Analysis and Design of a 1MHz LLC Resonant Converter with Coreless Transformer Driver
In this paper, the analysis and design of a 1MHz LLC resonant converter is presented. Zero-voltage switching (ZVS) of the primary MOSFETs (Infineon) and zero-current switching (ZCS) of the rectifier diodes are guaranteed over the entire operation range, which dramatically reduce the switching loss and improve EMI performance. In addition, the low voltage stresses of MOSFETs and the rectifier diodes allow the designer to use the devices with better conduction performance. The detailed design method for the LLC resonant tank parameters is presented in this paper, which fully guarantees the ZVS conditions. An integrated driver solution is implemented by a novel half bridge driver IC 2ED020I12-F (Infineon) employing coreless transformer (CLT) technology. Finally, a 1MHz 250W LLC resonant converter prototype is implemented to verify the operational principles and design method of the proposed converter. The developed prototype can operate with a wide input voltage range of 250-400V with maximum 92.7％ efficiency at 24V and 250W output. Therefore, the proposed converter is suitable for high effi-ciency and high power density application such as LCD and PDP TV power module.
Mingping Mao Dimitar Tchobanov Dong Li Martin Maerz Tobias Gerber Gerald Deboy Leo Lorenz
Tongji University, Siping Rd 1239, 200092 Shanghai-China Fraunhofer Institute of Integrated Systems and Device Technology, Schottkystr.10, 91058 Erlangen – G Nanjing University of Aeronautics and Astronautics, Yudaostr.29, 210016 Nanjing –China Infineon Technologies Astria AG, Villach, Austria Infineon Technologies China Co.Ltd., Pudong, China
国际会议
PCIM China 2007(International Conference Power Electronics)(2007年中国电力电子技术国际会议)
上海
英文
2007-03-21（万方平台首次上网日期，不代表论文的发表时间）