Hello people, I am trying to simulate a closed loop buck boost model but my simulation speed is very less(fs/s). Struggled through it alot and couldnt find possible causes for this error( like proper ground and all) . If any one can look into it, I will be highly obliged to him/her.
Thanking in anticipation

 

You circuit needs to have a PWM (Pulse Width Modulator) circuit to control the MOSFET ON/OFF duty-cycle to regulate the output voltage.
I don't see that in your design.
You could do that by making the signal from V6 a sawtooth.

Also, that circuit appears to be only a boost circuit, not a buck-boost.

 

V6 needs a non-zero Tfall value, e.g. 10ns.