US 12,068,867 B2
Voltage-current profile based start-up of PoE devices
Matthias Wendt, Wurselen (DE); and Muhammad Mohsin Siraj, Eindhoven (NL)
Assigned to SIGNIFY HOLDING B.V., Eindhoven (NL)
Appl. No. 17/795,923
Filed by SIGNIFY HOLDING B.V., Eindhoven (NL)
PCT Filed Feb. 8, 2021, PCT No. PCT/EP2021/052941
§ 371(c)(1), (2) Date Jul. 28, 2022,
PCT Pub. No. WO2021/160551, PCT Pub. Date Aug. 19, 2021.
Claims priority of application No. 20156270 (EP), filed on Feb. 10, 2020.
Prior Publication US 2023/0104407 A1, Apr. 6, 2023
Int. Cl. H04L 12/10 (2006.01); H04L 49/351 (2022.01)
CPC H04L 12/10 (2013.01) [H04L 49/351 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A power sourcing equipment for supplying power to powered devices in a Power over Ethernet system, wherein the power sourcing equipment comprises:
a power supply configured for supplying power to a powered device connected to the power sourcing equipment,
a data storage configured for storing a voltage-current profile of an initial powering phase of the powered device, wherein the voltage-current profile includes current levels and voltage levels;
a controller configured for adjusting a voltage level provided to the powered device in a subsequent initial powering phase of the powered device as long as a value corresponding to a current voltage level of a voltage-current profile of the subsequent initial powering phase deviates less than a predetermined threshold level from its corresponding value of the stored voltage-current profile of the initial powering phase of the powered device and until a predetermined voltage level is reached,
wherein the value corresponding to a current voltage level of the voltage-current profile of the subsequent initial powering phase is a current level; and
a comparator for comparing the value corresponding to the current voltage level of the voltage-current profile of the subsequent initial powering phase to its corresponding value of the stored voltage-current profile of the initial powering phase of the powered device and for providing a result of the comparison to the controller.