POE device and POE power supply system

By adding line-to-inter-mode differential mode protection module to POE equipment, the lightning interference problem between the device chip and the network transformer is solved, the probability of damage is reduced, and the stability of the POE function is ensured.

CN114566952BActive Publication Date: 2024-12-24TP-LINK INT SHENZHEN CO LTD
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Patent Information

Application Number
CN202210143898.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-16
Publication Date
2024-12-24
Estimated Expiration
2042-02-16

AI Technical Summary

Technical Problem

Existing POE devices lack wire-to-wire differential mode protection, which makes PSE chips and PD chips susceptible to lightning interference, resulting in functional failure.

Method used

Add a line-to-line differential mode protection module between the equipment chip and the network transformer, including components such as fuses, diodes, inductors and gas discharge tubes, to provide differential mode protection and prevent lightning interference.

Benefits of technology

By adding the line pair differential mode protection module, the probability of damage to the PSE chip and PD chip is reduced, and the stability of the POE function is ensured.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a POE device and a POE power supply system, wherein the POE device comprises a device chip connected to an external power supply port, a network transformer, an RJ45 port connected to the network transformer, a first line pair differential mode protection module and a second line pair differential mode protection module having the same structure, and the line pair differential mode protection module connects the device chip and the network transformer through a specific connection method. The POE device and the POE power supply system provided by the embodiment of the present invention are provided with lightning protection modules on two groups (12-wire-36-wire, 45-wire-78-wire) of line pairs, so that the line pair voltage difference between the POE devices is protected by the line pair differential mode protection module between the device chip and the network transformer, thereby preventing the PSE chip and the PD chip from being damaged, reducing the probability of damage to the device, and ensuring the stability of the POE function.
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