MPQ4321 Input PI Filter used in typical application circuit

DC-DC Power Converters
1

Hi Team,

Regarding the intention for using uneven capacitors at the Input PI Filters on the typical application circuit.
We are planning to use 2.2Mhz switching frequency for this converter. So, Can we implement the same as per the typical application circuit or we need to keep the capacitors value as same. Please suggest.

Thanks & Regards
Shunmuganathan N

2

Hello Shunmuganathan,

You can implement the input capacitors as shown in the typical application, even at 2.2 Mhz.
We also use these values in our Evaluation Board, so there shouldn’t be any issues.

Thanks,
Eliza