Microminiature power converter and thin film magnetic induction device thereof
First Claim
1. A microminiature power converter comprising:
- a semiconductor device having an integrated circuit; and
a thin film magnetic induction device operatively connected to the semiconductor device,wherein the thin film magnetic induction device includes;
a magnetic insulating substrate having a first principal plane and a second principal plane, a plurality of first through-holes, and a plurality of second through-holes;
a solenoid coil comprising a conductor extending on the first principal plane of the magnetic insulating substrate, passing through the through holes and extending on the second principal plane of the magnetic insulating substrate to form a coil configuration;
second connection conductors in the second through-holes; and
a plurality of pairs of electrodes connected through the second connection conductors and formed opposing each other on the first principal plane and the second principal plane,wherein the second through-holes are situated along a peripheral region of the magnetic insulating substrate,wherein the pairs of electrodes are arranged collectively only at one side or two opposing sides of the magnetic insulating substrate, extending parallel to an axis of the solenoid coil.
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Accused Products
Abstract
A microminiature power converter includes a thin film magnetic induction device including a ferrite substrate and a solenoid coil conductor extending along the first and second principal planes of the substrate with the conductor extending through through-holes formed in the substrate to form a coil configuration. Electrodes are positioned near the peripheral region of the substrate and are collectively arranged at least one along the direction parallel to the axis of the solenoid coil formed by the conductor. The length of the coil can be increased to increase the inductance value of the coil. Gaps or grooves are provided near or in the peripheral region of the ferrite substrate to reduce induced voltage appearing in the electrodes.
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Citations
20 Claims
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1. A microminiature power converter comprising:
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a semiconductor device having an integrated circuit; and a thin film magnetic induction device operatively connected to the semiconductor device, wherein the thin film magnetic induction device includes; a magnetic insulating substrate having a first principal plane and a second principal plane, a plurality of first through-holes, and a plurality of second through-holes; a solenoid coil comprising a conductor extending on the first principal plane of the magnetic insulating substrate, passing through the through holes and extending on the second principal plane of the magnetic insulating substrate to form a coil configuration; second connection conductors in the second through-holes; and a plurality of pairs of electrodes connected through the second connection conductors and formed opposing each other on the first principal plane and the second principal plane, wherein the second through-holes are situated along a peripheral region of the magnetic insulating substrate, wherein the pairs of electrodes are arranged collectively only at one side or two opposing sides of the magnetic insulating substrate, extending parallel to an axis of the solenoid coil. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A microminiature power converter comprising:
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a semiconductor device having an integrated circuit; and a thin film magnetic induction device operatively connected to the semiconductor device, wherein the thin film magnetic induction device includes; a magnetic insulating substrate having a first principal plane and a second principal plane, a plurality of first through-holes, and a plurality of second through-holes; a solenoid coil comprising a conductor extending on the first principal plane of the magnetic insulating substrate, passing through the through holes and extending on the second principal plane of the magnetic insulating substrate to form a coil configuration; second connection conductors in the second through-holes; and a plurality of pairs of electrodes connected through the second connection conductors and formed opposing each other on the first principal plane and the second principal plane, wherein the second through-holes are situated along a peripheral region of the magnetic insulating substrate, wherein the magnetic insulating substrate has at least one of gaps or grooves around the peripheral region thereof to reduce induced voltage between the pairs of electrodes. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A thin film magnetic induction device for a microminiature power converter, the induction device comprising:
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a magnetic insulating substrate having a first principal plane and a second principal plane, a plurality of first through-holes, and a plurality of second through-holes; a solenoid coil comprising a conductor extending on the first principal plane of the magnetic insulating substrate, passing through the through holes and extending on the second principal plane of the magnetic insulating substrate to form a coil configuration; second connection conductors in the second through-holes; and a plurality of pairs of electrodes connected through the second connection conductors and formed opposing each other on the first principal plane and the second principal plane, wherein the second through-holes are situated along a peripheral region of the magnetic insulating substrate, wherein the pairs of electrodes are arranged collectively only at one side or two opposing sides of the magnetic insulating substrate, extending parallel to an axis of the solenoid coil. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification