Patent ID: 8076767
Filing Date: 2011-12-13
Classification: H01L,H02M

Abstract:
1. A semiconductor device including a DC-DC converter, comprising: a first die pad including an input power supply terminal; a second die pad including an output terminal; a third die pad; a wiring section including a reference potential terminal; a first semiconductor chip disposed over the first die pad, which includes a high side MOSFET of the DC-DC converter and includes a first gate electrode pad, a first source electrode pad and a first drain electrode of the high side MOSFET, a second semiconductor chip disposed over the second die pad, which includes a low side MOSFET of the DC-DC converter and includes a second gate electrode pad, a second source electrode pad and a second drain electrode of the low side MOSFET, the second drain electrode being coupled to the output terminal; the first electrode pad of the third semiconductor chip and the first gate electrode pad of the first semiconductor chip being coupled via a first bonding wire, the second electrode pad of the third semiconductor chip and the second gate electrode pad of the second semiconductor chip being coupled via a second bonding wire; a first metal plate wiring coupled to the first source electrode pad of the first semiconductor chip and the second die pad; a second metal plate wiring coupled to the second source electrode pad of the second semiconductor chip and the wiring section; a Schottky Barrier Diode, an anode and a cathode of the Schottky Barrier Diode being coupled to the second source electrode pad and the second drain electrode of the second semiconductor chip, respectively; and a resin body covering the first, second and third semiconductor chips.