Title :
Power Loss Analyses for Dynamic Phase Number Control in Multiphase Voltage Regulators
Author :
Qiu, Weihong ; Cheung, Chun ; Xiao, Shangyang ; Miller, Greg
Author_Institution :
Intersil Corp., Milpitas, CA
Abstract :
To improve efficiency over a wide load range, it is important to dynamically adjust the operational phase number in multiphase voltage regulators. This paper analyzes in detail the power loss profile of a synchronous multi-phase buck converter and defines the optimal phase number under different load conditions. Experimental results are provided to verify the theoretical results.
Keywords :
losses; power convertors; voltage regulators; dynamic phase number control; multiphase voltage regulators; power loss analyses; synchronous multi-phase buck converter; Buck converters; Capacitors; Energy consumption; Inductors; MOSFETs; Microprocessors; Paramagnetic resonance; Regulators; Virtual reality; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802640
