Fabrication of a Low Profile Planar Transformer Using a Dual PCB Approach

verfasst von

Eike Christian Fischer, Tim Nils Bierwirth, Folke Dencker, Marc Christopher Wurz

Abstract

The high frequencies in GaN- or SiC-based switching devices allow for decreased component size reducing costs, weight and space. In case of transformers, this trend lead to the development of planar designs integrating the core in the circuit board and using the copper traces as windings. While showing good performance, these designs mostly suffer from high costs or complex technologies. The presented transformer on the other hand offers an intentionally simple design based on two-layer boards. The ferrite core is made from sheet material from DMEGC that is laser cut to create a customized shape and can be stacked to reach the desired inductance in the range of five to 25 µH. The transformer shows best results in a frequency range of 100 to 800 kHz with a resulting Q-factor of over 20 and a coupling coefficient of up to 98,5%.

Organisationseinheit(en)

Institut für Mikroproduktionstechnik

Typ

Aufsatz in Konferenzband

Seiten

483-486

Anzahl der Seiten

4

Publikationsdatum

2021

Publikationsstatus

Veröffentlicht

ASJC Scopus Sachgebiete

Hardware und Architektur, Elektrotechnik und Elektronik, Elektronische, optische und magnetische Materialien