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TPS54824: TPS54824RNVR : Switching Frequency Noise in Output

HARI PRASADH B
Prodigy 40 points
Part Number: TPS54824

Hi,

In Our Design We are using TPS54824RNVR switching regulator to convert 12V to 6V for our design.There is a ripple of switching frequency(~900kHz) in the output.Please suggest way to reduce or eliminate the ripple in the output.

  • 0
    TI__Mastermind 35165 points

    Hi Hari,

    Ripple at the fsw is normal for a buck converter. In order to reduce the ripple there are a few things to try. First, if only one stage of LC filtering is used, try increasing the inductance and/or output capacitance. If this does not give enough reduction in ripple at the fsw a second stage LC filter may be needed. Do you have a specific target for the ripple?

    You may also find the below article useful.

    http://www.ti.com/lit/an/slyt740/slyt740.pdf

    Anthony