Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.911659
