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TPS55010: May you pls help double check our application circuit?

Part Number: TPS55010

Hi Sir 

May you pls help double check our application circuit?(5Vin /5Vout/0.3A lout)


  • Hi Bogey,

    I put the component values into the excel calc tool and the file is attached below. The main finding I have is the compensation looks like it has too much gain. I suggest reducing R619 to ~12.4 kΩ.

    I see the fsw was increased to 650 kHz. Any particular reason for this? If you'd like to get better effiicency you should be able to decrease the fsw to as low as 300 kHz without any issues. The biggest trade-off would be slower transient response.

    Can you share some details on the application?



  • Hi Anthony

    the product is Fish Detector.
    the end customer ask the frequency need 650kHz to avoid SONAR freqyency.