Design of multi-phase DC-DC converter with averaged current sharing control

Author

Guo Guoyong ; Shi Bingxue

Author_Institution

Inst. of Microelectron., Tsinghua Univ., Beijing, China

Volume

1

fYear

2003

fDate

21-24 Oct. 2003

Firstpage

522

Abstract

A novel multi-phase PWM DC-DC converter is designed, in order to solve the problem of meeting the power supply requirements of the new generation microprocessor which requires 40-100 A currents, lower voltage and better current transient response. In multi-phase converter, how to balance the currents in each phase is most important, and the averaged current sharing is an effective way. The multi-phase converter, by distributing the power and load current results in smaller and lower cost transistor with fewer input and output capacitors. It meets the specifications of Intel´s VRM9.0 design guideline for the power supply of high-performance Pentium IV central processing units.

Keywords

DC-DC power convertors; PWM power convertors; computer power supplies; electric current control; microcomputers; transient response; 40 to 100 A; Intel VRM9.0 design guideline; PWM converter; Pentium IV CPU; Pentium IV central processing units; averaged current sharing control; input capacitors; load current distribution; microprocessor; multiphase DC-DC converter design; output capacitors; power distribution; power supply requirements; pulse width modulation; transient response;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2003. Proceedings. 5th International Conference on

ISSN

1523-553X

Print_ISBN

0-7803-7889-X

Type

conf

DOI

10.1109/ICASIC.2003.1277601

Filename

1277601