TIDUF04 December 2022
For this reference design, the output capacitor (COUT) for output is selected to prevent VOUT (12 V) from dropping below the minimum output voltage (VOTRM) during transients up to 0.1 V and ripple voltage less than 100 mV.
Assuming VOTRM = 11.9 V,
Considering the allowable output ripple voltage of 100 mV (5%), the ESR and RMS current of the capacitor must be: