Patent ID: 11948721
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An apparatus comprising:
a laminate including:
a dielectric layer having a first surface and a second surface opposed to the first surface;
a first conductive layer forming a first transformer coil overlying the first surface of the dielectric layer; and
a second conductive layer forming a second transformer coil overlying the second surface of the dielectric layer;

a first magnetic layer over the first conductive layer,
wherein a first edge surface of the first magnetic layer is coplanar with a first edge surface of the laminate, and
wherein a second edge surface of the first magnetic layer is coplanar with a second edge surface of the laminate; and
a second magnetic layer over the second conductive layer,
wherein a first edge surface of the second magnetic layer is coplanar with the first edge surface of the laminate, and
wherein a second edge surface of the second magnetic layer is coplanar with the second edge surface of the laminate; and
wherein the first magnetic layer and the second magnetic layer are configured to confine and focus flux between the first transformer coil and the second transformer coil to increase an effective inductance between the first transformer coil and the second transformer coil by at least a factor of two.