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US 2022/0018879 A1Published application
Integrated current sensor with magnetic flux concentrators
AssigneeTexas Instruments Incorporated
InventorsDok Won LEE, Jo BITO, Keith Ryan GREEN
Life of this patent
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Abstract
A packaged current sensor includes a lead frame, an integrated circuit, an isolation spacer, a first magnetic concentrator, and a second magnetic concentrator. The lead frame includes a conductor. The isolation spacer is between the lead frame and the integrated circuit. The first magnetic concentrator is aligned with the conductor. The second magnetic concentrator is aligned with the conductor.
Claims20
A packaged current sensor, comprising:
- a lead frame comprising a conductor;
- an integrated circuit;
- an isolation spacer between the lead frame and the integrated circuit;
- and
- a magnetic concentrator aligned with the conductor.
2 more elements
A current sensor, comprising:
- a lead frame comprising a conductor, wherein the conductor comprises:
- a current input segment;
- and
- a current output segment;
- an integrated circuit comprising a Hall effect sensor;
- an isolation spacer between the lead frame and the integrated circuit;
- a first magnetic concentrator aligned with the current input segment and overlapping the Hall effect sensor;
- and
- a second magnetic concentrator aligned with the current output segment.
6 more elements
A current sensor, comprising:
- a lead frame comprising a conductor, wherein the conductor comprises:
- a current input segment;
- and
- a current output segment;
- an integrated circuit comprising:
- a first Hall effect sensor;
- a second Hall effect sensor;
- a third Hall effect sensor;
- and
- a fourth Hall effect sensor;
- and
- an isolation spacer between the lead frame and the integrated circuit;
- and
- a first magnetic concentrator and a second magnetic concentrator formed as a metal layer on the integrated circuit, the first magnetic concentrator overlapping the current input segment, the first Hall effect sensor, and the second Hall effect sensor, and the second magnetic concentrator overlapping the current output segment, the third Hall effect sensor, and the fourth Hall effect sensor.
11 more elements
Dependencies are inferred from the claim text.