Voltage divider and its application in the two-stage power architecture

Author

Xu, Ming ; Sun, Julu ; Lee, Fred C.

Author_Institution

Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

2006

Abstract

An ultra-high power density DC/DC converter with fixed conversion ratio is proposed for the two-stage power architecture in the area of power management for the processor based power systems, including server, desktop, laptop, and other battery powered portable applications. Without the magnetic component inside, its power density has been scaled up by an order over the conventional approach. In addition, it also features the capability of holding ultra-high efficiency within whole load range, which is promising to the battery life extension in the laptop, 1 kw/inch³ power density and 98% efficiency have been demonstrated in 120W and 60W DC/DC prototypes designed for two-stage VRs.

Keywords

DC-DC power convertors; computer power supplies; voltage dividers; voltage regulators; 120 W; 60 W; DC-DC converter; battery life extension; magnetic component; power management; processor based power systems; two stage voltage regulator; two-stage power architecture; voltage divider; Bandwidth; Batteries; Capacitors; Energy management; Microprocessors; Portable computers; Power system management; Switching frequency; Virtual reality; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE

Print_ISBN

0-7803-9547-6

Type

conf

DOI

10.1109/APEC.2006.1620584

Filename

1620584