Very High Frequency Half Bridge DC/DC Converter

Mickey Pierre Madsen, Arnold Knott, Michael A. E. Andersen

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Abstract

This paper presents the first, off chip, class DE (resonant half bridge) converter working in the Very High Frequency (VHF) range. The benefits of using half bridge circuits both in the inverter and rectifier part of a VHF resonant dc/dc converter are analyzed and design equations for all components in the power stage are given. The circuit has been simulated to verify the accuracy of the presented equations and an efficiency
of 89% has been shown. A prototype has been implemented with self-oscillating resonant gate drives driving the switches. The prototype has been used to drive an LED string and shows an efficiency of 85% at 29 MHz with 130 V input and 13.4 W output. The efficiency
was above 82% in the range 110-150 V input with output power between 10.3 W and 16.5 W
Original languageEnglish
Title of host publicationProceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition
PublisherIEEE
Publication date2014
Pages1409-1414
ISBN (Print)978-1-4799-2325-0
Publication statusPublished - 2014
EventTwenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition - Fort Worth Convention Center , Fort Worth, TX , United States
Duration: 16 Mar 201420 Mar 2014
http://www.apec-conf.org/

Conference

ConferenceTwenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition
LocationFort Worth Convention Center
CountryUnited States
CityFort Worth, TX
Period16/03/201420/03/2014
Internet address

Cite this

Madsen, M. P., Knott, A., & Andersen, M. A. E. (2014). Very High Frequency Half Bridge DC/DC Converter. In Proceedings of Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition (pp. 1409-1414). IEEE.