Patent ID: 7825508
Filing Date: 2010-11-02
Classification: H01L

Abstract:
1. An efficiently packaged multi-die semiconductor package for DC-DC buck converter application where the buck converter down converts an unregulated DC input into a regulated DC output, the multi-die semiconductor package comprises: a lead-frame having a first die pad thereon; a vertical MOSFET placed atop said first die pad; and a Schottky diode with its cathode connected to the source of the vertical MOSFET, wherein the first die pad is grounded, the vertical MOSFET is a vertical N-channel FET, the bottom of the Schottky diode die is its anode, the bottom of the vertical MOSFET is its source and the top of the vertical MOSFET has its gate and drain whereby the Schottky diode die and the vertical MOSFET die are co-packaged atop the first die pad in a stacked way with the vertical MOSFET die atop the Schottky diode die for minimized vertical MOSFET source inductance and easy heat sinking.