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In summary, Wolfspeed's 1700 V, 1-Ohm Silicon Carbide MOSFET outperforms comparable silicon devices. It provides a higher blocking voltage with a considerable guardband, lower conduction and switching losses, and higher current handling capability at lower operating temperatures. It is easier to design-in and drive than many incumbent silicon devices. When installed in an auxiliary switched-mode power supply, the advantages of the SiC MOSFET become even more apparent. System designs could potentially utilize simpler topologies, with the reduction or even total elimination of voltage clamps or snubbers, combined with reduced heatsink and airflow requirements. The system will benefit from significantly increased reliability and higher operation frequency. All of these advantages combine to provide a lower system cost.
PTM Published on: 2013-10-30