Split-phase control: Achieving complete soft-charging operation of a dickson switched-capacitor converter

Yutian Lei, Ryan May, Robert C.N. Pilawa-Podgurski

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

Abstract

Switched-capacitor (SC) converters are gaining popularity due to their high power density and suitability for on-chip integration. Soft-charging techniques can be used to eliminate the current transient during the phase switching instances, and improve the power density and efficiency of SC converters. In this paper, we propose a split-phase control scheme that enables the Dickson converter to achieve complete soft-charging operation, which is not possible using the conventional two-phase control. An analytical method is extended to understand and design split-phase controlled Dickson converters. The proposed technique and analysis are verified by both simulation and experimental results. An 8-to-1 step-down Dickson converter is built to demonstrate the reduction in output impedance and improvement in efficiency as a result of the split-phase controlled soft-charging operation.

Original languageEnglish (US)
Title of host publication2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
PublisherIEEE Computer Society
ISBN (Print)9781479921478
DOIs
StatePublished - Jan 1 2014
Event2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014 - Santander, Spain
Duration: Jun 22 2014Jun 25 2014

Publication series

Name2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014

Other

Other2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014
Country/TerritorySpain
CitySantander
Period6/22/146/25/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Modeling and Simulation

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