Design and optimization of a wide output voltage range LED driver based on LLC resonant topology

@article{Chen2011DesignAO,
  title={Design and optimization of a wide output voltage range LED driver based on LLC resonant topology},
  author={Yue Chen and Xinke Wu and Zhaoming Qian and Wenping Zhang},
  journal={8th International Conference on Power Electronics - ECCE Asia},
  year={2011},
  pages={2831-2837}
}
LLC resonant converter is an excellent candidate for medium power DC/DC converter. However, it is usually used in constant voltage output application. As for the DC/DC stage in high efficiency LED driver, the output voltage may vary widely while output current remains constant. This paper proposes a new design method which is suitable for wide output range application. Design process, analysis and optimization of design parameters are also discussed in detail. A 140W experimental prototype is… CONTINUE READING

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