Microconverter and laminated magnetic-core inductor

Details Microconverter and laminated magnetic-core inductor Microconverter and laminated magnetic-core inductor

2005-04-26

2005-04-26

Nguyen, Tuyen T (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S192000, C361S760000, C257S531000

Reexamination Certificate

active

06885278

ABSTRACT:
A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.

REFERENCES:
patent: 4845452 (1989-07-01), Sasaki et al.
patent: 5027255 (1991-06-01), Zeitlin et al.
patent: 5225969 (1993-07-01), Takaya et al.
patent: 6362525 (2002-03-01), Rahim
patent: 6456183 (2002-09-01), Basteres et al.
patent: 6731521 (2004-05-01), Yasumura

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