CN207766266U - A kind of high density can be embedded in photoelectric receiving device - Google Patents

Abstract

The utility model discloses a kind of high density can be embedded in photoelectric receiving device, it is inputted including ethernet transceiver chip, optical interface circuit, optical module, secondary power supply translation circuit and DC power supply, DC power supply is input to secondary power supply translation circuit, ethernet transceiver chip connects optical module by optical interface circuit, and secondary power supply translation circuit output end connects ethernet transceiver chip.The utility model realizes the quadratic transformation of the wide-range input voltage of 5V ~ 24V using efficient power chip, in conjunction with the low-power consumption offset design of low-power consumption dedicated network chip and optical module, greatly reduce circuit power consumption and volume, make it possible high-density applications, and can realize the fiber direct connection of original equipment by embedded use.The present apparatus uses high integration low-power consumption special chip and efficient conversion electric power chip, simple circuit.

Description

A kind of high density can be embedded in photoelectric receiving device

Technical field

The utility model is related to a kind of high density can be embedded in photoelectric receiving device.

Background technology

Optical fiber is with its large capacity, and at a distance, the advantages of strong anti-interference ability, high confidentiality etc. can not be substituted has obtained rapid Application, global FTTB/FTTH also in progress like a raging fire, for opto-electronic conversion transmission device demand also swift and violent In growth, and the packing density requirement of photoelectric conversion device is higher and higher simultaneously.Currently known photoelectric receiving device is single The equipment solely installed, volume is big, converter and need using optical fiber transmission equipment between by being connected by cable, medium turn Parallel operation is all placed in a waterproof box body in front end or is respectively individually put using individually feed power supply adaptor, these equipment It sets.Because traditional photoelectric receiving device needs larger installation space, cause packing density low, it is also difficult to be embedded into remaining It is used in equipment, while traditional photoelectric receiving device needs independent power supply adaptor, UTP connecting lines, so as to cause being Unite of high cost, high energy consumption, while multiple connection but also system reliability decrease.

Invention content

The technical problem to be solved by the utility model is to provide a kind of high density can be embedded in photoelectric receiving device, the light Network telecommunication number is not converted to optical signal and realizes photoelectric receiving dielectric converter by luminous energy, is also equipped with small volume and low Power consumption, have Width funtion feeding capability, it can be achieved that high-density installation application, and can be embedded into remaining equipment and easily realize The optical fiber of equipment is directly connected to.

The utility model is achieved through the following technical solutions：A kind of high density can be embedded in photoelectric receiving device, It is inputted including ethernet transceiver chip, optical interface circuit, optical module, secondary power supply translation circuit and DC power supply, DC power supply It is input to secondary power supply translation circuit, ethernet transceiver chip connects optical module, secondary power supply by optical interface circuit Translation circuit output end connects ethernet transceiver chip.

The ethernet transceiver chip includes Ethernet level-conversion circuit and photoelectricity as a preferred technical solution, Change of medium circuit, optical interface circuit connect Ethernet level-conversion circuit, Ethernet level by photoelectric receiving circuit Translation circuit connect transmission with photoelectric receiving circuit.

The input/output terminal of the Ethernet level-conversion circuit is installed a RJ45 and is connect as a preferred technical solution, Mouthful.

The utility model has the beneficial effects that：The utility model realizes that the wide scope of 5V ~ 24V is defeated using efficient power chip The quadratic transformation for entering voltage greatly reduces electricity in conjunction with the low-power consumption offset design of low-power consumption dedicated network chip and optical module Road power consumption and volume so that high-density applications are possibly realized, and the fiber direct connection of original equipment can be realized by embedded use. The present apparatus uses high integration low-power consumption special chip and efficient conversion electric power chip, simple circuit.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, other drawings may also be obtained based on these drawings.

Fig. 1 is the system block diagram of the utility model；

Fig. 2 is the optic electric interface partial circuit schematic diagram of the utility model；

Fig. 3 is the power conversion part circuit diagram of the utility model；

Fig. 4 is the instruction and switching part circuit diagram of the utility model.

Specific implementation mode

All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive Feature and/or step other than, can combine in any way.

This specification（Including any accessory claim, abstract and attached drawing）Disclosed in any feature, except non-specifically chatting It states, can be replaced by other alternative features that are equivalent or have similar purpose.That is, unless specifically stated, each feature is only It is an example in a series of equivalent or similar characteristics.

As shown in Figure 1, including ethernet transceiver chip, optical interface circuit, optical module, secondary power supply translation circuit and DC power supply inputs, and DC power supply is input to secondary power supply translation circuit, and ethernet transceiver chip is connected by optical interface circuit Optical module is connect, secondary power supply translation circuit output end connects ethernet transceiver chip.Ethernet transceiver chip includes ether Net level-conversion circuit and photoelectric receiving circuit, optical interface circuit connect Ethernet electricity by photoelectric receiving circuit Flat translation circuit, Ethernet level-conversion circuit connect transmission with photoelectric receiving circuit, Ethernet level-conversion circuit Input/output terminal installs a RJ45 interface.

Network signal from external equipment is linked into RJ45 network interface seats, by being linked into ether after network transformer Net transponder chip, ethernet transceiver chip into the extraction of row clock, the regeneration of data, and solve Ethernet information The switched circuit of chip interior is given after code, protocol processes, storage；Network transceivers chip is to the optical signal from optical fiber simultaneously It into the extraction of row clock, data reproduction, and is decoded, is sent to the switched circuit of chip interior after protocol processes, in transceiver Under the control of chip, the exchange processing of the network telecommunication number from RJ45 interfaces and the network optical signal from optical fiber is completed.

The feed of circuit is not necessarily to independent power supply adaptor, is directly derived from external equipment, internal electricity by the terminal on circuit Source is up to the DC-DC high frequencies of 95% synchronizing current feedback model control PWM using support more than 24V input voltage transfer efficiencies The low pressure that 5V ~ 24V from remaining equipment is converted to 3.3V by supply convertor is fed to internal circuit and optical module, and high frequency is high Transfer efficiency chip greatly reduces circuit devcie volume and calorific value, in combination with the inclined of the PECL interfaces to optical module It sets and equipment volume is greatly reduced in conjunction with the heat dissipation design of pcb board using low power dissipation design, it is embedded so as to flexibly realize Using.

In fig. 2, J1 is that RJ45 connecting seats are connected with the network interface of external equipment, and J1 carries two indicator lights, comes from The LED_TP_LINK power ports connection status and LED_TP_SPD power ports connection speed of exchange chip U2 is connect by resistance R34 ~ R35 Onto the indicator light of J1, the state instruction and breakdown judge of power port are realized.Input network differential line from J1 is logical to RXP/RXM It is exported to the exchange chip U2 processing of Fig. 2 after crossing network transformer T1 conversions and isolation, the output signal of U2 passes through network differential Line is connected to network transformer T1 to TXOP/TXOM, and output difference separated time is formed after the isolation and driving for passing through T1 to TXP/TXM It is output to J1, external equipment is output to by J1, R15 ~ R17 and C27 ~ C28 constitute the impedance matching circuit of transformer T1.

Intelligent acess is to optical transceiver integrated module U3, the differential transmission signals FXTDP/FXTDM from exchange chip U2 Transmitting the input pin TPTX-/TPTX+, U3 of optical module U3 are coupled to by electric signal by C2/C18 using AC coupled mode Optical signal launch being converted to optical fiber, R41 ~ R42 and R45 ~ R46 complete the biasing to TPTX-/TPTX+ differential signals, R41 ~ R42 and R45 ~ R46 uses low power consumption resistance matching network, but is unsatisfactory for the impedance of PECL, therefore resistance is added and realizes PECL Impedance matching, R28 ~ R29 completes the biasing and impedance matching of U2 end Difference signal pair FXTDP/FXTDM.U3 will be received simultaneously The converting optical signals from optical fiber arrived are that electric signal Difference signal pair TRRX+/TPRX- is exported by C24 ~ C25 AC coupleds To the FXRDP/FXRDM of U2, the level bias of R43 ~ R44 and R47 ~ R48 completion Difference signal pairs TRRX+/TPRX-, R30 ~ R33 The level bias of FXRDP/FXRDM differential pairs is collectively formed with C7.U3 is the optical module of included backlight detection output, input light Power is drawn by SD, and R2 ~ R4 realizes the biasing to the SD signals of PECL level and voltage division processing, forms the light for meeting U2 requirements Power detection signal FXSD is exported to U2.The 3.3V feeds VDD33 of power conversion chip U1 outputs in Fig. 2 passes through patch Inductance L3 completes to feed to optical module U3, and in conjunction with low-power consumption PECL biasing circuits, 40% power consumption is reduced compared with traditional approach.

In figure 3, the feed from external equipment is introduced by DC socket J2 or phoenix terminal socket J3 in this equipment, Protections of the input power VIN through TVS pipe D4 is exported reachable using inputting to DC power supply transformation chip U1, U1 by inductance R23 24V, efficiency are depressured DC chips up to 95% high integration synchronous rectification, thus greatly reduce the unwanted losses of power conversion, The package size for reducing component, it is particularly critical in the case of input voltage height.U1 becomes the voltage of the maximum 24V of input It is changed to the 3.3V low pressure VDD33 of this equipment needs, VDD33 is completed to optical module, the feed of indicator light, since U2 is presented using 2.5V Electricity, to reduce device usage amount, the present apparatus cleverly uses silicon rectifier diode D1, is pressed using the forward direction of silicon diode 0.7V VDD33 is depressured by diode D1 after the filtering for passing through capacitance at the DVCC of 2.5V and is presented to exchange chip U2 numerical portions by drop Electricity, DVCC form the analog portion feed for forming AVCC to exchange chip U2 after LC filter networks by inductance L1 and capacitance.

In Fig. 4, the exchange chip U2 of low-power consumption of new generation receives the network telecommunication number from J1, is decoded, stores Deng by the switching matrix of chip exchanging to optical interface after processing, it is output to optical fiber after completing electric light variation by optical module U3, U2 is received be converted to the network optical signal of electric signal through optical module U3 from optical fiber simultaneously, is decoded, store etc. and is logical after processing The switching matrix for crossing chip exchanges to electrical interface, and being output to network interface J1 by transformer T1 is output to external equipment.U2 is logical The signal analysis to optical port is crossed, luminous power LED_FX_SD, light connects LED_FX_LINK/FX_FULL, optical port operating mode are formed LED_FX_FDX status informations are output to instruction of four integrated LED indicator light D6 completions to the various states of optical port, while U2 is passed through The analysis to power port signal is crossed, power port is formed and connects LED_TP_LINK, power port rate LED_TP_SPD status informations are output to J1 Integrated indicator light on complete instruction to power port status information.

The utility model has the beneficial effects that：The utility model realizes that the wide scope of 5V ~ 24V is defeated using efficient power chip The quadratic transformation for entering voltage greatly reduces electricity in conjunction with the low-power consumption offset design of low-power consumption dedicated network chip and optical module Road power consumption and volume so that high-density applications are possibly realized, and the fiber direct connection of original equipment can be realized by embedded use. The present apparatus uses high integration low-power consumption special chip and efficient conversion electric power chip, simple circuit.

Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to In this, any change or replacement expected without creative work should be covered within the scope of the utility model. Therefore, the scope of protection of the utility model should be determined by the scope of protection defined in the claims.

Claims (3)

1. a kind of high density can be embedded in photoelectric receiving device, it is characterised in that：Including ethernet transceiver chip, optical interface electricity Road, optical module, secondary power supply translation circuit and DC power supply input, DC power supply are input to secondary power supply translation circuit, with Too net transponder chip connects optical module by optical interface circuit, and secondary power supply translation circuit output end connects ethernet transceiver Chip.

2. high density as described in claim 1 can be embedded in photoelectric receiving device, it is characterised in that：The ethernet transceiver Chip includes Ethernet level-conversion circuit and photoelectric receiving circuit, and optical interface circuit passes through photoelectric receiving circuit Ethernet level-conversion circuit is connected, Ethernet level-conversion circuit connect transmission with photoelectric receiving circuit.

3. high density as claimed in claim 2 can be embedded in photoelectric receiving device, it is characterised in that：The Ethernet level becomes The input/output terminal for changing circuit installs a RJ45 interface.