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Investigation of Topology Candidates for 48V VRM
TYPE: PAPER - CONFERENCE
Authors: Lee, Fred C.; Xu, Peng; Yang, Bo; Ye, Mao
Source: CPES Seminar 2002: Blacksburg, VA (04/14/02)
Pages: 165-172
Copyright: © This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of CPES's products or services. Internal or personal use of this material is permitted.
ABSTRACT
In future applications, it will be impractical for voltage regulator modules(VRMs) to draw power from the 12V 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 48V will be more feasible solutions for future high-end PCs. This paper focuses primarily on the investigation and comparison of 48V VRM candidates. Six 48V 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.
