High-frequency off-line power conversion using zero-voltage-switching quasi-resonant and multiresonant techniques

The characteristics and limitations of the half-bridge zero-voltage-switched (ZVS) quasi-resonant converters (QRCs) are described. A novel multiresonant concept is proposed for the half-bridge topology to improve the ZVS QRC's load range. Experimental results for 300 V. 75 W zero-voltage-switched quasi-resonant and multiresonant converters operating in the frequency range from 2 MHz to 8 MHz are presented. >

[1]  Kwang-Hwa Liu.  High-frequency quasi-resonant converter techniques , 1986 .

[2]  Albert Man,et al.  Low-profile high-frequency off-line quasi-resonant converter , 1987, 1987 IEEE Applied Power Electronics conference and Exposition.

[3]  Fred C. Lee,et al.  Evaluation and design of megahertz-frequency off-line zero-current-switched quasi-resonant converters , 1989 .

[4]  F. C. Lee,et al.  Zero-voltage-switched quasi-resonant buck and flyback converters — Experimental results at 10 MHz1 , 1987, IEEE Power Electronics Specialists Conference.

[5]  L. F. Casey,et al.  A high-frequency, low volume, point-of-load power supply for distributed power systems , 1988 .

[6]  Kwang-Hwa Liu,et al.  Quasi-Resonant Converters-Topologies and Characteristics , 1987, IEEE Transactions on Power Electronics.

[7]  Fred C. Lee,et al.  Zero-voltage-switching multi-resonant technique-a novel approach to improve performance of high frequency quasi-resonant converters , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[8]  R. Steigerwald,et al.  A comparison of half-bridge resonant converter topologies , 1987, 1987 IEEE Applied Power Electronics conference and Exposition.

[9]  Fred C. Lee,et al.  Hybridized off-line 2-MHz zero-current-switched quasi-resonant converter , 1989 .

[10]  F. Lee,et al.  Offline application of the fixed-frequency clamped-mode series resonant converter , 1991 .

[11]  J. A. Sabate,et al.  Off-line application of the fixed frequency clamped mode series-resonant converter , 1989, Proceedings, Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[12]  F. Lee,et al.  Zero-voltage switching technique in DC/DC converters , 1986 .

[13]  Milan M. Jovanovic,et al.  Mode analysis of half-bridge zero-voltage-switched multi-resonant converter , 1989 .