A new and simple structure of PC power supply with low cost and high efficiency to meet 80 plus requirement

Author

Liang, S.-A. ; Wu, C.-P.

Author_Institution

Tech. Dev. Dept., FSP Technol. Inc., Taoyuan

fYear

2008

fDate

24-28 Feb. 2008

Firstpage

1347

Lastpage

1352

Abstract

In this paper, the soft-switching LLC half-bridge resonant converter with frequency control is proposed and used in desktop PC power supply applications. The new proposed simple structure of PC power supply with multi-output resonant converter has the features of frequency modulation operation with fixed duty cycle, zero voltage switching (ZVS), and low voltage stress in the active switches and output diodes. Moreover, it can achieve high power density, high efficiency, low switching losses and low component counts, which make the PC power supply operation to meet 80 Plus requirement and cost effective. In the paper, the new PC topology is presented, and a specific example for PC 350 W application is designed and implemented to verify its feasibility.

Keywords

bridge circuits; frequency control; network topology; resonant power convertors; switching convertors; zero voltage switching; PC power supply; PC topology; ZVS; active switches; desktop PC power supply applications; frequency control; frequency modulation operation; multioutput resonant converter; power 350 W; soft-switching LLC half-bridge resonant converter; zero voltage switching; Costs; Frequency control; Frequency modulation; Low voltage; Power supplies; Resonance; Stress; Switches; Switching converters; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2008. APEC 2008. Twenty-Third Annual IEEE

Conference_Location

Austin, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-1873-2

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2008.4522898

Filename

4522898