Patent ID: 8018315

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, including: a substrate, and a magnetic core layer formed over said substrate from a magnetic alloy including iron, cobalt, phosphorous, and vanadium or tungsten, wherein a content of said vanadium or tungsten is at least one part per million, a content of said cobalt is in a range of 1.8 to 4.5 atomic percent, a content of said phosphorus is in a range of 20.1 to 30 atomic percent, and a content of said iron is substantially a remaining proportion of said magnetic alloy; 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.