Design, Modeling, and Analysis of a Compact Planar Transformer

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 f...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2012-11, Vol.48 (11), p.4135-4138
Main Authors: Djuric, Snezana, Stojanovic, Goran, Damnjanovic, Mirjana, Radovanovic, Milan, Laboure, Eric
Format: Article
Language:English
Subjects:
Coils
Compact planar transformer
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Ferrites
Finite element methods
finite element modeling
high frequency parameters
Inductance
Magnetism
Materials science
Other topics in materials science
Physics
Studies
Transformer cores
Windings
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Description
Summary: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).
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2012.2202642