公开(公告)号：US11183838B2

公开(公告)日：2021-11-23

申请号：US16433718

申请日：2019-06-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shiyong Fu ,  Yan Zhuang ,  Qi Dong ,  Xiangen Xu ,  Xueqi Chen ,  Yu Ding

IPC: H02H9/00 ,  H02H9/04 ,  H04L12/10 ,  H02H3/22 ,  H02H7/20

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.

公开(公告)号：US11368321B2

公开(公告)日：2022-06-21

申请号：US16802974

申请日：2020-02-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Hua Chen ,  Shiyong Fu ,  Yan Zhuang ,  Rui Hua ,  Qi Dong ,  Chao Gu

IPC: G06F1/32 ,  H04L12/10 ,  G06F1/3209 ,  G06F1/3203

Abstract: Power sourcing equipment (PSE) and an energy saving method for Power over Ethernet are provided. The PSE includes: a low-power detection component, configured to: detect a power supply port when being connected to the power supply port; and send a first instruction when the power supply port is connected to a valid powered device PD, to instruct a control switch to connect a PSE chip and the power supply port and disconnect the low-power detection component from the power supply port, and instruct a power switch to connect the PSE chip and a power supply; the control switch, configured to: according to the first instruction, connect the PSE chip and the power supply port, and disconnect the low-power detection component from the power supply port; and the power switch, configured to connect the PSE chip to the power supply port according to the first instruction.

公开(公告)号：US20200228353A1

公开(公告)日：2020-07-16

申请号：US16835181

申请日：2020-03-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shiyong Fu ,  Yan Zhuang ,  Xiangen Xu ,  Qi Dong ,  Peng Xu ,  Rui Hua

IPC: H04L12/10 ,  G06F1/28 ,  G06F1/3296

Abstract: This application discloses an energy-saving power sourcing method. Power sourcing equipment receives an input voltage of a powered device fed back by the powered device, and adjusts, based on the input voltage, a power sourcing voltage that is output to the powered device, so that the input voltage of the powered device is a maximum voltage, thereby reducing a link loss and saving electric power resources of the power sourcing equipment.