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Analysis and design of a ZVS converter for high voltage input–low voltage output application
Author(s) -
Yan Zhou,
BoLin Wang
Publication year - 2012
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21750
Subject(s) - duty cycle , topology (electrical circuits) , voltage , transfer function , buck converter , signal (programming language) , bridge (graph theory) , small signal model , electronic engineering , computer science , buck–boost converter , engineering , electrical engineering , control theory (sociology) , control (management) , boost converter , programming language , medicine , artificial intelligence
This paper proposes a full‐bridge ( d = 50%) cascaded buck topology which is a very suitable circuit for high voltage input–low voltage output applications with high output current. Benefiting from working under a large duty cycle, the proposed converter can easily achieve zero voltage switching turn‐on and turn‐off of active switches in a full bridge. Small‐signal model of this topology is analyzed through its corresponding peak current mode control. Its small‐signal transfer function is given, and the control loop design is discussed. Advantages of this topology and operation principles are analyzed. Design guidelines, drawn from this analysis, are applied on a low‐voltage (3.3 V) output voltage prototype to validate the proposed concept. © 2012 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.