Patent ID: 11962426
Assignee: DELTA ELECTRONICS, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An Ethernet power supply configured to receive a DC voltage, and coupled to a load device, the Ethernet power supply comprising:
a first control module, configured to receive the DC voltage through a bus positive terminal and a bus negative terminal, and coupled to a negative end of the load device through the bus negative terminal so as to provide a first control signal through the bus negative terminal to confirm whether the load device is a valid load, and a second control signal is provided from a communication terminal to ground the bus negative terminal after the load device is confirmed as the valid load, and
a second control module, coupled to a power terminal of the first control module and the bus positive terminal, and the second control module comprising:
a switch unit, coupled to the bus positive terminal and the power terminal, and configured to connect or disconnect a coupling relationship between the power terminal and the bus positive terminal according to the load device being connected or not,
a first control unit, coupled to the bus negative terminal and the switch unit, and configured to turn on or turn off the switch unit according to a terminal voltage of the bus negative terminal, and
a second control unit, coupled to the communication terminal and the switch unit, and configured to turn on or turn off the switch unit according to the second control signal.