Research on the Self Turn-On of Synchronous Rectifiers

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概要

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• In DC/DC converters with low output voltage and high output current, the technique of synchronous rectification is widely used for improving the output efficiency. However, SR buck converters can experience the abnormal phenomenon called “self turn-on” which will occur in the low-side switch under some circuit conditions. “Self turn-on” is a malfunction of the low-side switch, basically caused by the resonance of the parasitic inductance and the parasitic capacitance. It results in noticeable power dissipation. In this paper, the phenomenon will be clearly described and investigated. With the theoretical analysis and the experimental verification, strategies that can suppress this phenomenon are proposed.

• 2012-07-01

著者

• Jinno Masahito

  Department of Electrical Engineering I-Shou University

• Chen Po-Yuan

  Department of Electrical Engineering I-Shou University

• Harada Koosuke

  Energy Electronics Laboratory Sojo University

• Murata Katsuaki

  Energy Electronics Laboratory Sojo University

• LIN Ming-Shih

  Department of Electrical Engineering, I-Shou University

• JINNO Masahito

  Department of Electrical Engineering, I-Shou University

• CHEN Po-Yuan

  Department of Electrical Engineering, I-Shou University

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• Research on the Self Turn-On of Synchronous Rectifiers

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