Hi Support team
My customer adopted TPS23880 for one port POE power injector, the application circuit is as following, the max power is 45W,they used MSP430FR5969IRGZ for housekeeping MUC and TPS2373-4 EVM-758 for PD to test the function,
the PD would not power up since hand shaking failed, may I have your kindly advice and guide us how to resolve the issue
CH2 is PD output voltage, CH4 is output current,