Table of Contents
Advances in Power Electronics
Volume 2012, Article ID 730473, 10 pages
Research Article

Embedded Controlled Isolated Bidirectional Full-Bridge DC-DC Converter with Flyback Snubber

1EEE Department, St. Joseph's Institute of Technology, Affiliated to Anna University, Chennai-600119, India
2Jerusalem College of Engineering, Anna University Chennai, Chennai 600 100, India

Received 10 May 2012; Revised 16 July 2012; Accepted 31 July 2012

Academic Editor: C. M. Liaw

Copyright © 2012 D. Kirubakaran and Rama Reddy Sathi. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An isolated bidirectional full-bridge DC-DC converter with flyback snubber for supplying a resistive load is simulated and experimentally verified. The DC-DC converter for high conversion ratio, high output power, and soft start-up capability is presented in this paper. The circuit consists of a capacitor, a diode, and a flyback converter. These components help to clamp the voltage spikes caused by the current difference between the current fed inductor and leakage inductance of the isolation transformer. The switches are operated by soft-switching technology. The suppression of inrush current which is usually found in the boost mode start-up transition is presented here. The simulated and experimental results for output voltage, output current, and power for both buck and boost modes are presented.