DocumentCode :
1525777
Title :
Batch-type millimeter-size transformers for miniaturized power applications
Author :
Amalou, Farid ; Bornand, Etienne L. ; Gijs, Martin A M
Author_Institution :
Inst. of Microsystems, Swiss Federal Inst. of Technol., Lausanne, Switzerland
Volume :
37
Issue :
4
fYear :
2001
fDate :
7/1/2001 12:00:00 AM
Firstpage :
2999
Lastpage :
3003
Abstract :
We have developed a novel batch-type technology for making three-dimensional (3-D) millimeter-sized transformers for ultrasmall low-power (0.1 to 1 Watt) applications. The technology uses the 3-D micropatterning of ferrite wafers by powder blasting to form the magnetic cores of the inductive devices, and combines these cores with electrical windings made by flex-foil printed circuit board technology. Microfabrication and assembly of the parts can be done in a batch process on a wafer/foil level, opening the way to further size reduction of the components. We have measured the inductive and resistive properties of our devices as a function of frequency and device geometry. The results clearly show the high potential of our technology for power applications in which small-size is important
Keywords :
batch processing (industrial); ferrite devices; low-power electronics; power transformers; transformer cores; 0.1 to 1 W; 3D micropatterning; assembly; batch processing; electrical winding; ferrite wafer; flex-foil printed circuit board technology; inductive device; inductive properties; magnetic core; microfabrication; miniaturized low-power applications; powder blasting; resistive properties; three-dimensional millimeter-size transformer; Amorphous magnetic materials; Ferrites; Frequency; Inductance; Inductors; Magnetic cores; Magnetic materials; Printed circuits; Space technology; Transformer cores;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/20.947052
Filename :
947052
Link To Document :
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