Static and Dynamic Characteristics of a Forward-Flyback-Mixed Converter

Author

Kusuhara, Yoshito ; Nakayama, Asahi ; Ninomiya, Tamotsu ; Nakagawa, Shin

Author_Institution

Dep. of Production System Engineering, Kyushu Polytechnic College, Shii 1665-1, Kokuraminami-ku, Kitakyushu, Fukuoka, 802-0985, Japan. E-mail: kusuhara@kyushu-pc.ac.jp

fYear

2007

fDate

Feb. 25 2007-March 1 2007

Firstpage

768

Lastpage

773

Abstract

This paper proposes a novel DC-DC converter where both the forward and the flyback actions are mixed. This novel converter has some prominent features of the voltage reduction for the main switch, the current-ripple reduction of output inductor, the size reduction, and the power loss reduction. This converter is named "Forward-Flyback-Mixed converter" and is abbreviated as "FFB converter." This paper presents the detailed analyses of static and dynamic characteristics for the continuous-conduction and the discontinuous-conduction modes. Comparing the analysis, simulation, and experiment, all the results agree well, and the analytical models were verified. Furthermore, comparing the proposed FFB converter with the conventional forward converter, it is clarified that the efficiency improvement is achieved and the FFB converter has a higher efficiency of 94% for output load of 18V/4A, and that its highly stable operation is performed.

Keywords

Analytical models; Circuit topology; DC-DC power converters; Diodes; Educational institutions; Inductors; Production systems; Switches; Switching converters; Systems engineering and theory;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE

Conference_Location

Anaheim, CA, USA

ISSN

1048-2334

Print_ISBN

1-4244-0713-3

Type

conf

DOI

10.1109/APEX.2007.357602

Filename

4195806