Patent ID: 7544995

Claim:
A power converter, comprising: a power train, including: a switch configured to conduct for a duty cycle and provide a regulated output characteristic at an output of said power converter, and a micromagnetic device, interposed between said switch and said output of said power converter, formed on a substrate, including: a first insulating layer formed above said substrate, a first seed layer formed above said first insulating layer, a first conductive winding layer selectively formed above said first seed layer, a second insulating layer formed above said first conductive winding layer, a first magnetic core layer formed above said second insulating layer, a third insulating layer formed above said first magnetic core layer, a second magnetic core layer formed above said third insulating layer, a fourth insulating layer formed above said second magnetic core layer, a second seed layer formed above said fourth insulating layer, and a second conductive winding layer formed 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; a controller configured to provide a signal to control said duty cycle of said switch; and a driver configured to provide a drive signal to said switch as a function of said signal from said controller.