CN201869420U - LED (light-emitting diode) driving power supply - Google Patents
LED (light-emitting diode) driving power supply Download PDFInfo
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- CN201869420U CN201869420U CN2010206444605U CN201020644460U CN201869420U CN 201869420 U CN201869420 U CN 201869420U CN 2010206444605 U CN2010206444605 U CN 2010206444605U CN 201020644460 U CN201020644460 U CN 201020644460U CN 201869420 U CN201869420 U CN 201869420U
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Abstract
The utility model relates to an LED (light-emitting diode) driving power supply, the input end of the driving power supply is connected with 220V alternating current, the output end is connected with an LED lamp, the driving power supply comprises a filter-rectifier unit, a PFC (power factor correction) control unit, a capacitor and a constant current control unit, wherein the output end of the filter-rectifier unit is connected with the input end of the PFC control unit, the output ends of the PFC control unit are connected with the input end of the constant current control unit, and the capacitor is arranged between the two output ends of the PFC control unit. Compared with the prior art, the LED driving power supply has the advantages of long service life, low loss, no stroboscopic phenomenon, high power supply conversion efficiency and the like.
Description
Technical field
The utility model relates to a kind of driving power, especially relates to a kind of LED driving power.
Background technology
LED has advantages such as environmental protection, energy-conservation, life-span be long and is regarded as the 21 century lighting source, and in power-saving technology cry surging today, the development main flow that the LED illumination becomes lighting technology has become common recognition.For performance and the minimizing failure rate of giving full play to the LED lighting device, used driving power fibrous root designs according to the LED self-characteristic.The LED driving power becomes the guarantee of LED industrial chain development; the quality of LED power supply has directly restricted the LED reliability of products; because LED is the semiconductor device of characteristic sensitivity, has negative temperature characteristic again, thereby in application process, need its operating state is stablized and protected.The LED device is very harsh to the requirement of driving power, and LED is different from common blank sheet of paper bulb, can directly connect the alternating current of 220V.LED is by the low-voltage driving of 2～3V, must design complicated translation circuit; And the LED lamp of different purposes also need be equipped with different power supply adaptors.On the international market, efficient conversion, effective power, constant current accuracy, power source life, the electromagnetic compatibility requirements of the external LED of client team driving power are all very high.Because power supply has as about as the heart at whole light fixture, designs a good power supply and must integrate and take all factors into consideration each factor.
Yet what be worth worry is that under the background of market a slice prosperity, the LED product quality is very different, and causes the demand confusion of driving power.Under the market LED product developing state like a raging fire, with regard to LED driving power enterprise, be faced with the challenge of product itself at present: at first be that the drive circuit bulk life time is not long, especially Primary Component such as electric capacity, at high temperature the life-span of electric capacity directly has influence on the life-span of power supply; Next is that the conversion efficiency of LED driving power is low excessively, and from the present market demand, led driver need be challenged higher conversion efficiency, is all the more so driving great power LED especially, because all do not dissipate as heat as the power of light output.This not only causes the lifetime of LED itself, has also caused the poor efficiency of power source conversion simultaneously, has influenced the performance of LED energy-saving effect.Simultaneously, a lot of in the market like products exist huge defective, stroboscopic for example, the low phenomenons such as (PF＜0.9) of power factor.
The utility model content
The purpose of this utility model is exactly to provide a kind of life-span length, low-loss, no stroboscopic phenomenon for the defective that overcomes above-mentioned prior art existence, and the high LED driving power of power supply conversion efficiency.
The purpose of this utility model can be achieved through the following technical solutions: a kind of LED driving power, the input of this driving power connects the 220V alternating current, output connects the LED lamp, described driving power comprises filter rectification unit, PFC control unit, electric capacity, constant current control unit, the output of described filter rectification unit is connected with the input of PFC control unit, the output of described PFC control unit is connected with the input of constant current control unit, and described electric capacity is arranged between two outputs of PFC control unit.
Described filter rectification unit comprises electromagnetic interface filter, bridge rectifier, and the output of described electromagnetic interface filter is connected with the input of bridge rectifier.
Described PFC control unit comprises pfc controller.
Described constant current control unit comprises constant-current controller.
Described electric capacity is thin-film capacitor.
Compared with prior art, the utlity model has following advantage:
1, the life-span is long: owing to used low-loss thin-film capacitor of long-life to replace electrochemical capacitor, the driving power life-span can be satisfied the requirement that LED drives the life-span.
2, no stroboscopic phenomenon: the circuit working mode adopts the first constant voltage drive pattern of constant current again, and the low pressure difference linearity constant current technology has then been used in constant current, thereby has eliminated the defective of stroboscopic fully.
3, high efficiency: the utility model after tested, power factor has reached more than 0.95, power supply conversion efficiency is up to 90%.The performance that this has not only improved LED itself has also reduced the pollution to electrical network.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
Embodiment
As shown in Figure 1, a kind of LED driving power, the input of this driving power connects the 220V alternating current, and output connects the LED lamp.Driving power comprises filter rectification unit, PFC control unit 3, electric capacity 4, constant current control unit, the output of filter rectification unit is connected with the input of PFC control unit 3, the output of PFC control unit 3 is connected with the input of constant current control unit, and electric capacity is arranged between two outputs of PFC control unit 3.The filter rectification unit comprises electromagnetic interface filter 1, bridge rectifier 2, and the output of electromagnetic interface filter 1 is connected with the input of bridge rectifier 2, an output head grounding of bridge rectifier 2, and another output connects PFC control unit 3.PFC control unit 3 comprises pfc controller and accessory circuit thereof, is provided with electric capacity 4 between two output circuits of PFC control unit 3, and this electric capacity 4 adopts thin-film capacitor.The constant current control unit comprises constant-current controller 5 and accessory circuit thereof, and this constant-current controller 5 is arranged on the circuit that is connected with the LED lamp.What the utility model used is long-life, low-loss thin-film capacitor, thereby has replaced electrochemical capacitor, improves the working life of circuit with this.When considering the circuit working mode, adopted the first constant voltage drive pattern of constant current again, the low pressure difference linearity constant current technology is adopted in constant current, eliminates stroboscopic phenomenon fully.Utilized power factor correction technology simultaneously, made power factor reach more than 0.95, reduced pollution electrical network.Power supply conversion efficiency is up to 90%.
Claims (5)
1. LED driving power, the input of this driving power connects the 220V alternating current, output connects the LED lamp, it is characterized in that, described driving power comprises filter rectification unit, PFC control unit, electric capacity, constant current control unit, the output of described filter rectification unit is connected with the input of PFC control unit, and the output of described PFC control unit is connected with the input of constant current control unit, and described electric capacity is arranged between two outputs of PFC control unit.
2. a kind of LED driving power according to claim 1 is characterized in that described filter rectification unit comprises electromagnetic interface filter, bridge rectifier, and the output of described electromagnetic interface filter is connected with the input of bridge rectifier.
3. a kind of LED driving power according to claim 1 is characterized in that described PFC control unit comprises pfc controller.
4. a kind of LED driving power according to claim 1 is characterized in that described constant current control unit comprises constant-current controller.
5. a kind of LED driving power according to claim 1 is characterized in that described electric capacity is thin-film capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206444605U CN201869420U (en) | 2010-12-06 | 2010-12-06 | LED (light-emitting diode) driving power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206444605U CN201869420U (en) | 2010-12-06 | 2010-12-06 | LED (light-emitting diode) driving power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201869420U true CN201869420U (en) | 2011-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206444605U Expired - Fee Related CN201869420U (en) | 2010-12-06 | 2010-12-06 | LED (light-emitting diode) driving power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201869420U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045927A (en) * | 2010-12-06 | 2011-05-04 | 上海正龙实业有限公司 | LED (light-emitting diode) power supply |
| CN102917504A (en) * | 2012-10-29 | 2013-02-06 | 广东锦力电器有限公司 | Led drive circuit |
| CN102984842A (en) * | 2011-09-05 | 2013-03-20 | 宜兴市宏力灯杆灯具有限公司 | Constant current light-emitting diode (LED) power supply without external metal oxide semiconductor field effect transistor (MOSFET) |
| WO2015096753A1 (en) * | 2013-12-27 | 2015-07-02 | 欧普照明股份有限公司 | Led constant-current driver |
| CN104797061A (en) * | 2015-05-13 | 2015-07-22 | 电子科技大学 | LED lighting circuit with double-power-supply drive |
-
2010
- 2010-12-06 CN CN2010206444605U patent/CN201869420U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102045927A (en) * | 2010-12-06 | 2011-05-04 | 上海正龙实业有限公司 | LED (light-emitting diode) power supply |
| CN102984842A (en) * | 2011-09-05 | 2013-03-20 | 宜兴市宏力灯杆灯具有限公司 | Constant current light-emitting diode (LED) power supply without external metal oxide semiconductor field effect transistor (MOSFET) |
| CN102984842B (en) * | 2011-09-05 | 2015-02-18 | 宜兴市宏力灯杆灯具有限公司 | Constant current light-emitting diode (LED) power supply without external metal oxide semiconductor field effect transistor (MOSFET) |
| CN102917504A (en) * | 2012-10-29 | 2013-02-06 | 广东锦力电器有限公司 | Led drive circuit |
| WO2015096753A1 (en) * | 2013-12-27 | 2015-07-02 | 欧普照明股份有限公司 | Led constant-current driver |
| CN104797061A (en) * | 2015-05-13 | 2015-07-22 | 电子科技大学 | LED lighting circuit with double-power-supply drive |
| CN104797061B (en) * | 2015-05-13 | 2017-04-26 | 电子科技大学 | LED lighting circuit with double-power-supply drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20110615 Termination date: 20171206 |