PowerPulse.Net forecasts advances in semiconductor materials will challenge silicon-carbide (SiC) and gallium-nitride (GaN). The article identifies two Durham-based companies, Sarda Technologies and HexaTech. Sarda Technologies is focused on reducing power loss in <20V DC-DC voltage converters. The technology results from the use of GaAs to enable a radical reimaging of the basic field effect transistor geometry and enables ultra-low power loss and very-high switching frequencies. HexaTech is is targeting very-high voltage power conversion for smartgrid applications. Using very low-dislocation-density single-crystal AIN subtrates, HexaTech is offers a significant reduction in size, weight and cooling.
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