Patent ID: 7511351

Claim:
A semiconductor device, comprising: a semiconductor chip provided with a circuit element; a coil provided on an upper side of said semiconductor chip, which is packaged with a dimension effectively the same as an outer dimension of said semiconductor chip; and a magnetic body provided on an upper side of said semiconductor chip, and surrounded by said coil, wherein said magnetic body extends along a main surface of said semiconductor chip, said coil forms a substantially spiral shaped conductive path which is wound along an extension direction so as to surround said magnetic body, said magnetic body is a substantially tabular body, said coil is provided with a first conductive part provided on a first plane parallel with a main surface of said semiconductor chip, a second conductive part provided on a second plane parallely separated in a perpendicular direction with respect to said main surface, and connection parts which electrically connects end parts of said first conductive part and said second conductive part, and said first conductive part, said second conductive part, and said connection parts form a substantially spiral shaped conductive path, and said connection parts are arranged in two rows at predetermined spacing in the extension direction of said magnetic body, each connection part of each row provided in an offset position.