Hi every body!
I have done a POE (using TPS23861) circuit with camera axis P1357-E(Figure 43. Automatic 4-Port Operation Schematic , in the TPS23861 datasheet). But I have a problem, it is:
Link: http://www.ti.com/product/tps23861
- Case 1: While POE circuit powered (VDD = 3.3V; VPWR = 48V), I connect network cable between camera with POE (RJ-45 port), camera will be powered by POE circuit, Camera works well (OK).
- Case 2: While POE circuit not powered, I connect network cable between camera with POE. Then, I will supply power for POE circuit. Camera haven't been powered. Camera didn't work! I don't why?
I want camera will work same the case 1 after I supply power for POE!
Can you please tell me solutions to solve that problem?
Many thanks!