Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A DC-DC Converter Using LTCC NiZnAg

LTCC NiZnAg 이용한 DC-DC 컨버터

  • Kim, Young-Jin (Dept. of Electronic & Electrical & Control & Instrumentation Engineering Hanyang Univ.) ;
  • Kim, Hee-Jun (School of Electrical Engineering & Computer Science Hanyang Univ.)
  • 김영진 (한양대 전자전기제어계측공학과) ;
  • 김희준 (한양대 전자.컴퓨터 공학부)
  • Published : 2005.07.18
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Abstract

An integrated inductor using the low temperature cofiring ceramics(LTCC) NiZnAg was fabricated. The inductor has a sandwitch structure, which consists of 18 turns-and-thin Ag rectangular spiral coils in 2-layers(10-turn & 8-turn in each layer). The two layers of Ag coils are among three thick Ni-Zn ferrite so the inductor has a dimension of 12.70mm$\times$12.70mm and 0.32mm thick. For the fabricated inductor, calculation method of inductance was given and it is confirmed that the calculated value is very close to the measured one. Finally as an application of the LTCC integrated inductor for low power electronic circuits, a LTCC boost DC/DC converter with 1W output power and 500KHz switching frequency using the inductor fabricated was developed. For the converter the maximum efficiency of about 87% was obtained.

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