Systems and methods for Gaussian filter standard deviation variation. One embodiment of a method includes receiving a load current and a drain voltage associated with a switching converter that includes a Silicon Carbide (SiC) Mosfet transistor, determining a derivative of the drain voltage with respect to time, and calculating a switching loss associated with the switching converter. Some embodiments include predicting electromagnetic interference (EMI), selecting a Gaussian standard deviation from the switching loss, and determining a Gaussian switching voltage reference. Still some embodiments include adjusting a component of the SiC Mosfet transistor, based on the Gaussian standard deviation, and the Gaussian switching voltage reference to provide a desired switching loss.