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TPS51200: Leaving power good pin floating.

Binayak Shrestha88
Expert 1520 points
Part Number: TPS51200

Hi TI team,

Can I leave power good pin (PGOOD) floating if power good functionality is not required? What does TI recommend?

Thanks,

Binayak

 

  • 0
    TI__Mastermind 24075 points

    Hi Binayak, 

    PGOOD is open drain pin. Though it is very low risk to leave PGOOD pin floating, theoretically noise could be coupled to the pin and damage the pin. 

    I would suggest to pull PGOOD to VIN (pin10, 3.3v or 2.5V) via a pull-up resistor, even PGOOD signal is not used. 

    Sometime PGOOD signal can be used for debugging during design stage. 

    Thanks

    Qian