Thermal performance of water-cooled heat sinks: a comparison of two different designs

As power electronic applications continue to switch higher levels of voltage and current in smaller-sized component packages, the resulting increase in power density requires efficient thermal management. This paper compares the thermal performance for operating a MOSFET on a water-cooled pole-arrayed heat sink versus a novel water-cooled microchannel heat sink. Details are presented on an innovative technique for determining the thermal capacitance modeling parameter for the heat sinks from experimental data.