UCD90160A: How to mask the single Rail Fault reporting

Part Number: UCD90160A

Tool/software:

Hi TI team,

Our project use UCD90160A for Power monitor, in one of the Rail is setting for Coin battery voltage detect, normal condition it is off status by a switch, so UCD90160A always monitor 0.005V on this rail. 

We want to disable this single rail Fault reporting (UV or Lower PG Vth caused), since We don't want to see the POWER_GOOD# always show on status_word.

How to do it thru PMBus Command or Register to overcome this situation, pls suggest solution, thanks!

  • HI

    POWER_GOOD is a AND result of all configured rail, it can not be masked. 

    One way is to reduce the POWER_GOOD threshold so that 0.005 is still above POWER_GOOD.

    Regards

    Yihe