Patent ID: 9652009
Date: 2017-05-16
CPC Classifications: G06F,H04L

Claim:
1. A current regulation circuit for a plurality of power over Ethernet (POE) ports in parallel to drive a network device, the current regulation circuit comprising a plurality of current regulation units corresponding to the plurality of POE ports, each of the current regulation units regulating output current signals of the corresponding POE port, each of the current regulation units comprising: a sampling unit connected to the corresponding POE port, the sampling unit outputting sampling current signals according to the output current signals of the POE port; a mean conversion unit connected to the sampling unit, the mean conversion unit converting the sampling current signals output by the sampling unit into mean current signals; a current integration unit connected to the mean conversion unit, the current integration unit integrating and converting the mean current signals output by the plurality of current regulation units to output reference current signals; a comparison unit connected to the mean conversion unit and the current integration unit, the comparison unit comparing the mean current signals output by the mean conversion unit with the reference current signals output by the current integration unit and outputting comparison signals based on the comparison; and a voltage conversion unit connected to the sampling unit and the comparison unit, the voltage conversion unit regulating the output current signals of the POE port according to the comparison signals output by the comparison unit.