FIELD SUPPRESSION FEATURE FOR GALVANIC ISOLATION DEVICE

    公开(公告)号:US20240112852A1

    公开(公告)日:2024-04-04

    申请号:US17957875

    申请日:2022-09-30

    CPC classification number: H01F27/324 H01F41/122 H01F2027/329

    Abstract: A microelectronic device includes a galvanic isolation component. The galvanic isolation component includes a lower winding and an upper isolation element over the lower winding. The galvanic isolation component further includes a field suppression structure located interior to the lower winding. The field suppression structure includes a conductive field deflector that is separated from the lower winding by a lateral distance that is half a thickness of the lower winding to twice the thickness of the lower winding. A top surface of the conductive field deflector is substantially coplanar with a bottom surface of the lower winding. The conductive field deflector is electrically connected to a semiconductor material in a substrate. The lower winding is separated from a substrate by a first dielectric layer. The upper isolation element is separated from the lower winding by a second dielectric layer.

    Semiconductor package with underfill between a sensor coil and a semiconductor die

    公开(公告)号:US11024576B1

    公开(公告)日:2021-06-01

    申请号:US16732296

    申请日:2019-12-31

    Abstract: A semiconductor package includes a leadframe including a sensor coil between sensor coil leads and further including a plurality of die leads physically and electrically separated from the sensor coil, and a semiconductor die over the leadframe with die contacts electrically connected to the die leads. The semiconductor die includes a sensor operable to detect magnetic fields created by electrical current through the sensor coil, the semiconductor die operable to output a signal representative of the detected magnetic fields via the die leads. The semiconductor package further includes a dielectric underfill filling a gap between the sensor coil and the semiconductor die, and a dielectric mold compound covering the sensor coil and the dielectric underfill and at least partially covering the semiconductor die and the die leads.

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