CN204190998U - A kind of great power LED drive system - Google Patents
A kind of great power LED drive system Download PDFInfo
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- CN204190998U CN204190998U CN201420635384.XU CN201420635384U CN204190998U CN 204190998 U CN204190998 U CN 204190998U CN 201420635384 U CN201420635384 U CN 201420635384U CN 204190998 U CN204190998 U CN 204190998U
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Abstract
The utility model discloses a kind of great power LED drive system, mainly comprise current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, and the voltage boosting and stabilizing circuit being arranged on drive circuit output.This voltage boosting and stabilizing circuit by the process chip U2 playing main process effect, field effect transistor Q1, resistance R7, resistance R8, resistance 9, electric capacity C5, electric capacity C6, and electric capacity C7 forms.The utility model is provided with voltage boosting and stabilizing circuit, and the power that voltage makes system export after voltage boosting and stabilizing circuit process raises, and can maintain stable state, thus meets the use of LED.
Description
Technical field
The utility model relates to a kind of drive system, specifically refers to a kind of great power LED drive system.
Background technology
LED, as novel energy-conserving light source, with its environmental protection, the feature such as energy-conservation, the life-span is long, volume is little, is extensively received by people and adopts.Due to the semiconductor device that LED is characteristic sensitivity, have negative temperature characteristic again, therefore in application process, LED drive circuit plays considerable effect for impelling LED to be in stable, reliable operating state.
Along with people's living standard constantly improves, no matter have higher requirement to LED brightness and energy consumption at home or in shop, namely people need, while improving LED brightness further, to need LED to have lower energy consumption.So people just have higher requirement to LED lamp drive circuit.But the power limited of traditional LED drive circuit that current people adopt, not can solve the pressing issues of LED high brightness, low-power consumption.
Utility model content
It is reasonable not that the purpose of this utility model is to overcome the design of current LED lamp drive circuit, the defect of LED high brightness, low-power consumption can not be solved very well, there is provided a kind of structure simple, reasonable in design, effectively can realize the LED high-power drive circuit of LED high brightness, low-power consumption.
The purpose of this utility model is achieved through the following technical solutions: a kind of great power LED drive system, mainly comprise current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, meanwhile, is also provided with voltage boosting and stabilizing circuit at drive circuit output, described voltage boosting and stabilizing circuit is by process chip U2, field effect transistor Q1, one end is connected with the VIN pin of process chip U2, the resistance R7 that the other end is then connected with the RT pin of process chip U2, one end is connected with the SS pin of process chip U2, the electric capacity C5 of other end ground connection, one end is connected with the COU pin of process chip U2, the electric capacity C6 that the other end is then connected with the FB pin of process chip U2, one end is connected with the CS pin of process chip U2, the resistance R8 that the other end is then connected with the source electrode of field effect transistor Q1, one end is connected with the VCC pin of process chip U2, the electric capacity C7 of other end ground connection, and one end is connected with the FB pin of process chip U2, the resistance R9 of other end ground connection forms, the VIN pin of described process chip U2 is all connected with drive circuit with UVLO pin, and its GND pin ground connection, its OUT pin is then connected with the grid of field effect transistor Q1.
Described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected on two outputs of diode bridge rectifier U.
Described drive circuit is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R2 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the SW pin of driving chip U1, the other end is the resistance R5 of ground connection after resistance R6 then, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOURCE pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel, as an output of circuit while the N pole of described diode D1 is connected with the positive pole of electric capacity C2, its P pole is then connected with DRAIN2 pin with the DRAIN1 pin of driving chip U1 simultaneously, the V33 pin of driving chip U1 is connected with its LN pin, GND pin ground connection, and SW pin is then connected with the VIN pin of process chip U2.
For guaranteeing result of use, described process chip U2 preferentially adopts LM5020 cake core to realize, and driving chip U1 then preferentially adopts MAX16840 cake core to realize.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) overall structure of the present utility model is very simple, not only makes and very easy to use, and stablizes
(2) the utility model and traditional LED drive circuit phase specific output is more powerful, thus avoids LED bright not because of underpower, and power output can carry more LED more greatly, meets people's life requirement.
(3) LM5020 process chip is used in the utility model buying, while increase power output, can't increase the energy consumption of input, cost-saving.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, the utility model mainly comprises current rectifying and wave filtering circuit, the drive circuit be connected with rectification filter circuit output end, and the voltage boosting and stabilizing circuit being arranged on drive circuit output.
This voltage boosting and stabilizing circuit is emphasis of the present utility model, can be realized the power output of amplification system by voltage boosting and stabilizing circuit, and raise after voltage very steady.Voltage boosting and stabilizing circuit by the process chip U2 playing main process effect, field effect transistor Q1, resistance R7, resistance R8, resistance 9, electric capacity C5, electric capacity C6, and electric capacity C7 forms.During connection, one end of resistance R7 is connected with the VIN pin of process chip U2, the other end is then connected with the RT pin of process chip U2, one end of electric capacity C5 is connected with the SS pin of process chip U2, other end ground connection, one end of electric capacity C6 is connected with the COU pin of process chip U2, the other end is then connected with the FB pin of process chip U2, one end of resistance R8 is connected with the CS pin of process chip U2, the other end is then connected with the source electrode of field effect transistor Q1, one end of electric capacity C7 is connected with the VCC pin of process chip U2, other end ground connection, one end of resistance R9 is connected with the FB pin of process chip U2, other end ground connection.The VIN pin of this process chip U2 is all connected with drive circuit with UVLO pin, GND pin ground connection, and its OUT pin is then connected with the grid of field effect transistor Q1.In order to better ensure implementation result, described process chip U2 preferentially selects LM5020 cake core to realize.
Due to civil power input is alternating voltage, and therefore, the utility model is provided with current rectifying and wave filtering circuit, civil power can be become smooth-going direct current.This current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form.Wherein, fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected on two outputs of diode bridge rectifier U.
Drive circuit plays the driving effect of whole system, it is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R2 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the SW pin of driving chip U1, the other end is the resistance R5 of ground connection after resistance R6 then, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOURCE pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel.As an output of circuit while the N pole of described diode D1 is connected with the positive pole of electric capacity C2, its P pole is then connected with DRAIN2 pin with the DRAIN1 pin of driving chip U1 simultaneously; The V33 pin of driving chip U1 is connected with its LN pin, GND pin ground connection, and SW pin is then connected with the VIN pin of process chip U2.The power that the voltage that drive circuit exports makes system export after voltage boosting and stabilizing circuit process raises, and can maintain stable state, thus meets the use of LED.
As mentioned above, just the utility model can well be realized.
Claims (5)
1. a great power LED drive system, mainly comprises current rectifying and wave filtering circuit, and the drive circuit be connected with rectification filter circuit output end, is characterized in that: be also provided with voltage boosting and stabilizing circuit at drive circuit output, described voltage boosting and stabilizing circuit is by process chip U2, field effect transistor Q1, one end is connected with the VIN pin of process chip U2, the resistance R7 that the other end is then connected with the RT pin of process chip U2, one end is connected with the SS pin of process chip U2, the electric capacity C5 of other end ground connection, one end is connected with the COU pin of process chip U2, the electric capacity C6 that the other end is then connected with the FB pin of process chip U2, one end is connected with the CS pin of process chip U2, the resistance R8 that the other end is then connected with the source electrode of field effect transistor Q1, one end is connected with the VCC pin of process chip U2, the electric capacity C7 of other end ground connection, and one end is connected with the FB pin of process chip U2, the resistance R9 of other end ground connection forms, the VIN pin of described process chip U2 is all connected with drive circuit with UVLO pin, and its GND pin ground connection, its OUT pin is then connected with the grid of field effect transistor Q1.
2. a kind of great power LED drive system according to claim 1, is characterized in that: described current rectifying and wave filtering circuit is by fuse FU, and resistance R1, diode bridge rectifier U, electric capacity C1 form; Fuse FU is serially connected on an input of diode bridge rectifier U, and resistance R1 is then serially connected on another input of diode bridge rectifier U, and the positive and negative electrode of electric capacity C1 is then serially connected on two outputs of diode bridge rectifier U.
3. a kind of great power LED drive system according to claim 2, it is characterized in that: described drive circuit is by driving chip U1, diode D1, one end is connected with the LN pin of driving chip U1, the electric capacity C2 that the other end is connected with the negative pole of electric capacity C1, one end is connected with the CS2 pin of driving chip U1, the resistance R2 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the CS1 pin of driving chip U1, the resistance R3 that the other end is then connected with the negative pole of electric capacity C1, one end is connected with the SW pin of driving chip U1, the other end is the resistance R5 of ground connection after resistance R6 then, one end is connected with the N pole of diode D1, the resistance R4 that the other end is connected with the SOURCE pin of driving chip U1 after electric capacity C3, and form with the electric capacity C4 that resistance R4 is in parallel, as an output of circuit while the N pole of described diode D1 is connected with the positive pole of electric capacity C2, its P pole is then connected with DRAIN2 pin with the DRAIN1 pin of driving chip U1 simultaneously, the V33 pin of driving chip U1 is connected with its LN pin, GND pin ground connection, and SW pin is then connected with the VIN pin of process chip U2.
4. a kind of great power LED drive system according to claim 3, is characterized in that: described process chip U2 is LM5020 cake core.
5. a kind of great power LED drive system according to claim 4, is characterized in that: described driving chip U1 is MAX16840 cake core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635384.XU CN204190998U (en) | 2014-10-29 | 2014-10-29 | A kind of great power LED drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420635384.XU CN204190998U (en) | 2014-10-29 | 2014-10-29 | A kind of great power LED drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204190998U true CN204190998U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420635384.XU Expired - Fee Related CN204190998U (en) | 2014-10-29 | 2014-10-29 | A kind of great power LED drive system |
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| CN (1) | CN204190998U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424557A (en) * | 2017-08-16 | 2017-12-01 | 深圳市德普微电子有限公司 | A kind of single dual-colored LED display drive circuit |
-
2014
- 2014-10-29 CN CN201420635384.XU patent/CN204190998U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424557A (en) * | 2017-08-16 | 2017-12-01 | 深圳市德普微电子有限公司 | A kind of single dual-colored LED display drive circuit |
| CN107424557B (en) * | 2017-08-16 | 2023-01-24 | 深圳市德普微电子有限公司 | Single-double-color LED display screen driving circuit |
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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: BEIJING XINGGUANG CENTURY LIGHTING TECHNOLOGY CO., Free format text: FORMER OWNER: CHENGDU SHIRUIDA TECHNOLOGY CO., LTD. Effective date: 20150624 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jianghua Inventor before: Zhou Xiaoling |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHOU XIAOLING TO: CHEN JIANGHUA |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150624 Address after: 100122 805A Automotive Building, 2 East Third Ring Road, Beijing, Chaoyang District, Beijing Patentee after: Beijing Xingguang Century Lighting Technology Co., Ltd. Address before: 611800, Sichuan, Dujiangyan City, Chengdu Happy Town Union Village four sets of Tianlun holiday apartment, a period of 1, 1, 5 Patentee before: CHENGDU SHIRUIDA TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20171029 |