The current of gate ig oscillates

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I use C3M0075120D as the switch device in the buck converter. It is found that the gate current oscillates, and the peak value of current oscillation increases with the increase of bus voltage. When the bus voltage is not added, there is no gate current oscillation phenomenon. Channel 3 in the figure below is the gate current waveform,and 50mv stands for 1A. That is, the grid current in the oscillation reaches 3A.Channel 4 in the figure below is the gate voltage Vgs waveform.