INDUCTOR AND ELECTRIC POWER SUPPLY USING IT
First Claim
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1. An electronic device comprising:
- a board; and
a power supply circuit that is provided in the board and that supplies a semiconductor device with power, wherein the power supply circuit includes at least an inductor formed in the thickness direction of the board.
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Abstract
An inductor embedded in a printed wiring board includes a conductor extending in the thickness direction of a printed circuit board and a magnetic body that is in contact with the conductor with no gap therebetween. For example, the magnetic body is composed of ferrite having a cylindrical tubular shape. The conductor is composed of a copper film formed by plating on an inner peripheral surface of the cylindrical tubular ferrite. The inductor is inserted in the thickness direction of the printed wiring board.
35 Citations
5 Claims
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1. An electronic device comprising:
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a board; and a power supply circuit that is provided in the board and that supplies a semiconductor device with power, wherein the power supply circuit includes at least an inductor formed in the thickness direction of the board. - View Dependent Claims (2, 3, 4, 5)
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Specification