High frequency ZVS self-driven full-bridge using full integration of magnetics

Author

Sterk, Douglas ; Xu, Ming ; Lee, Fred C.

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

2

fYear

2005

fDate

6-10 March 2005

Firstpage

1210

Abstract

This paper describes a ZVS full bridge topology with a self-driven current doubler secondary side topology. The unique attribute of this topology is that it utilizes a full integration of magnetic components. The integrated magnetic includes both output inductors of the current doubler, a main power transformer windings, and two self-driven gate drive transformers all in one EE/EI core. This topology and integration technique is demonstrated in an eighth brick form factor that switches at 600 kHz and can achieve 65 A load current with 1.2 V output while maintaining greater than 87% efficiency at full load.

Keywords

power transformers; transformer cores; transformer windings; zero voltage switching; 1.2 V; 600 kHz; 65 A; ZVS; current doubler; inductors; magnetic core; power transformer windings; self-driven gate drive; zero integrated magnetics; zero voltage switching; Bridge circuits; Circuit topology; Magnetics; Power supplies; Power transformers; Rectifiers; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE

Print_ISBN

0-7803-8975-1

Type

conf

DOI

10.1109/APEC.2005.1453155

Filename

1453155