Load Characteristics of a Spiral Coil Type Thin Film Microtransformer

K. Yamaguchi; E. Sugawara; O. Nakajima; H. Matsuki; K. Murakami

doi:10.1109/20.281138

Load Characteristics of a Spiral Coil Type Thin Film Microtransformer

K. Yamaguchi, E. Sugawara, O. Nakajima, H. Matsuki, K. Murakami

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

Abstract

A spiral coil type thin film micro-transformer with the size of 2.4 x 3.1 mm²was fabricated using photolithography techniques for application in mega-hertz region switching regulators. An amorphous magnetic film of a multilayered CoNbZr/Si02 was used as magnetic core. Load characteristics were measured at 10 MHz. A comparatively high efficiency of 67% and an acceptable excitation current of 25 mA were obtained in spite of the small size of the microtransformer.

Original language	English
Pages (from-to)	3207-3209
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	29
Issue number	6
DOIs	https://doi.org/10.1109/20.281138
Publication status	Published - 1993 Nov

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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AU - Nakajima, O.

AU - Matsuki, H.

AU - Murakami, K.

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AB - A spiral coil type thin film micro-transformer with the size of 2.4 x 3.1 mm2was fabricated using photolithography techniques for application in mega-hertz region switching regulators. An amorphous magnetic film of a multilayered CoNbZr/Si02 was used as magnetic core. Load characteristics were measured at 10 MHz. A comparatively high efficiency of 67% and an acceptable excitation current of 25 mA were obtained in spite of the small size of the microtransformer.

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Load Characteristics of a Spiral Coil Type Thin Film Microtransformer

Abstract

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