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A unified approach to modeling, synthesizing, and analyzing quasi-resonant converters

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2 Author(s)
Bo-Tao Lin ; Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, Hong Kong ; Lee, Y.-S.

This paper presents a general method of modeling, synthesizing, and analyzing quasi-resonant converters (QRCs), including actively clamped QRCs. First, the concept of the pulse-width modulation (PWM) switch model is generalized to encompass all PWM (nonisolated) converters. Then, by adding inductor-capacitor (LC) elements and auxiliary switches into the PWM switch, QRC families are synthesized. DC and small signal analyses can be carried out based on these switch models. Furthermore, the duality relationship between zero-voltage-switching (ZVS) and zero-current-switching (ZCS) QRCs is established systematically and rigorously

Published in:

Power Electronics, IEEE Transactions on  (Volume:12 ,  Issue: 6 )