I'm doing a project using PoE technology through LTC4267. I did my PCB based on the DevKit 1145B, to generate 5.5V to a class 3 device (up to 13W). I have tested the circuit (attached in this message), and it works, the circuit is generating the right voltage to supply my load, but sometimes the circuit have an instability and than my circuit is reseted without an extra load or modification.
Could you plase review my schematic to verify some problem or mistake would I did, or give some recomendation based on my PCB?
OBS: With this configuration I'm having some following values in the circuit.
PVCC = 7.63V
Ith/Run = 1.12V
Optoisolator Diode Anode = 4.4V
Shunt Divider Reference = 2.44V