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ISO5451: Pull-up/down resistor value

Shaofeng Luo
Intellectual 1470 points
Part Number: ISO5451

Hi team

Do we have a specific value of pull-up/down pin? Like IN+ and IN-.

BTW, should we add a RC filter between MCU and ISO5451? If so, do you have a recommended RC values? Thanks!

  • 0
    TI__Expert 4370 points

    Hi Shaofeng, 

    I found this post that talks about PU/PD resistances :)

    It's recommend to add an RC filter if the trace is long from the MCU to the gate driver. I would recommend a ~100ohm resistor and a ~100pF capacitor as a starting point, and fine tune it to suit the system. 

    Thank you! 

    Vivian