I am try to do simulation for LCC converter ,the wave form on R4 should be high frequency(100khz) with envelop of sine wave,but i can not get it with simulation so what i miss , and also this circuit has output of 24vdc and io=5A so can someone help me with the simulation of this circuit
tht input is=90-264 vac

 

Your V1 settings are way off. Try setting V1 as PULSE(0 5 0 10n 10n 5u 10u).

 

Your V1 settings are way off. Try setting V1 as PULSE(0 5 0 10n 10n 5u 10u).

Thanks so much,i did try and at the off time is not going to zero and is ringing

 

is ringing

Not surprising, with C4,L3,C3,L1 present.

 

Not surprising, with C4,L3,C3,L1 present.

do you have an idea how can i get 24vdc and io=5A

 

Not with a 90-264V AC input range.

Edit: Google 'fly-buck converter' to see the general approach.

 

Not with a 90-264V AC input range.

Edit: Google 'fly-buck converter' to see the general approach.

can you do it with 120+-10%

 

I'm sure someone can, but not me. The tricky part would be designing and making, or acquiring, the right transformer. Magnetics aren't my forte. I'd just buy an off-the-shelf converter, which would be cheaper than the cost of its parts to me.