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Multi-Phase Series Capacitor Buck Converter with Phase Shedding for Wide Operating Range

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2025, 30(11), pp.259~267
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : September 23, 2025
  • Accepted : October 30, 2025
  • Published : November 28, 2025

Jung Heon Hyun 1 Yoo-Seop Kim 1 Yeong-Jun Choi 1

1제주대학교

Accredited

ABSTRACT

The multi-phase Series Capacitor(SC) buck converter offers several advantages such as reducing voltage stress on switching devices, a high step-down conversion ratio, and inductor current balancing due to the series capacitor. However, as the number of phases increases, the operating range of conventional converters to perform inductor current balancing is proportionally reduced. In this paper, a multi-phase SC buck converter with an auxiliary switch is proposed to enable phase shedding. The proposed converter achieves a wider operating range than conventional converters while achieving inductor current balancing and linear voltage gain through phase shedding. The effectiveness of the proposed converter is verified by PLECS simulations.

Citation status

* References for papers published after 2024 are currently being built.

This paper was written with support from the National Research Foundation of Korea.