High-frequency thin-film power inductors and transformers

D. K.W. Cheng, Kin Wing Kwok, W. K. Mo

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

1 Citation (Scopus)


In order to implement very low profile magnetic components, high frequency thin-film inductors and transformers are developed by depositing thin film of copper upon ferrite substrates and use in micro-power level. The operating frequency for the fabricated thin-film samples can be as high as 1 MHz since loss due to skin effect is still small at this frequency. Circuit simulations are provided to determine the behaviour of thin-film inductor. Furthermore, the value of inductance and Q-factor can be evaluated by the equivalent circuit model of thin film inductor. Discrepancies between the calculated and measured values are investigated and explained. Performance on voltage step up/down for the thin-film transformer is explained against different winding layouts. Suggestions on different areas to improve the performance the thin-film samples are presented.
Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
PublisherPubl by IEEE
Number of pages6
ISBN (Print)0780308913
Publication statusPublished - 1 Dec 1993
EventProceedings of the 19th International Conference on Industrial Electronics, Control and Instrumentation - Maui, Hawaii, United States
Duration: 15 Nov 199318 Nov 1993


ConferenceProceedings of the 19th International Conference on Industrial Electronics, Control and Instrumentation
Country/TerritoryUnited States
CityMaui, Hawaii

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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