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Isolated high-power LED driving power supply with multichannel output and current sharing and realization method thereof

An LED driving, multi-output technology, applied in electric light source, electroluminescent light source, light source, etc., can solve the problems of reduced circuit reliability and increased output voltage, and achieve improved current sharing accuracy, simple circuit, and current sharing. high precision effect

Inactive Publication Date: 2017-07-21
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

If the series structure is used alone, the circuit is simple, but the output voltage will increase with the increase of the number of LEDs and reduce the reliability of the circuit. Therefore, high-power LED lighting beads often adopt a series-parallel structure

Method used

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  • Isolated high-power LED driving power supply with multichannel output and current sharing and realization method thereof
  • Isolated high-power LED driving power supply with multichannel output and current sharing and realization method thereof
  • Isolated high-power LED driving power supply with multichannel output and current sharing and realization method thereof

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] This embodiment provides an isolated high-power LED drive power supply with multi-channel output current sharing, such as figure 1 As shown, it includes a half-bridge CLL resonant network, a current sharing network and an LED lamp load circuit; the LED lamp load circuit includes 2N LED lamp loads; the half-bridge CLL resonant network realizes the 2N circuit through the current sharing network Current sharing output of LED light load;

[0040] The current sharing network includes the first transformer to the Nth transformer, the first current sharing capacitor to the 2Nth current sharing capacitor, the first diode to the 2Nth diode; the primary winding of the first transformer to the primary winding of the Nth transformer The windings are connected in series;

[0041] One end of the secondary winding of the first transformer is connected to one ...

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Abstract

The invention relates to an isolated high-power LED driving power supply with multichannel output and current sharing and a realization method thereof. The driving power supply comprises a half-bridge CLL resonance network, a current sharing network, and an LED lamp load circuit, the LED lamp load circuit comprises 2N channels of LED lamp loads, and the half-bridge CLL resonance network realizes current-sharing output of the 2N channels of LED lamp loads through the current sharing network, wherein N is a natural number greater than and equal to 2. According to the driving circuit with multichannel output and current sharing, primary windings of transformers are connected in series and are combined with secondary current-sharing capacitors of the transformers, current-sharing output of four channels or any 2N channels of same or different numbers of LED loads can be realized, the circuit is simple, the efficiency is high, and the current-sharing precision is high.

Description

technical field [0001] The invention relates to the field of LED driving power supply, in particular to an isolated high-power LED driving power supply with multi-channel output and current sharing and its realization method. Background technique [0002] With the rapid development of society and people's emphasis on energy consumption and the environment, the concept of energy saving and emission reduction has become more and more popular. The demand for lighting electricity is increasing, and it has become one of the key areas of energy conservation and emission reduction. As a new generation of green lighting electric light source, LED is favored by its advantages of long life, high luminous efficiency, energy saving and environmental protection, and has been widely used in high-power lighting occasions such as street lamps and tunnels. The performance of LED driving power directly affects the LED lighting system. [0003] The single power of LED is small. In order to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/30
Inventor 林国庆汪福林林羽静
Owner FUZHOU UNIV
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