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TPS74801: Input noise rejection

Part Number: TPS74801

Tool/software:

Hi TI experts,

For TPS74801, if there is a 1kHz noise with very shape rising/falling rate coupled on input side, can TPS74801 reject this input noise and achieve a clean output voltage?

Thanks

  • Hello there,

    By knowing the amplitude of the noise signal @ the frequency of interest (1kHz), you can quickly see how much such noise signal will be attenuated by (how many dBs of attenuation) by looking into the PSRR plots in the datasheet. Look for the PSRR plot that have the same headroom (VIN-VOUT) or very close, same loading or very close, and 1kHz frequency to get an estimate for the attenuation. 

    Regards,

    Haidar