Abstract

The Boost Converter is basic topology for step up DC-DC Converter. The Boost Converter uses switching device such as MOSFET and IGBT. Every switching devices have body resistances because of their own characteristic and structure. the one of body residences is RD which causes a lot of loss in the power conversion system. Additionally, too high RD causes abnormal operation. In this paper, we analysed the characteristic of boost converter with each various RD situation. Finally, we tested the performance and problem of the analyzed system with PSpice. In order to solve this problem we designed multiphase converter. It will be helpful to design higher performance boost converter with stable operation.

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