High frequency active-clamp buck converter for low power automotive applications

Chenhao Nan, Raja Ayyanar, Youhao Xi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

11 Scopus citations

Abstract

Low power (5 W - 25 W) automotive DC-DC converters have a very wide input voltage range from 4.5V to 42V, and it is usually operated at high switching frequency in order to comply with the strict CISPR-25 Standard for EMI performance. The conventional buck converter is currently employed for such applications owing to its simplicity and low cost, but it has low efficiency at high switching frequencies and high EMI emission due to hard switching. To solve these issues, an active-clamp buck converter is proposed in this paper, which features zero-voltage-switching (ZVS) and hence high efficiency and low EMI emission over a wide input voltage range, making it suitable for low power automotive applications. The operating principles including ZVS mechanism, detailed design considerations and experimental results from a 1 MHz prototype are presented.

Original languageEnglish (US)
Title of host publication2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3780-3785
Number of pages6
ISBN (Print)9781479956982
DOIs
StatePublished - Nov 11 2014
Event6th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2014 - Pittsburgh, United States
Duration: Sep 14 2014Sep 18 2014

Other

Other6th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2014
CountryUnited States
CityPittsburgh
Period9/14/149/18/14

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology

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  • Cite this

    Nan, C., Ayyanar, R., & Xi, Y. (2014). High frequency active-clamp buck converter for low power automotive applications. In 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014 (pp. 3780-3785). [6953915] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2014.6953915