A new soft recovery PWM quasi-resonant converter with a foldingsnubber network
Jin-Kuk Chung
Gyu-Hyeong Cho
Dept. of Electron., Inf. & Commun., Daelim Collage, Anyang;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Apr 2002
Volume: 49,
Issue: 2
On page(s): 456-461
ISSN: 0278-0046
References Cited: 5
CODEN: ITIED6
INSPEC Accession Number: 7232993
Digital Object Identifier: 10.1109/41.993279
Current Version Published: 2002-08-07
Abstract
A new soft recovery (SR) quasi-resonant converter (QRC) having a
multiple-order folding snubber network (MFSN) is introduced. It is
obtained by combining a normal QRC with a folding snubber network of
which the surrounding components are composed of passive devices only
(diodes and capacitors). The reverse recovery loss of the main rectifier
diode is eliminated by this method utilizing multiple resonance with a
multiple-order folding snubber network. By realizing soft switching
conditions, the proposed converter has pulsewidth modulation capability
with high efficiency and is suitable for high-voltage and high-power DC
to DC converter applications
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