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LMZ14203HTZ/NOPB using a Pi on the output to reduce output ripple

Max Orlarey
Prodigy 60 points
Other Parts Discussed in Thread: LMZ34202

Can I use a Pi filter on the output side of this part: LMZ14203HTZ/NOPB

in order to reduce the output ripple?

 Note, some switching regulators like the LMZ34202 recommend, not to

 place filters or inductors, on the output, as it will affect the stability of the regulator.

 Thank you

 Max

  • 0
    TI__Genius 15810 points
    Hello,
    You can use the filter at the output of the regulator. But to avoid affecting the stability of the regulator, you could take the feedback point before the L-C filter. At heavier loads your actual output will be a little below regulation because of the DCR drop across the filter inductor.

    Regards,
    Akshay