A Fully Soft-Switched Single Switch Isolated DC–DC Converter

Author

Minjae Kim ; Sewan Choi

Author_Institution

Dept. of New Energy Eng., Seoul Nat. Univ. of Sci. & Technol., Seoul, South Korea

Volume

30

Issue

9

fYear

2015

fDate

Sept. 2015

Firstpage

4883

Lastpage

4890

Abstract

This paper proposes a soft-switched single switch isolated converter. The proposed converter is able to offer low cost and high power density in step-up application due to the following features: zero-current switching (ZCS) turn-on and zero-voltage switching (ZVS) turn-off of switch and ZCS turn-off of diodes regardless of voltage and load variation; low rated lossless snubber; reduced transformer volume compared to flyback-based converters due to low magnetizing current. Experimental results on a 100 kHz, 250 W prototype are provided to validate the proposed concept.

Keywords

DC-DC power convertors; switching convertors; zero current switching; zero voltage switching; ZCS; ZVS; flyback-based converters; fully soft-switched single switch isolated DC-DC converter; low rated lossless snubber; turn-off switching; turn-on switching; zero-current switching; zero-voltage switching; Capacitors; Clamps; Magnetic resonance; Snubbers; Switches; Zero current switching; Zero voltage switching; Isolated step-up dc-dc converter; Isolated step-up dc???dc converter; single switch; soft switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2014.2363830

Filename

6930812