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TMS320F28P650DH: One ADC channels triggered with different PWM

Jordan Zhou
Genius 10100 points
Part Number: TMS320F28P650DH


Tool/software:

Hi,

Just one doubt, if one ADC different channels are triggered by different PWMs (different frequency), what potential issue will happen?

Some channels are sampling and another one comes, ADC result accuracy decrase?

Thanks a lot.

Br, Jordan

  • 0
    TI__Intellectual 2270 points

    Hi Jordan,

    If we want to use different EPWM's to trigger different ADC's then we need to make sure that the EPWM's are in SYNC & also the sampling and conversion phase of the ADC's should not overlap this will result in noise coupling from 1 ADC to another. 

    BR,

    Nilesh