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Switched Capacitor DC-DC Converters: A Survey on the Main Topologies, Design Characteristics, and Applications

Author

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  • Alencar Franco de Souza

    (Institute of System Engineering and Information Technology, Federal University of Itajubá, Itajubá 37500-903, Brazil)

  • Fernando Lessa Tofoli

    (Department of Electrical Engineering, Federal University of São João del-Rei, São João del-Rei 36307-352, Brazil)

  • Enio Roberto Ribeiro

    (Institute of System Engineering and Information Technology, Federal University of Itajubá, Itajubá 37500-903, Brazil)

Abstract

This work presents a review of the main topologies of switched capacitors (SCs) used in DC-DC power conversion. Initially, the basic configurations are analyzed, that is, voltage doubler, series-parallel, Dickson, Fibonacci, and ladder. Some aspects regarding the choice of semiconductors and capacitors used in the circuits are addressed, as well their impact on the converter behavior. The operation of the structures in terms of full charge, partial charge, and no charge conditions is investigated. It is worth mentioning that these aspects directly influence the converter design and performance in terms of efficiency. Since voltage regulation is an inherent difficulty with SC converters, some control methods are presented for this purpose. Finally, some practical applications and the possibility of designing DC-DC converters for higher power levels are analyzed.

Suggested Citation

  • Alencar Franco de Souza & Fernando Lessa Tofoli & Enio Roberto Ribeiro, 2021. "Switched Capacitor DC-DC Converters: A Survey on the Main Topologies, Design Characteristics, and Applications," Energies, MDPI, vol. 14(8), pages 1-33, April.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2231-:d:537609
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    References listed on IDEAS

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    1. González, Ander & Goikolea, Eider & Barrena, Jon Andoni & Mysyk, Roman, 2016. "Review on supercapacitors: Technologies and materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1189-1206.
    2. Miran Rodič & Miro Milanovič & Mitja Truntič & Benjamin Ošlaj, 2018. "Switched-Capacitor Boost Converter for Low Power Energy Harvesting Applications," Energies, MDPI, vol. 11(11), pages 1-29, November.
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    Cited by:

    1. Anna Richelli & Mohamed Salem & Luigi Colalongo, 2021. "A Review of Fully Integrated and Embedded Power Converters for IoT," Energies, MDPI, vol. 14(17), pages 1-22, August.
    2. Aline V. C. Pereira & Marcelo C. Cavalcanti & Gustavo M. Azevedo & Fabrício Bradaschia & Rafael C. Neto & Márcio Rodrigo Santos de Carvalho, 2021. "A Novel Single-Switch High Step-Up DC–DC Converter with Three-Winding Coupled Inductor," Energies, MDPI, vol. 14(19), pages 1-17, October.
    3. Robert Stala & Adam Piłat & Maciej Chojowski & Mikołaj Skowron & Szymon Folmer, 2022. "Thermal and Electric Parameter Analysis of DC–DC Module Based on Resonant Switched Capacitor Converter," Energies, MDPI, vol. 15(19), pages 1-15, September.
    4. Dobroslav Kováč & Tibor Vince & Matej Bereš & Ján Molnár & Jozef Dziak & Patrik Jacko & Irena Kováčová, 2022. "A Universal PSpice Simulation Model of a Switched Buck Voltage Regulator," Energies, MDPI, vol. 15(21), pages 1-19, November.

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