New control concept for soft-switching Flyback converters with very high switching frequency

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Abstract

A conventional Flyback converter's synchronous rectification switch is controlled from the primary side via opto-isolators; introducing propagation delay. A new control concept is presented here that eliminates the need for opto-isolators, communicating instead through the coupled inductor to assist more precise soft-switching control at much higher frequencies. As a precursor to a 1-MHz GaN demonstrator, an initial 100-kHz prototype has been built to prove the feasibility of the concept.
Original languageEnglish
Title of host publicationApplied Power Electronics Conference and Exposition (APEC), 2016 IEEE
PublisherInstitute of Electrical and Electronics Engineers
Pages355-361
Publication statusPublished - 12 May 2016
EventIEEE Applied Power Electronics Conference and Exposition - Long Beach, CA, United States
Duration: 20 Mar 201624 Mar 2016

Conference

ConferenceIEEE Applied Power Electronics Conference and Exposition
CountryUnited States
CityLong Beach, CA
Period20/03/1624/03/16

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Connaughton, A., Krischan, K., Leong, K. K., & Mütze, A. (2016). New control concept for soft-switching Flyback converters with very high switching frequency. In Applied Power Electronics Conference and Exposition (APEC), 2016 IEEE (pp. 355-361). Institute of Electrical and Electronics Engineers.