LNK304 - Feedback capacitor voltage rating
In a design using the LNK304 in a traditional none-isolated buck converter, we've seen the feedback capacitors fail in some cases.
We have 12V output and use a standard X6S 0805 16V ceramic capacitor. The voltage will indeed get fairly close to the rating at switching, but should still be within the voltage-rating.
I can't seem to find much information on recommended voltage-rating of the feedback capacitor.
So long story short, what's the recommended voltage-rating for the feedback capacitors?