Dears,
We use TPS23754 design a 802.3AT PD power,when we test find only sometimes our PD can not get lock with PSE,it will not have power output.
We use the POE test instrument test our PD,then get as below picture, it says that need a 10mA load to maintain power signature(MPS).but our design always have a 1KOHM resistance at the output,We think it's not he root cause.
We are urgent to get help from TI,give us suggestion,whether have method to fix the cause??
