Hi all,
At the moment i am facing Detection issues with the TPS2379 module when implementing it in my own board.
It will not surpass the detection stage although the Vdd voltage is above 1.4V according to the IEEE 802.3at standard.
The CDB pin is connected to the Enable of the TPS54060 DC-DC step down converter. Other pin connections you can see through the schematic.
The specified detection resistance is 24k9 ohm which is implemented in the schematic.
If someone has any information or a solution feel free to enlighten me.
Attached are the schematic and two oscilloscope readings from Vdd, DEN and T2P.
CLS, RTN & VSS = 0V
Oscilloscope reading: VDD ( CH2 ) & T2P (CH1)
Oscilloscope reading: Vdd (CH2) & DEN (CH1):
Schematic: