https://doi.org/10.1051/epjconf/20147506006
Thin-Film Microtransformer for High Frequency Power Applications
1 Würth Elektronik eiSos GmbH Co. KG, Parkring 29, 85748 Garching, Germany .
2 IMPT (Institute for Micro Production Technology), Leibniz Universität Hannover, An der Universität 2, 30823 Garbsen, Germany.
a Corresponding author: dragan.dinulovic@we-online.de
Published online: 3 July 2014
This paper describes a development of a microtransformer device fabricated using thin film technology. The device is designed for higher switching frequencies beyond to 50 MHz power applications. A especially by the microtransformer is a design, which allows wide flexibility of a device by choosing a different values of an inductance and of a windings ratio. The microtransformer device is integrated on silicon substrate consisting of a closed magnetic core and six coils. Both, primary and secondary device side consist three coils. Therefore, this design allows using of a device for different switching frequencies. As a magnetic material for transformer core a permalloy NiFe45/55 was chosen.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
