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TS3A24157: COM2 leakage

Jeff YANG
Mastermind 7745 points
Part Number: TS3A24157

Hi,

I found when P3V3_BMC_AUX = 3.3V, IN1/IN2 pull low, COM2 still have leakage ~2.0V to MCU.

But if I pull COM2 to GND, this leakage is disappear.

Do you know why may cause this leakage form COM2 to NO2?

Thanks!

Jeff

  • 0
    TI__Genius 10974 points

    Hi Jeff,

    There should not be any voltage on that pin when the device is in that state as the COM pin will be shorted to the NC pin, leaving the NO pin floating/disconnected. What is the voltage on the COM2 pin supposed to be and what does it actually read? Is it supposed to be 2V on the COM2 pin or something else? Also, have you measured the voltage that is on the NC2 pin as well to make sure that is outputting correctly?

    Let me know if you can provide some of this information and we can look further into this.

    Thanks!

    Bryan