AC Disconnect of Power Over Ethernet Devices
First Claim
1. Power sourcing equipment (PSE) for providing DC power to a powered device (PD) over a data communications medium, the PSE comprising:
- an inductor coupled between an output of a DC supply, from which the DC power is provided, and the data communications medium; and
a capacitor coupled between the data communications medium and ground,wherein the inductor and capacitor form a series inductor-capacitor (LC) circuit configured to generate an AC disconnect signal.
7 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of power sourcing equipment (PSE) utilizing AC disconnect are provided herein. In one embodiment, a PSE is provided that includes a DC supply configured to provide a DC voltage over a data communications medium, a controller configured to provide an AC disconnect signal over the data communications medium, and a parallel inductor-capacitor (LC) circuit coupled between the DC supply and the data communications medium. The parallel LC circuit is configured to isolate the DC supply from the AC disconnect signal. In another embodiment, a PSE is provided that includes a DC supply configured to provide a DC voltage at an output, an inductor coupled between the output of the DC supply and a data communications medium, and a capacitor coupled between the data communications medium and ground. The inductor and capacitor form a series LC circuit configured to generate an AC disconnect signal.
9 Citations
20 Claims
-
1. Power sourcing equipment (PSE) for providing DC power to a powered device (PD) over a data communications medium, the PSE comprising:
-
an inductor coupled between an output of a DC supply, from which the DC power is provided, and the data communications medium; and a capacitor coupled between the data communications medium and ground, wherein the inductor and capacitor form a series inductor-capacitor (LC) circuit configured to generate an AC disconnect signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Power sourcing equipment (PSE) for providing DC power to a powered device (PD) over spare wires of a data communications medium, the PSE comprising:
-
an inductor coupled between an output of a DC supply, from which the DC power is provided, and the spare wires of the data communications medium; and a capacitor coupled between the spare wires of the data communications medium and ground, wherein the inductor and capacitor form a series inductor-capacitor (LC) circuit configured to generate an AC disconnect signal. - View Dependent Claims (11, 12, 13, 14, 15, 16)
-
-
17. Power sourcing equipment (PSE) for providing DC power to a powered device (PD) over a data communications medium, the PSE comprising:
-
an inductor coupled between an output of a DC supply, from which the DC power is provided, and the data communications medium; a capacitor coupled between the data communications medium and ground; and a PSE controller configured to detect an AC disconnect signal, generated by the inductor and the capacitor in response to the PD being disconnected from the data communications medium, and stop the DC power from being provided over the data communications medium. - View Dependent Claims (18, 19, 20)
-
Specification