Abstract: Aiming at the crosstalk problem in photovoltaic grid-connected inverter,a crosstalk peak prediction algorithm for non-Kelvin packaged SiC MOSFET considering the effect of parasitic inductance is proposed. The half-bridge circuit composed of To-247-3 package SiC MOSFET is studied. Firstly,the mathematical model of crosstalk voltages in each stage are analyzed,and the differential expressions of crosstalk voltage are derived;Secondly,the prediction algorithm of crosstalk peak is proposed,and the mathematical models of the parameters required to predict the crosstalk peak are established;Finally,an experimental platform is built to verify the correctness of the theory and the effectiveness of the algorithm.