NDLI: Design and Performance of a Resonant LLC 48V Voltage Regulator Module with a Self-sustained Oscillation Controller

Content Provider	IEEE Xplore Digital Library
Author	Youssef, Mohamed Z. Jain, Praveen K.
Copyright Year	2007
Description	Author affiliation: Member IEEE, Power Electronics Applied Research Laboratory (PEARL), Walter Light Hall, Union Street, Department of Electrical and Computer Engineering, Queen's University, Kingston, Ontario, CANADA K7L3N6. E-mail: mohamed.youssef@ece.queensu.ca (Youssef, Mohamed Z.) \|\| Fellow IEEE & Canada Research Chair in Power Electronics, Power Electronics Applied Research Laboratory (PEARL), Walter Light Hall, Union Street, Department of Electrical and Computer Engineering, Queen's University, Kingston, Ontario, CANADA K7L3N6. E-mail: praveen.jain@ece.queensu.ca (Jain, Praveen K.)
Abstract	This paper presents the performance and design of a new 48V/1.5V Voltage Regulator Module (VRM) for the stand-alone high-end servers, and notebook computer applications. The proposed VRM is based on the LLC-type resonant converter as it possesses much lower component stresses compared with the conventional series and series-parallel resonant topologies. Self-sustained oscillation control (SSOC) operation is used to achieve voltage regulation and high efficiency for a wide range of load currents. It is a new current mode controller for resonant converter, hence offers lower power component ratings than with the conventional variable frequency (VF) controller and a very fast transient response. It allows a minimum power factor angle and consequently a smaller primary current to reduce conduction losses, leading to a better working efficiency. Analytical, simulation and experimental results of a 48V/1.5V 30W prototype are presented to offer the proof of concept.
Starting Page	141
Ending Page	147
File Size	1465403
Page Count	7
File Format	PDF
ISBN	1424407133
ISSN	10482334
DOI	10.1109/APEX.2007.357507
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-02-25
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Resonance Regulators Voltage control Computer applications Stress Topology Frequency conversion Transient response Reactive power Analytical models
Content Type	Text
Resource Type	Article

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