Soft – Switched PFC Boost Converter with Integrated Flyback Converter
S.Kamalsakthi1, J.Baskaran2

1S.Kamalsakthi, PG Scholar, Adhiparasakthi Engineering College, Melmaruvathur (Tamil Nadu), India.
2J. Baskaran, Professor and HEAD, Department of EEE.,  Adhiparasakthi Engineering College, Melmaruvathur (Tamil Nadu), India.

Manuscript received on 20 January 2014 | Revised Manuscript received on 25 January 2014 | Manuscript published on 30 January 2014 | PP: 122-125 | Volume-2 Issue-6, January 2014 | Retrieval Number: F0948012614/2014©BEIESP
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Abstract: This paper presents a magnetic integration approach that reduces the number of magnetic components in a power supply by integrating magnetic components in two conversion stages. In this proposed approach a single transformer is used to implement the continuous conduction mode boost power factor corrected(PFC)converter and the DC/DC fly-back converter. The power factor is improved due to the presence of the boost converter. The size of the step-down transformer is reduced due to high frequency operation of fly-back converter. The AC supply is rectified using uncontrolled rectifier and it is boosted with the help of boost converter. The output of the boost converter is given to the fly-back converter, which converts DC to high frequency AC. The step-down transformer reduces this voltage and is rectified using half wave rectifier.
Keywords: DC/DC, AC, (PFC) 

Scope of the Article: Nanometer-Scale Integrated Circuits