Title :
DCR Current Sensing Method for Achieving Adaptive Voltage Positioning(AVP) in Voltage Regulators with Coupled Inductors
Author :
Yan Dong ; Ming Xu ; Lee, Fred C.
Author_Institution :
Center for Power Electronics Systems, The Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA Email: ydong@vt.edu
Abstract :
In microprocessor Voltage Regulators (VRs) with coupled inductors, the conventional DCR current sensing method doesn´t work any more because of the current coupling effect among phases. A new DCR current sensing method for achieving Adaptive Voltage Positioning (AVP) in VRs with coupled inductors is proposed in this paper. The proposed DCR current sensing methods in VRs with two types of coupled inductors (integrated coupled inductors and center tap coupled inductors) are analyzed respectively in detail. After that, the current sharing of the coupled inductor VR with the proposed DCR current sensing method is analyzed. Finally, the proposed DCR current sensing method for achieving AVP in coupled inductor VRs is verified by the experimental results.
Keywords :
DCR current sensing; adaptive voltage positioning; coupled inductor; voltage regulator; Carbon capture and storage; Inductance; Inductors; Microprocessors; Power electronics; Regulators; Signal analysis; Transient response; Virtual reality; Voltage; DCR current sensing; adaptive voltage positioning; coupled inductor; voltage regulator;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1712003
