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EPE> Vol.5 No.4B, July 2013
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A New Zero-Voltage-Switching Push-Pull Converter

Abstract Full-Text HTML Download Download as PDF (Size:352KB) PP. 125-131
DOI: 10.4236/epe.2013.54B024    4,768 Downloads   7,551 Views  
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Yisheng Yuan, Qunfang Wu

Affiliation(s)

School of Electrical and Electronics Engineering, East China Jiaotong University, Nanchang, China.

ABSTRACT

A soft switching three-transistor push-pull(TTPP)converter is proposed in this paper. The 3rd transistor is inserted in the primary side of a traditional push-pull converter. Two primitive transistors can achieve zero-voltage-switching (ZVS) easily under a wide load range, the 3rd transistor can also realize zero-voltage-switching assisted by leakage inductance. The rated voltage of the 3rd transistor is half of that of the main transistors. The operation theory is explained in detail. The soft-switching realization conditions are derived. An 800 W with 83.3 kHz switching frequency prototype has been built. The experimental result is provided to verify the analysis.

KEYWORDS

Push Pull Converter; Extra Transistor; Zero-voltage-switching

Cite this paper

Y. Yuan and Q. Wu, "A New Zero-Voltage-Switching Push-Pull Converter," Energy and Power Engineering, Vol. 5 No. 4B, 2013, pp. 125-131. doi: 10.4236/epe.2013.54B024.

Conflicts of Interest

The authors declare no conflicts of interest.

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