Symmetric Air-core Planar Transformer with Partial Electromagnetic Interference Shielding

    公开(公告)号:US20230138281A1

    公开(公告)日:2023-05-04

    申请号:US17515391

    申请日:2021-10-29

    Abstract: A laminate transformer includes a multilayer substrate having at least first, second, third, and fourth metal layers. The second metal layer and the third metal layer are separated by a voltage barrier having a thickness. A first multiloop coil has at least a first loop on the first metal layer and at least a second loop on the second metal layer. A second multiloop coil has at least a third loop on the third metal layer and at least a fourth loop on the fourth metal layer. A partial EMI shield for the first multiloop coil is on the second metal layer. A partial EMI shield for the second multiloop coil is on the third metal layer.

    TRANSFORMER DESIGN WITH BALANCED INTERWINDING CAPACITANCE FOR IMPROVED EMI PERFORMANCE

    公开(公告)号:US20240371800A1

    公开(公告)日:2024-11-07

    申请号:US18773348

    申请日:2024-07-15

    Abstract: An electronic device includes a multilevel lamination structure having a core layer, dielectric layers and conductive features formed in metal layers on or between respective ones or pairs of the dielectric layers. The core layer and the dielectric layers extend in respective planes of orthogonal first and second directions and are stacked along an orthogonal third direction. The conductive features include a first patterned conductive feature having multiple conductive turns in each of a first pair of the metal layers to form a first winding having a first turn and a final turn adjacent to one another in the same metal layer of the first pair, and a second patterned conductive feature having multiple conductive turns in a second pair of the metal layers to form a second winding having a first turn and a final turn.

    TRANSFORMER DESIGN WITH BALANCED INTERWINDING CAPACITANCE FOR IMPROVED EMI PERFORMANCE

    公开(公告)号:US20220415829A1

    公开(公告)日:2022-12-29

    申请号:US17474103

    申请日:2021-09-14

    Abstract: An electronic device includes a multilevel lamination structure having a core layer, dielectric layers and conductive features formed in metal layers on or between respective ones or pairs of the dielectric layers. The core layer and the dielectric layers extend in respective planes of orthogonal first and second directions and are stacked along an orthogonal third direction. The conductive features include a first patterned conductive feature having multiple conductive turns in each of a first pair of the metal layers to form a first winding having a first turn and a final turn adjacent to one another in the same metal layer of the first pair, and a second patterned conductive feature having multiple conductive turns in a second pair of the metal layers to form a second winding having a first turn and a final turn.

    Adaptive spread-spectrum modulation for DC/DC converters

    公开(公告)号:US12218574B2

    公开(公告)日:2025-02-04

    申请号:US17877067

    申请日:2022-07-29

    Abstract: A modulation device may include a variable burst regulator and a current-driven clock generator. The modulation device may include a first output terminal configured to provide a modulated voltage for an operating frequency over a modulation period. The current-driven clock generator may include a second input terminal configured to receive a buffered version of the modulated voltage. The current-driven clock generator may include a second output terminal configured to provide a modulated current during the modulation period. The operating frequency may be proportional to the modulated current. The operating frequency may control the operating frequency over the modulation period.

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