Currently I try to design a step down converter which will be controlled via a frequency generator. In order to drive the MOSFET (the one in the picture does not correspond to the real one) I use the High Side Driver LTC7004. In order to get a better understanding of the functional principle of the gate driver I have conducted a simulation in ltspice. The only problem is that the simulation always stucks at 100% and never finishes its calculation. It only tries to iterate more and more (see picture 2).
I don't know how to fix this issue and therefore, because of the fact that this is my first circuit design, would be very glad and thankful for your help.