the first of the capacitance
End connection, the second end ground connection of the capacitance, the control circuit are used to control the charge and discharge of the capacitance；
The emitter of first triode is connect with the first end of the capacitance, and the base stage of first triode is described in
First resistor is connect with the power supply, and the collector of first triode is connect with the base stage of second triode；
The collector of second triode and the input terminal of operational module connect, the emitter ground connection of second triode,
The input terminal of the operational module is also connect with the power supply.
2. discharge circuit according to claim 1, which is characterized in that first triode is PNP type triode, described
Second triode is NPN type triode.
3. discharge circuit according to claim 1, which is characterized in that the discharge circuit further includes anti-clutter circuit, is used
It is in vacant state in preventing the base stage of second triode.
4. discharge circuit according to claim 2, which is characterized in that the anti-clutter circuit includes third transistor and
Two resistance；
Wherein, the first end of the second resistance is connect with the base stage of second triode, the base stage of the third transistor
It is connect with collector with the second end of the second resistance, the emitter ground connection of the third transistor.
5. discharge circuit according to claim 1, which is characterized in that the control circuit includes the 4th triode, wherein
4th triode is PNP type triode；
The emitter of 4th triode is connected to power supply, the collector of the 4th triode and the first of base stage and capacitance
End is connected, the second end ground connection of the capacitance.
6. discharge circuit according to claim 1, which is characterized in that the control circuit includes the 5th triode, described
5th triode is NPN type triode；
The base stage and collector of 5th triode are connected to power supply, and the emitter of the 5th triode connects and the capacitance
First end connection, the capacitance second end ground connection.
7. discharge circuit according to claim 1, which is characterized in that the control circuit include a diode, described two
The input terminal of pole pipe is connected to power supply, and the output end of the diode is connect with the first end of the capacitance, and the of the capacitance
Two ends are grounded.
8. a kind of electronic equipment, which is characterized in that including power supply, operational module and as any one of claim 1-7 rights are wanted
Seek the discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470239.3A CN108599125A (en) | 2018-05-16 | 2018-05-16 | Discharge circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810470239.3A CN108599125A (en) | 2018-05-16 | 2018-05-16 | Discharge circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108599125A true CN108599125A (en) | 2018-09-28 |
Family
ID=63631559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810470239.3A Pending CN108599125A (en) | 2018-05-16 | 2018-05-16 | Discharge circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108599125A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076629A (en) * | 2020-01-17 | 2020-04-28 | 杭州晋旗电子科技有限公司 | Discharge control circuit and electronic detonator |
| CN111654095A (en) * | 2020-05-22 | 2020-09-11 | 珠海格力电器股份有限公司 | Super capacitor charging and discharging circuit and electronic product with same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202261591U (en) * | 2011-02-24 | 2012-05-30 | 广州视源电子科技有限公司 | Power failure rapid discharge circuit |
| CN202906457U (en) * | 2012-08-16 | 2013-04-24 | 惠州市德赛西威汽车电子有限公司 | Residual voltage discharge circuit |
| CN204517389U (en) * | 2015-03-19 | 2015-07-29 | 北车大连电力牵引研发中心有限公司 | Discharge circuit |
-
2018
- 2018-05-16 CN CN201810470239.3A patent/CN108599125A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202261591U (en) * | 2011-02-24 | 2012-05-30 | 广州视源电子科技有限公司 | Power failure rapid discharge circuit |
| CN202906457U (en) * | 2012-08-16 | 2013-04-24 | 惠州市德赛西威汽车电子有限公司 | Residual voltage discharge circuit |
| CN204517389U (en) * | 2015-03-19 | 2015-07-29 | 北车大连电力牵引研发中心有限公司 | Discharge circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111076629A (en) * | 2020-01-17 | 2020-04-28 | 杭州晋旗电子科技有限公司 | Discharge control circuit and electronic detonator |
| CN111076629B (en) * | 2020-01-17 | 2022-06-17 | 杭州晋旗电子科技有限公司 | Discharge control circuit and electronic detonator |
| CN111654095A (en) * | 2020-05-22 | 2020-09-11 | 珠海格力电器股份有限公司 | Super capacitor charging and discharging circuit and electronic product with same |
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Application publication date: 20180928 |