Title: Comparison of multiphase versus multilevel DC/DC-converters for automotive power
Abstract: Further automotive efficiency improvements require higher voltage levels than 14 V for electric energy generation and distribution. As long as not all electric consumers can be adapted to the higher voltage level, DC/DC-converters link automotive power nets with different voltages. For low voltage converters without galvanic isolation mostly multiphase DC/DC-converters with coupled or uncoupled inductors are proposed due to their high power density. Multilevel architectures like the Flying Capacitor Multilevel DC/DC-Converter offer similar benefits and it will be shown that they need a smaller inductor size and provide better fault behaviour for short-on-failure switches. Efficiency is similar despite serial connected switches. This paper compares the two architectures regarding component count, control, size, fault tolerance and efficiency.
Publication Year: 2013
Publication Date: 2013-09-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 8
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