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TPS23861: The PoE basic about classification

Part Number: TPS23861


Hi TI,

Here are 2 question about classification of PSE:

1.Classification: PSE will provide 10.9 to 22V and sensing the current feedback to know that the power level. am I right?

2. According to the waveform below, I see gete driver work when classification processing, so this mean classification voltage is control by the Rds of MOSFET?

Thank you very much!

C.T.