A Hybrid Multitrack-Sigma Converter with Integrated Transformer for Wide Input Voltage Regulation

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper presents a hybrid multitrack converter with the capability of partial power regulation. This converter incorporates the merits of the Multitrack converter and Sigma converter. The input power is distributed and transferred by a DC transformer (DCX) and a two-stage circuit, whose front stage is a PWM converter to realize voltage regulation and the next stage works as DCX. The two DCXs are integrated into one transformer. The proposed converter realizes reduced device ratings, partial power regulation and integrated transformer. A 32-75V input, 5V, 20A output isolated dc-dc converter for data center applications is built to verify the effectiveness of the proposed circuit structure. The peak efficiency of 95.1% is achieved at 48V nominal input voltage with 190W/inch3 power density.

Original languageEnglish
Title of host publicationProceedings of the 35th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherIEEE
Publication dateMar 2020
Pages1844-1850
Article number9124223
ISBN (Electronic)9781728148298
DOIs
Publication statusPublished - Mar 2020
Event35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020 - New Orleans, United States
Duration: 15 Mar 202019 Mar 2020

Conference

Conference35th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2020
CountryUnited States
CityNew Orleans
Period15/03/202019/03/2020
SponsorIEEE, IEEE, Power Sources Manufacturers Association
SeriesConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2020-March

Keywords

  • DC transformer
  • DC-DC power conversion
  • Multitrack converter
  • Sigma converter

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