Multiphase VRM based on the symmetrical half-bridge converter

Author

Visairo, H. ; Sánchez, A. ; Rodríguez, E. ; Arau, J. ; Cobos, J.A.

Author_Institution

Dept. of Electron., Interior Internado Palmira, Morelos, Mexico

Volume

2

fYear

2004

fDate

2004

Firstpage

1275

Abstract

Nowadays, microprocessor loads impose the strictest requirements in low voltage applications, in terms of voltage regulation, current consumption and dynamics. Due to this fact, new structures of voltage regulator modules (VRMs) for high-current low-voltage applications are being studied. This paper presents a multiphase VRM based on the symmetrical half-bridge converter with the primary windings in series while the secondary windings are in parallel as an interleaved structure. This paper shows the design considerations as well as experimental results of a VRM with 3 phases evaluated on a 48 V/1.5 V, 60 A laboratory prototype.

Keywords

DC-DC power convertors; bridge circuits; voltage regulators; windings; 1.5 V; 48 V; 60 A; current consumption; high-current low-voltage applications; interleaved structure; microprocessor loads; multiphase VRM; symmetrical half-bridge converter; voltage regulation; voltage regulator modules; Buck converters; Diodes; Low voltage; MOSFETs; Microprocessors; Regulators; Topology; Transient response; Transistors; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE

Print_ISBN

0-7803-8269-2

Type

conf

DOI

10.1109/APEC.2004.1295987

Filename

1295987