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Design, Modeling, and Analysis of a Compact Planar Transformer

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5 Author(s)
Djuric, S. ; Fac. of Tech. Sci., Univ. of Novi Sad, Novi Sad, Serbia ; Stojanovic, G. ; Damnjanovic, M. ; Radovanovic, M.
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This paper presents a new design of a planar transformer. Over the surface of a flat core, meander-type design was engraved, so that symmetrically adjusted primary and secondary coils, of the same meander-type, can fit into the engraved design. Primary and secondary coils were covered with another flat core consequently forming a compact planar transformer. Windings of primary and secondary coils are printed on both sides of PCB. Conductive stripes of a winding from upper and bottom layer are connected by vias. The transformer was analyzed when the primary and secondary coils were without a core and with a core. High frequency parameters of the transformer were obtained by finite element modeling software and Impedance Analyzer HP4194A in the frequency range from 50 kHz to 1 MHz. The transformer is intended to be used in DC-DC converters (for switching frequency up to several hundred kHz).

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 11 )