US 12,032,424 B2
Filtering-based power supply apparatus, power sourcing equipment, and power supply system
Shiyong Fu, Shenzhen (CN); Houcun Zhu, Nanjing (CN); Donghui Wang, Nanjing (CN); Xiangen Xu, Nanjing (CN); and Zhaojin Li, Nanjing (CN)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Jun. 27, 2022, as Appl. No. 17/850,019.
Application 17/850,019 is a continuation of application No. PCT/CN2020/137818, filed on Dec. 19, 2020.
Claims priority of application No. 201911384784.1 (CN), filed on Dec. 28, 2019.
Prior Publication US 2022/0329449 A1, Oct. 13, 2022
Int. Cl. G06F 1/3209 (2019.01); H02J 1/02 (2006.01)
CPC G06F 1/3209 (2013.01) [H02J 1/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a power supply control circuit comprising:
a first power supply channel comprising a first control switch, wherein the first control switch is configured to turn the first power supply channel on and off, and wherein the first control switch turns the first power supply channel off in a first detection process of the first power supply channel; and
a first detection module configured to send a first detection signal to the first power supply channel to detect whether a first peer device coupled to the first power supply channel is a first valid powered device, wherein the first detection signal comprises common mode interference noise from a power supply; and
an adaptive filter circuit coupled to the power supply control circuit and configured to filter, based on a first control instruction output by the power supply control circuit, the common mode interference noise from the first detection module in the first detection signal in the first detection process of the first power supply channel.