CN201839201U - Charge pump circuit with voltage detection function - Google Patents
Charge pump circuit with voltage detection function Download PDFInfo
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- CN201839201U CN201839201U CN2010205760018U CN201020576001U CN201839201U CN 201839201 U CN201839201 U CN 201839201U CN 2010205760018 U CN2010205760018 U CN 2010205760018U CN 201020576001 U CN201020576001 U CN 201020576001U CN 201839201 U CN201839201 U CN 201839201U
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Abstract
The utility model discloses a charge pump circuit with voltage detection function. The charge pump circuit comprises a charge pump, a voltage detection module and an oscillating circuit; the oscillating circuit is connected with the charge pump and the voltage detection module respectively; the voltage detection module is used for detecting the output voltage; and the circuit with voltage detection function outputs a low-level signal when the output voltage is lower than the first threshold and outputs a high-level signal when the output voltage is higher than the second threshold. The charge pump provided by the utility model prolongs the service life of a dry cell, thereby enabling the electric energy stored in the dry cell to be fully utilized. The charge pump circuit has the advantages of diminution of expenditure, green energy conservation and reduction of damage to the environment.
Description
Technical field
The utility model belongs to electronic technology field, relates to a kind of charge pump, relates in particular to a kind of charge pump circuit of detection with voltage.
Background technology
Please refer to Fig. 1 to Fig. 3, in the equipment that a lot of employing dry cells are used, along with the release of electric charge, the voltage of dry cell can descend gradually.
Fig. 1 is No. 5 battery (6) 10 Europe continuous discharge schematic diagrames of super despot (GP) alkalescence.Among Fig. 1, putting a resistance is 10 Europe, and termination voltage is 0.9V.
Fig. 2 inspires confidence in No. 5 (1) 3.9 Europe continuous discharge schematic diagrames of energy-gathering ring for south.Among Fig. 2, putting a resistance is 3.9 Europe, and termination voltage is 0.8V.
Fig. 3 is No. 5 battery (1) 3.9 Europe continuous discharge schematic diagrames of two deer alkalescence.Among Fig. 3, putting a resistance is 3.9 Europe, and termination voltage is 0.8V.
The new dry cell of one joint, voltage is about 1.5V, and when battery had been put half electric charge, voltage will drop to about 1.2V.In a lot of the application, cell voltage is lower than the reliability service that 1.2V just can not guarantee system, must more renew battery.Will inevitably cause battery useful life short like this, expense is big, and the energy content of battery do not discharged fully, and promptly waste and battery also can damage natural environment.
The utility model content
Technical problem to be solved in the utility model is: a kind of charge pump circuit of detection with voltage is provided, can prolongs the useful life of dry cell.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of charge pump circuit of detection with voltage, described charge pump circuit comprises: charge pump, voltage detection module, oscillating circuit;
Described oscillating circuit connects charge pump, voltage detection module respectively;
Described voltage detection module is in order to detect output voltage; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value.
As a kind of preferred version of the present utility model, described charge pump comprises diode D1, D2, D3, pump capacitor C 2, output capacitance C3;
Described voltage detection module detects the output voltage V DD of output capacitance C3, and testing result is exported by described oscillating circuit; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value; During the voltage detecting circuit output low level, oscillating circuit output square wave; Voltage detecting circuit output high level, DC level of oscillating circuit output;
First end of described pump capacitor C 2 is by the positive pole of diode D2 connection dry cell, and second end of pump capacitor C 2 connects described oscillating circuit;
First end of described output capacitance C3 is by the positive pole of diode D1 connection dry cell, and first end of output capacitance C3 is by the positive pole of diode D3, D2 connection dry cell, and second end of output capacitance C3 connects the negative pole of dry cell;
Described pump capacitor C 2 perhaps exports the electric charge in the pump capacitor C 2 among the output capacitance C3 to according to the square wave charging of oscillating circuit output.
As a kind of preferred version of the present utility model, described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1;
The output of described voltage detection module inserts the input pin 12,13 of logical device UD, the output pin 11 of logical device UD connects the input pin 10 of logical device UC, the output pin 8 of logical device UC connects the input pin 4,5 of logical device UB, the output pin 6 of logical device UB connects the input pin 1,2 of logical device UA, and the output pin 3 of logical device UA connects second end of pump capacitor C 2;
The output pin 6 of logical device UB is by the input pin 9 of capacitor C 6 connection logical device UC, and the output pin 6 of logical device UB connects the output pin 8 of logical device UC by capacitor C 6, resistance R 1.
As a kind of preferred version of the present utility model, described logical device UA/UB/UC/UD is a NAND gate.
As a kind of preferred version of the present utility model, described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1; Described logical device UA/UB/UC/UD be NAND gate, NOR gate, with or door in one.
As a kind of preferred version of the present utility model, described logical device UA, UB, UC, UD constitute a chip jointly, perhaps not on a chip.
As a kind of preferred version of the present utility model, the positive pole of described diode D1, D2 connects the positive pole of dry cell, first end of described pump capacitor C 2 connects the negative pole of diode D2, the positive pole of diode D3, and first end of described output capacitance C3 connects the negative pole of diode D1, the negative pole of diode D3.
The beneficial effects of the utility model are: the charge pump that the utility model proposes, prolonged useful life of dry cell, and make the electric energy that stores in the dry cell be fully utilized; Lower expense, green energy conservation; Reduction is to environment damage.
Description of drawings
Fig. 1 is No. 5 battery (6) 10 Europe continuous discharge schematic diagrames of super despot (GP) alkalescence.
Fig. 2 inspires confidence in No. 5 (1) 3.9 Europe continuous discharge schematic diagrames of energy-gathering ring for south.
Fig. 3 is No. 5 battery (1) 3.9 Europe continuous discharge schematic diagrames of two deer alkalescence.
Fig. 4 is the composition schematic diagram of the utility model charge pump.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Embodiment one
See also Fig. 4, the utility model has disclosed a kind of charge pump, and described charge pump comprises: diode D1, D2, D3, pump capacitor C 2, output capacitance C3, voltage detection module, oscillating circuit.
Described voltage detection module detects the output voltage V DD of output capacitance C3, and testing result is exported a square wave by described oscillating circuit; First end of described pump capacitor C 2 is by the positive pole of diode D2 connection dry cell, and second end of pump capacitor C 2 connects described oscillating circuit; First end of described output capacitance C3 is by the positive pole of diode D1 connection dry cell, and first end of output capacitance C3 is by the positive pole of diode D3, D2 connection dry cell, and second end of output capacitance C3 connects the negative pole of dry cell; Described pump capacitor C 2 perhaps exports the electric charge in the pump capacitor C 2 among the output capacitance C3 to according to the square wave charging of oscillating circuit output.
Particularly, the positive pole of described diode D1, D2 connects the positive pole of dry cell, and first end of described pump capacitor C 2 connects the negative pole of diode D2, the positive pole of diode D3, and first end of described output capacitance C3 connects the negative pole of diode D1, the negative pole of diode D3.
In the present embodiment, described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1; The output of described voltage detection module inserts the input pin 12,13 of logical device UD, the output pin 11 of logical device UD connects the input pin 10 of logical device UC, the output pin 8 of logical device UC connects the input pin 4,5 of logical device UB, the output pin 6 of logical device UB connects the input pin 1,2 of logical device UA, and the output pin 3 of logical device UA connects second end of pump capacitor C 2; The output pin 6 of logical device UB is by the input pin 9 of capacitor C 6 connection logical device UC, and the output pin 6 of logical device UB connects the output pin 8 of logical device UC by capacitor C 6, resistance R 1.
Described logical device UA/UB/UC/UD is a NAND gate.Described logical device UA, UB, UC, UD constitute a chip jointly, perhaps not on a chip.
In addition, described logical device UA/UB/UC/UD can also be NOR gate, same or door.
In sum, the charge pump that the utility model proposes has prolonged useful life of dry cell, makes the electric energy that stores in the dry cell be fully utilized; Lower expense, green energy conservation; Reduction is to environment damage.
Embodiment two
A kind of charge pump circuit of detection with voltage, described charge pump circuit comprises: charge pump, voltage detection module, oscillating circuit; Described oscillating circuit connects charge pump, voltage detection module respectively; Described voltage detection module is in order to detect output voltage; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value.
In the present embodiment, described charge pump comprises diode D1, D2, D3, pump capacitor C 2, output capacitance C3; Described control electrical appliances for electric charge pump is an oscillating circuit; Described voltage detection module detects the output voltage V DD of output capacitance C3, and testing result is exported by described oscillating circuit; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value; During the voltage detecting circuit output low level, oscillating circuit output square wave; Voltage detecting circuit output high level, direct current high level of oscillating circuit output.
First end of described pump capacitor C 2 is by the positive pole of diode D2 connection dry cell, and second end of pump capacitor C 2 connects described oscillating circuit; First end of described output capacitance C3 is by the positive pole of diode D1 connection dry cell, and first end of output capacitance C3 is by the positive pole of diode D3, D2 connection dry cell, and second end of output capacitance C3 connects the negative pole of dry cell; Described pump capacitor C 2 perhaps exports the electric charge in the pump capacitor C 2 among the output capacitance C3 to according to the square wave charging of oscillating circuit output.
Particularly, the positive pole of described diode D1, D2 connects the positive pole of dry cell, and first end of described pump capacitor C 2 connects the negative pole of diode D2, the positive pole of diode D3, and first end of described output capacitance C3 connects the negative pole of diode D1, the negative pole of diode D3.
Described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1; The output of described voltage detection module inserts the input pin 12,13 of logical device UD, the output pin 11 of logical device UD connects the input pin 10 of logical device UC, the output pin 8 of logical device UC connects the input pin 4,5 of logical device UB, the output pin 6 of logical device UB connects the input pin 1,2 of logical device UA, and the output pin 3 of logical device UA connects second end of pump capacitor C 2; The output pin 6 of logical device UB is by the input pin 9 of capacitor C 6 connection logical device UC, and the output pin 6 of logical device UB connects the output pin 8 of logical device UC by capacitor C 6, resistance R 1.
Embodiment three
Present embodiment adopts a kind of circuit structure of charge pump of detection module with voltage, by charge pump lifting output voltage to satisfy system's needs; The overvoltage detection module detects output voltage, when output voltage is lower than threshold value-time, starts charge pump, when output voltage is higher than threshold value+time, stops charge pump, guarantees that with this output voltage is in certain scope.
See also Fig. 4, U4 is a voltage detection module in the circuit, detects vdd voltage.Threshold value+and threshold value-be that U4 is built-in.If VDD is lower than threshold value-time, output low level; If VDD is higher than threshold value+time, the output high level.
C2 is a pump electric capacity, and when U8A was output as low level, dry cell charged to C2 by D2, and when U8A is output as when high, the C2 capacitance voltage is high too, oppositely not conducting of D2, and the D3 conducting outputs to the electric charge among the C2 among the C3.
C3 is an output filter capacitor, and C3 stores from the electric capacity of pump electric capacity input, uses for system.
U8 (comprising U8A, U8B, U8C, U8D), R1, C6 constitutes an oscillating circuit, by square wave of U8 output.
D1 is connected the anode and the output capacitance C3 anode of dry cell.
System work process is as follows:
When 1, system started working, at first dry cell charged to C3 by two paths, and article one is directly charged to C3 by D1, second, and by pump circuit D2, D3 charges to C3.
2, voltage detection module detection output voltage V DD is lower than threshold value-time, output low level.
3,12, the 13 pin input low levels of U8D, exporting 11 pin is high level.
4, the 10 pin position high level of U8C suppose that 9 pin also are low level, then export 8 pin for high; Owing to connect between resistance R 1,8 pin and 6 pin between 9 pin and 8 pin C6 is arranged, 8 pin just have electric current and flow to C6 through R1, and C6 voltage slowly rises, and after the C6 current potential reached certain value, 9 pin transferred high level to from low level, export 8 pin step-downs this moment; Because this moment, 6 pin position high level caused the C6 terminal voltage that links to each other with R1 higher, C6 discharges to 8 pin by R1, and after C6 voltage dropped to certain value, 9 pin transferred low level to from high level, so realized the vibration of 8 pin current potentials.
5,4, the 5 pin position high level of U8B, exporting 6 pin is low level; 4, the 5 pin position low levels of U8B, exporting 6 pin is high level.
6,1, the 2 pin input low level of U8A is then exported 3 pin position high level; 1, the 2 pin input high level of U8A is then exported 3 pin position low levels.
7, because the vibration of 8 pin causes the U83 pin to produce the square wave with built-in oscillation cycle.This cycle of oscillation is relevant with the value of C6 and R1.
8, because C2 one terminal voltage is the square wave of vibration, so C2 and D2, the terminal potential that D3 links to each other is fluctuated, and when low, dry cell charges to C2 by D2; When high, C2 charges to C3 by D3.Play the function of a carrying with this C2,, transfer on the high potential output capacitance C3 the electric energy of electronegative potential dry cell.
Here description of the present utility model and application are illustrative, are not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change are possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that under the situation that does not break away from spirit of the present utility model or substantive characteristics, and the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts.Under the situation that does not break away from the utility model scope and spirit, can carry out other distortion and change here to disclosed embodiment.
Claims (7)
1. the charge pump circuit of a detection with voltage is characterized in that, described charge pump circuit comprises: charge pump, voltage detection module, oscillating circuit;
Described oscillating circuit connects charge pump, voltage detection module respectively;
Described voltage detection module is in order to detect output voltage; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value.
2. the charge pump circuit of detection with voltage according to claim 1 is characterized in that:
Described charge pump comprises diode D1, D2, D3, pump capacitor C 2, output capacitance C3;
Described voltage detection module detects the output voltage V DD of output capacitance C3, and testing result is exported by described oscillating circuit; Described voltage detecting circuit output low level when output voltage is lower than first threshold, output high level when output voltage is higher than second threshold value; During the voltage detecting circuit output low level, oscillating circuit output square wave; Voltage detecting circuit output high level, DC level of oscillating circuit output;
First end of described pump capacitor C 2 is by the positive pole of diode D2 connection dry cell, and second end of pump capacitor C 2 connects described oscillating circuit;
First end of described output capacitance C3 is by the positive pole of diode D1 connection dry cell, and first end of output capacitance C3 is by the positive pole of diode D3, D2 connection dry cell, and second end of output capacitance C3 connects the negative pole of dry cell;
Described pump capacitor C 2 perhaps exports the electric charge in the pump capacitor C 2 among the output capacitance C3 to according to the square wave charging of oscillating circuit output.
3. the charge pump circuit of detection with voltage according to claim 2 is characterized in that:
Described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1;
The output of described voltage detection module inserts the input pin 12,13 of logical device UD, the output pin 11 of logical device UD connects the input pin 10 of logical device UC, the output pin 8 of logical device UC connects the input pin 4,5 of logical device UB, the output pin 6 of logical device UB connects the input pin 1,2 of logical device UA, and the output pin 3 of logical device UA connects second end of pump capacitor C 2;
The output pin 6 of logical device UB is by the input pin 9 of capacitor C 6 connection logical device UC, and the output pin 6 of logical device UB connects the output pin 8 of logical device UC by capacitor C 6, resistance R 1.
4. the charge pump circuit of detection with voltage according to claim 3, it is characterized in that: described logical device UA/UB/UC/UD is a NAND gate.
5. the charge pump circuit of detection with voltage according to claim 2 is characterized in that:
Described oscillating circuit comprises logical device UA, UB, UC, UD, capacitor C 6, resistance R 1;
Described logical device UA/UB/UC/UD be NAND gate, NOR gate, with or door in one.
6. according to the charge pump circuit of the described detection with voltage of one of claim 3 to 5, it is characterized in that:
Described logical device UA, UB, UC, UD constitute a chip jointly, perhaps not on a chip.
7. the charge pump circuit of detection with voltage according to claim 2 is characterized in that:
The positive pole of described diode D1, D2 connects the positive pole of dry cell, and first end of described pump capacitor C 2 connects the negative pole of diode D2, the positive pole of diode D3, and first end of described output capacitance C3 connects the negative pole of diode D1, the negative pole of diode D3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205760018U CN201839201U (en) | 2010-10-25 | 2010-10-25 | Charge pump circuit with voltage detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205760018U CN201839201U (en) | 2010-10-25 | 2010-10-25 | Charge pump circuit with voltage detection function |
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| Publication Number | Publication Date |
|---|---|
| CN201839201U true CN201839201U (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205760018U Expired - Lifetime CN201839201U (en) | 2010-10-25 | 2010-10-25 | Charge pump circuit with voltage detection function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130585A (en) * | 2010-10-25 | 2011-07-20 | 上海复展照明科技有限公司 | Charge pump circuit |
| CN112104226A (en) * | 2020-11-18 | 2020-12-18 | 深圳市芯天下技术有限公司 | Wide-voltage low-power consumption strong-driving-capability pump circuit and nonvolatile memory |
| CN114189145A (en) * | 2020-09-14 | 2022-03-15 | 瑞昱半导体股份有限公司 | Voltage modulation circuit and method thereof |
-
2010
- 2010-10-25 CN CN2010205760018U patent/CN201839201U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102130585A (en) * | 2010-10-25 | 2011-07-20 | 上海复展照明科技有限公司 | Charge pump circuit |
| CN114189145A (en) * | 2020-09-14 | 2022-03-15 | 瑞昱半导体股份有限公司 | Voltage modulation circuit and method thereof |
| CN112104226A (en) * | 2020-11-18 | 2020-12-18 | 深圳市芯天下技术有限公司 | Wide-voltage low-power consumption strong-driving-capability pump circuit and nonvolatile memory |
| CN112104226B (en) * | 2020-11-18 | 2021-02-23 | 深圳市芯天下技术有限公司 | Wide-voltage low-power consumption strong-driving-capability pump circuit and nonvolatile memory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ANHENG GAS TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANGHAI FUZHAN LIGHTING SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20120221 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120221 Address after: 200433 room 335, No. 10010, National Road, Shanghai, Yangpu District Patentee after: SHANGHAI ANHENG GAS TECHNOLOGY Co.,Ltd. Address before: 200433 room 335, No. 10010, National Road, Shanghai, Yangpu District Patentee before: Shanghai Fuzhan Lighting Technology Co.,Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 200433 Shanghai City, Yangpu District National Road No. 323 room 302-12 Patentee after: SHANGHAI XINGSHANG SOFTWARE TECHNOLOGY Co.,Ltd. Address before: 200433 room 335, No. 10010, National Road, Shanghai, Yangpu District Patentee before: Shanghai Anheng Gas Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20160308 Address after: 200433 room 323, No. 1102-153, National Road, Shanghai, Yangpu District Patentee after: SHANGHAI HAIYAO HUIZHI INFORMATION TECHNOLOGY CO.,LTD. Address before: 200433 Shanghai City, Yangpu District National Road No. 323 room 302-12 Patentee before: SHANGHAI XINGSHANG SOFTWARE TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |