Microscale magnetic components for the application of DC-DC converters operating in the 1-10 MHz range

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel method to manufacture and assemble a microinductor that is based on flip-chip bonding is described in this article. The microinductor is developed for DC-DC converters operating in the MHz switching frequency. The fabricated inductors have an inductance ranging from 0.3µH to 180µH. An optimum Q-factor of 14 was attained at 1MHz. Cobalt-Copper-iron cores maintained a constant inductance across a 1 kHz-1MHz bandwidth. The thin film laminate minimizes the eddy current loss and the hysteresis loss was negligible. Impedance increases linearly with frequency indicating that parasitic capacitance effects in this frequency range are negligible. The microinductor operated at an efficiency of 92% at 1MHz achieving a power density of 3.75 W/mm3. © 2005 IEEE.

Original languageEnglish
Title of host publicationProceedings - EMAP 2005: 2005 International Symposium on Electronics Materials and Packaging
Pages192-198
Number of pages7
Volume2005
DOIs
Publication statusPublished - 2005
EventEMAP 2005: 2005 International Symposium on Electronics Materials and Packaging - Tokyo, Japan
Duration: 11 Dec 200514 Dec 2005

Conference

ConferenceEMAP 2005: 2005 International Symposium on Electronics Materials and Packaging
CountryJapan
CityTokyo
Period11/12/0514/12/05

Keywords

  • Magnetic MEMS
  • Power supplies
  • DC-DC power conversion
  • materials

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    Flynn, D., Toon, A., & Desmulliez, M. (2005). Microscale magnetic components for the application of DC-DC converters operating in the 1-10 MHz range. In Proceedings - EMAP 2005: 2005 International Symposium on Electronics Materials and Packaging (Vol. 2005, pp. 192-198) https://doi.org/10.1109/EMAP.2005.1598260