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TPS543C20A: frequency tolerance

Ann_Lien
Genius 14430 points
Part Number: TPS543C20A

Hello expert,

May we know if we have frequency tolerance for single phase operation? Customer is using our TPS543C20A for 500kHz fsw setting, test result for switching frequency is 553kHz. Thanks a lot!

Best regards,

Ann Lien

  • 0
    TI__Genius 17905 points

    Hi ,

    Between multiple boards using the same RT value, you should see that they are matching within +/-10% or so.

    Is the customer using 39.2kΩ for RT resistor? They may get a nominal value closer to 500kHz by using ~43.2kΩ. Please see table below from a similar device: