Conference Paper

Active resonant tank to achieve zero-voltage-switching for non-isolated DC-DC converters with synchronous rectifiers

Emerson Network Power, Astec Power Adv. Technol., Andover, MA
DOI: 10.1109/IECON.2005.1568970 Conference: Industrial Electronics Society, 2005. IECON 2005. 31st Annual Conference of IEEE
Source: IEEE Xplore

ABSTRACT A concept of active resonant tank (ART) is proposed for high frequency non-isolated DC-DC converters to achieve zero-voltage-switching (ZVS) of the main switch and eliminate reverse recovery and body diode conduction losses of the synchronous rectifier in order to improve conversion efficiency and reduce EMI noises. The concept is generalized for six basic non-isolated converters. A buck converter with the ART cell is analyzed in great detail, and a 100 W prototype is built to verify the concept. Experimental results agree with theoretical analysis and improvement in efficiency is achieved due to the reduced switching and reverse-recovery losses

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