Patent ID: 6233149
Filing Date: 2001-05-15
Classification: H01L,H02M,H05K

Abstract:
In a relatively high power electrical system including a plurality of IGBT modules connected in an electrical power switching circuit, the improvement wherein each of the IGBT modules includes:an electrically isolated, thermally coupled base plate, the base plate having a plurality of closely spaced, heat radiating fins extending in parallel arrangement across an exposed surface of the base plate;an electrical device compartment defined by at least one wall, an air exhaust conduit and an air supply plenum being formed on an opposite side of the wall from the electrical device compartment, the wall including a plurality of apertures therethrough from each of the air exhaust conduit and the air supply plenum, the IGBT modules being mounted to the one wall such that the IGBT device is positioned in the electrical device compartment and the plurality of fins extend through the one wall; anda barrier attached to the one wall adjacent each end of the fins for defining a cooling air flow path through the fins for cooling the modules.