CN106160460A - The charge pump circuit of quick charge - Google Patents
The charge pump circuit of quick charge Download PDFInfo
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- CN106160460A CN106160460A CN201510149121.7A CN201510149121A CN106160460A CN 106160460 A CN106160460 A CN 106160460A CN 201510149121 A CN201510149121 A CN 201510149121A CN 106160460 A CN106160460 A CN 106160460A
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- input voltage
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- charge pump
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Abstract
The present invention relates to electronic technology field, be specifically related to the charge pump circuit of a kind of quick charge, including, switch controlling signal produces circuit, for producing one group of switch controlling signal；It is provided with the regulating circuit of storage capacitor, including multiple switching branches, be controllably connected to the first Input voltage terminal, the second Input voltage terminal, between output voltage terminal and earth terminal, switching branches combines turn-on and turn-off under switch controlling signal effect so that the first Input voltage terminal directly connects with output voltage terminal within the first setting time, or in the second setting time internal pressure-regulating circuit alternation in charge mode and discharge mode, after making the second input voltage and the first input voltage superposition, it is supplied to output voltage terminal.The charge pump circuit of the present invention can make the time needed for system electrification to the output voltage that generation is constant be greatly shortened, to improve the work efficiency of system.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of charge pump circuit.
Background technology
Electric charge pump is to utilize electric capacity as a kind of Switching Power Supply of energy-storage travelling wave tube, and its inside is switched by control
Pipe array controls the discharge and recharge of electric capacity, to be supplied to load after obtaining the output voltage needed, according to not
Same topological structure, electric charge pump can realize boosting, blood pressure lowering and voltage reversal function, and common system is such as
Shown in Fig. 1, electric charge pump is supplied to bear after one running voltage VDD is transformed to output voltage CPVDD
Running voltage needed for load；Owing to charge pump circuit external circuits is simple, and do not use inductance as storage
Energy element, thus electromagnetic interference is little, is widely used in measuring instrument, digital camera and portable communications and sets
In Bei, existing charge pump circuit is when boosting to input voltage, constant to producing from system electrification
Output voltage needed for voltage transition time long, have impact on the work efficiency of system.
Summary of the invention
It is an object of the invention to, it is provided that the charge pump circuit of a kind of quick charge, solve above technology and ask
Topic；
Technical problem solved by the invention can realize by the following technical solutions:
The charge pump circuit of quick charge, wherein, including,
One switch controlling signal produces circuit, for producing one group of switch controlling signal；
One regulating circuit being provided with storage capacitor, described regulating circuit includes,
One first Input voltage terminal, is connected with one first input voltage；
One second Input voltage terminal, is connected with one second input voltage；
One output voltage terminal, the voltage after exporting conversion；
Multiple switching branches, are controllably connected to described first Input voltage terminal, described second input electricity
Pressure side, between described output voltage terminal and earth terminal；
Described switching branches combines turn-on and turn-off so that in first under described switch controlling signal effect
In the setting time, described first Input voltage terminal directly connects with described output voltage terminal, or sets in second
In time, described regulating circuit alternation is in charge mode and discharge mode, makes described second input voltage
It is supplied to described output voltage terminal after superposing with described first input voltage.
The charge pump circuit of the quick charge of the present invention, described regulating circuit includes:
First switching branches, is connected between described first Input voltage terminal and one first reference mode；
Second switch branch road, is connected between described first reference mode and described output voltage terminal；
3rd switching branches, is connected between described second Input voltage terminal and one second reference mode；
4th switching branches, is connected between described second reference mode and earth terminal；
Described first switching branches, described second switch branch road, described 3rd switching branches and the described 4th are opened
The control end closing branch road is connected with described switch controlling signal generation circuit respectively；
One first storage capacitor is connected between described first reference mode and described second reference mode；
One second storage capacitor is connected between described output voltage terminal and described earth terminal.
The charge pump circuit of the quick charge of the present invention, described regulating circuit when charge mode, described first
Switching branches and described 4th switching branches conducting, described second switch branch road and described 3rd switching branches
Disconnecting, described first Input voltage terminal is to described first storage capacitor charging；Described regulating circuit is in electric discharge
During pattern, described first switching branches and described 4th switching branches disconnect, described second switch branch road and
Described 3rd switching branches conducting, described second input voltage and the voltage at described first storage capacitor two ends
The backward described second storage capacitor electric discharge of superposition.
The charge pump circuit of the quick charge of the present invention, described switch controlling signal produces circuit and includes,
Comparator, believes from voltage feedback signal and a reference voltage of described output voltage terminal according to a sampling
Number produce a comparison signal；
Control electrical appliances for electric charge pump, produces multiple described switch controlling signal under the effect of described comparison signal.
The charge pump circuit of the quick charge of the present invention, described first input voltage and described second input electricity
That presses is equal in magnitude.
The charge pump circuit of the quick charge of the present invention, described first sets the time less than described second setting
Time.
The charge pump circuit of the quick charge of the present invention, described first switching branches connects one the oneth P ditch
Road metal-oxide-semiconductor, the grid of described first P-channel metal-oxide-semiconductor connects the first control signal, and substrate connects the
Two control signals, other two terminal connects described first Input voltage terminal and described first reference node respectively
Point.
The charge pump circuit of the quick charge of the present invention, described second switch branch road connects one the 2nd P ditch
Road metal-oxide-semiconductor, the grid of described second P-channel metal-oxide-semiconductor connects the 3rd control signal, and its substrate connects
Described second control signal, other two terminal connects described output voltage terminal and described first reference respectively
Node.
The charge pump circuit of the quick charge of the present invention, described 3rd switching branches connects one the 3rd P ditch
Road metal-oxide-semiconductor, the grid of described 3rd P-channel metal-oxide-semiconductor connects the 4th control signal, and its source electrode connects
Described second Input voltage terminal, its drain electrode connects described second reference mode.
The charge pump circuit of the quick charge of the present invention, described 4th switching branches connects a N-channel
Metal-oxide-semiconductor, the grid of described N-channel MOS pipe connects the 5th control signal, and its source electrode connects described the
Two reference modes, its drain electrode connects described earth terminal.
Beneficial effect: owing to using above technical scheme, the charge pump circuit of the present invention can set in first
When fixing time, the first input voltage is supplied directly to output voltage terminal, second set in the time alternately charging and
Electric discharge is to accelerate voltage transformation process so that from needed for system electrification to the constant output voltage of generation time
Between be greatly shortened, improve system work efficiency.
Accompanying drawing explanation
Fig. 1 is the system construction drawing using electric charge pump to power；
Fig. 2 is the charge pump circuit structure chart of the present invention；
Fig. 3 showing, the present invention moves towards figure (see black lines) in the first circuit setting the time；
Fig. 4 shows the present invention in the second setting time be in the circuit of charge mode move towards schematic diagram (see
Black lines)；
Fig. 5 shows the present invention in the second setting time be in the circuit of discharge mode move towards schematic diagram (see
Black lines)；
Fig. 6 is that the electric charge pump of prior art is power-up to export the V-t waveform of constant output voltage and shows from starting
It is intended to；
Fig. 7 is the waveform diagram that the electric charge pump of the present invention is power-up to export constant output voltage from startup.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained on the premise of going out creative work, broadly falls into the scope of protection of the invention.
It should be noted that in the case of not conflicting, the embodiment in the present invention and the spy in embodiment
Levy and can be mutually combined.
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as the present invention's
Limit.
Reference Fig. 2, Fig. 3, Fig. 4, Fig. 5, the charge pump circuit of quick charge, wherein, including,
One switch controlling signal produces circuit 12, for producing one group of switch controlling signal；
One regulating circuit 13 being provided with storage capacitor, regulating circuit 13 includes,
One first Input voltage terminal VDD1, is connected with one first input voltage；
One second Input voltage terminal VDD2, is connected with one second input voltage；
One output voltage terminal Vout, the voltage after exporting conversion；
Multiple switching branches, are controllably connected to the first Input voltage terminal VDD1, the second input
Between voltage end VDD2, output voltage terminal Vout and earth terminal GND,
Multiple switching branches combine turn-on and turn-off so that in first under switch controlling signal effect
In the setting time, the first Input voltage terminal VDD1 directly connects with output voltage terminal Vout, or in
Second setting time internal pressure-regulating circuit alternation, in charge mode and discharge mode, makes the second input
It is supplied to output voltage terminal Vout after voltage VDD2 and the first input voltage VDD1 superposition.
Regulating circuit 13 is within one first setting time, and the first input voltage is provided directly to output voltage terminal
Vout；Within one second setting time, regulating circuit 13 alternation in charge mode and discharge mode with
To accelerate voltage transformation process, improve the work efficiency of system.
The charge pump circuit of the quick charge of the present invention, regulating circuit 13 may include that
First switching branches, is connected between the first Input voltage terminal VDD1 and one first reference mode A；
Second switch branch road, is connected between the first reference mode A and output voltage terminal Vout；
3rd switching branches, is connected between the second Input voltage terminal VDD2 and one second reference mode B；
4th switching branches, is connected between the second reference mode B and earth terminal GND；
The control end of the first switching branches, second switch branch road, the 3rd switching branches and the 4th switching branches divides
Do not produce circuit 12 with switch controlling signal to be connected；
One first storage capacitor C1 is connected between the first reference mode A and the second reference mode B；
One second storage capacitor C2 is connected between output voltage terminal Vout and earth terminal GND.
The charge pump circuit of the quick charge of the present invention, regulating circuit 13 is when charge mode, and first switchs
Branch road and the conducting of the 4th switching branches, second switch branch road and the 3rd switching branches disconnect, the first input electricity
Pressure side VDD1 is charged to the first storage capacitor C1；Regulating circuit 13 is when discharge mode, and first switchs
Branch road and the 4th switching branches disconnect, second switch branch road and the conducting of the 3rd switching branches, the second input electricity
Discharge to the second storage capacitor C2 after pressure and the voltage superposition at the first storage capacitor C1 two ends.
The double voltage that traditional booster circuit output voltage to be realized utilizing electric charge pump is input voltage
Time, need charging and discharging repeatedly, with reference to shown in Fig. 6, need to consume the longer time；And this
Bright by first set the time time the first input voltage be supplied directly to output voltage terminal, second set time
Between time perform above-mentioned charge and discharge mode, to accelerate boost process, improve system work efficiency.
The charge pump circuit of the quick charge of the present invention, switch controlling signal produces circuit 12 and includes,
Comparator 123, according to a sampling from the voltage feedback signal and of output voltage terminal Vout with reference to electricity
Pressure signal produces a comparison signal；
Control electrical appliances for electric charge pump 121, produces multiple switch controlling signal under the effect of comparison signal.
The charge pump circuit of the quick charge of the present invention, the first input voltage and the size of the second input voltage
Can be equal.
The charge pump circuit of the quick charge of the present invention, first sets the time less than the second setting time.The
One setting time was supplied directly to output voltage terminal due to the first input voltage, can be in the short period of time
Complete.
The charge pump circuit of the quick charge of the present invention, the first switching branches can connect one the oneth P ditch
Road metal-oxide-semiconductor Mp, the grid of the first P-channel metal-oxide-semiconductor Mp connects the first control signal MpCtrl,
Substrate connects the second control signal Bse1, and other two terminal connects the first Input voltage terminal VDD1 respectively
With the first reference mode A.
The charge pump circuit of the quick charge of the present invention, second switch branch road can connect one the 2nd P ditch
The grid of road metal-oxide-semiconductor Mp1, the second P-channel metal-oxide-semiconductor Mp1 connects the 3rd control signal Mp1Ctrl,
Its substrate connects the second control signal Bse1, other two terminal connect respectively output voltage terminal Vout and
First reference mode A.
The charge pump circuit of the quick charge of the present invention, the 3rd switching branches can connect one the 3rd P ditch
The grid of road metal-oxide-semiconductor Mp3, the 3rd P-channel metal-oxide-semiconductor Mp3 connects the 4th control signal Mp3Ctrl,
Its source electrode connects the second Input voltage terminal VDD2, and its drain electrode connects the second reference mode B.
The charge pump circuit of the quick charge of the present invention, the 4th switching branches can connect a N-channel
The grid of metal-oxide-semiconductor Mn2, N-channel MOS pipe Mn2 connects the 5th control signal Mn2Ctrl, its source
Pole connects the second reference mode B, and its drain electrode connects earth terminal GND.
Illustrating the voltage transformation process of the present invention in conjunction with Fig. 7, within the first setting time, first opens
Closing branch road and the conducting of second switch branch road, the first input voltage is supplied directly to output voltage terminal, such as first
When input voltage is 3V, output voltage terminal can be made to be rapidly achieved 3V, within the second setting time, fill
Under power mode, the first switching branches and the conducting of the 4th switching branches, the first input voltage is to the first energy storage electricity
Hold C1 charging making the first storage capacitor C1 both end voltage is VDD1, then under discharge mode, the
Two switching branches and the conducting of the 3rd switching branches, the second input voltage VDD2 and the first storage capacitor C2
To the second storage capacitor C2 electric discharge after the voltage VDD1 superposition at two ends and anti-within the second setting time
Multiple charging and discharging finally gives the output voltage after expection boosting.Voltage can be shortened compared to Fig. 6
The conversion time, promote system work efficiency.
The foregoing is only preferred embodiment of the present invention, not thereby limit embodiments of the present invention and
Protection domain, to those skilled in the art, it should can appreciate that all utilization description of the invention
And the equivalent done by diagramatic content and the scheme obtained by obvious change, all should comprise
Within the scope of the present invention.
Claims (10)
1. the charge pump circuit of quick charge, it is characterised in that include,
One switch controlling signal produces circuit, for producing one group of switch controlling signal；
One regulating circuit being provided with storage capacitor, described regulating circuit includes,
One first Input voltage terminal, is connected with one first input voltage；
One second Input voltage terminal, is connected with one second input voltage；
One output voltage terminal, the voltage after exporting conversion；
Multiple switching branches, are controllably connected to described first Input voltage terminal, described second defeated
Enter voltage end, between described output voltage terminal and earth terminal；
Described switching branches under described switch controlling signal effect, combine turn-on and turn-off so that in
In first setting time, described first Input voltage terminal directly connects with described output voltage terminal, or in
In second setting time, described regulating circuit alternation is in charge mode and discharge mode, makes described
Second input voltage is supplied to described output voltage terminal after superposing with described first input voltage.
The charge pump circuit of quick charge the most according to claim 1, it is characterised in that described tune
Volt circuit includes:
First switching branches, is connected between described first Input voltage terminal and one first reference mode；
Second switch branch road, is connected between described first reference mode and described output voltage terminal；
3rd switching branches, is connected between described second Input voltage terminal and one second reference mode；
4th switching branches, is connected between described second reference mode and earth terminal；
Described first switching branches, described second switch branch road, described 3rd switching branches and the described 4th are opened
The control end closing branch road is connected with described switch controlling signal generation circuit respectively；
One first storage capacitor is connected between described first reference mode and described second reference mode；
One second storage capacitor is connected between described output voltage terminal and described earth terminal.
The charge pump circuit of quick charge the most according to claim 2, it is characterised in that described tune
Volt circuit when charge mode, described first switching branches and described 4th switching branches conducting, described the
Two switching branches and described 3rd switching branches disconnect, and described first Input voltage terminal is to described first energy storage
Electric capacity charges；Described regulating circuit is when discharge mode, and described first switching branches and the described 4th switchs
Branch road disconnects, described second switch branch road and described 3rd switching branches conducting, described second input voltage
The backward described second storage capacitor electric discharge with the voltage superposition at described first storage capacitor two ends.
The charge pump circuit of quick charge the most according to claim 1, it is characterised in that described in open
Close control signal generation circuit to include,
Comparator, believes from voltage feedback signal and a reference voltage of described output voltage terminal according to a sampling
Number produce a comparison signal；
Control electrical appliances for electric charge pump, produces multiple described switch controlling signal under the effect of described comparison signal.
The charge pump circuit of quick charge the most according to claim 1, it is characterised in that described
One input voltage is equal in magnitude with described second input voltage.
The charge pump circuit of quick charge the most according to claim 1, it is characterised in that described
One sets the time less than the described second setting time.
The charge pump circuit of quick charge the most according to claim 2, it is characterised in that described
Connecting one first P-channel metal-oxide-semiconductor in one switching branches, the grid of described first P-channel metal-oxide-semiconductor is even
Connecing one first control signal, substrate connects one second control signal, and other two terminal connects described respectively
First Input voltage terminal and described first reference mode.
The charge pump circuit of quick charge the most according to claim 2, it is characterised in that described
Connecting one second P-channel metal-oxide-semiconductor in two switching branches, the grid of described second P-channel metal-oxide-semiconductor is even
Connecing one the 3rd control signal, its substrate connects described second control signal, and other two terminal connects respectively
Described output voltage terminal and described first reference mode.
The charge pump circuit of quick charge the most according to claim 2, it is characterised in that described
Connecting one the 3rd P-channel metal-oxide-semiconductor in three switching branches, the grid of described 3rd P-channel metal-oxide-semiconductor is even
Connecing one the 4th control signal, its source electrode connects described second Input voltage terminal, and its drain electrode connects described second
Reference mode.
The charge pump circuit of quick charge the most according to claim 2, it is characterised in that described
Connecting a N-channel MOS pipe in four switching branches, the grid of described N-channel MOS pipe connects one the
Five control signals, its source electrode connects described second reference mode, and its drain electrode connects described earth terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149121.7A CN106160460A (en) | 2015-03-31 | 2015-03-31 | The charge pump circuit of quick charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510149121.7A CN106160460A (en) | 2015-03-31 | 2015-03-31 | The charge pump circuit of quick charge |
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| CN106160460A true CN106160460A (en) | 2016-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510149121.7A Pending CN106160460A (en) | 2015-03-31 | 2015-03-31 | The charge pump circuit of quick charge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889033A (en) * | 2017-05-22 | 2019-06-14 | 南京矽力杰半导体技术有限公司 | Isolated form Switching capacitors |
| CN111293882A (en) * | 2019-01-28 | 2020-06-16 | 展讯通信（上海）有限公司 | Step-up/step-down circuit and control method |
| CN111342652A (en) * | 2020-03-02 | 2020-06-26 | 启攀微电子（上海）有限公司 | Charge pump circuit structure with low standby power consumption |
| WO2022127290A1 (en) * | 2020-12-18 | 2022-06-23 | 苏州浪潮智能科技有限公司 | Signal correction circuit and server |
| CN114915163A (en) * | 2022-04-06 | 2022-08-16 | 杭州士兰微电子股份有限公司 | Charge pump circuit and control method thereof |
-
2015
- 2015-03-31 CN CN201510149121.7A patent/CN106160460A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889033A (en) * | 2017-05-22 | 2019-06-14 | 南京矽力杰半导体技术有限公司 | Isolated form Switching capacitors |
| CN111293882A (en) * | 2019-01-28 | 2020-06-16 | 展讯通信（上海）有限公司 | Step-up/step-down circuit and control method |
| CN111293882B (en) * | 2019-01-28 | 2021-07-23 | 展讯通信（上海）有限公司 | Buck-boost circuit and control method |
| US11799376B2 (en) | 2019-01-28 | 2023-10-24 | Spreadtrum Communications (Shanghai) Co., Ltd. | Buck-boost circuit and control method |
| CN111342652A (en) * | 2020-03-02 | 2020-06-26 | 启攀微电子（上海）有限公司 | Charge pump circuit structure with low standby power consumption |
| CN111342652B (en) * | 2020-03-02 | 2021-05-14 | 启攀微电子（上海）有限公司 | Charge pump circuit structure with low standby power consumption |
| WO2022127290A1 (en) * | 2020-12-18 | 2022-06-23 | 苏州浪潮智能科技有限公司 | Signal correction circuit and server |
| US11942949B2 (en) | 2020-12-18 | 2024-03-26 | Inspur Suzhou Intelligent Technology Co., Ltd. | Signal correction circuit and server |
| CN114915163A (en) * | 2022-04-06 | 2022-08-16 | 杭州士兰微电子股份有限公司 | Charge pump circuit and control method thereof |
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Application publication date: 20161123 |