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

fYear

2006

fDate

18-22 June 2006

Firstpage

1

Lastpage

7

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE

ISSN

0275-9306

Print_ISBN

0-7803-9716-9

Type

conf

DOI

10.1109/PESC.2006.1712003

Filename

1712003