A High-Efficiency 4-Phase Series-Parallel Resonant Switched-Capacitor 48-to-3 V DC-DC Converter

Ningchao Lin*, Yuan Hua, Zu Yao Chang, Sijun Du

*Corresponding author for this work

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

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Abstract

This article proposes a novel four-phase series-parallel resonant switched-capacitor (ReSC) 16:1 DC-DC converter topology with 16 GaN switches, 5 flying capacitors, and 1 inductor under soft-switching conditions. The topology provides a large conversion ratio and can serve as the first stage in a two-stage 48-V step-down voltage-regulated module (VRM) for data centers and is expected to generate a 3V intermediate voltage, reducing voltage stress on the second stage. A discrete prototype was made to validate the topology and achieves 96.5% peak efficiency and up to 460 W/in3 power density.

Original languageEnglish
Title of host publication2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
PublisherIEEE
Pages2564-2569
Number of pages6
ISBN (Electronic)9798350316445
DOIs
Publication statusPublished - 2023
Event2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 - Nashville, United States
Duration: 29 Oct 20232 Nov 2023

Publication series

Name2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023

Conference

Conference2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023
Country/TerritoryUnited States
CityNashville
Period29/10/232/11/23

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • DC-DC converter
  • hybrid converter
  • resonant switched-capacitor (ReSC)
  • step-down converter

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