Patent ID: 9613897
Date: 2017-04-04
CPC Classifications: H01F,H01L

Claim:
1. An integrated circuit comprising a magnetic core inductor, the magnetic core inductor comprising: a bottom magnetic plate comprising a center portion and first, second, third, and fourth extension portions extending from the center portion; an interlayer dielectric layer disposed over the bottom magnetic plate; within the interlayer dielectric layer, first, second, third, and fourth via trenches extending above a respective one of the first, second, third, and fourth extension portions, and a fifth via trench extending above the center portion, each of the first through fifth via trenches comprising a magnetic material along sidewalls thereof and being filled with a high dielectric breakdown material; a stacked-ring inductor coil comprising a plurality of inductor rings surrounding the fifth via trench; and a top magnetic plate comprising a center portion and first, second, third, and fourth extension portions extending from the center portion that lie over respective ones of the center, first, second, third, and fourth extension portions of the bottom magnetic plate.