Buck Converter 72V(I/p) - 16V(o/p) 1A Need Help on Capacitor Values

Thread Starter

AjaxKrish

Joined Dec 5, 2021
2
MP9486 I'm trying to design a 72v input to 16v output with 1A and 20% ripple current with MP9486. I'm stuck with calculating the Capacitor Values.
 

Ian0

Joined Aug 7, 2020
4,123
MP9486 I'm trying to design a 72v input to 16v output with 1A and 20% ripple current with MP9486. I'm stuck with calculating the Capacitor Values.
Ripple current is of far more importance than the capacitance value.
Find a capacitor with enough voltage rating and enough ripple current rating, and it will most likely have enough capacitance.
 

Thread Starter

AjaxKrish

Joined Dec 5, 2021
2
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Page two is a good place to start. Pick a different R1 to get 16V. Change C2a and b to 25V parts.
View attachment 254245
Thanks, It took me a while to understand what u said, so accordingly I got R1 to be as 790K(680K+100k+10K) AND R2- 10K and c2a and c2b for 25V. Can I go with that? Is there any other way than this? Can I Simulate this in MATLAB?

Sorry for late Response and Happy NEW YEAR
 
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