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SFP (Small Form-Factor Pluggable Transceiver) optical module electrifying circuit

A technology of optical modules and circuits, which is applied in the coupling of electrical components, electromagnetic transceivers, and optical waveguides, and can solve problems such as system power supply circuit damage

Active Publication Date: 2012-01-04
SOURCE PHOTONICS CHENGDU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is easy to cause damage to the system power supply circuit in the case of tens of times the input transient current jump

Method used

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  • SFP (Small Form-Factor Pluggable Transceiver) optical module electrifying circuit
  • SFP (Small Form-Factor Pluggable Transceiver) optical module electrifying circuit

Examples

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Embodiment Construction

[0013] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0014] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0015] Such as figure 1 The SFP power-on circuit shown includes a MOS switch group, and the light-on group includes two MOS switches. The S terminal of each MOS switch is connected to VCCIN, the G terminal is grounded through a resistor, and there is a serial connection between the G terminal and the S terminal. capacitance. Each switch D terminal is connected to the output VCCOUT. Preferably, some filter capacitors are connected between VC...

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PUM

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Abstract

The invention discloses an SFP (Small Form-Factor Pluggable Transceiver) optical module electrifying circuit comprising an MOS (Metal Oxide Semiconductor) switch group, wherein the MOS switch group comprises two MOS switches; the S end of each MOS switch is connected with VCCIN; the G end of each MOS switch is earthed by a resistor; a capacitor is connected in series between the G end and the S end; and the D end of each switch is connected with output VCCOUT. According to the electrifying circuit disclosed by the invention, the damage of surge current in the electrifying process of the SFP optical module on a system can be effectively lowered, and parameters are regulated as required so that the electrifying times of the power supply of the optical module transmitting and receiving end circuit are respectively controlled.

Description

technical field [0001] The invention relates to an SFP optical module in the field of optical communication, in particular to a power-on circuit suitable for the SFP optical module. Background technique [0002] With the development of optical communication technology, optical modules have been widely used in communication systems, and hot-swappable (SFP) optical modules have always been dominant due to the convenience of replacing them without powering down the system board during system use. status. However, during the power-on process of the SFP optical module, the generated surge current has great damage to the system power supply system, and even causes damage to the system power supply system. [0003] The surge current of the SPF optical module is mainly generated by two parts of the current of the optical module, one of which is the transient change of the power supply voltage during power-on. The impedance characteristics of capacitors for different frequencies ar...

Claims

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Application Information

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IPC IPC(8): G02B6/42H04B10/24H04B10/40
Inventor 蒋旭鞠兵裴培杨毅
Owner SOURCE PHOTONICS CHENGDU
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