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TMS320F28P650DK: Sufficient SOC Sampling Window

Part Number: TMS320F28P650DK

Hi,

Is there a way to get a good estimate of what the sampling window should be depending on the external R-C filter at the input of the ADC? I want to make sure that I'm capturing the actual voltage for feedback and not cutting the sampling window to short.

If I'm using the ADC input for a feedback signal for a to control a converter, does that factor into setting the sampling window?