Small-Signal Analysis of Multi-Phase Interleaved Boost Converter with Coupled Inductor

  • Shin, Hwi-Beom (School of Electrical & Electronic Engineering, Gyeongsang National University) ;
  • Jang, Eun-Sung (School of Electrical & Electronic Engineering, Gyeongsang National University) ;
  • Chung, Se-Kyo (School of Electrical & Electronic Engineering, Gyeongsang National University) ;
  • Lee, Hyun-Woo (School of Electrical Engineering & Computer Science, Kyungnam University)
  • Published : 2005.07.04

Abstract

This paper addresses the small-signal analysis of the multi-phase interleaved boost converter with the coupled inductors operated in the continuous inductor current mode. The generalized and analytical expressions for the transfer functions of interest are derived for various inductor couplings. The dynamic characteristics are analyzed according to the inductor couplings and verified experimentally. The proposed frequency models will be very useful to design the dynamic controllers of the multi-phase interleaved boost converters.

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