An improved design method of LLC resonant converter

For LLC resonant converter, design of the resonant tank influences much of the performance. In traditional design ideas, the transformer magnetizing inductance values are more dependent on engineering experience. In this paper, a model is constructed based on the proposed “current angle” theory by accurately calculating the LLC resonant converter in resonant frequency, and an improved design method of LLC resonant tank based on the new model is proposed. Finally, following proposed design guide line, a prototype of LLC resonant converter has been built and tested.

[1]  F. Lee,et al.  LLC resonant converter for front end DC/DC conversion , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[2]  Jianping Ying,et al.  A Novel Precise Design Method for LLC Series Resonant Converter , 2006, INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference.

[3]  Yan Liang,et al.  Optimal design methodology for LLC resonant converter , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[4]  Jee-hoon Jung,et al.  Theoretical analysis and optimal design of LLC resonant converter , 2007, 2007 European Conference on Power Electronics and Applications.