Current detection apparatus
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorJia Liu
Life of this patent
Estimating the term…
Abstract
A current detection apparatus of an embodiment includes a coil pattern, a magnetic field detection element and a shielding layer. The coil pattern is configured with an arc-shaped planar coil and straight line portions parallel to each other extending from an end portion of the arc-shaped planar coil. The magnetic field detection element is arranged away from the coil pattern in a direction orthogonal to a plane of the planar coil and disposed to receive a magnetic field in a first direction generated by the coil pattern. The shielding layer is provided between the coil pattern and the magnetic field detection element and is provided with a slit portion.
Claims6
A current detection apparatus comprising:
- a coil pattern configured with an arc-shaped planar coil and straight line portions parallel to each other extending from an end portion of the arc-shaped planar coil;
- a magnetic field detection element arranged away from the coil pattern in a direction orthogonal to a plane of the planar coil and disposed to receive a magnetic field in a first direction generated by the coil pattern;
- and
- a shielding layer provided between the coil pattern and the magnetic field detection element and comprising a slit portion,
- wherein the slit portion includes an opening portion including a hole provided in a center of the planar coil when the coil pattern is viewed in plan, and at least two or more slits extending from the opening portion.
A current detection apparatus comprising:
- a coil pattern configured with an arc-shaped planar coil and straight line portions parallel to each other extending from an end portion of the arc-shaped planar coil;
- a magnetic field detection element arranged away from the coil pattern in a direction orthogonal to a plane of the planar coil and disposed to receive a magnetic field in a first direction generated by the coil pattern;
- and
- a shielding layer provided between the coil pattern and the magnetic field detection element and comprising a slit portion,
- wherein the coil pattern includes first and second coil patterns, a central axis of a magnetic flux generated by the first coil pattern and a central axis of a magnetic flux generated by the second coil pattern are located on a same axis, and
- the magnetic field detection element is disposed on the same axis between the first and second coil patterns.
Dependencies are inferred from the claim text.