Core and coil structure and method of making the same

Details Core and coil structure and method of making the same Core and coil structure and method of making the same

H - Electricity

01

F

H01F 41/04 (2006.01) H01F 17/00 (2006.01)

Patent

CA 2304304

An inductive device is comprised of a plurality of dielectric wafers (100) having conductive patterns (126) disposed thereon and being formed into a laminate structure. The laminate structure includes a ferromagnetic core (124) encased within the dielectric material (104). The conductive patterns (126) are interconnected using vias (122) to create a conductive structure, such as windings, about the core. During fabrication of the device, the core is pressurized to maintain high-permeability characteristics. As a result, inductive devices such as transformers and inductors can be made having small dimensions and high inductive values.

Un dispositif inductif est composé d'une pluralité de tranches diélectriques (100), sur lesquelles sont situées des configurations conductrices (126), se présentant sous la forme d'une structure stratifiée. Cette structure stratifiée comprend un noyau ferromagnétique (124) encastré à l'intérieur du matériau diélectrique (104). Les configurations conductrices (126) sont reliées les unes aux autres au moyen de trous d'interconnexion (122) afin de créer une structure conductrice, telle que des enroulements, autour du noyau. Pendant la fabrication de ce dispositif, on met le noyau sous pression, de manière à conserver des caractéristiques de perméabilité extrême. Ceci permet de fabriquer des dispositifs inductifs, tels que des transformateurs et des bobines d'induction, présentant des dimensions limitées et des valeurs d'induction élevées.

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