Other Parts Discussed in Thread: TPS2113
my customer is using the attached circuit where he put 2 diodes in parallel to the device , just to increase current capabilities during peaks.
They noticed that with the diodes the circuit is not working(2nd picture) and POE(that is the output of Power over Ethernet stage) is stuck at 5V , even if it is supposed to go to 0V , and then output should switch to DC/DC ; in addition there is some noise on both input(DC/DC is an output of switching converter) and output.Without diodes(third picture) everything is fine.
They did additional test with only one diode on POE or on DC/DC, just to understand the influence and with diode only on POE is OK, while on DC/DC NOK, see other waveforms.
Can you verify what's happening?