Microsemi P.o.e Ltd.

Ohad Vaknin

Arkadiy Peker

Alon Zeev Ferentz

Eli Ohana

Alon Ferentz

A reverse power feeding power PSE in electrical communication with a power source and a DPU, the PSE constituted of: a power output terminal; and a control circuitry, the control circuitry arranged to: output at the power output terminal power from the power source, the output power exhibiting a voltage within a predetermined operating range, after a predetermined inrush time period from an initial output time of the power, determine the magnitude of current flowing through the power output terminal, responsive to the determined current magnitude being greater than a predetermined current draw value, cease the power output.

Reverse power feeding power sourcing equipment and method

A powered device interface constituted of: a first and second rectifier bridge, the outputs and returns thereof in electrical communication with each other; and a selection circuit; and a classification current circuit in electrical communication with the output and return of each of the first rectifier bridge and the second rectifier bridge, and further in electrical communication with a first and second input of the first rectifier bridge, wherein the classification current circuit is arranged, responsive to a classification voltage received at one of the first rectifier bridge and the second rectifier bridge, to: in the event that the classification voltage is received at the first rectifier bridge, output a first classification current exhibiting a first magnitude; and in the event that the classification voltage is received at the second rectifier bridge, output a second classification current exhibiting a second magnitude.

Powered device interface classification apparatus and method

A reverse power feeding PSE in electrical communication with a DPU, the PSE constituted of: a control circuitry; and a detection and classification signal circuitry, arranged to: output a detection signal; output a classification signal; and output an additional signal exhibiting a voltage below an operating range, and wherein the control circuitry is arranged to: responsive to the output first detection signal, detect a valid signature resistance; responsive to the output first classification signal, receive a classification current and determine the class of the DPU; responsive to the output additional signal, detect the absence, or presence, of an off-hook phone; responsive to the detection of the absence of an off-hook phone, and further responsive to the detection of the valid signature resistance, output power exhibiting a voltage within the operating range; and responsive to the detection of the presence of an off-hook phone, not output power.

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Ramat Gan, Israel

Ohad Vaknin