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arXiv · 2009.07822

Ultra Buck DC/DC Converter for Electric Vehicles

Luoqi Chen·Ahmad Elkhateb·Nikolaos Athanasopoulos
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Abstract

A critical challenge in power conversion in electric vehicles is the efficient use of DC-DC buck converters that need to provide 12-V supply for load systems from 400/800-V batteries. This paper presents a literature review on the development of DC-DC buck converters. Moreover, one novel four-phase interleaved step-down topology is selected for simulation and hardware experiments. Based on the four-phase interleaved structure, an extended-phase topology is proposed, which has a higher voltage conversion ratio. Control techniques are also applied to it. Theoretical analyses and simulation results are provided to verify the improved converter. A 400V-to-12V and 150W output power hardware prototype is implemented to verify its performance

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Luoqi Chen, Ahmad Elkhateb, Nikolaos Athanasopoulos. 2020-09-16. Ultra Buck DC/DC Converter for Electric Vehicles. https://arxiv.org/abs/2009.07822

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