I need to simulate my dc-dc converter with load capacitor of 20uF and its ESR.
How much will be the ESR for 20uF ceramic capacitor. can anybody guide me in selecting the type of capacitor for low ESR and low cost.
Your best bet is to use the selection guides on the manufacturer's web sites. They will give you the numbers. The murata site shows some graphs where the ESR is a function of frequency.