Hi,
I hope you're doing well,
I want to do the simulation of the auto switching power TPS2112A
is there anyone can help me,
how to do the simulation, and is there a simple and specially designed software for the simulation of electronic components
That chip TPS2112A doesn't seem to do very much anyway. It simply selects a voltage source at either IN1 or IN2 and delivers it at OUT. It is like a "power" analog switch. You could probably create a rough approximation of it with a few discrete components. That is, depending on exactly what the purpose is of the simulation and how accurate it has to be.