Hi all ！In my design, I used series capacitors for voltage sharing. Prior to this, I built the following schematic to verify the voltage sharing function of the series capacitors, but the simulation results were confusing，as follows:
Firstly， when the low level of the PWM input signal is 0V, the simulation result is correct，as the following picture：
Secondly，when I change the low level of the input signal from 0V to -400V, then the voltage of "Vds_back " is no longer half of the voltage of "in". Why does this happen? Is there a solution?
