THIN FILM INDUCTOR WITH EXTENDED YOKES
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Accused Products
Abstract
A thin film inductor with top and bottom pole pieces that are mechanically connected to each other at at least two via zones, to create a magnetically permeable yoke that defines at least one interior space. Enclosed portion(s) of a winding member pass through the interior space(s) of the yoke. The enclosed portion(s) of the winding member define an axial direction and a transverse direction. The pole pieces extend beyond the via zones in the axial and/or transverse direction. The extended pole pieces improve magnetic performance of the thin film inductor, by effectively moving pole piece edges away from locations of high magnetic flux density.
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Citations
17 Claims
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1-12. -12. (canceled)
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13. A thin film inductor where a stacking direction of the layers of the thin film defines a vertical direction, the inductor comprising:
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a rectangular bottom yoke portion; a rectangular top yoke portion; a magnetic via zone set including a plurality of magnetic via zones, with each magnetic via zone of the magnetic via zone set being structured, sized, shaped, connected and/or located to form a low magnetic reluctance path between the top yoke portion and the bottom yoke portion; a first current carrier portion; and a first electrical via; wherein; the via zones of the magnetic via zone set are elongated in an axial direction and at least substantially aligned with each other in the axial direction; the via zones of the magnetic via zone set are spaced apart from each other in a transverse direction; the first and second yoke portions, the first current carrier portion and the first set of via zones are located, sized, shaped and/or connected to act as an inductor when current passes through the first current carrier portion; the top yoke portion includes a first axial end terminating in a first transverse edge; the bottom yoke portion includes a first axial end terminating in a first transverse edge; the first transverse edges of the top and bottom yoke portions are offset from each other to define a gap footprint; the first electrical via extends in the vertical direction; the first electrical via is electrically connected to the first current carrying portion; and a footprint of the first electrical via is located at least substantially within the gap footprint. - View Dependent Claims (14, 15, 16, 17)
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Specification