Design and implementation of LLC resonant converter with high efficiency at light load condition

In this paper, a high efficiency LLC resonant converter is presented. The burst mode control method is applied to reduce the losses and thus the efficiency of light load condition is improved. Especially, the effectiveness of burst mode frequency and switching frequency at light load condition are d...

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Bibliographic Details
Published inThe 2nd International Symposium on Power Electronics for Distributed Generation Systems pp. 538 - 542
Main Authors Ya-Chun Chen, Tsorng-Juu Liang, Wei-Jing Tseng, Jia-You Lee, Lung-Sheng Yang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2010
Subjects
burst mode
Control systems
Converters
Copper
Frequency control
light load
LLC
Resonant frequency
Switching frequency
Voltage control
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Summary:In this paper, a high efficiency LLC resonant converter is presented. The burst mode control method is applied to reduce the losses and thus the efficiency of light load condition is improved. Especially, the effectiveness of burst mode frequency and switching frequency at light load condition are discussed and verified via experimental results. The experimental results show that the efficiency can be improved with appropriate burst mode frequency and switching frequency at light load condition. Finally, a laboratory prototype with 400V input and 24 V/10 A output is implemented that the efficiency is 94.52% at full load and 83.3% at 0.25 A load condition.
ISBN:9781424456697
142445669X
ISSN:2329-5759
DOI:10.1109/PEDG.2010.5545835