Hi,
A customer has a question about decoupling capacitors for the PVDD pins.
In the 10.1.3 Power Supply Decoupling section of the TAS5825M data sheet, it described that Low ESR capacitors larger than 22 μF is required as decoupling capacitor for PVDD.
And according to the Bill of Materials of TAS5825M Evaluation Module User's Guide, TAS5825MEVM uses TDK C2012JB1V226M125AC as the decoupling capacitor for each PVDD pins.
However, when this capacitor is applied DC bias of around 24V, its capacitance may reduce to about 1/10, he points out.
Is there not problem even if the capacitance reduces to 1/10?
Or should he use larger capacitance in anticipation of the decrease in capacitance with DC bias voltage?
Best regards,
Akio Ito
