Design criteria for resonant tank of LLC DC-DC resonant converter

Author

Lin, Ray-Lee ; Lin, Chiao-Wen

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2010

fDate

7-10 Nov. 2010

Firstpage

427

Lastpage

432

Abstract

This paper presents the design criteria for the resonant tank of the LLC resonant DC-DC converter. In order to have high efficiency within wide input voltage range, high power factor for the LLC resonant tank should be ensured. The inductance ratio of the series and parallel resonant inductors is designed according to the voltage gain and input power factor of the LLC resonant tank. Finally, the prototype circuit of the full-bridge LLC resonant converter with 48V output voltage at 12A output current is built to verify the proposed design criteria for the resonant tank.

Keywords

DC-DC power convertors; resonant power convertors; LLC DC-DC resonant converter; current 12 A; full-bridge LLC resonant converter; high power factor; parallel resonant inductors; resonant tank; series resonant inductors; voltage 48 V; Converters; Equations; Inductance; Inductors; Mathematical model; Reactive power; Resonant frequency; DC-DC converter; LLC resonant converter; resonant tank; soft-switching; zero-voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Glendale, AZ

ISSN

1553-572X

Print_ISBN

978-1-4244-5225-5

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2010.5674988

Filename

5674988