US 2019/0379203 A1 · Power Sourcing Equipment and Power over Ethernet System

Abstract

Power sourcing equipment for power over Ethernet (PoE) includes a power supply control circuit, an Ethernet port, and a surge protection circuit. The surge protection circuit includes a first circuit, a second circuit, and a common discharge circuit. The first circuit is connected to a power supply pin group of the Ethernet port, the power supply control circuit, and the common discharge circuit. The second circuit is connected to a non-power supply pin group of the Ethernet port and the common discharge circuit. The first circuit transmits, to the common discharge circuit, a first surge that is input from the power supply pin group. The second circuit transmits, to the common discharge circuit, a second surge that is input from the non-power supply pin group. The common discharge circuit discharges the first surge and the second surge to ground.

Claims20

Dependent claims

Power sourcing equipment (PSE) for power over Ethernet (PoE), the PSE comprising:

a first power supply control circuit;
a first Ethernet port comprising:
a first power supply pin group configured to receive a first surge, and
a first non-power supply pin group configured to receive a second surge;
a surge protection circuit comprising:
a first circuit coupled to the first power supply control circuit and the first power supply pin group and configured to receive the first surge from the first power supply pin group, and
a second circuit coupled to the first non-power supply pin group and configured to receive the second surge from the first non-power supply pin group;
and
a first common discharge circuit coupled to the first circuit and the second circuit and configured to:
receive the first surge from the first circuit,
discharge the first surge,
receive the second surge from the second circuit, and
discharge the second surge.

10 more elements

A power over Ethernet system comprising:

a powered device (PD);
and
a power sourcing equipment (PSE) comprising:
a first power supply control circuit;
a first Ethernet port configured to couple to the PD using an Ethernet cable and comprising:
a first power supply pin group configured to receive a first surge, and
a first non-power supply pin group configured to receive a second surge;
a surge protection circuit comprising:
a first circuit coupled to the first power supply control circuit and the first power supply pin group and configured to receive the first surge from the first power supply pin group, and
a second circuit coupled to the first non-power supply pin group and configured to receive the second surge from the first non-power supply pin group;
a first common discharge circuit coupled to the first circuit and the second circuit and configured to:
receive the first surge from the first circuit,
discharge the first surge,
receive the second surge from the second circuit, and
discharge the second surge;
and
a power supply configured to:
output electric power to the first power supply pin group, and
supply power to the PD through a power supply twisted pair of the Ethernet cable.

16 more elements

Dependencies are inferred from the claim text.

Power Sourcing Equipment and Power over Ethernet System

Life of this patent

Power Sourcing Equipment and Power over Ethernet System

Life of this patent

Abstract

Claims20