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TPS92633Q1EVM: ONE FAULT-ALL FAULT FUNTION PROBLEM

Iris Shen
Expert 4002 points
Part Number: TPS92633Q1EVM
Other Parts Discussed in Thread: TPS92633-Q1

Hi team,

    My customer asked a question after testing our TPS92633Q1EVM:

   The fault pin one fault-all fault works normally in 8~16V, but under 8V LEDs can't be cut. How can they tune the circuit to achieve 6-16V one fault-all fault normally work?

   Thanks for your respoense.

  • +1
    TI__Genius 15436 points

    Hi Iris,

    What do you mean by

    Iris Shen said:
    LEDs can't be cut

    ?

    If you didn't change the LEDs on the board, the threshold voltage of SUPPLY is 6.6V by the DIAGEN dividing resistors. You can refer to the calculation tool of TPS92633-Q1. Change the amount of LEDs in one channel to 2, and lower the value of R7 according to calculation tool.

    Best regards,

    Gracie