A scalable multiphase buck converter with average current share bus

Author

Huang, Wenkang ; Schuellein, George ; Clavette, Danny

Author_Institution

Int. Rectifier, Rhode Island IC Design Center, North Kingstown, RI, USA

Volume

1

fYear

2003

fDate

9-13 Feb. 2003

Firstpage

438

Abstract

The paper presents a scalable multiphase synchronous buck converter which meets the tight requirements of the next generation microprocessors. Flexibility in the number of phases (1-16 phases) accommodates requirements of various applications. The converter can be easily expanded or paralleled with other voltage regulator modules (VRM) through an average current share bus. The distributed control IC architecture allows for local phase current signal processing, which minimizes induced noise and facilitates layout while reducing the gate driver to power stage impedance. The experimental results are given to show the advantages of the converter.

Keywords

DC-DC power convertors; computer power supplies; integrated circuits; voltage control; voltage regulators; average current share bus; distributed control IC architecture; gate driver reduction; induced noise minimisation; local phase current signal processing; power stage impedance; scalable multiphase buck converter; scalable multiphase synchronous buck converter; voltage regulator modules; Buck converters; Distributed control; Integrated circuit layout; Integrated circuit noise; Microprocessors; Noise reduction; Phase noise; Regulators; Signal processing; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2003. APEC '03. Eighteenth Annual IEEE

Conference_Location

Miami Beach, FL, USA

Print_ISBN

0-7803-7768-0

Type

conf

DOI

10.1109/APEC.2003.1179250

Filename

1179250