Patent ID: 9547318
Date: 2017-01-17
CPC Classifications: B60R,G05F,H04L,Y02D

Claim:
1. A Power Over Ethernet (PoE) system comprising: Power Sourcing Equipment (PSE) providing data and voltage over Ethernet wires, the PSE having a voltage source for generating a PSE voltage for transmission on the Ethernet wires; and a Powered Device (PD) connected to the PSE by at least the Ethernet wires to receive the data and voltage, wherein the PD has at least a first load and a second load, wherein the first load has at least a first mode of operation which causes the first load to draw a first current, wherein the second load has at least a second mode of operation which causes the second load to draw a second current larger than the first current, wherein the PD has at least one DC-DC converter that converts the PSE voltage into at least one regulated voltage for supplying power to the first load and the second load, wherein there is a first current path to the first load and a separate second current path to the second load from the at least one DC-DC converter, wherein the first current path supplies at least the first current to the first load in the first mode of operation while substantially no current is supplied to the second load via the second current path while the first load is in the first mode of operation, and wherein the second current path supplies at least the second current to the second load when the second load is in the second mode of operation.