Part Number: UCC2897
When using Poe power supply, Poe voltage will be clamped to the voltage point of under voltage protection (lineuv),
According to the partial voltage resistance, the lineuv is about 1.27v,
According to our schematic design, the POE voltage is clamped to about 30V,
However, if Poe is disconnected from ucc2897 circuit, the voltage can rise to about 48V normally;
Can you help me to see under what circumstances this phenomenon can be caused? thank you!
