Design and implementation of LLC resonant converter with high efficiency at light load condition
- Resource Type
- Conference
- Authors
- Chen, Ya-Chun; Liang, Tsorng-Juu; Tseng, Wei-Jing; Lee, Jia-You; Yang, Lung-Sheng
- Source
- The 2nd International Symposium on Power Electronics for Distributed Generation Systems Power Electronics for Distributed Generation Systems (PEDG), 2010 2nd IEEE International Symposium on. :538-542 Jun, 2010
- Subject
- Power, Energy and Industry Applications
Components, Circuits, Devices and Systems
Switching frequency
Converters
Control systems
Frequency control
Resonant frequency
Copper
Voltage control
LLC
light load
burst mode
switching frequency
- Language
- ISSN
- 2329-5759
2329-5767
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.