At the datasheet of the TLV62568A at the typical application section the suggestion for the output capacitor is Murata ceramic capacitor, 22uF / 6.3V (GRM21BD70J226ME44), and for the input capacitor the suggestion is ceramic capacitor, 4.7uF / 10V (GRM21BR71A475KA73L).
I couldn't find these capacitors capacitance -frequency chart, but from previous experience I know that ceramic capacitor has rapid decrement of capacitance when the frequency is higher than 1MHz.
Since the TLV62568A is working at 1.5MHz, at the input, the current is drawn from the capacitor t 1.5MHz, and at the output the ripple is at 1.5MHz.
Doesn't the capacitance at this frequency less than what it should be? Why the suggested capacitors are ceramic and not Aluminum or polymer?
Also, is it sufficient to put 10uF ceramic capacitor at the output?
Thanks for your help,