NDLI: A novel current-sharing control technique for low-voltage high-current voltage regulator module applications

Content Provider	IEEE Xplore Digital Library
Author	Xunwei Zhou Peng Xu Lee, F.C.
Copyright Year	1986
Abstract	Future generations of microprocessors are expected to exhibit much heavier loads and much faster transient slew rates. Today's voltage regulator module (VRM) will need a large amount of extra decoupling and output filter capacitors to meet future requirements, which will basically make the existing VRM topologies impractical. As a candidate topology, the interleaved quasisquare-wave (QSW) VRM exhibits very good performance, such as a fast transient response and a very high power density. The difficulty with the application of the interleaved parallel technology is the current-sharing control. In this paper, a novel current-sensing and current-sharing technique is proposed. With this technique, current sharing can be controlled simply in parallel converters without a current transformer and current-sensing resistors. In addition, this technique can be easily integrated with an IC chip. The four-module paralleled QSW VRM is used to evaluate this technique. Experimental results verify that with this technique, the VRM has a high power density, high efficiency and a fast transient response. The concept of the current sharing technique is also generalized and extended.
Sponsorship	IEEE Power Electronics Society
Starting Page	1153
Ending Page	1162
Page Count	10
File Size	608060
File Format	PDF
ISSN	08858993
Volume Number	15
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Voltage control Regulators Microprocessors Capacitors Rectifiers Transient response Power supplies Inductance Filters Topology
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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