Multistack Switched-Capacitor Architecture with Coupled Magnetics for 48V-to-1V VRM

Ping Wang, Daniel Zhou, David Giuliano, Minjie Chen, Yenan Chen

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

Abstract

This paper presents the design and analysis of a family of multistack switched-capacitor architecture and coupled magnetics for 48 V-to-l V point-of-load voltage regulation mod-ules (VRMs). The architecture uses multiple stages of unregulated switched-capacitor cells to generate multiple layers of cascaded terminals with reduced voltage levels. The reduced voltage levels are loaded by switched-mode power converters controlled as current sources to perform voltage regulation and soft charging. Switches of the switched-capacitor cells and the current source cells are merged to reduce the component count and improve the performance. The magnetic components in the current source cells are coupled and combined. The effectiveness of the topology family is verified by simulation and experimental results.

Original languageEnglish (US)
Title of host publication2022 IEEE 23rd Workshop on Control and Modeling for Power Electronics, COMPEL 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665410816
DOIs
StatePublished - 2022
Event23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022 - Tel-Aviv, Israel
Duration: Jun 20 2022Jun 23 2022

Publication series

NameProceedings of the IEEE Workshop on Computers in Power Electronics, COMPEL
Volume2022-June
ISSN (Print)1093-5142

Conference

Conference23rd IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2022
Country/TerritoryIsrael
CityTel-Aviv
Period6/20/226/23/22

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • coupled inductor
  • multicell topology
  • point-of-load
  • switched capacitor circuit
  • voltage regulation module

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