I designing a step-down buck converter and i'm a little bit worried about ripple current which flows through the output capacitors. In my research on internet i found that ripple current essentialy given by Vrms_output/ESR. If i have 3.5A maximum output current and i want transient responce this mean, 0A to 3.5A = 3.5A ripple current. But this value (transient step), i think isn't my normally ripple current. In my calculation corresponding to equation above if i want a ripple 10mV and select ceramic capacitor which gives me low ESR (< 5mΩ), this is equiavalent to 2A ripple current and i think that isn't normal!
If that is true, can a ceramic capacitor handle this magnitude of current?
Is this amount of current (ripple current, Irms) identical with Inductor ripple current of regulator?