Patent ID: 7489222
Filing Date: 2009-02-10
Classification: H01F,H01L

Abstract:
1. A microminiature power converter comprising: a semiconductor device having an integrated circuit; and a thin film magnetic induction device operatively connected to the semiconductor device, wherein the thin film magnetic induction device includes: a magnetic insulating substrate having a first principal plane and a second principal plane, a plurality of first through-holes, and a plurality of second through-holes; a solenoid coil comprising a conductor extending on the first principal plane of the magnetic insulating substrate, passing through the through holes and extending on the second principal plane of the magnetic insulating substrate to form a coil configuration; second connection conductors in the second through-holes; and a plurality of pairs of electrodes connected through the second connection conductors and formed opposing each other on the first principal plane and the second principal plane, wherein the second through-holes are situated along a peripheral region of the magnetic insulating substrate, wherein the pairs of electrodes are arranged collectively only at one side or two opposing sides of the magnetic insulating substrate, extending parallel to an axis of the solenoid coil.