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Overcurrent and overpower protection device

A protection device and over-power technology, which is applied in the direction of over-current protection, automatic disconnection emergency protection device, emergency protection circuit device, etc., can solve problems such as misoperation, damage, and insufficient power of peripheral devices. Achieve the effect of avoiding malfunction or damage, over-current and over-power protection

Inactive Publication Date: 2013-01-02
INVENTEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the portable electronic device can easily obtain the power supply through the Ethernet network, some uncertainties in the power supply, such as overcurrent, or insufficient power supplied by the power supply, may cause the internal components of the portable electronic device or Peripheral devices malfunction or damage

Method used

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  • Overcurrent and overpower protection device

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:

[0027] Please refer to figure 1 As shown, it is a block diagram of the overcurrent and overpower protection device of the present invention. The protection device 100 of this embodiment is suitable for being configured in a portable electronic device, such as a notebook computer, and the protection device 100 is configured between a Power over Ethernet (POE) socket 150 and a voltage converter 160 . Wherein, the power over Ethernet socket 150 can be an RJ-45 socket, and is used for connecting to a power over ethernet device, so as to receive a voltage of 48V provided by the power over ethernet device. The voltage converter 160 is used to convert the aforementioned 48V voltage into a 5V voltage, which is used as the working voltage of the internal components of the portable electronic device or peripheral devices connected with...

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PUM

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Abstract

The invention relates to an overcurrent and overpower protection device which comprises a current detection unit, a voltage detection unit, a first control unit and a switching unit. The current detection unit is used for detecting current of an Ethernet network power supply socket to produce a current value; the voltage detection unit is used for detecting voltage of the Ethernet network power supply socket to produce a voltage value; the first control unit is used for producing a first control signal according to the current value and a default value, calculates a first power value according to the current value and the voltage value and produces a second control signal according to the first power value and a second power value to control power supply states of a plurality of connection ports; and the switching unit is used for connecting or disconnecting the Ethernet network power supply socket with a voltage converter according to the first control signal.

Description

technical field [0001] The invention relates to an overcurrent and overpower protection device, in particular to an overcurrent and overpower protection device applied to Ethernet power supply. Background technique [0002] As the use of the Internet expands, network communication is becoming more and more important to people. The bandwidth and connection speed of the network are also constantly improving as people's demand for network data increases, from plain text, black and white images, and color images at the beginning to real-time audio and video playback. The function of the network is no longer just for information transmission. People have also begun to notice that network cables can also be used as one of the mediums for power supply, such as Power Over Ethernet (POE), which can be used in the Ethernet network. Twisted pair wires are used to transmit power and data to devices. [0003] Since a portable electronic device (such as a notebook computer) powered by a...

Claims

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Application Information

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IPC IPC(8): H02H3/08H02H3/42
Inventor 陈建廷
Owner INVENTEC CORP
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