Modeling and Simulation of Prepulse and Pulse Front for 4H-SiC Drift Step Recovery Diode

This paper presents the physics-based model to capture the prepulse and pulse front of the 4H-SiC Drift Step Recovery Diode output pulse. Mathematical equations are developed to describe the physical process of prepulse and pulse front formation. The analytical model is obtained by solving the mathematical equations based on reasonable assumptions. Simulation shows that the model can be used to predict the output pulse shape when the DSRD drive parameters and structural parameters are determined.