Planar magnetic device
First Claim
Patent Images
1. A planar magnetic device used as a power supply, comprising:
- at least one planar coil formed of a spiral coil conductor line, said spiral coil conductor line being divided into a plurality of sub-conductor lines;
two insulating layers sandwiching said at least one planar coil; and
two soft-magnetic layers sandwiching said insulating layers.
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Abstract
A planar magnetic device in which the high-frequency loss in the coil conductor can be reduced. The device comprises a planar coil formed of a coil conductor constituted by a plurality of conductor lines. The coil conductor is provided in the form of a spiral. The planar coil is interposed between two insulating layers which are sandwiched between two soft-magnetic layers.
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Citations
31 Claims
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1. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a spiral coil conductor line, said spiral coil conductor line being divided into a plurality of sub-conductor lines; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a coil conductor consisting of a plurality of sub-conductor lines; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers. - View Dependent Claims (27)
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28. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a spiral coil conductor line, said spiral coil conductor line being divided into a plurality of sub-conductor lines wherein; said at least one planar coil formed of a spiral conductor line is formed as a rectangular spiral planar coil formed of a coil conductor line which has a long side conductor line and a short side conductor line; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers, wherein each of said two soft-magnetic layers is made of uniaxial anisotropic material and has a hard axis of magnetization and an easy axis of magnetization, said long side conductor line extends along said easy axis of magnetization and is divided into a plurality of sub-conductor lines, and said short side conductor line extends along said hard axis of magnetization.
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29. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a spiral coil conductor line, said spiral coil conductor line being divided into a plurality of sub-conductor lines; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers, wherein respective ends of each of said plurality of sub-conductor lines are electrically connected to each other at respective nodes.
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30. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a coil conductor consisting of a plurality of sub-conductor lines; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers, wherein respective ends of each of said plurality of sub-conductor lines are electrically connected to each other at respective nodes.
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31. A planar magnetic device used as a power supply, comprising:
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at least one planar coil formed of a spiral coil conductor line, said spiral coil conductor line being divided into a plurality of sub-conductor lines, respective ends of each of said plurality of sub-conductor lines being electrically connected to each other at respective nodes, wherein said at least one planar coil is formed as a rectangular spiral planar coil formed of a coil conductor line which has a long side conductor line and a short side conductor line; two insulating layers sandwiching said at least one planar coil; and two soft-magnetic layers sandwiching said insulating layers, wherein each of said two soft-magnetic layers is made of uniaxial anisotropic material and has a hard axis of magnetization and an easy axis of magnetization, said long side conductor line extends along said easy axis of magnetization and is divided into a plurality of sub-conductor lines, and said short side conductor line extends along said hard axis of magnetization.
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Specification