Patent ID: 7586179
Filing Date: 2009-09-08
Classification: H01L

Abstract:
1. A multichip module for wirelessly connecting two or more dies to three external leads comprising: a heat sink having first and second surfaces and comprising a thermally and electrically conductive material; first and second dies, each die having at least one terminal on its upper surface and one terminal on its lower surface, said dies attached to one of the surfaces of the heat sink to establish an electrical connection between the terminals and the heat sink; a lead frame comprising three elongated leads, each lead having a die attach pad at one end that is disposed inside a packaging material and the other end extending from the packaging material, wherein a first lead has its die attach pad connected to the first die, a second lead has its die attach pad connected to the second die and a third lead has its die attach pad connected to the heat sink, whereby the first lead provides an external connection to the first die, the second lead provides an external connection to the second die, and the third lead provides an external connection to the electrical connection of the terminals on the lower surfaces of the dies; and the packaging material encapsulating a portion of the leads, the dies and the heat sink and leaving exposed the other surface of the heat sink for transferring heat from the dies to the ambient surroundings.