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TPS54326 reduce ripple on Eco-mode condition

Lee Joung Ho
Prodigy 170 points
Other Parts Discussed in Thread: TPS54326, TPS54326EVM-540, TPS54325

same with subject

how to reduce the ripple on ECO-mode condition of TPS54326

our condition : Vin 5V

                           Vout 1.05V

                           Iout 3A (ECO-condition is 0.2mA)

                           other mertrial is same with EVM (TPS54326EVM-540)

pls give your idea

  • 0
    TI__Guru**** 191445 points

    The operation of eco-mode will increase ripple by design.  It may be possible that there is something unusual about your condition.  Can you post a waveform?  Otherwise, you can use the TPS54325 instead.  It dose not use eco-mode, but otherwise is identical.