A New Zero-Voltage-Switching Push-Pull Converter


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.

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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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