Abstract
AbstractThis 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.
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