US 11,953,964 B2
Ethernet power supply and power saving method of controlling the same
Yung-Wei Peng, Taoyuan (TW); Kuan-Hsien Tu, Taoyuan (TW); and Cheng-En Liu, Taoyuan (TW)
Assigned to DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed by DELTA ELECTRONICS, INC., Taoyuan (TW)
Filed on Jun. 2, 2022, as Appl. No. 17/831,060.
Claims priority of application No. 202111493048.7 (CN), filed on Dec. 8, 2021.
Prior Publication US 2023/0180450 A1, Jun. 8, 2023
Int. Cl. G06F 1/32 (2019.01); G06F 1/3209 (2019.01)
CPC G06F 1/3209 (2013.01) 22 Claims
OG exemplary drawing
 
1. An Ethernet power supply coupled to a positive end and a negative end of a load device through a bus positive terminal and a bus negative terminal, and configured to receive a DC voltage, the Ethernet power supply comprising:
a first control module, comprising a power terminal, and a first end of the first control module coupled to the bus negative terminal, and configured to control the power supplied by the Ethernet power supply to the load device, and
a second control module, coupled to the first control module, the bus positive terminal, and the bus negative terminal, the second control module comprising:
a path control circuit, configured to connect or disconnect a coupling relationship between the power terminal and the bus positive terminal,
a first control unit, coupled to the bus negative terminal and the path control circuit, and configured to turn on the path control circuit according to a first control signal corresponding to a temporary connection phase when the negative end is connected to the bus negative terminal, and
a second control unit, coupled to the first control module and the path control circuit, and configured to turn on the path control circuit according to a second control signal provided by the first control module,
wherein the bus negative terminal provides the first control signal when the negative end is connected to or disconnected from the bus negative terminal; the first control module provides the second control signal; the second control module turns off the path control circuit when the negative end is disconnected from the bus negative terminal; the first control module is powered on to work when the path control circuit is turned on, and is powered off to rest when the path control circuit is turned off.