PACKAGE EMBEDDED MAGNETIC POWER TRANSFORMERS FOR SMPS

    公开(公告)号:US20220093314A1

    公开(公告)日:2022-03-24

    申请号:US17025537

    申请日:2020-09-18

    Abstract: Embodiments disclosed herein include power transformers for microelectronic devices. In an embodiment, a power transformer comprises a magnetic core that is a closed loop with an inner dimension and an outer dimension, and a primary winding around the magnetic core. In an embodiment, the primary winding has a first number of first turns connected in series around the magnetic core. In an embodiment, a secondary winding is around the magnetic core, and the secondary winding has a second number of second turns around the magnetic core. In an embodiment, individual ones of the second turns comprise a plurality of secondary segments connected in parallel.

    COAXIAL MAGNETIC INDUCTORS WITH PRE-FABRICATED FERRITE CORES

    公开(公告)号:US20210104475A1

    公开(公告)日:2021-04-08

    申请号:US16596328

    申请日:2019-10-08

    Abstract: Embodiments include an inductor, a method to form the inductor, and a semiconductor package. An inductor includes a plurality of plated-through-hole (PTH) vias in a substrate layer, and a plurality of magnetic interconnects with a plurality of openings in the substrate layer. The openings of the magnetic interconnects surround the PTH vias. The inductor also includes an insulating layer in the substrate layer, a first conductive layer over the PTH vias, magnetic interconnects, and insulating layer, and a second conductive layer below the PTH vias, magnetic interconnects, and insulating layer. The insulating layer surrounds the PTH vias and magnetic interconnects. The magnetic interconnects may have a thickness substantially equal to a thickness of the PTH vias. The magnetic interconnects may be shaped as hollow cylindrical magnetic cores with magnetic materials. The magnetic materials may include ferroelectric, conductive, or epoxy materials. The hollow cylindrical magnetic cores may be ferroelectric cores.

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