Interleaved switched-capacitor converters with adaptive control

Siew Chong Tan, Sitthisak Kiratipongvoot, Svetlana Bronstein, Adrian Ioinovici, Y. M. Lai, Chi Kong Tse

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

11 Citations (Scopus)

Abstract

The switched-capacitor converters are ideal switching-mode power supplies for consumers portable electronic devices due to their light weight, small size, and high power density. However, they suffer from a discontinuous input current waveform with large di/dt, which leads to significant electromagnetic interference (EMI) emission. This paper proposes a configuration of switched-capacitor converters connected in parallel, with their inputs and outputs interleaved and adaptively controlled. The interleaving operation is performed by using an original type of control in which both the capacitors' charging time Ton and switching frequency are adjusted to get the line and load regulation. It is shown that, for a given range of variation of the supply voltage and load, there always exists a solution [Ton, TS] assuring both output voltage regulation and a perfect interleaving. Experimental results are provided to validate the feasibility of the proposed scheme. Precise interleaving and good line and load regulation are maintained for all the designated range, including the transient times.
Original languageEnglish
Title of host publication2010 IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Proceedings
Pages2725-2732
Number of pages8
DOIs
Publication statusPublished - 20 Dec 2010
Event2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010 - Atlanta, GA, United States
Duration: 12 Sep 201016 Sep 2010

Conference

Conference2010 2nd IEEE Energy Conversion Congress and Exposition, ECCE 2010
CountryUnited States
CityAtlanta, GA
Period12/09/1016/09/10

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment

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