An LTCC Inductor Embedding NiZn Ferrite and Its Application

NiZn 페라이트를 내장한 LTCC 인덕터 및 응용

  • 원유준 (한양대학교 전자전기제어계측공학과) ;
  • 김희준 (한양대학교 전자컴퓨터공학부)
  • Published : 2006.10.01

Abstract

An integrated inductor using the low-temperature co-fired ceramics(LTCC) technology for low-power electronics was fabricated. In the inductor NiZn ferrite sheet$({\mu}_r=230)$, was embedded to increase inductance. The inductor has Ag spiral coil with 14 turns$(7turns{\times}2layers)$, a dimension of 0.6mm in width, 10um in thickness, and 0.15mm pitch. To evaluate the inductance, including the parasitic resistance, the fabricated inductor was calculated and measured. It was confirmed that calculated values were very close to the measured values. Finally as an application of the LTCC integrated inductor to low power electronic circuits, a LTCC boost DC/DC converter with 1W output power and up to 0.5MHz switching frequency using the inductor fabricated was developed.

References

  1. S. Scmtom et al., 'Manufacture of Embedded Passive Components into LTCC Systems', in Proc. Int. Symp. Microelectronics, San Diego, CA, 1998, pp, 459-466
  2. T. Zawada et al., 'Low Power AC-DC converter with an integrated LTCC inductor', in Proc. IMAPs, Rzeszow, Poland, 2001, pp. 275-278
  3. C. Y. Kim, H. J. Kim, J .R. Kim, 'An Integrated L TCC Inductor', IEEE Trans. Magnetics, vol. 41, pp. 3556- 3558, Oct. 2005 https://doi.org/10.1109/TMAG.2005.855184
  4. R. E. jones Jr, 'Analysis Of The Efficiency And Inductance Of Multiturn Thin Film Mgnetic Recording Head', IEEE Trans. Magnetics, vol. MAG-14, NO.5, pp.509-511, Sep. 1978 https://doi.org/10.1109/TMAG.1978.1059967
  5. P. C. Ciureanu, 'Efficiency And Inductance Analysis Of A Three Region Thin Film Head', IEEE Trans. Magnetics, vol. MAG-22, no. 1, pp26-32, Jan. 1986 https://doi.org/10.1109/TMAG.1986.1064267
  6. T. Sate, H. Tomita, A. Sawabe, T. Inoue, T. Mizoguchi, M. Sahashi, 'A Magnetic Thin Film Inductor And Its Application To A MHZ Switching DC-DC Converter', IEEE Trans. magnetics, vol. 30, no. 2, pp217-223, Mar. 1994 https://doi.org/10.1109/20.312261
  7. Richard M. Bozarth, Ferromagnetism, IEEE press, 1993