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Analysis of Coupled Inductors for Low-Ripple Fast-Response Buck Converter
Santhos A. WIBOWO Zhang TING Masashi KONO Tetsuya TAURA Yasunori KOBORI Ken-ichi ONDA Haruo KOBAYASHI
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/02/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit Techniques and Related Topics)
coupled inductor, multiphase, buck converter, DC-DC converter,
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This letter presents an analysis of characteristics of multiphase buck converters with coupled inductors. We derive equivalent inductances that provide both low per-phase steady-state ripple current and fast transient response. The characteristics of coupled-inductor circuits--low per-phase ripple current and fast response--were examined and verified by circuit simulation and experiments.