DocumentCode
2038426
Title
Analysis of Double Step-Down Two-Phase Buck Converter for VRM
Author
Nishijima, K. ; Harada, K. ; Nakano, T. ; Nabeshima, T. ; Sato, T.
Author_Institution
Dept. of Electr. & Electron. Eng., Oita Univ.
fYear
2005
fDate
Sept. 2005
Firstpage
497
Lastpage
502
Abstract
A novel two-phase buck converter suitable to apply the power supplies for MPU is proposed. Compared to conventional two-phase buck converter, the proposed converter essentially has double step-down ratio as Eo/Ei = D/2 and high efficiency is realized by reducing the switching loss of the switching elements. In addition the current ripple of the output smoothing capacitor is improved to the same value as that of conventional four-phase buck converter. Moreover the current unbalance between two inductors in each phase is removed automatically without any current sensing means. The above fine characteristics are simply achieved an additional capacitor
Keywords
capacitors; losses; switching convertors; voltage regulators; MPU; VRM; double step-down two-phase buck converter; output smoothing capacitor; switching loss reduction; Buck converters; Capacitors; Circuits; Inductors; Power supplies; Rectifiers; Smoothing methods; Switches; Switching converters; Switching loss;
fLanguage
English
Publisher
ieee
Conference_Titel
Telecommunications Conference, 2005. INTELEC '05. Twenty-Seventh International
Conference_Location
Berlin
Print_ISBN
978-3-8007-2905-0
Type
conf
DOI
10.1109/INTLEC.2005.335149
Filename
4134388
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