CN207069905U - A kind of LED power of High Power Factor low harmony wave - Google Patents
A kind of LED power of High Power Factor low harmony wave Download PDFInfo
- Publication number
- CN207069905U CN207069905U CN201720769462.9U CN201720769462U CN207069905U CN 207069905 U CN207069905 U CN 207069905U CN 201720769462 U CN201720769462 U CN 201720769462U CN 207069905 U CN207069905 U CN 207069905U
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- China
- Prior art keywords
- power factor
- circuit
- bridge resonance
- output end
- led
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model is a kind of LED power of High Power Factor low harmony wave, include circuit of power factor correction, half-bridge resonance circuit, backfeed loop, half-bridge resonance controller, the input of circuit of power factor correction is with exchanging electrical connection, the input of half-bridge resonance circuit and the output end of circuit of power factor correction connect, the output end of half-bridge resonance circuit is connected with LED lamp, the output end of half-bridge resonance circuit is connected by backfeed loop with the input of half-bridge resonance controller, and the output end of half-bridge resonance controller is connected with circuit of power factor correction.The utility model High Power Factor, low harmony wave, no stroboscopic, the temperature on surface is low, and service life length, cost is low, and reliability is high.
Description
Technical field
The utility model designs a kind of LED power of High Power Factor low harmony wave, it is particularly a kind of using Passive Power because
The LED power of the High Power Factor low harmony wave of number control technology, belong to the innovative technology of LED power.
Background technology
As the continuous development of switch power technology, power supply miniaturization, long-life, high-quality, low cost turn into a kind of row
Industry trend.The problem of meanwhile material of LED power is not environmentally, electric energy use is not efficient, and power supply dodges frequency is also paid attention to by everybody.Nothing
Active power factor controls（Passive power factor controls）Half-bridge logical link control sublayer circuit is added to turn into the skill of current LED power
Art demand.
The content of the invention
A kind of LED electricity for High Power Factor low harmony wave that the purpose of this utility model is consideration above mentioned problem and provided
Source.The utility model High Power Factor, low harmony wave, no stroboscopic, the temperature on surface is low, service life length, and cost is low.
The technical solution of the utility model is：The LED power of High Power Factor low harmony wave of the present utility model, including it is active
Rate factor correcting circuit, half-bridge resonance circuit, backfeed loop, half-bridge resonance controller, the input of circuit of power factor correction
With exchanging electrical connection, the input of half-bridge resonance circuit and the output end of circuit of power factor correction connect, half-bridge resonance circuit
Output end be connected with LED lamp, the output end of half-bridge resonance circuit passes through the input of backfeed loop and half-bridge resonance controller
End connection, the output end of half-bridge resonance controller are connected with circuit of power factor correction.
The utility model power supply makes electricity using circuit of power factor correction and half-bridge resonance circuit, circuit of power factor correction
The power factor in source（PF values）Up to 0.99, for harmonic wave below 5%, half-bridge resonance circuit uses LLC half-bridge resonance circuits, output
Ripple very little, makes LED lamp not flash, and power supply conversion efficiency is high, as little as 45 degree of the temperature of case surface, service life length,
Cost is low.The utility model solves the problem of prior art cost height under same power, sudden strain of a muscle frequency.It is a kind of High Power Factor,
Low harmony wave, no stroboscopic, efficiency high, cost is low, and the temperature on surface is low, the LED power of the High Power Factor low harmony wave of long lifespan.
Brief description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Embodiment
Embodiment：
Schematic diagram of the present utility model is as shown in figure 1, the LED power of High Power Factor low harmony wave of the present utility model, bag
Power factor correction circuit, half-bridge resonance circuit, backfeed loop, half-bridge resonance controller are included, circuit of power factor correction
Input connects with exchanging electrical connection, the input of half-bridge resonance circuit and the output end of circuit of power factor correction, and half-bridge is humorous
The output end of circuit of shaking is connected with LED lamp, and the output end of half-bridge resonance circuit passes through backfeed loop and half-bridge resonance controller
Input connection, the output end of half-bridge resonance controller is connected with circuit of power factor correction.In the present embodiment, above-mentioned exchange
Electricity input uses 220V alternating currents.
In the present embodiment, above-mentioned circuit of power factor correction uses passive power factor correcting circuit.
In the present embodiment, above-mentioned half-bridge resonance controller uses model red2541 chip.
In the present embodiment, above-mentioned half-bridge resonance circuit uses LLC half-bridge resonance circuits.
Above-mentioned circuit of power factor correction, half-bridge resonance circuit, half-bridge resonance controller can be integrated on pcb board.
In the present embodiment, circuit of power factor correction is the topology by the use of charge pump as PFC.Above-mentioned electricity
Lotus pump uses PFC pumps.
Operation principle of the present utility model is as follows：
220V alternating currents are inputted, by passive power factor correcting circuit, each harmonic can be reduced.Use LLC half
Bridge resonance circuit, either load change or input voltage change can be operated in no-voltage workspace, have less open-minded
And turn-off power loss, the efficiency high of power supply.Backfeed loop is and anti-by feedback line the result of sampling by the sampling to output
Feed half-bridge resonance controller（RED2541）, control circuit compared with reference voltage, controls it according to comparative result
The on-off time ratio of high frequency power switch element（Dutycycle）, reach the purpose for adjusting output voltage.
Claims (4)
1. a kind of LED power of High Power Factor low harmony wave, it is characterised in that include circuit of power factor correction, half-bridge resonance
Circuit, backfeed loop, half-bridge resonance controller, the input of circuit of power factor correction is with exchanging electrical connection, half-bridge resonance electricity
The input on road and the output end of circuit of power factor correction are connected, and the output end of half-bridge resonance circuit is connected with LED lamp, and half
The output end of bridge resonance circuit is connected by backfeed loop with the input of half-bridge resonance controller, half-bridge resonance controller it is defeated
Go out end to be connected with circuit of power factor correction.
2. the LED power of High Power Factor low harmony wave according to claim 1, it is characterised in that above-mentioned PFC
Circuit uses passive power factor correcting circuit.
3. the LED power of High Power Factor low harmony wave according to claim 1, it is characterised in that above-mentioned half-bridge resonance control
Device uses model red2541 chip.
4. the LED power of the High Power Factor low harmony wave according to any one of claims 1 to 3, it is characterised in that above-mentioned half
Bridge resonance circuit uses LLC half-bridge resonance circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769462.9U CN207069905U (en) | 2017-06-29 | 2017-06-29 | A kind of LED power of High Power Factor low harmony wave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769462.9U CN207069905U (en) | 2017-06-29 | 2017-06-29 | A kind of LED power of High Power Factor low harmony wave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207069905U true CN207069905U (en) | 2018-03-02 |
Family
ID=61506659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720769462.9U Expired - Fee Related CN207069905U (en) | 2017-06-29 | 2017-06-29 | A kind of LED power of High Power Factor low harmony wave |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207069905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449838A (en) * | 2018-04-16 | 2018-08-24 | 绍兴文理学院元培学院 | Great power LED system based on remote control |
-
2017
- 2017-06-29 CN CN201720769462.9U patent/CN207069905U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108449838A (en) * | 2018-04-16 | 2018-08-24 | 绍兴文理学院元培学院 | Great power LED system based on remote control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 Termination date: 20190629 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |