A low cost DC-DC stepping inductance voltage regulator with fast transient loading response

Author

Poon, N.K. ; Li, C.P. ; Pong, M.H.

Author_Institution

Dept. of Electr. & Electron. Eng., Hong Kong Univ., China

Volume

1

fYear

2001

fDate

2001

Firstpage

268

Abstract

A fast transient converter modified from a buck converter is proposed. It employs a stepping inductance method by which the output inductor of a buck converter is replaced by two inductors connecting in series. One has large inductance and the other has small inductance. An inductor with small inductance will take over the output inductor during transient load change and speed up dynamic response. In steady state, the large inductance takes over and keeps substantially small ripple current and minimizes RMS loss. An experiment of a 2 V DC-DC converter put under a 20 A transient load change demonstrates the merit of this approach. It is a low cost method applicable to converters with an output inductor

Keywords

DC-DC power convertors; dynamic response; load (electric); power inductors; transient response; voltage regulators; 2 V; 20 A; RMS loss minimisation; buck converter; dynamic response; low cost DC-DC stepping inductance voltage regulator; ripple current; series-connected inductors; transient load change; transient loading response; Buck converters; Costs; Inductance; Inductors; Magnetic circuits; Performance loss; Regulators; Steady-state; Switching converters; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE

Conference_Location

Anaheim, CA

Print_ISBN

0-7803-6618-2

Type

conf

DOI

10.1109/APEC.2001.911659

Filename

911659