DC–DC Converter Using a Multiple-Coupled Inductor for Low Output Voltages
Jong-Jae Lee; Bong-Hwan Kwon
Industrial Electronics, IEEE Transactions on
Volume 54, Issue 1, Feb. 2007 Page(s):467 - 478
Digital Object Identifier   10.1109/TIE.2006.888799
Summary:A new multiple-coupled inductor (MCI) is proposed for good cross regulation among low output voltages, high power density, and reduced converter volume. Moreover, a current doubler rectifier and a self-driven synchronous rectifier are presented to achieve high efficiency. The structure of the MCI is composed of four windings on a common core, and has the properties of a current doubler and good cross regulation. A dc-dc half-bridge converter using the proposed MCI is analyzed and designed for 40-W low output voltages (3.3, 4.5 V). This converter is very suitable for high current and low voltage applications. It is shown via experimental results that efficiency of over 90% and cross regulation of about 5% are achieved

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