Single magnetic push-pull forward converter featuring built-in input filter and coupled-inductor current doubler for 48 V VRM

Author

Xu, Peng ; Ye, Mao ; Lee, Fred C.

Author_Institution

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

Volume

2

fYear

2002

fDate

2002

Firstpage

843

Abstract

This paper proposes an improved push-pull forward converter with a single EI or EE core for all the magnetic components including the input inductor, the stepdown transformer and the output inductors. This topology is essentially the modified push-pull converter with the built-in input filter and the coupled-inductor current doubler rectifier. The proposed integrated magnetics features minimized leakage inductance and an air gap in only the center leg; its winding and core losses are both lower than those of conventional integrated magnetic structures

Keywords

DC-DC power convertors; air gaps; inductance; inductors; magnetic leakage; transformers; voltage control; voltage regulators; 48 V; EE core; EI core; air gap; built-in input filter; core losses; coupled-inductor current doubler; coupled-inductor current doubler rectifier; input inductor; integrated magnetics; magnetic components; minimized leakage inductance; modified push-pull converter; output inductors; single magnetic push-pull forward converter; stepdown transformer; winding losses; Core loss; Filters; Inductance; Inductors; Leg; Magnetic cores; Magnetic separation; Rectifiers; Topology; Transformer cores;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE

Conference_Location

Dallas, TX

Print_ISBN

0-7803-7404-5

Type

conf

DOI

10.1109/APEC.2002.989342

Filename

989342