How to Turn off SiC MOSFET with Low Losses and Low EMI Across the Full Operating Range

Abstract:
In this paper, a solution consisting of two approaches is shown to turn-off SiC MOSFET with low losses and low EMI across the full operating range. At first, one approach called “boost-method” is presented. It is confirmed with measurements that with the boost-method low switching losses and low EMI can be realized simultaneously at a certain operating point with its corresponding optimum setting. Then it is verified with mathematical derivation and simulation whether the varying optimum settings caused by varying operating conditions can be realized by using the other approach called “tracking method”. Finally, the performance of this solution in the driving cycle of different applications is evaluated.