Investigation of topology candidates for 48 V VRM

Author

Ye, Mao ; Xu, Peng ; Yang, Bo ; 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

699

Abstract

In future applications, it will be impractical for voltage regulator modules (VRMs) to draw power from the 12 V output of the silver box because the voltage bus will be too low to deliver more power. Therefore, distributed power systems (DPSs) with buses of 48 V will be more feasible solutions for future high-end PCs. This paper focuses primarily on the investigation and comparison of 48 V VRM candidates. Six 48 V VRM prototypes are built and compared: the active clamp forward, asymmetrical half bridge, symmetrical half bridge, push-pull, push-pull forward and integrated-filter push-pull forward topologies

Keywords

DC-DC power convertors; bridge circuits; computer power supplies; switching circuits; voltage regulators; 12 V; 48 V; VRM topology candidates; active clamp forward topology topology; asymmetrical half bridge topology; computer power supply; distributed power systems; high-end PCs; integrated-filter push-pull forward topology; push-pull forward topology; push-pull topology; symmetrical half bridge topology; voltage bus; voltage regulator modules; Application software; Circuit topology; Inductors; Microprocessors; Power supplies; Power systems; Regulators; Silver; Transformers; Voltage;

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.2002.989322

Filename

989322