Control circuit for low power consumption mode of optical module

Abstract

The utility model discloses a control circuit for a low power consumption mode of an optical module, which relates to the technical field of optical modules, and comprises an MCU, a slow start circuit, a power supply module and a load, the MCU comprises a power supply input end connected with the power supply module, a signal input pin used for receiving a low power consumption mode signal and a signal output pin used for outputting a level signal, the slow start circuit comprises a slow start chip, the slow start chip comprises an enabling pin, a power input pin and a power output pin, the enabling pin is connected with the signal output pin, and the power input pin and the power output pin are respectively connected with the power supply module and the load. According to the utility model, the MCU is adopted to directly control the enable pin of the slow start circuit to turn on and turn off the power supply of the load circuit, the control mode is simple, the reliability is good, the time cost of codes is reduced, the response speed of hardware is improved, the power consumption is lower, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical modules, and in particular to a control circuit for a low power consumption mode of an optical module. Background Art

[0002] With the continuous development of the communications industry and the widespread application of communications technology, the power consumption and carbon dioxide emissions of the communications industry are also growing rapidly worldwide.

[0003] Energy conservation and emission reduction in the communications industry include two aspects: on the one hand, through its own technological innovation, business innovation and service innovation, it helps other industries to replace and improve traditional physical service methods with information solutions to reduce social resource consumption. On the other hand, it starts from the network planning, equipment transformation, operation and maintenance of the communications industry itself, develops advanced technologies, reduces network construction and maintenance costs, thereby reducing the impact of communications networks on the environment and promoting energy conservation and emission reduction.

[0004] According to the "China Telecom Energy Saving Technology Blue Book", the reduction of power consumption of main equipment in a general computer room will drive the reduction of power consumption of other supporting equipment. Therefore, the primary measure for energy conservation and emission reduction of communication networks is energy conservation and consumption reduction of main equipment. For energy conservation and consumption reduction of main equipment, on the one hand, it can be controlled by improving the hardware design level and using hardware upgrades, and on the other hand, it can be achieved by making full use of software technology. In actual application, if some functions are not used temporarily, energy consumption can be reduced by controlling energy consumption through software. For example: when there is no business configuration, the single board dynamically shuts down the digital-analog encoding and decoding processing circuit of the corresponding optical module to achieve energy saving.

[0005] However, currently, when the optical module realizes the low power consumption mode through software, it uses the method of gradually shutting down and opening the DSP chip, CDR chip, TIA chip and TEC circuit and other loads, which usually takes about 4ms and consumes about 0.7W of power. This not only leads to a long time and high power consumption, but also has problems such as cumbersome operation and the risk of code misoperation. Therefore, it is urgent to find a more reliable, simple, short control time and lower power consumption control technology. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned technical problems existing in the prior art, and provide a control circuit for the low power consumption mode of an optical module. The utility model adopts MCU to directly control the enable pin of the soft start circuit to turn on and off the power supply of the load circuit. The control method is simple and the reliability is good, which not only reduces the time cost of the code, but also improves the response speed of the hardware. At the same time, the power consumption is lower, achieving the effect of energy saving and emission reduction.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] A control circuit for a low power consumption mode of an optical module, characterized in that it comprises an MCU, a slow start circuit, a power supply module and a load, wherein the MCU comprises a power input terminal connected to the power supply module, a signal input pin for receiving a low power consumption mode signal and a signal output pin for outputting a level signal, the slow start circuit comprises a slow start chip, the slow start chip comprises an enable pin, a power input pin and a power output pin, the enable pin is connected to the signal output pin, and the power input pin and the power output pin are respectively connected to the power supply module and the load; when the MCU receives the low power consumption mode signal, the MCU outputs a high / low level signal to the enable pin according to the level state of the low power consumption mode signal, and the slow start chip controls the off / on of the load power supply according to the high / low level signal.

[0009] A control circuit for a low power consumption mode of an optical module, characterized in that it includes a gold finger, an MCU, a slow start circuit, a power supply module and a load, wherein:

[0010] The gold finger includes a power connection terminal connected to the power supply module and a signal output terminal for outputting a low power consumption mode signal;

[0011] The MCU includes a power input terminal, a signal input pin and a signal output pin, the power input terminal is connected to the power supply module, the signal input pin is connected to the signal output terminal for receiving a low power mode signal, and the signal output pin is used to output a high / low level signal according to the level state of the low power mode signal;

[0012] The slow start circuit includes a slow start chip, which includes an enable pin, a power input pin and a power output pin. The enable pin is connected to the signal output pin for receiving a high / low level signal. The power input pin and the power output pin are respectively connected to the power supply module and the load, and control the load power supply to be turned off / on according to the high / low level signal.

[0013] The slow start circuit also includes an input filter capacitor, an output filter capacitor and a pull-down resistor. One end of the input filter capacitor is grounded, and the other end is connected to a power input pin; one end of the output filter capacitor is grounded, and the other end is connected to a power output pin; one end of the pull-down resistor is grounded, and the other end is connected to an enable pin.

[0014] The soft start chip also includes a ground pin.

[0015] The advantages of adopting the utility model are:

[0016] 1. The key improvement of the utility model in achieving low power consumption is that the MCU is used to directly control the enable pin of the slow start circuit to turn off and turn on the power of the load circuit. Compared with the traditional method of using the MCU to turn off and turn on the load step by step, the utility model uses the MCU to directly control the enable pin of the slow start circuit to turn off and turn on the load circuit. The control method is simple, and the response is fast, the time is short, the power consumption is low, and the reliability is good. It not only reduces the time cost of the code, but also improves the response speed of the hardware, and the power consumption is lower, achieving the effect of energy saving and emission reduction.

[0017] 2. In actual application, the utility model can generate a low power mode signal directly by the control system, or generate a low power mode signal by defining a gold finger pin, which is more convenient to use and helps to meet different needs.

[0018] 3. The utility model is conducive to removing clutter and ensuring the smooth output of current through input filter capacitors and output filter capacitors.

[0019] 4. The utility model can prevent the slow start circuit from automatically outputting voltage and causing abnormal power-on of the load when the MCU has not output a high-level signal to the use pin through a pull-down resistor, which is beneficial to improving the stability and reliability of the control circuit.

[0020] 5. In addition to being applied to the application scenarios of optical modules, the utility model can also be expanded to application scenarios in other fields that also require energy conservation and emission reduction requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the circuit structure of Example 1;

[0022] Figure 2 Schematic diagram of the circuit structure of Example 2. DETAILED DESCRIPTION

[0023] The control circuit described in the utility model has been actually prepared and has better technical effects after being tried by the applicant. In order to better protect the technology, the applicant has applied for a utility model patent for the technology. The utility model is described in detail below in conjunction with specific embodiments.

[0024] Example 1

[0025] like Figure 1As shown, a control circuit of a low power mode of an optical module includes an MCU, a slow start circuit, a power supply module and a load, wherein the MCU includes a power input terminal connected to the power supply module, a signal input pin for receiving a low power mode signal and a signal output pin for outputting a level signal, and the slow start circuit includes a slow start chip, and the slow start chip includes an enable pin, a power input pin, a power output pin and a ground pin, wherein the enable pin is connected to the signal output pin, and the power input pin and the power output pin are connected to the power supply module and the load respectively. When the MCU receives a low power mode signal through the signal input pin, the MCU first detects the level state of the low power mode signal, and then outputs a high / low level signal to the enable pin according to the level state of the low power mode signal, and then the slow start chip outputs a 0V / 3.3V voltage to the load according to the high / low level signal, thereby controlling the off / on of the load power supply, and realizing low power consumption control of the optical module.

[0026] According to the preferred implementation of this embodiment, the slow start circuit further includes an input filter capacitor, an output filter capacitor and a pull-down resistor. Among them, one end of the input filter capacitor is grounded, and the other end is connected to the power input pin; one end of the output filter capacitor is grounded, and the other end is connected to the power output pin; one end of the pull-down resistor is grounded, and the other end is connected to the enable pin.

[0027] Specifically, Figure 1 As shown, the power input end of the MCU is connected to the power supply module VCC_Socket, the signal input pin of the MCU is used to receive the low power mode signal LpMode sent by the optical module control system, the signal output pin of the MCU is connected to the enable pin EN of the slow start chip, and is used to output a level signal to the enable pin EN, the power input pin IN and the power output pin OUT of the slow start chip are respectively connected to the power supply module VCC_Socket and the load, the grounding module GND is grounded, the input filter capacitor C1 is connected to the power input pin, the output filter capacitor C2 is connected to the power output pin, and the pull-down resistor R is connected to the enable pin EN.

[0028] The working principle of this embodiment is:

[0029] When the MCU receives the low power mode signal LpMode sent by the control system, it first determines the level state of the low power mode signal LpMode. When it detects that the level of the low power mode signal LpMode is high, it outputs a low level signal to the enable pin EN of the slow start circuit through the signal output pin. At this time, the output voltage of the slow start circuit is 0V, and the power supply of the subsequent load is directly turned off.

[0030] When the MCU detects that the level of the low power mode signal LpMode is low, it outputs a high level signal to the enable pin EN of the slow start circuit through the signal output pin. At this time, the output voltage of the slow start circuit is 3.3V, which directly turns on the power supply of the subsequent load.

[0031] Among them, the power supply module VCC_Socket is a 3.3V voltage provided by an external power supply or a single board; C1 and C2 are the input filter capacitor and output filter capacitor of the slow start circuit respectively; R is the pull-down resistor of the EN pin of the slow start circuit, which prevents the slow start circuit from outputting 3.3V when the MCU has not given the enable pin EN a high level, turning on the subsequent load circuit, causing abnormal power-on of the load.

[0032] Example 2

[0033] like Figure 2 As shown, a control circuit of a low power consumption mode of an optical module includes a gold finger, an MCU, a slow start circuit, a power supply module and a load, wherein:

[0034] The gold finger includes a power connection terminal connected to the power supply module and a signal output terminal for outputting a low power consumption mode signal.

[0035] The MCU includes a power input terminal, a signal input pin and a signal output pin. The power input terminal is connected to the power supply module. The signal input pin is connected to the signal output terminal to receive the low power mode signal output by the gold finger. The signal output pin is used to output a high / low level signal according to the level state of the low power mode signal.

[0036] The slow start circuit includes a slow start chip, which includes an enable pin, a power input pin, a power output pin and a ground pin. The enable pin is connected to the signal output pin for receiving a high / low level signal. The power input pin and the power output pin are respectively connected to the power supply module and the load, and control the shutdown / start of the load power supply according to the high / low level signal.

[0037] Specifically, when the MCU receives the low-power mode signal output by the gold finger through the signal input pin, the MCU first detects the level state of the low-power mode signal, and then outputs a high / low level signal to the enable pin according to the level state of the low-power mode signal. Then, the slow-start chip outputs 0V / 3.3V voltage to the load according to the high / low level signal, thereby controlling the shutdown / on of the load power supply and realizing low-power control of the optical module.

[0038] According to the preferred implementation of this embodiment, the slow start circuit further includes an input filter capacitor, an output filter capacitor and a pull-down resistor. Among them, one end of the input filter capacitor is grounded, and the other end is connected to the power input pin; one end of the output filter capacitor is grounded, and the other end is connected to the power output pin; one end of the pull-down resistor is grounded, and the other end is connected to the enable pin.

[0039] Specifically, Figure 2 As shown, the power input end of the MCU is connected to the power supply module VCC_Socket, the signal input pin of the MCU is used for the low power mode signal LpMode output by the gold finger, the signal output pin of the MCU is connected to the enable pin EN of the slow start chip, and is used to output a level signal to the enable pin EN, the power input pin IN and the power output pin OUT of the slow start chip are respectively connected to the power supply module VCC_Socket and the load, the grounding module GND is grounded, the input filter capacitor C1 is connected to the power input pin, the output filter capacitor C2 is connected to the power output pin, and the pull-down resistor R is connected to the enable pin EN.

[0040] The working principle of this embodiment is:

[0041] When the MCU receives the low power mode signal LpMode sent by the gold finger, it first determines the level state of the low power mode signal LpMode. When it detects that the level of the low power mode signal LpMode is high, it outputs a low level signal to the enable pin EN of the slow start circuit through the signal output pin. At this time, the output voltage of the slow start circuit is 0V, and the power supply of the subsequent load is directly turned off.

[0042] When the MCU detects that the level of the low power mode signal LpMode is low, it outputs a high level signal to the enable pin EN of the slow start circuit through the signal output pin. At this time, the output voltage of the slow start circuit is 3.3V, which directly turns on the power supply of the subsequent load.

[0043] Finally, the applicant also verified the control circuit of the utility model and the mode of achieving low power consumption through software described in the background technology. Taking the 50G ONU optical module as an example, under the same conditions, the test results of the two are as follows:

[0044]

[0045] From the above test results, it can be seen that the utility model directly controls the enable pin of the soft start circuit by MCU to turn off and on the load circuit. The control method is simple, and the response is fast, the time is short, the power consumption is low, and the reliability is good. It not only reduces the time cost of the code, but also improves the response speed of the hardware, and at the same time the power consumption is lower, achieving the effect of energy saving and emission reduction.

[0046] The above description is only a specific implementation method of the present utility model. Any feature disclosed in this specification, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes; all disclosed features, or all methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any way.

Claims

1. A control circuit for a low power consumption mode of an optical module, characterized in that: The invention comprises an MCU, a slow-start circuit, a power supply module and a load, wherein the MCU comprises a power input terminal connected to the power supply module, a signal input pin for receiving a low-power mode signal and a signal output pin for outputting a level signal, the slow-start circuit comprises a slow-start chip, the slow-start chip comprises an enable pin, a power input pin and a power output pin, the enable pin is connected to the signal output pin, the power input pin and the power output pin are respectively connected to the power supply module and the load; when the MCU receives the low-power mode signal, the MCU outputs a high / low level signal to the enable pin according to the level state of the low-power mode signal, and the slow-start chip controls the off / on of the load power supply according to the high / low level signal.

2. A control circuit for a low power consumption mode of an optical module, characterized in that: It includes gold finger, MCU, soft start circuit, power supply module and load, among which, The gold finger includes a power connection terminal connected to the power supply module and a signal output terminal for outputting a low power consumption mode signal; The MCU includes a power input terminal, a signal input pin and a signal output pin, the power input terminal is connected to the power supply module, the signal input pin is connected to the signal output terminal for receiving a low power mode signal, and the signal output pin is used to output a high / low level signal according to the level state of the low power mode signal; The slow start circuit includes a slow start chip, which includes an enable pin, a power input pin and a power output pin. The enable pin is connected to the signal output pin for receiving a high / low level signal. The power input pin and the power output pin are respectively connected to the power supply module and the load, and control the load power supply to be turned off / on according to the high / low level signal.

3. A control circuit for a low power consumption mode of an optical module according to claim 1 or 2, characterized in that: The slow start circuit also includes an input filter capacitor, an output filter capacitor and a pull-down resistor. One end of the input filter capacitor is grounded, and the other end is connected to a power input pin; one end of the output filter capacitor is grounded, and the other end is connected to a power output pin; one end of the pull-down resistor is grounded, and the other end is connected to an enable pin.

4. A control circuit for a low power consumption mode of an optical module according to claim 1 or 2, characterized in that: The soft start chip also includes a ground pin.

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