Patent ID: 7955868

Claim:
A method of forming a micromagnetic device on a substrate, comprising: forming a trench in said substrate; forming a first insulating layer above said substrate within said trench; forming a first seed layer above said first insulating layer; forming a first conductive winding layer above said first seed layer; forming a second insulating layer above said first conductive winding layer; forming a first magnetic core layer above said second insulating layer; forming a protective layer above said first magnetic core layer; forming a third insulating layer above said protective layer; forming a second magnetic core layer above said third insulating layer; forming a fourth insulating layer above said second magnetic core layer; forming a second seed layer above said fourth insulating layer; and forming a second conductive winding layer above said second seed layer and in vias to said first conductive winding layer, said first conductive winding layer and said second conductive winding layer forming a winding for said micromagnetic device.