Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2006. APEC '06. Twenty-First Annual IEEE
Print_ISBN :
0-7803-9547-6
DOI :
10.1109/APEC.2006.1620584
