1) Enter your expression for the dc component of the output voltage V:
2) For the buck with input filter, enter your expression for the dc component of the L2 inductor current I2:
3)For the buck with input filter, enter your expression for the dc component of the capacitor C1 voltage VC1:
4)For the buck with input filter problem, enter your expression for the dc component of the inductor L1 current I1:

Help me to Sketch the transistor current waveform. IT(t)

I tried to analyze this diagram but I get many errors.
When writing voltage balance for L1 what is the voltage of the capacitor C1?

please help me.!

 

It's Vg because L is large enough?