Patent ID: 8824161
Filing Date: 2014-09-02
Classification: A61N,H01F,H01L

Abstract:
1. A planar transformer assembly integrated within a high voltage circuit of an implantable cardioverter defibrillator, the circuit being formed in a wafer level package, the wafer level package comprising a polymer component layer, in which one or more active devices and passive components of the circuit are embedded, and a plurality of routing layers overlaying the component layer, the routing layers having conductive runners forming electrical couplings for the active devices and passive components, and the assembly comprising: a primary winding and one or more secondary windings being formed in the plurality of routing layers; and a magnetic core comprising a first part embedded in the component layer and second part bonded to a surface of the wafer level package, the surface overlaying the plurality of routing layers, such that the routing layers are sandwiched between the component layer and the second part of the core.