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Power Interface Forum
TPS2560DRC withstand a reverse power scenario?
Can someone confirm if the TPS2560DRC can withstand a reverse power scenario - i.e. 5V on either or both VOUT pins but no power at the VIN pins.
My customer is expecting this scenario and want to be sure that there is no reverse feed back into their system.
There is no feedback to the input of TPS2560 with the EN signal false. When EN is true, the in to out switch is made and the output will appear on the input. .
Bob, thank you for the reply. The EN pin will be controlled by a MCU, which will be unpowered during the reverse-voltage scenario. So the EN pins may be floating, but regardless, we can say EN will not be high.
Last consideration: is there a body-diode in the TPS2560 pass-FET that will allow reverse current flow even with EN low?
Bryan, Centralized AFA
There is no body diode in tps2560 pass fet.
Thanks, Bob. It wasn't clear from the IC diagram, although I did notice the pass-FET substrate was pulled to GND.
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