Planar inductor with ferrite layers for DC-DC converter

We fabricated planar inductors with ferrite layers by a screen printing, photolithography, and electroplating process. The screen printing method made it possible to obtain a coil spacing filled with ferrite. In this structure, the perpendicular leakage magnetic flux preferentially passes through th...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on magnetics 2003-07, Vol.39 (4), p.2057-2061
Main Authors: Fukuda, Y., Inoue, T., Mizoguchi, T., Yatabe, S., Tachi, Y.
Format: Article
Language:English
Subjects:
Applied sciences
Coiling
Coils
Conductors
Conductors (devices)
Copper
DC-DC power converters
Eddy current testing
Eddy currents
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Ferrite
Ferrites
Inductors
Inductors and coils
wiring
Lithography
Magnetic flux
Magnetism
Photolithography
Printing
Q factors
Screen printing
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We fabricated planar inductors with ferrite layers by a screen printing, photolithography, and electroplating process. The screen printing method made it possible to obtain a coil spacing filled with ferrite. In this structure, the perpendicular leakage magnetic flux preferentially passes through the coil spacing and bypasses the copper conductor line, a path that is expected to reduce eddy current loss. Trial samples of a planar inductor with ferrite layers achieved a high-quality Q factor of 40-70 at 5 MHz. Magnetic field analysis revealed that the eddy current loss of the conductor line was only 2.4% of total loss.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2003.812708