cuk converter

[anatasya]

my project is to design cuk converter with output 20A and 5V..but when i try to simulate it using pesim, the output waveform is weird. could somebody help me..and another problem is that i found the non inverting cuk converter circuit..i would like to try it but i don't know how to calculate the parameters in the circuit..

 

[crutschow]

The term "weird' is too technical for me.

Can you explain that in more detail or show the waveform?

 

[anatasya]

can i know how the best way to calculate the parameter use in this cuk converter...
can i used electrolytic capacitor or ceramic because my capacitor always burned out. but it is difficult to find ceramic capacitor

 

[ronsimpson]

I know the circuit on the left very well.
C2 will have current of near 40 amps. You will have trouble finding that capacitor.
You might first try using a 5 ohm load and get the simulator running first.
I normally use the same inductor value for each.
Real capacitors have resistance and a maximum current rating.