SEMICONDUCTOR DEVICE

摘要

A semiconductor device (10) includes: an base substance (15) having a ferromagnetic material; a first semiconductor chip (11) and a second semiconductor chip (12) installed on the base substance (15); a first coil (131) installed on the base substance (15) and electrically connected to the first semiconductor chip (11); a second coil (132) installed on the first coil (131), electromagnetically connected to the first coil (131) and electrically connected to the second semiconductor chip (12); a transformer assembly (18) made of a ferromagnetic material and installed on the base substance (15), and a sealing body. The transformer assembly (18) includes a first core section (181), a first side shield section (182), and a first upper shield section (183).