CN102761361A - Low-consumption optical module, and realization method and realization circuit thereof - Google Patents

Low-consumption optical module, and realization method and realization circuit thereof Download PDF

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CN102761361A
CN102761361A CN2012102586051A CN201210258605A CN102761361A CN 102761361 A CN102761361 A CN 102761361A CN 2012102586051 A CN2012102586051 A CN 2012102586051A CN 201210258605 A CN201210258605 A CN 201210258605A CN 102761361 A CN102761361 A CN 102761361A
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circuit
power supply
step
connected
low
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CN2012102586051A
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吴锡贵
张华�
王三
赵平
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青岛海信宽带多媒体技术有限公司
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Abstract

The invention discloses a low-consumption optical module, and a realization method and a realization circuit thereof. The realization method comprises the following steps: reading output voltage of a system power supply which powers the optical module; reducing the output voltage into a low voltage which is required to ensure the normal operation of a function circuit unit of the optical module; and sending the low voltage as the supply voltage to the corresponding function circuit unit. The realization method has the advantages of simplicity and low cost, and is easy to apply in the optical module.

Description

低功耗光模块的实现方法、实现电路及光模块 Low power implementation of an optical module, an optical module circuit and achieve

技术领域 FIELD

[0001] 本发明涉及光通信技术领域,具体地说,是涉及低功耗的光模块,更具体地说,是涉及低功耗光模块的实现方法、实现电路及光模块。 [0001] The present invention relates to the field of optical communications technology, particularly, to low-power optical module, and more particularly, is directed to a method to achieve low power consumption of the optical module, the optical module circuit and implemented.

背景技术 Background technique

[0002] 近年来,光模块的发展越来越迅猛,对光模块低功耗和小型化要求的趋势也越来越明显。 [0002] In recent years, more and more rapid development of the optical module, the optical module and low power requirements of the miniaturization trend of more and more obvious. 设备厂商通信设备的体积越来越小,接口板包含的接口密度越来越高,都要求光模块向低功耗、小型化的方向发展。 Volume Manufacturer communication devices become smaller and smaller, the density of the interface boards include increasing, optical modules are required to develop low power consumption, miniaturization direction. 如SFP+ LR光模块,设备厂商普遍要求其功耗做到IW以内,有的设备厂商更是要求做到0. 8W以内。 Such as SFP + LR optical modules, power equipment manufacturers generally required to do within IW, some equipment manufacturers is required to do within 0. 8W. 针对SFP+ ZR光模块,设备厂商也要求做到I. 5W以内的功耗。 For optical SFP + ZR module, power equipment manufacturers are also required to do within I. 5W. 如果光模块体积减小,会造成散热困难,从而增加了光模块的功耗,因此,对光模块低功耗和小型化的要求是相矛盾的,所以,如何有效降低功耗成为了光模块实现低功耗和小型化发展尤为重要的问题。 If the volume of the optical module is reduced, the heat dissipation can cause difficulties, thereby increasing the power consumption of the optical module, therefore, the optical module of low power consumption and miniaturization requirements are contradictory, therefore, how to effectively reduce the power consumption of the optical module becomes low power consumption and miniaturization is particularly important issue.

[0003] 传统的降低光模块功耗的方法,一般是选用低功耗的集成芯片和高斜向率、高率禹合效率的激光器组件。 [0003] The traditional method of reducing the power consumption of the optical module, typically use low power and high integration chip oblique, high co-efficient of Yu laser assembly. 这种降低光模块功耗的方法存在下述缺陷:一是非常依赖集成芯片和光器件组件自身的工艺和性能,非常依赖集成芯片供应厂商和光器件供应厂商对低功耗产品的投入与支持力度;二是这类芯片和激光器组件价格更昂贵,增加了光模块的成本,从而削弱了产品的竞争力;再者,已经采用低功耗集成芯片和高斜向率、高耦合效率的激光器组件后,却仍然达不到设备厂商的低功耗要求时,这种降低光模块功耗的方法立马会走入一个死胡同,面对客户的低功耗要求,显得无能无力。 The presence of such a method for reducing power consumption of the optical module of the following defects: First, very dependent on an integrated chip and an optical device assembly process and its performance is very dependent on the integrated optical chip supply device manufacturers and suppliers input and support for low-power products; Second, such a laser chip and the assembly more expensive, it increases the cost of the optical module, thus weakening the competitiveness of the product; Furthermore, low-power integrated chip has and oblique high rate, the high coupling efficiency of the laser assembly , but still fall short of equipment manufacturers of low power requirements, this approach reduces the power consumption of the optical module will immediately into a dead end, customer-facing low power requirements, it is incompetent and weak.

发明内容 SUMMARY

[0004] 本发明的目的之一是提供一种低功耗光模块的实现方法,通过降低光模块的供电电压达到降低功耗的目的,实现简单,成本较低。 [0004] One object of the present invention is to provide a low-power optical module implemented method, by reducing the supply voltage of the optical module to achieve the purpose of reducing power consumption, simple, low cost.

[0005] 为实现上述技术目的,本发明的实现方法采用下述技术方案来实现: [0005] To achieve the above technical object, the present invention is to realize the method using the following technical solution to achieve:

一种低功耗光模块的实现方法,其特征在于,读取为光模块供电的系统供电电源的输出电压,将输出电压降低至光模块功能电路单元正常工作所容许的低电压,将该低电压作为供电电压传输至相应的功能电路单元。 A method for implementing low power consumption of the optical module, wherein the optical module reads an output voltage of the power supply system of the power supply, the output voltage is reduced to the optical functional circuit module unit is operating normally allowed by a low voltage, the low voltage as the supply voltage is transmitted to the respective functional circuit units.

[0006] 本发明的目的之二是提供一种低功耗光模块的实现电路,通过在电路中设置降压电路单元,可以在不影响光模块中功能电路单元正常工作的前提下降低其供电电压,进而实现降低功耗的目的。 [0006] Second object of the present invention is to provide an optical module to achieve low-power circuits, by providing the step-down circuit unit in the circuit can be made without compromising the optical functional circuit modules in the unit is operating normally reducing its power supply voltage, thus achieving the purpose of reducing power consumption.

[0007] 为实现上述技术目的,本发明的实现电路采用以下技术方案予以实现: [0007] To achieve the above technical object, the present invention is to realize a circuit employs the following be implemented:

一种光模块用低功耗电路,包括多个功能电路单元及为功能电路单元供电的系统供电电源,还包括有降压电路单元,部分或全部功能电路单元的电源端经降压电路单元与系统供电电源相连接。 An optical module with a low-power circuit, the circuit comprising a plurality of functional units and a power supply system for the supply of the functional unit circuit further comprises a step-down circuit unit, part or all of the power supply circuit unit via the terminal functional unit and the step-down circuit The system is connected to the power supply.

[0008] 如上所述的实现电路,为兼顾电路结构简化与低功耗,所述降压电路单元的数量为1,所述多个功能电路单元的电源端分别与降压电路单元相连接,进而经降压电路单元与所述系统供电电源相连接。 [0008] The circuit as described above to achieve for both low power consumption and simplify the circuit configuration, the number of units is the step-down circuit 1, the power supply terminal of the plurality of functional circuit units are connected to the step-down circuit unit, Further step-down circuit means is connected via the power supply system.

[0009] 如上所述的实现电路,为最大限度地实现各功能电路单元的低功耗,所述降压电路单元的数量与所述功能电路单元的数量相等,每个功能电路单元的电源端分别连接一个降压电路单元,进而经降压电路单元与所述系统供电电源相连接。 [0009] implemented circuit as described above, to maximize low-power circuits of each functional unit, the number equal to the number of the functional circuit of the step-down circuit unit cells, each cell of the functional circuit power supply terminal are connected to a step-down circuit unit in turn is connected via the step-down circuit unit and the power supply system.

[0010] 如上所述的实现电路,所述降压电路单元可以采用下述结构来实现:包括有可控开关,可控开关中开关通路的电流流入端与所述系统供电电源的电源端相连接,而开关通路的电流流出端经LC串联低通滤波器与系统供电电源的接地端相连接,LC串联低通滤波器的两端并联有续流二极管,与降压电路单元连接的所述功能电路单元的电源端与LC串联低通滤波器中的电容C的正极相连接。 [0010] implemented circuit as described above, the step-down circuit unit may be implemented using the following structure: including a controllable switch, a controllable switch in the switch current path of said inflow end of the supply terminal of the power supply system connection, and the current passage through the outflow end of the switch to ground the low pass filter LC series power supply terminal of the system is connected across the series LC low-pass filter connected in parallel with a freewheeling diode connected to said step-down circuit unit power supply terminal and the functional unit is an LC series circuit of the positive electrode of the low-pass filter capacitor C is connected.

[0011] 其中,所述可控开关为三极管或MOS管中的任一种。 [0011] wherein any one of said controllable switch is a MOS transistor or a tube.

[0012] 此外,本发明还提供了一种光模块,通过在光模块中设置低功耗电路,能够以较低的成本实现光模块的低功耗性能。 [0012] Further, the present invention provides an optical module, by providing the low-power circuit in the optical module can be realized at low cost low power consumption of the optical module.

[0013] 为实现上述技术目的,本发明的光模块采用下述技术方案来实现: [0013] To achieve the above technical object, the optical module of the present invention adopts a technical solution to achieve:

一种光模块,包括接收机电路单元、发射机电路单元、控制电路单元及光组件共四个功能电路单元,还包括有降压电路单元,四个功能电路单元中的部分单元或全部单元的电源端经降压电路单元与为相应单元供电的系统供电电源相连接。 An optical module includes a receiver circuit unit, a transmitter circuit unit, and a control circuit unit optical module of four functional circuit unit further comprises a step-down circuit unit, part of functional circuit unit four units or all units step-down circuit via the power source terminal is connected to the power supply unit for a respective power supply units of the system.

[0014] 如上所述的光模块,为兼顾电路结构简化、光模块小型化及低功耗性能,所述降压电路单元的数量为1,所述四个功能电路单元的电源端分别与降压电路单元相连接,进而经降压电路单元与为相应功能电路单元供电的系统供电电源相连接。 [0014] The optical module as described above, to simplify the structure both circuit, miniaturization of the optical module and low power consumption, the number of units is the step-down circuit 1, the four power supply units are terminal functional circuit and drop voltage circuit unit is connected to further units via the step-down circuit connected to the power supply circuit for the corresponding functional unit of the system power supply.

[0015] 如上所述的光模块,为最大限度地实现各功能电路单元的低功耗、从而实现最低的光模块功耗,所述降压电路单元的数量为4,所述四个功能电路单元分别与其中一个降压电路单元相连接,进而经降压电路单元与为功能电路单元供电的系统供电电源相连接。 [0015] The optical module as described above, to maximize low-power circuits of each functional unit, thereby achieving the lowest power consumption of the optical module, the number of the step-down circuit unit is 4, the four functional circuit and wherein each unit cell is connected to a step-down circuit, and further via the step-down circuit means is connected to the functional circuit unit for the supply of the power supply system.

[0016] 如上所述的光模块,所述降压电路单元采用下述结构来实现:包括有可控开关,可控开关中开关通路的电流流入端与所述系统供电电源的电源端相连接,而开关通路的电流流出端经LC串联低通滤波器与系统供电电源的接地端相连接,LC串联低通滤波器的两端并联有续流二极管,与降压电路单元连接的所述功能电路单元的电源端与LC串联低通滤波器中的电容C的正极相连接。 [0016] The optical module described above, the step-down circuit unit has a configuration to realize: a controllable switch comprises a controllable switch in the switch current path of said inflow end of the supply end of the power supply system is connected , while the ground terminal of the switch via a current flowing through the LC series low-pass filter connected to the system power supply end, both ends of the LC low-pass filter in series with a parallel freewheeling diode connected to the function of the step-down circuit unit power supply terminals of the circuit unit and the low-pass filter LC series positive electrode of the capacitor C is connected.

[0017] 其中,所述可控开关为三极管或MOS管中的任一种。 [0017] wherein any one of said controllable switch is a MOS transistor or a tube.

[0018] 与现有技术相比,本发明的优点和积极效果是:本发明利用光模块中的功能电路单元具有较宽供电电压范围的特点,通过设置降压电路单元,将功能电路单元的实际工作电压降低至容许的低电压,降低了功能电路单元的功耗,进而以较低的成本和简单的结构实现了光模块的低功耗性能,满足了设备厂商所提出的低功耗要求,增加了产品竞争力。 [0018] Compared with the prior art, the advantages and positive effects of the invention are: the use of the present invention, the functional circuit modules in the optical unit having the characteristics of a wide supply voltage range, by providing the step-down circuit unit, the functional circuit unit actual operating voltage decreases to a low allowable voltage, reducing the power consumption of the functional circuit unit, and thus at a lower cost and a simple structure of low power performance of the optical module, to meet the low power requirements of the proposed equipment manufacturers increase the competitiveness of products.

[0019] 结合附图阅读本发明的具体实施方式后,本发明的其他特点和优点将变得更加清 [0019] read in conjunction with the specific embodiments of the present invention, the drawings Other features and advantages of the invention will become clear

/E. o / E. O

附图说明 BRIEF DESCRIPTION

[0020] 图I是本发明具有低功耗实现电路的光模块一个实施例的结构示意图; [0020] FIG. I of the present invention is an optical module having a low power consumption circuit diagram of an embodiment of a structure;

图2是本发明具有低功耗实现电路的光模块另一个实施例的结构示意图; Figure 2 is an optical module according to the present invention has low power consumption circuit schematic structural diagram of another embodiment;

图3是降压电路单元一个实施例的具体电路原理图。 FIG 3 is a schematic circuit diagram of a specific embodiment of the step-down circuit unit. 具体实施方式 Detailed ways

[0021] 下面结合附图对本发明的具体实施方式进行详细的描述。 Drawings of embodiments of the present invention will be described in detail [0021] below in conjunction.

[0022] 首先,简要说明本发明的技术设计出发点:现有光模块中的功能电路单元一般均采用集成芯片来实现,在集成芯片的电气特性中,针对电源的供电电压,一般都标注有一个较宽的电压范围,在该电压范围内集成芯片都能够正常工作。 [0022] First, a brief description of the technical design of the present invention, the starting point: conventional optical module in the functional circuit units generally used integrated chip implemented in an integrated chip electrical characteristics for the supply voltage source, generally marked with a wide voltage range, the integrated chip can work in this voltage range. 如果芯片的供电电压越低,其功耗就越低。 If the lower supply voltage of the chip, lower power consumption.

[0023] 本发明结合该特性,提出了一种低功耗光模块的实现方法。 [0023] The present invention combines the properties, method of implementing a low-power optical module. 具体来说,首先读取为光模块供电的系统供电电源的输出电压;然后,将输出电压降低至光模块功能电路单元正常工作所容许的低电压,例如,降低至所容许的最低电压;最后,将该低电压作为供电电压传输至相应的功能电路单元。 Specifically, first, the optical module reads the output voltage of the power supply system of the power supply; then, the output voltage is reduced to the optical functional circuit module unit is operating normally allowed by a low voltage, e.g., lowered to the minimum allowable voltage; final , the low voltage as the supply voltage is transmitted to the respective functional circuit units. 这样,在不影响功能电路单元正常工作的前提下,尽量降低其供电电压,从而达到降低功耗的目的。 Thus, without affecting the function of the circuit unit operates normally, to minimize its power supply voltage, which can reduce power consumption. 利用该方法实现光模块的低功耗,实现简单,成本较低,易于推广应用。 The method enables low power consumption by using the optical module, simple, low cost and easy application.

[0024] 为了应用上述实现方法来达到降低光模块功耗的目的,从硬件上来说,可以在光模块系统供电电源与功能电路单元之间设置降压电路,以对供电电源所输出的电压进行降压处理,满足功能电路单元低功耗的供电需求。 [0024] In order to achieve the above-described application method to achieve the purpose of reducing the power consumption of the optical module, from the hardware, the step-down circuit may be provided between the light module and the power supply system functional circuit unit to the power supply voltage outputted by reduction processing unit meet the power needs of the functional circuit of low power consumption. 具体结构可以参考下述实施例的描述。 Specific structure may be described with reference to the following examples.

[0025] 请参考图I所示的本发明具有低功耗电路的光模块一个实施例的结构示意图。 [0025] Please I in the present invention with reference to FIG schematic structural diagram of one embodiment of an optical module having a low-power circuit.

[0026] 如图I所示,该实施例的光模块包括有发射机电路单元11、接收机电路单元12、控制电路单元13及光组件14共四个功能电路单元,系统主板上的系统供电电源17通过光模块的电接口16为这四个功能电路单元供电。 [0026] As shown in FIG I, the optical module of this embodiment comprises a transmitter circuit unit 11, 12, 13 and the optical assembly 14 of four functional circuit unit control circuit unit, the power supply system on the system board receiver circuit unit power source 17 via the electrical interface of the optical module 16 is that four functional units supply circuit. 根据光模块的有关标准规定,系统供电电源17为光模块各功能电路单元的供电要满足标准的TTL电平。 According to the optical module a predetermined standard, the system power supply 17 to supply each of the optical modules to meet the functional circuit unit standard TTL levels. 且不同封装形式的光模块所需要的电源不同,因此,有的系统主板能够提供3. 3V和5V两种供电电源,有的系统主板仅能提供3. 3V的供电电源。 And the power of the optical module package types differ needed, therefore, possible to provide some system board 3. 3V and 5V two power supply, motherboard some systems provide only a 3. 3V power supply. 为了统一进行表述,图中各功能电路单元的供电采用虚线进行示意,表示各供电电路单元的供电可以是相同或不同的电源网络信号,但均是来自于系统供电电源17。 In order to be expressed in a unified, FIG supply unit of each functional circuit schematic in dashed, it indicates that the power supply of each circuit unit may be the same or different power supply network signal, but all from the power supply system 17.

[0027] 为实现光模块的低功耗,尤其为降低发射机电路单元11、控制电路单元13及光组件14的功耗,该实施例的光模块还设置有一个与电接口16相连接的降压电路单元15,发射机电路单元11的电源端110、控制电路单元13的电源端130及光组件14的电源端140分别与降压电路单元15相连接,进而经降压电路单元15及电接口16与系统供电电源17相连接。 [0027] In order to achieve low power consumption of the optical module, in particular to reduce the transmitter circuit 11, the control assembly 14 and the optical power circuit unit 13, the optical module of this embodiment is also provided with a socket 16 is electrically connected to step-down circuit unit 15, the transmitter circuit end 110 power unit 11, the control circuit unit 13 of the terminal end of the power supply 130 and 140 respectively of the optical module 14 is connected to the step-down circuit 15 units, and 15 via the step-down circuit means electrical interface 16 to the system power supply 17 is connected. 来自系统供电电源17的电源信号通过降压单路单元15进行直流降压,转换成能够同时满足发射机电路单元11、控制电路单元13及光组件14容许的低电压信号,这三个功能电路单元在低电压的电源信号下工作,从而降低了其功耗。 Power signal from the power supply system 17 is performed by the step-down DC buck single unit 15, converted into a unit capable of satisfying the transmitter circuit 11, 13 and 14 of the optical component allow the low voltage signal control circuit unit, these three function circuits signal supply unit operates at a low voltage, thereby reducing its power consumption.

[0028] 对于功耗要求不是很高的光模块来说,从简化电路结构方面考虑,可以采用该实施例所述的设置一个降压电路单元15的结构,且根据不同功能电路单元的电源电压范围要求,通过该降压电路单元15为其中三个功能电路单元的电源电压进行降压,而接收机电路单元12之间通过系统供电电源17来供电。 [0028] For not very high power requirements for the optical module, from the viewpoint of simplifying a circuit configuration, a structure is provided in the embodiment of the step-down circuit unit 15 embodiment may be employed, and the power supply voltage different functional circuit unit range requirements, stepped down by the step-down circuit unit 15 in which three power supply voltage functional circuit unit, and the receiver circuit unit 17 powered by the system power supply 12. 降压电路单元15可以采用现有技术中能够实现直流降压的各种电路结构来实现,其中的一个具体电路可以采用图3所示的结构,且其降压原理及与光模块相关电路的连接可参考下述对图3的描述。 Step-down circuit unit 15 may employ the prior art, various circuit configurations can be realized to achieve DC buck, wherein a specific circuit configuration shown in Figure 3 may be employed, and the step-down principle and related circuitry of the optical module connection may be described with reference to the following FIG. 3.

[0029] 如果要求光模块的功耗尽可能的低,在其每个功能电路单元所允许的最低供电电压均不相同时,则可以考虑为每个功能电路单元配置一个降压电路单元,以使得各功能电路单元均能工作在允许的最低电源电压下,以最大限度降低每个功能电路单元的功耗,进而降低整个光模块的功耗。 [0029] If the power consumption of the optical module requires as low as possible, the minimum supply voltage in each functional circuit units are not allowed by the same, may be considered as a step-down circuit unit of each functional circuit unit is configured to so that each functional circuit units can work at the minimum allowed supply voltage to minimize power consumption of each function circuit unit, thereby reducing the power consumption of the optical module. 具体可参考图2所示的实施例及下述对图2实施例的描述。 Specific embodiments described with reference to FIG embodiments and the following Examples 2 shown in FIG.

[0030] 如图2所示,该实施例示出了本发明具有低功耗电路的光模块另一个实施例的结构示意图。 [0030] As shown in FIG 2, this embodiment illustrates an optical module of the present invention having a low-power circuit schematic structural diagram of another embodiment.

[0031] 该实施例的光模块也包括有发射机电路单元21、接收机电路单元22、控制电路单元23及光组件24共四个功能电路单元,系统主板上的系统供电电源27通过光模块的电接口26为这四个功能电路单元供电。 [0031] The optical module of this embodiment also includes a transmitter circuit unit 21, a receiver circuit unit 22, the control circuit unit 23 and the light assembly 24 means a total of four functional circuits, power supply system on the system board 27 through the optical module the electrical interface 26 of the four functional units supply circuit. 与图I实施例类似,为了统一进行表述,图中各功能电路单元的供电采用虚线进行示意,表示各供电电路单元的供电可以是相同或不同的电源网络信号,但均是来自于系统供电电源27。 FIG I Example is similar to unified presentation, FIG power of each functional circuit means in dashed schematic, showing the power supply for each power supply circuit unit may be the same or different power supply network signal, but are derived from the system power supply 27.

[0032] 为降低光模块中各功能电路单元的功耗,进而降低整个光模块的功耗,该实施例在每个功能电路单元的供电电路中各设置了一个直流降压电路单元。 [0032] To reduce the power consumption of the optical module of each functional circuit units, thereby reducing the power consumption of the optical module, this embodiment is provided in each unit circuit a DC buck power supply circuit in each functional circuit unit. 具体来说,共包括有四个降压单路单元251、252、253及254,这四个降压电路单元一端分别与电接口26相连接, 另一端分别与接收机电路单元22的电源端220、发射机电路单元21的电源端210、光组件24的电源端240及控制电路单元23的电源端230相连接。 Specifically, it includes four step-down units 252, 253 and 254 one-way, four-phase step-down circuit unit are electrically connected to one end of the interface 26, the other end of the receiver circuit unit 22 of the power supply terminal 220, the power supply circuit unit 21 ends the transmitter 210, the power terminal 240 of the optical assembly 24 and a control circuit unit 23 of the power supply terminal 230 is connected. 来自系统供电电源27的电源信号分别通过各降压单路单元进行直流降压,转换成能够分别满足接收机电路单元22、发射机电路单元21、光组件24及控制电路单元23所能容许的低电压信号,使得这四个功能电路单元均工作在低电压的电源信号下,功耗较低,从而最大限度地降低了光模块的功耗。 Power signal from the system power supply 27 are performed through the step-down DC buck single unit, it can be converted to meet the receiver circuit unit 22, a transmitter circuit unit 21, the optical assembly 24 and the control circuit unit 23, respectively, that can be tolerated low voltage signal, so that four functional circuit units are operated at low signal supply voltage, lower power consumption, thereby minimizing power consumption of the optical module.

[0033] 各降压电路单元可以采用现有技术中能够实现直流降压的各种电路结构来实现,其中的一个具体电路可以采用图3所示的结构,且其降压原理及与光模块相关电路的连接可参考下述对图3的描述。 [0033] each of the step-down circuit means may be employed to perform the various prior art circuit configuration of the DC buck achieved, wherein a specific circuit configuration shown in Figure 3 may be employed, and the optical module principle and the buck connection associated circuitry may be described with reference to the following FIG. 3.

[0034] 该实施例所述的为每个功能电路单元各设置一个降压电路单元的情况适合于各功能电路单元所允许的最低供电电压均不相同的情况,如果存在供电电压范围、尤其是最低供电电压相同的功能电路单元,可以采用同一个功能电路单元,如图I实施例所述,其他供电不同的功能电路单元再采用另外的功能电路单元,这样就能够保证每个功能电路单元均工作在不影响其正常工作性能的最低功耗下。 [0034] This embodiment of a step-down circuit is provided for each unit cell circuit for each function described in the case where the functional circuit unit is adapted to allow the minimum supply voltage are not the same situation, if the presence of the supply voltage range, in particular the minimum supply voltage of the same functional circuit unit, the circuit may employ the same functional unit, as shown in Example I of the embodiment, various other functions of the power supply circuit cells and then using additional functional circuit unit, so it can ensure that each functional circuit units are work without affecting the normal performance of the lowest power consumption.

[0035] 请参考图3,该图3所示为上述两个实施例的光模块中降压电路单元一个实施例的具体电路原理图。 [0035] Please refer to FIG. 3, FIG. 3 is a step-down circuit in the optical module unit with two specific embodiments of a schematic circuit diagram of an example of embodiment.

[0036] 如图3所示,结合图I及图2所示的光模块结构示意图,该实施例的降压电路单元包括有可控开关S,其具有开关通路及控制端,其中,可控开关S的开关通路的电流流入端a与系统供电电源的电源端VCC相连接,而开关通路的电流流出端b经电感L和电容C串联构成的LC串联低通滤波器与系统供电电源的接地端GND相连接。 [0036] As shown, in conjunction with FIGS. I and FIG schematic configuration of the optical module shown in FIG. 2, step-down circuit comprises a controllable unit according to this embodiment switch S, which has a switching path and a control terminal 3, wherein the controllable a current path switch switches S inflow end power supply terminal VCC a power supply system is connected, and the current flowing out of the ground switch paths LC low-pass filter in series with the power supply system via the terminal b of the inductance L and capacitance C is connected in series terminal GND is connected. 而且,在LC串联低通滤波器的两端还并联有续流二极管D,其中,二极管D的正极与电容C的负极相连接,二极管D的正极连接在可控开关S开关通路中的电流流出端b及电感L之间的连接线上。 Further, both ends of the LC series low-pass filter is further connected in parallel freewheel diode D, wherein the positive electrode and the negative electrode of the capacitor C is connected to the diode D, the diode D is connected to the positive electrode current controllable switch S switches outflow passage the connecting line between the terminal b and an inductor L. 可控开关S可以选用三极管或MOS管来实现,或者选用其他能够实现可控的开关来实现。 Controllable switch S may be selected to achieve transistor or MOS transistor, or use other controllable switching can be realized to achieve.

[0037] 在使用上述电路结构的降压电路单元时,功能电路单元的电源端将与LC串联低通滤波器中的电容C的正极、也即图中的端子e相连接。 [0037] When using the step-down circuit means of the circuit configuration, the power supply terminal of the functional circuit means in series with the LC low-pass filter in the positive electrode of the capacitor C, i.e., the terminal e is connected in FIG. 此时,整个降压电路单元的工作原理如下: At this time, the working principle of the whole step-down circuit unit is as follows:

可控开关S作为一个全控元件,可以在外部PWM信号的控制下选择性导通和截止。 Controllable switch S as a full-controlled element can be selectively turned on and off under the control of an external PWM signal. 假设PWM控制信号的周期为T,占空比为d,可控开关S将在I e[OJT]时导通,在I e\dT,T]截止。 Turned on when the PWM control signal assuming a period T, the duty ratio d, the controllable switch S e [OJT] on I, the I e \ dT, T] is turned off. 在可控开关S导通时,二极管D截止,系统供电电源的电源端VCC为电容C充电。 When the controllable switch S is turned on, the diode D is turned off, the power supply terminal VCC is a system power supply charging the capacitance C. 在可控开关S截止时,二极管D导通,电容C将通过二极管D放电。 When the controllable switch S is turned off, the diode D is turned on, the capacitor C will discharge through the diode D. 此过程中,根据伏秒平衡公式,电容C的正极e处的电压、即输出电压Vo=VCC*d。 This process, according to the volt-second balance equation, the voltage at the positive electrode e capacity C, i.e. the output voltage Vo = VCC * d. 由于占空比d小于等于1,因此,通过选择合适占空比d的控制信号,可以实现降压输出。 Since the duty cycle d is less than or equal to 1, and therefore, by selecting a suitable duty cycle of the control signal d may be realized step-down output. 而且,选择合适的电容C及电感L的值,能够使得其输出的降压信号满足与之相连接的功能电路单元的供电电压需求。 Further, selecting a suitable value of the capacitance C L and the inductor, so that the step-down signal can be outputted meet its functional requirements supply voltage circuit unit connected thereto.

[0038] 以上实施例仅用以说明本发明的技术方案,而非对其进行限制;尽管参照前述实施例对本发明进行了详细的说明,对于本领域的普通技术人员来说,依然可以对前述实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或替换,并不使相应技术方案的本质脱离本发明所要求保护的技术方案的精神和范围。 [0038] The above embodiments are intended to illustrate the present invention, but not intended to be limiting;. Although the present invention has been described in detail embodiments, those of ordinary skill in the art, the foregoing can still the technical solutions described in the embodiments may be modified, or some technical features equivalents; as such modifications or replacements do not cause the essence of corresponding technical solutions to depart from the spirit and scope of the invention as claimed technical solution.

Claims (10)

1. ー种低功耗光模块的实现方法,其特征在于,读取为光模块供电的系统供电电源的输出电压,将输出电压降低至光模块功能电路单元正常工作所容许的低电压,将该低电压作为供电电压传输至相应的功能电路单元。 1. Low power implementation approaches ー optical module, wherein the optical module reads an output voltage of the power supply system of the power supply, the output voltage is reduced to the optical functional circuit module unit is operating normally allowed by the low voltage, the low voltage as the supply voltage is transmitted to the respective functional circuit units.
2. ー种低功耗光模块的实现电路,包括多个功能电路单元及为功能电路单元供电的系统供电电源,其特征在于,还包括有降压电路単元,部分或全部功能电路单元的电源端经降压电路单元与系统供电电源相连接。 2. ー low-power optical module implemented circuit, the circuit comprising a plurality of functional units and a functional circuit unit for the supply of the power supply system, characterized by further comprising step-down circuit radiolabeling element, some or all functions of the power supply circuit unit end via the step-down circuit means is connected to the power supply system.
3.根据权利要求2所述的实现电路,其特征在于,所述降压电路单元的数量为1,所述多个功能电路单元的电源端分别与降压电路単元相连接,进而经降压电路単元与所述系统供电电源相连接。 3. To achieve said circuit according to claim 2, wherein the number of units is the step-down circuit 1, the power supply terminal of the plurality of functional circuit units are connected to the step-down circuit radiolabeling element, and further down through radiolabeling circuit element and is connected to the power supply system.
4.根据权利要求2所述的实现电路,其特征在于,所述降压电路单元的数量与所述功能电路单元的数量相等,每个功能电路单元的电源端分别连接一个降压电路单元,进而经降压电路单元与所述系统供电电源相连接。 4. The circuit of claim 2 implemented, wherein the number is equal to the number of units of the functional circuit of the step-down circuit unit, a power supply terminal of each functional circuit units are connected to a step-down circuit means, Further step-down circuit means is connected via the power supply system.
5.根据权利要求2至4中任ー项所述的实现电路,其特征在于,所述降压电路单元包括有可控开关,可控开关中开关通路的电流流入端与所述系统供电电源的电源端相连接,而开关通路的电流流出端经LC串联低通滤波器与系统供电电源的接地端相连接,LC串联低通滤波器的两端并联有续流ニ极管,与降压电路单元连接的所述功能电路单元的电源端与LC串联低通滤波器中的电容C的正极相连接。 The realization of the circuit ー items 2 to 4 claims, characterized in that the step-down circuit comprises a controllable switch means, the controllable switch in the current path switch and the inflow end of the power supply system power connection end, and the outflow end of the current path through the switch to ground the low pass filter is an LC series power supply terminal of the system is connected across the series LC low-pass filter connected in parallel with a freewheeling diode Ni, buck power terminal of the functional circuit unit is a circuit unit connected to the low-pass filter LC series positive electrode of the capacitor C is connected.
6.根据权利要求5所述的实现电路,其特征在于,所述可控开关为三极管或MOS管中的任ー种。 6. Implement circuit as claimed in claim 5, characterized in that the controllable switch is a transistor or a MOS any species ー tube.
7. ー种光模块,包括接收机电路单元、发射机电路单元、控制电路单元及光组件共四个功能电路单元,其特征在于,还包括有降压电路単元,四个功能电路单元中的部分単元或全部单元的电源端经降压电路单元与为相应单元供电的系统供电电源相连接。 7. ー seed light module, the circuit unit includes a receiver, a transmitter circuit unit, and a control circuit unit optical module of four functional circuit units, characterized by further comprising step-down circuit radiolabeling membered, four functional circuit units supply terminal portion or all of the cells membered radiolabeling step-down circuit via the power supply unit is connected to a respective power supply units of the system.
8.根据权利要求7所述的光模块,其特征在于,所述降压电路单元的数量为1,所述四个功能电路单元的电源端分别与降压电路単元相连接,进而经降压电路単元与为相应功能电路单元供电的系统供电电源相连接。 8. The optical module according to claim 7, wherein the number of units is the step-down circuit 1, the four power supply terminal functional circuit units are connected to the step-down circuit radiolabeling element, and further down through radiolabeling circuit element and the corresponding function of the power circuit unit is connected to the power supply system.
9.根据权利要求7所述的光模块,其特征在于,所述降压电路单元的数量为4,所述四个功能电路单元分别与其中一个降压电路单元相连接,进而经降压电路単元与为功能电路単元供电的系统供电电源相连接。 9. The optical module according to claim 7, wherein the number of the step-down circuit unit is 4, the four functional circuit units, respectively wherein a step-down circuit means is connected via the step-down circuit further radiolabeling functional element is connected to the power supply circuit radiolabeling membered power supply system.
10.根据权利要求7至9中任一项所述的光模块,其特征在于,所述降压电路单元包括有可控开关,可控开关中开关通路的电流流入端与所述系统供电电源的电源端相连接,而开关通路的电流流出端经LC串联低通滤波器与系统供电电源的接地端相连接,LC串联低通滤波器的两端并联有续流ニ极管,与降压电路单元连接的所述功能电路单元的电源端与LC串联低通滤波器中的电容C的正极相连接;所述可控开关为三极管或MOS管中的任一种。 10.7-9 optical module as claimed in any of the preceding claims, characterized in that the step-down circuit comprises a controllable switch means, the controllable switch in the current path switch and the inflow end of the power supply system power connection end, and the outflow end of the current path through the switch to ground the low pass filter is an LC series power supply terminal of the system is connected across the series LC low-pass filter connected in parallel with a freewheeling diode Ni, buck power terminal of the functional circuit unit is a circuit unit connected to the low-pass filter LC series positive electrode of the capacitor C is connected; the controllable switch is a MOS transistor according to any one or tube.
CN2012102586051A 2012-07-25 2012-07-25 Low-consumption optical module, and realization method and realization circuit thereof CN102761361A (en)

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