CN202111908U - LED drive circuit possessing capacitance voltage-multiplying effect - Google Patents
LED drive circuit possessing capacitance voltage-multiplying effect Download PDFInfo
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- CN202111908U CN202111908U CN2011202133211U CN201120213321U CN202111908U CN 202111908 U CN202111908 U CN 202111908U CN 2011202133211 U CN2011202133211 U CN 2011202133211U CN 201120213321 U CN201120213321 U CN 201120213321U CN 202111908 U CN202111908 U CN 202111908U
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- energy storage
- capacitance voltage
- capacitance
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Abstract
The utility model relates to the field of circuit technology, and specially relates to an LED drive circuit possessing capacitance voltage-multiplying effect, including an LED load, an input module, an output module, a main control IC, an inductance energy storage module and at least a capacitance voltage-multiplying module. The inductance energy storage module is respectively electrically connected with the input module, the main control IC and the capacitance voltage-multiplying module. The output module is respectively electrically connected with the capacitance voltage-multiplying module, the LED load and the main control IC. The capacitance voltage-multiplying module includes an energy storage capacitor (C1), a voltage increase capacitor (C2), a capacitance energy storage diode (D1), an energy storage capacitance discharge diode (D2), an output rectification isolating diode (D3) and a main control power switch tube (Q3). The utility model provides an LED drive circuit possessing capacitance voltage-multiplying effect, wherein the structure is simple, and the voltage-multiplying effect is good.
Description
Technical field
The utility model relates to the circuit engineering field, specifically has the led drive circuit of capacitance voltage-multiplying.
Background technology
General continuous current pattern booster circuit, in order to reach the purpose of protection, the maximum empty temporarily of master control IC can be restricted than all; Thereby also limited the multiple that boosts of booster circuit; On the other hand, bigger duty ratio output also will make the output voltage electric current under adverse circumstances, become and instability.Because in general booster circuit; Too high output voltage means the output duty cycle that need provide higher; And use higher withstand voltage main MOSFET and rectifying tube also to mean higher Material Cost; Utilize transformer to boost and to reach the purpose that DC changes the DC high output voltage equally, but its cost is also incomparable with common booster circuit.
The utility model content
The utility model provides a kind of simple in structure, led drive circuit with capacitance voltage-multiplying that multiplication of voltage is effective.
The utility model is realized through following technical proposals:
Led drive circuit with capacitance voltage-multiplying; Comprise LED load, input module, output module, master control IC, inductive energy storage module and at least one capacitance voltage-multiplying module; Said inductive energy storage module is electrically connected with input module, master control IC and capacitance voltage-multiplying module respectively; Said output module is electrically connected with capacitance voltage-multiplying module, LED load and master control IC respectively; Said capacitance voltage-multiplying module comprises storage capacitor (C1), boost capacitor (C2), capacitance energy storage diode (D1), storage capacitor discharge diode (D2), output rectification isolating diode (D3) and master control power switch pipe (Q3); Said capacitance energy storage diode (D1), storage capacitor discharge diode (D2) and output rectification isolating diode (D3) are electrically connected successively; Said boost capacitor (C2) is located between the positive pole and storage capacitor discharge diode (D2) negative pole of said capacitance energy storage diode (D1), and said storage capacitor (C1) is located between the positive pole and ground of said storage capacitor discharge diode (D2), and the drain electrode of said master control power switch pipe (Q3) is electrically connected with DRV; Its source electrode is connected with the positive electrical of capacitance energy storage diode (D1), its grounded-grid.
Said inductive energy storage module is energy storage inductor (L1), and the one of which end is electrically connected with input module, and the other end is electrically connected with boost capacitor (C2).
Said input module comprises electric capacity (C3), and its positive pole is electrically connected its minus earth with VIN.
Said output module comprises electric capacity (C4), resistance (R1) and resistance (R2); The anodal negative electricity with output rectification isolating diode (D3) of said electric capacity (C4) is connected; Its minus earth; Said resistance (R1) and resistance (R2) are in series, and said resistance (R1) end is electrically connected with VOUT, said resistance (R2) end ground connection.
Said led drive circuit with capacitance voltage-multiplying also comprises constant current/constant voltage module and feedback protection module, and is located between output module and the master control IC.
The beneficial effect that the utility model brought is:
In the utility model; Said led drive circuit with capacitance voltage-multiplying has adopted the capacitance voltage-multiplying rectification circuit; Higher voltage only output end just can occur, only be required to be half of output voltage and the shutoff of main MOSFET is withstand voltage with rectifying tube reverse withstand voltage, more efficient use the power output capacity of above device; Not only reduce output duty cycle and the Material Cost of MOSFET, also improved the general safety coefficient of circuit simultaneously indirectly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further explain.
Fig. 1 is the said general diagram with led drive circuit of capacitance voltage-multiplying of the utility model;
Fig. 2 is the said block diagram with led drive circuit of capacitance voltage-multiplying of the utility model;
Fig. 3 is the said sketch map with led drive circuit of capacitance voltage-multiplying of the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further to detail:
As the said embodiment of the utility model with led drive circuit of capacitance voltage-multiplying; Like Fig. 1, Fig. 2 and shown in Figure 3; Comprise LED load, input module, output module, master control IC, inductive energy storage module and at least one capacitance voltage-multiplying module; Said inductive energy storage module is electrically connected with input module, master control IC and capacitance voltage-multiplying module respectively; Said output module is electrically connected with capacitance voltage-multiplying module, LED load and master control IC respectively; Said capacitance voltage-multiplying module comprises storage capacitor (C1), boost capacitor (C2), capacitance energy storage diode (D1), storage capacitor discharge diode (D2), output rectification isolating diode (D3) and master control power switch pipe (Q3); Said capacitance energy storage diode (D1), storage capacitor discharge diode (D2) and output rectification isolating diode (D3) are electrically connected successively; Said boost capacitor (C2) is located between the positive pole and storage capacitor discharge diode (D2) negative pole of said capacitance energy storage diode (D1), and said storage capacitor (C1) is located between the positive pole and ground of said storage capacitor discharge diode (D2), and the drain electrode of said master control power switch pipe (Q3) is electrically connected with DRV; Its source electrode is connected with the positive electrical of capacitance energy storage diode (D1), its grounded-grid.
In the present embodiment, said inductive energy storage module is energy storage inductor (L1), and the one of which end is electrically connected with input module, and the other end is electrically connected with boost capacitor (C2).During energy storage inductor (L1) energy storage; Storage capacitor (C1) releases energy to boost capacitor (C2); Energy storage inductor (L1) and boost capacitor provide energy to load simultaneously during energy storage inductor (L1) releases energy, and output voltage is the summation of energy storage inductor (L1) voltage and output voltage and boost capacitor (C2) voltage.
In the present embodiment, said input module comprises electric capacity (C3), and its positive pole is electrically connected its minus earth with VIN.
In the present embodiment; Said output module comprises electric capacity (C4), resistance (R1) and resistance (R2); The anodal negative electricity with output rectification isolating diode (D3) of said electric capacity (C4) is connected, its minus earth, and said resistance (R1) and resistance (R2) are in series; Said resistance (R1) end is electrically connected with VOUT, said resistance (R2) end ground connection.
In the present embodiment, said led drive circuit with capacitance voltage-multiplying also comprises constant current/constant voltage module and feedback protection module, and is located between output module and the master control IC.
When master control power switch pipe (Q3) conducting; Energy storage inductor (L1) voltage is the voltage of Vin; Energy storage inductor this moment (L1) is for section between energy storage, and when master control power switch pipe (Q3) ended, energy storage inductor (L1) charged to storage capacitor (C1) through capacitance energy storage diode (D1); Also release energy to the LED load simultaneously, at this moment output voltage V out=U through boost capacitor (C2) and output rectification isolating diode (D3)
C1+ U
C2Since master control power switch pipe (Q3) by the time, removing energy storage inductor (L1) and Vin is providing the electric energy to the LED load, boost capacitor (C2) also is being compelled to the LED load electric energy to be provided; Therefore the electric energy in master control power switch pipe (Q3) boost capacitor (C2) between the off period is reducing; When master control power switch pipe (Q3) once more during conducting because boost capacitor (C2) end is equivalent to ground connection, this moment, storage capacitor (C1) and boost capacitor (C2) were equivalent to parallel connection, and the voltage of storage capacitor (C1) is greater than the voltage of boost capacitor (C2); At this moment storage capacitor (C1) will discharge to boost capacitor (C2) through storage capacitor discharge diode (D2); Voltage up to storage capacitor (C1) and boost capacitor (C2) equates that when master control power switch pipe (Q3) ended once more, the voltage of capacitance energy storage electric capacity (C1) equaled energy storage inductor (L1) voltage (U
L1) add input voltage vin,, i.e. U
C1=U
L1+ Vin is because U
C1=U
C2So, Vout=U
C1+ U
C2=2U
C1=2 (vin+U
L1), thereby reach the purpose of capacitance voltage-multiplying.
Certainly, in basic capacitance voltage multiplier circuit, utilize its basic principle can increase the purpose that multistage capacitance voltage multiplier circuit reaches the output of N multiplication of voltage.So, also all within the utility model protection range, give unnecessary details no longer one by one here.
Claims (5)
1. the led drive circuit that has capacitance voltage-multiplying; It is characterized in that comprising LED load, input module, output module, master control IC, inductive energy storage module and at least one capacitance voltage-multiplying module; Said inductive energy storage module is electrically connected with input module, master control IC and capacitance voltage-multiplying module respectively; Said output module is electrically connected with capacitance voltage-multiplying module, LED load and master control IC respectively; Said capacitance voltage-multiplying module comprises storage capacitor (C1), boost capacitor (C2), capacitance energy storage diode (D1), storage capacitor discharge diode (D2), output rectification isolating diode (D3) and master control power switch pipe (Q3); Said capacitance energy storage diode (D1), storage capacitor discharge diode (D2) and output rectification isolating diode (D3) are electrically connected successively; Said boost capacitor (C2) is located between the positive pole and storage capacitor discharge diode (D2) negative pole of said capacitance energy storage diode (D1), and said storage capacitor (C1) is located between the positive pole and ground of said storage capacitor discharge diode (D2), and the drain electrode of said master control power switch pipe (Q3) is electrically connected with DRV; Its source electrode is connected with the positive electrical of capacitance energy storage diode (D1), its grounded-grid.
2. the led drive circuit with capacitance voltage-multiplying as claimed in claim 1 is characterized in that said inductive energy storage module is energy storage inductor (L1), and the one of which end is electrically connected with input module, and the other end is electrically connected with boost capacitor (C2).
3. the led drive circuit with capacitance voltage-multiplying as claimed in claim 1 is characterized in that said input module comprises electric capacity (C3), and its positive pole is electrically connected its minus earth with VIN.
4. the led drive circuit with capacitance voltage-multiplying as claimed in claim 1; It is characterized in that said output module comprises electric capacity (C4), resistance (R1) and resistance (R2); The anodal negative electricity with output rectification isolating diode (D3) of said electric capacity (C4) is connected, its minus earth, and said resistance (R1) and resistance (R2) are in series; Said resistance (R1) end is electrically connected with VOUT, said resistance (R2) end ground connection.
5. like each described led drive circuit of claim 1-4, it is characterized in that said led drive circuit with capacitance voltage-multiplying also comprises constant current/constant voltage module and feedback protection module, and be located between output module and the master control IC with capacitance voltage-multiplying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202133211U CN202111908U (en) | 2011-06-22 | 2011-06-22 | LED drive circuit possessing capacitance voltage-multiplying effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202133211U CN202111908U (en) | 2011-06-22 | 2011-06-22 | LED drive circuit possessing capacitance voltage-multiplying effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111908U true CN202111908U (en) | 2012-01-11 |
Family
ID=45437357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202133211U Expired - Fee Related CN202111908U (en) | 2011-06-22 | 2011-06-22 | LED drive circuit possessing capacitance voltage-multiplying effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111908U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014110965A1 (en) * | 2013-01-17 | 2014-07-24 | 北京大风时代科技有限责任公司 | Power-type voltage-multiplying driving circuit and electric nail gun using power-type voltage-multiplying driving circuit |
| CN110224589A (en) * | 2019-05-14 | 2019-09-10 | 厦门银固美能源科技有限公司 | Power boost device based on the series connection of multilevel energy storage unit |
-
2011
- 2011-06-22 CN CN2011202133211U patent/CN202111908U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014110965A1 (en) * | 2013-01-17 | 2014-07-24 | 北京大风时代科技有限责任公司 | Power-type voltage-multiplying driving circuit and electric nail gun using power-type voltage-multiplying driving circuit |
| US20160043656A1 (en) * | 2013-01-17 | 2016-02-11 | Beijing Dafeng Technology Ltd. | Power-type voltage-multiplying driving circuit and electric nail gun using power-type voltage-multiplying driving circuit |
| CN110224589A (en) * | 2019-05-14 | 2019-09-10 | 厦门银固美能源科技有限公司 | Power boost device based on the series connection of multilevel energy storage unit |
| CN110224589B (en) * | 2019-05-14 | 2024-05-28 | 厦门银固美能源科技有限公司 | Power supply boosting device based on multistage energy storage unit series connection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TIANTONG PRECISION POWER TECHNOLOGY CO., LTD. Free format text: FORMER NAME: TDG ZHEJIANG TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee after: TDG TECHNOLOGY ZHEJIANG CO., LTD. Address before: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee before: TDG Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20170622 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |