Patent ID: 7932588
Filing Date: 2011-04-26
Classification: H01L

Abstract:
1. A semiconductor device including a DC-DC converter, comprising: a first die pad having a top surface and a bottom surface opposite each other, and a first lead used for inputting to the DC-DC converter; a second die pad having a top surface and a bottom surface opposite each other, and a second lead used for outputting of the DC-DC converter; a third die pad having a top surface and a bottom surface opposite each other, and a third lead; fourth leads used for supplying ground potential to the DC-DC converter; a first semiconductor chip disposed over the top surface of the first die pad, a second semiconductor chip disposed over the top surface of the second die pad, a third semiconductor chip disposed over the top surface of the third die pad, a resin body covering the first, second, and third semiconductor chips, a first metal plate coupled to the first source electrode pad of the first semiconductor chip and the second die pad; and a second metal plate having a top surface and a bottom surface opposite each other and coupled to the second source electrode pad of the second semiconductor chip and the fourth leads, wherein the second metal plate has an opening which penetrates the second metal plate from the top surface to the bottom surface thereof.