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US 7,605,580 B2Granted
Integrated hybrid current sensor
AssigneeInfineon Technologies Austria AG
InventorBernhard Strzalkowski
Life of this patent
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Abstract
A sensor arrangement for measuring current is disclosed. The sensor arrangement includes a substrate, at least one Hall element integrated in or arranged on the substrate, a first coil that is spaced apart from a surface of the substrate in a vertical direction, a second coil that is spaced apart in a vertical direction from the first coil, and an isolation layer that is arranged between the first coil and the second coil.
Claims27
A sensor arrangement comprising:
- a substrate;
- a first coil spaced apart from a surface of the substrate in a vertical direction, wherein the first coil comprises a primary winding for carrying a primary current generating a magnetic field;
- a second coil spaced apart in the vertical direction from the first coil, wherein the second coil comprises a secondary winding magnetically coupled with the primary winding and providing a first signal dependent on the primary current;
- at least one Hall element integrated in or arranged on the substrate, wherein the Hall element is arranged such that it is pervaded by the magnetic field of the primary current for providing a second signal depending on the primary current;
- an isolation layer arranged between the first coil and the second coil;
- and
- an evaluation circuit for determining a measurement signal representing the primary current from a first signal and a second signal.
4 more elements
A sensor arrangement comprising:
- a substrate;
- at least one magnetic sensor element integrated in or arranged on the substrate;
- a first coil spaced apart from a surface of the substrate in a vertical direction, the first coil comprising a primary winding for carrying a primary current generating a magnetic field;
- a second coil spaced apart in the vertical direction from the first coil, the second coil comprising a secondary winding magnetically coupled with the primary winding and providing a first signal dependent on the primary current, wherein the magnetic sensor element is arranged such that it is pervaded by the magnetic field of the primary current for providing a second signal depending on the primary current;
- an isolation layer arranged between the first coil and the second coil;
- and
- an evaluation circuit for determining a measurement signal representing the primary current from the first signal and the second signal.
4 more elements
Dependencies are inferred from the claim text.