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A New Soft Switching Step-Down/Up Converter with Inherent PFC Performance  

Jabbari, Masoud (Dept. of Electrical and Computer Eng., Isfahan University of Technology (IUT))
Farzanehfard, Hosein (Dept. of Electrical and Computer Eng., Isfahan University of Technology (IUT))
Publication Information
Journal of Power Electronics / v.9, no.6, 2009 , pp. 835-844 More about this Journal
Abstract
In this paper a new buck-boost type DC-DC converter is presented. Its voltage gain is positive, all active elements operate under soft-switching condition independent of loading, magnetic isolation and self output short-circuit protection exist, and very fast dynamic operation is achievable by a simple bang-bang controller. This converter also exhibits appropriate PFC characteristics since its input current is inherently proportional to the source voltage. When the voltage source is off-line, it is sufficient to add an inductor after the rectifier, then near unity power factor is achievable. All essential guidelines to design the converter as a DC-DC and a PFC regulator are presented. Simulation and experimental results verify the developed theoretical analysis.
Keywords
DC-DC converter; PFC; Resonant converters; Soft switching;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
Times Cited By Web Of Science : 8  (Related Records In Web of Science)
Times Cited By SCOPUS : 6
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