Hi, i'm looking about Poe PSE controller and i find your LTC4279 LTPOE++. I can't understand why is used a negative voltage to supply the LTC4279. The positive is the AGND and the reference is VEE at -55V. I have never seen the same connections on PSEs of other productors. I think easy to resolve connecting the +55V on AGND and the ground on VEE but i'm perplexed, Is it only for convention or there are specific reason?
Bye