Hello Every one,
i am new in the field of power electronics and a new user of LT spice. I am not much familiar with the LT spice, i noticed that there is an example which is in LTC/LTspice/examples/educational/FRA/eg3.asc , I saw a post that this example is for frequency domain simulation, and we can plot the bode plot of the circuit. but it is not working, or i do not know if it need some changes, Secondly my actual work is to simulate the Lt1680 example in frequency domain(picture attached). If anyone can help me with this.. thank in advance. 
