Planar magnetic device
AssigneeKabushiki Kaisha Toshiba
InventorsToshiro Sato, Tetsuhiko Mizoguchi
Life of this patent
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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.
Claims31
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.
A planar magnetic device used as a power supply, comprising:
- 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.
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 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.
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, wherein respective ends of each of said plurality of sub-conductor lines are electrically connected to each other at respective nodes.
A planar magnetic device used as a power supply, comprising:
- 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.
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, 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.
Dependencies are inferred from the claim text.