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Operational characteristics of a step-down converter applied proposed switching transient waveform modification

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7 Author(s)
T. Mori ; Utsunomiya University, 7-1-2 Yoto Utsunomiya Tochigi, Japan ; T. Igarashi ; H. Funato ; S. Ogasawara
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Recently, high performance power switching device realize high performance power converter. However, high speed turn-on and turn-off cause electromagnetic interference (EMI). EMI filters or wire shields decrease EMI. However, they take over space of automotive, and cost is expense. Authors have proposed a new method to decrease high-frequency noise at specific frequency band with modification of switching transient slope. In order to realize a step-down converter with modified switching slope, there are several problems such as generating PWM signal with modified slope, feasibility in a real chopper circuit, switching loss and so on. In this paper, a step-down converter applied proposed modified switching slope was successfully realized using MT (Modified Transient)-PWM generator. The operational characteristics were analyzed for resistive load.

Published in:

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Date of Conference:

May 30 2011-June 3 2011