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TPS2560: Does the Current-Limit Power Switch drive Vout to ground when Enable is turned off?

Jonathan Lui
Prodigy 40 points
Part Number: TPS2560

Does the TPS2560 Current-Limit Power Switch drive Vout to ground when Enable is turned off? 

I would assume Vout = GND when EN is off. However, an unrelated development board has Vout connected to GND through a discrete FET, in a way to suggest Vout doesn't go to ground when the switch is off. I didn't see anywhere in the datasheet to suggest Vout is floating when the switch is off. So I want to be sure that the switch drives Vout = GND when switch is off. Thanks.

Jon

  • 0
    TI__Expert 8980 points

    Hi, Jon,


    When Enable is off, Power FET will be turned off and disconnect IN and OUT, so OUT will be floating. When Enable is on, power FET will be turned on and connect IN and OUT.

    Below is block diagram FYI.