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

Masoud Jabbari; Hosein Farzanehfard

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

Masoud Jabbari

Hosein Farzanehfard

Vol. 9, No. 6, pp. 835-844, Nov. 2009

10.6113/JPE.2009.9.6.835

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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.

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Cite this article

[IEEE Style]

M. Jabbari and H. Farzanehfard, "A New Soft Switching Step-Down/Up Converter with Inherent PFC Performance," Journal of Power Electronics, vol. 9, no. 6, pp. 835-844, 2009. DOI: 10.6113/JPE.2009.9.6.835.

[ACM Style]

Masoud Jabbari and Hosein Farzanehfard. 2009. A New Soft Switching Step-Down/Up Converter with Inherent PFC Performance. Journal of Power Electronics, 9, 6, (2009), 835-844. DOI: 10.6113/JPE.2009.9.6.835.