Static performance and parasitic analysis of tapped-inductor converters

Zhang Hai Shi, Ka Wai Eric Cheng, Siu Lau Ho

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)


Tapped-inductor provides the property of wider voltage conversion range similar to an auto-transformer and can be integrated to a switched-mode power converter to enhance the power conversion efficiency. Its low component count has attracted applications with extreme voltage conversion ratios. Circuit family is presented and a general tapping concept for diode, transistor or both has been described. Its boost converter version is used as an example for the study. Detailed comparisons between tapped-inductor boost and conventional boost are carried out, which include the comparison of voltage gain, component stress and efficiency with the presence of the parasitic components. Experimental results present solid verification of the analysis of performance of tapped-inductor boost converter under extreme conversion ratios. The proposed study has introduced formulations for both transistor and diode tapping and can be extended to other tapped-inductor DC-DC converters as a family of circuits, and thus provides an understanding of the effect of the parasitic components that affect the efficiency under extreme conversion ratio.
Original languageEnglish
Pages (from-to)366-375
Number of pages10
JournalIET Power Electronics
Issue number2
Publication statusPublished - 26 Feb 2014

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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