So I know that the impedance of the capacitor changes with frequency. However, stumbling across a document by KEMET and their new stacked MLCC capacitors which allow higher ripple current, https://www.mouser.co.uk/datasheet/2/212/1/KEM_C1105_KONNEKT_KC_Link_C0G-1855982.pdf

There are some figures which show that the AC RMS Voltage of the capacitor is reducing with frequency, on page 4 for example.

Now, I see that these types of capacitors are always used in LLC resonant converters - at frequencies close to a 1MHz and even higher sometimes. How is this possible if the permitted AC voltage in the capacitor is very low at higher frequencies? Or am I reading the data sheet wrong!?

Thanks in advancefor any help you can provide.