I am using DP83620SQ/NOPB PHY for our 10/100Mbps Copper Media Ethernet Interface. We had connected through the Magnetics part 749013011A which is not PoE supported. But we need to use this for powering external devices without following the Standard PoE process (simply appending power with the data signals).
For PoE interface, the legacy (general) bob smith termination would not suit. Hence the 10nF capacitor is added along with the 75Ω termination resistor. To increase the power handling capacity through the bob smith termination during surge condition, we are purposely added one more 10nF+75Ω termination resistor combination along with the existing each 10nF+75Ω termination combination.
Will this scheme affect the cable characteristic impedance matching scheme?