High-speed optical module voltage following control system

Abstract

The invention provides a voltage following control system for a high-speed optical module. The system comprises a power conversion unit, an optical module core electric chip, a voltage sampling unit and a micro-control processor, the power supply conversion unit converts input voltage into required voltage and inputs the required voltage into the optical module core electric chip; the voltage sampling unit is used for sampling the working voltage of the optical module core electric chip to obtain a sampling voltage; the micro-control processor comprises an analog-to-digital converter and a PID algorithm processing unit, and the analog-to-digital converter is used for acquiring a sampling voltage and converting the sampling voltage into an input feedback signal; the PID algorithm processing unit generates a voltage following adjustment signal according to the input feedback signal and transmits the voltage following adjustment signal to the power conversion unit; and the voltage following adjustment signal is used for controlling the power supply conversion unit to adjust the magnitude of the required voltage to the rated working voltage of the optical module core electric chip. Therefore, the voltage of the power supply conversion unit can be adjusted in real time in different working environments, and the power supply voltage precision requirement of the core electric chip of the optical module can be met.

Description

Technical Field

[0001] The present invention relates to the field of optical communication technology, and in particular to a high-speed optical module voltage following control system. Background Art

[0002] In recent years, generative AI big data platform models have become popular one after another, causing a surge in demand for AI computing power. Higher-definition, larger-capacity, more refined AI-generated videos and the resulting more interactive data require optical modules to have higher transmission rates and higher transmission density. Therefore, high-speed optical modules such as 400G, 800G, and 1.6T, which have the advantages of high-speed transmission, high density, and low power consumption, have become essential key components in the construction of AI data centers. As the transmission rate and density of optical modules become higher and higher, their overall power consumption is also increasing, and the operating current is also increasing. In order to reduce power consumption, the operating voltage of the core electrical chip used in the optical module is also getting lower and lower, and its requirements for working voltage stability are getting higher and higher.

[0003] However, the existing high-speed optical module power supply design basically uses a DC-DC switching power supply with adjustable voltage through resistor divider feedback, or uses a PMIC (Power Management Integrated Circuits) chip with I2C (Inter-Integrated Circuit) adjustable voltage for direct power supply, without a power supply voltage following control function. Summary of the invention

[0004] The present invention provides a high-speed optical module voltage following control system, which is used to solve the defects in the prior art that the existing high-speed optical module power supply design basically uses a DC-DC switching power supply with adjustable voltage through resistor voltage division feedback, or uses a PMIC chip with I2C adjustable voltage for direct power supply, and has no power supply voltage following control function.

[0005] The present invention provides a high-speed optical module voltage following control system, including a power conversion unit, an optical module core electric chip, a voltage sampling unit and a microcontroller processor; The power conversion unit converts the input voltage to the required voltage and then inputs it to the core electric chip of the optical module; The voltage sampling unit samples the working voltage of the core electric chip of the optical module to obtain a sampled voltage; The microcontroller comprises an analog-to-digital converter and a PID algorithm processing unit, wherein the analog-to-digital converter is used to obtain the sampled voltage and convert the sampled voltage into an input feedback signal; The PID algorithm processing unit generates a voltage following adjustment signal to the power conversion unit according to the input feedback signal; The voltage follower adjustment signal is used to control the power conversion unit to adjust the magnitude of the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0006] According to a high-speed optical module voltage following control system provided by the present invention, the power conversion unit is a PMIC power conversion unit; Accordingly, the microcontroller further comprises a first I2C interface; The first I2C interface inputs the voltage following adjustment signal generated by the PID algorithm processing unit to the PMIC power conversion unit.

[0007] According to a high-speed optical module voltage following control system provided by the present invention, the PMIC power conversion unit includes a first voltage regulating unit and a second I2C interface; The second I2C interface inputs the voltage following adjustment signal to the first voltage regulating unit; The first voltage regulating unit adjusts the magnitude of the required voltage to the rated operating voltage of the core electrical chip of the optical module according to the voltage following adjustment signal.

[0008] According to a high-speed optical module voltage following control system provided by the present invention, the PMIC power conversion unit also includes a voltage output interface; The voltage output interface outputs the required voltage.

[0009] According to a high-speed optical module voltage following control system provided by the present invention, the power conversion unit is a DC-DC power conversion unit; Correspondingly, the microcontroller processor further includes a digital-to-analog converter, and the high-speed optical module voltage following control system further includes a second voltage regulating unit; The digital-to-analog converter converts the voltage following adjustment signal into an analog voltage adjustment signal, and inputs the analog voltage adjustment signal into the second voltage adjustment unit; After the second voltage regulating unit converts the analog voltage adjustment signal into a feedback voltage signal, it is input into the feedback interface of the DC-DC power conversion unit to adjust the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0010] According to a high-speed optical module voltage following control system provided by the present invention, the feedback interface is used to receive the feedback voltage signal.

[0011] According to a high-speed optical module voltage following control system provided by the present invention, the DC-DC power supply conversion unit converts the input voltage to the required voltage by adjusting the feedback resistance ratio.

[0012] According to a high-speed optical module voltage following control system provided by the present invention, the DC-DC power conversion unit also includes a voltage output interface; The voltage output interface outputs the required voltage.

[0013] According to a high-speed optical module voltage following control system provided by the present invention, the PID algorithm processing unit calculates the deviation between the input feedback signal and the rated operating voltage, and outputs the voltage following adjustment signal to the power conversion unit based on the deviation, the historical change of the deviation and the rate of change of the deviation.

[0014] According to a high-speed optical module voltage following control system provided by the present invention, the voltage sampling unit samples the operating voltage through the power pad of the optical module core electrical chip to obtain the sampled voltage.

[0015] The high-speed optical module voltage following control system provided by the present invention comprises a power conversion unit, an optical module core electric chip, a voltage sampling unit and a microcontroller; the power conversion unit converts the input voltage to the required voltage and then inputs it to the optical module core electric chip; the voltage sampling unit samples the working voltage of the optical module core electric chip to obtain the sampled voltage; the microcontroller comprises an analog-to-digital converter and a PID algorithm processing unit, the analog-to-digital converter is used to obtain the sampled voltage and convert the sampled voltage into an input feedback signal; the PID algorithm processing unit generates a voltage following adjustment signal to the power conversion unit according to the input feedback signal; the voltage following adjustment signal is used to control the power conversion unit to adjust the required voltage to the rated working voltage of the optical module core electric chip. Thus, the voltage of the power conversion unit is adjusted in real time under different working environments to meet the power supply voltage accuracy requirements of the optical module core electric chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the DC-DC power supply with adjustable voltage through resistance feedback provided by the present invention.

[0018] Figure 2 It is a schematic diagram of the PMIC power supply provided by the present invention.

[0019] Figure 3 It is a schematic diagram of a high-speed optical module voltage following control system provided by the present invention.

[0020] Figure 4 It is a schematic diagram of the PMIC power supply with voltage following function provided by the present invention.

[0021] Figure 5 It is a schematic diagram of the resistor feedback adjustable DC-DC power supply with voltage following function provided by the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The terms "first", "second", etc. in the present invention are used to distinguish similar objects, rather than to describe a specific order or precedence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type.

[0024] In the related technology, the original solutions are mainly divided into two solutions: Figure 1 Schematic diagram of a DC-DC (Direct Current to Direct Current) power supply with adjustable voltage through resistor feedback provided by the present invention, such as Figure 1 As shown in the figure, the scheme 1 is a model of a DC-DC switching power supply with adjustable voltage through resistor voltage divider feedback. The whole system includes a power conversion unit, a voltage feedback adjustment resistor, and an optical module core chip. The power conversion chip converts the 3.3V power input to the optical module into the voltage required by the core chip (such as 1.05V, 0.65V, etc.). The voltage change is mainly achieved by adjusting the ratio of the voltage feedback resistor. After the power supply voltage is adjusted, the output is fixed, and the power supply voltage of the core chip cannot be detected, and the voltage drop compensation of the power transmission path cannot be performed.

[0025] Figure 2 Schematic diagram of the PMIC power supply provided by the present invention, such as Figure 2As shown, Solution 2 is a PMIC chip solution power supply model with I2C adjustable voltage. The entire system includes a PMIC chip, a microcontroller processing unit, and an optical module core electronic chip. The power conversion chip converts the 3.3V power input to the optical module into the voltage required by the core electronic chip (such as 1.05V, 0.65V, etc.). The voltage change is mainly achieved by the microcontroller processor using I2C to change the register value inside the PMIC chip. The voltage output is fixed and the core electronic chip power supply voltage cannot be detected, and the voltage drop compensation of the power transmission path cannot be performed.

[0026] Based on the above problems, the present invention provides a high-speed optical module voltage following control system. Figure 3 Schematic diagram of the high-speed optical module voltage following control system provided by the present invention, such as Figure 3 As shown, the high-speed optical module voltage following control system includes a power conversion unit, an optical module core electrical chip, a voltage sampling unit and a microcontroller processor; The power conversion unit converts the input voltage to the required voltage and then inputs it to the core electric chip of the optical module; The voltage sampling unit samples the working voltage of the core electric chip of the optical module to obtain a sampled voltage; The microcontroller comprises an analog-to-digital converter and a PID algorithm processing unit, wherein the analog-to-digital converter is used to obtain the sampled voltage and convert the sampled voltage into an input feedback signal; The PID algorithm processing unit generates a voltage following adjustment signal to the power conversion unit according to the input feedback signal; The voltage follower adjustment signal is used to control the power conversion unit to adjust the magnitude of the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0027] Specifically, the high-speed optical module voltage follower control system includes a power conversion unit, an optical module core electrical chip, a voltage sampling unit and a microcontroller processor.

[0028] The power conversion unit converts the input voltage to the required voltage and then inputs it to the core electronic chip of the optical module. The power conversion unit is a key component in an electronic device, which is responsible for converting the input voltage into a stable voltage required by the internal circuit of the device. Here, the power conversion unit can be a PMIC power conversion unit or a DC-DC power conversion unit, which is not specifically limited in the embodiment of the present invention.

[0029] Input voltage refers to the initial voltage value provided by the power supply to the circuit or device in the circuit. Here, demand voltage refers to the voltage value required in a specific circuit or device in order for it to work properly or achieve the expected performance.

[0030] The voltage sampling unit samples the working voltage of the core electrical chip of the optical module to obtain a sampled voltage. It is understandable that the sampled voltage can be used to monitor the working state of the core electrical chip of the optical module in real time.

[0031] The microcontroller includes an analog-to-digital converter (ADC) and a PID algorithm processing unit. The ADC is used to obtain a sampled voltage and convert the sampled voltage into an input feedback signal. The ADC is a device that converts a continuously changing analog signal into a discrete digital signal. Therefore, the input feedback signal here is a digital signal.

[0032] The PID algorithm processing unit calculates the deviation between the input feedback signal and the rated operating voltage, and outputs a voltage following adjustment signal to the power conversion unit based on the deviation, the historical change of the deviation and the change rate of the deviation.

[0033] Here, the PID algorithm processing unit combines three links: proportional (P), integral (I) and differential (D). The proportional link responds to the current deviation; the integral link considers the historical changes of the deviation to eliminate static errors; the differential link predicts the future changes of the deviation to achieve advanced regulation.

[0034] Based on the calculation result of the PID algorithm, the PID algorithm processing unit will output a voltage following adjustment signal, which is sent to the power conversion unit to adjust the output voltage of the power supply to make it closer to the rated working voltage.

[0035] That is, the voltage follows the adjustment signal to control the power conversion unit to adjust the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0036] It should be noted that, through the voltage following adjustment signal, the power conversion unit can respond to the needs of the core electronic chip of the optical module in real time and adjust the required voltage to the rated operating voltage of the core electronic chip of the optical module. On the one hand, this real-time adjustment mechanism helps to reduce voltage fluctuations and improve voltage stability, thereby ensuring the stable operation of the core electronic chip of the optical module. On the other hand, the performance of the optical module can be optimized, and the performance of the core electronic chip of the optical module depends to a large extent on the stability of its operating voltage.

[0037] It is understandable that, when the power conversion unit is a PMIC power conversion unit, the microcontroller processor should also include a digital-to-analog converter (DAC), which is an electronic device or circuit whose main function is to convert a digital signal into a corresponding analog signal.

[0038] The system provided by the embodiment of the present invention includes a power conversion unit, an optical module core electric chip, a voltage sampling unit and a microcontroller; the power conversion unit converts the input voltage to the required voltage and then inputs it to the optical module core electric chip; the voltage sampling unit samples the working voltage of the optical module core electric chip to obtain the sampled voltage; the microcontroller includes an analog-to-digital converter and a PID algorithm processing unit, the analog-to-digital converter is used to obtain the sampled voltage and convert the sampled voltage into an input feedback signal; the PID algorithm processing unit generates a voltage following adjustment signal to the power conversion unit according to the input feedback signal; the voltage following adjustment signal is used to control the power conversion unit to adjust the required voltage to the rated working voltage of the optical module core electric chip. In this way, the voltage of the power conversion unit can be adjusted in real time under different working environments to meet the power supply voltage accuracy requirements of the optical module core electric chip.

[0039] The system provided by the embodiment of the present invention 1) adopts a control system with a voltage following function to solve the problem that the chip power supply does not meet the design requirements due to the voltage drop change under the high current power supply of the optical module, and improves the stability and reliability of the voltage power supply of the optical module; 2) The high-speed optical module voltage following control system provided by the embodiment of the present invention can be applied to most power supply solutions on the market, is easy to modify, and has strong adaptability; 3) The system provided by the embodiment of the present invention uses low-cost components or existing components in the optical module, and has low use cost.

[0040] In the related technology, the two existing core power chip power supply methods belong to direct power supply. Among them, the DC-DC switching power supply with adjustable voltage through resistor voltage divider feedback has the advantage of low cost, but the voltage regulation is not flexible, and the hardware configuration needs to be changed to achieve power output voltage regulation. The PMIC chip with I2C adjustable voltage can adjust the power supply voltage by modifying the internal register of PMIC through I2C. Its cost is relatively high, but the voltage regulation is more flexible. However, neither of these two methods has the function of real-time voltage follow-up adjustment. The voltage output by the power supply is a fixed value. Its output voltage is a fixed value at room temperature after compensation after considering the resistor voltage divider on the power transmission path on the PCB (Printed Circuit Board). When the module works at different ambient temperatures, the current of the core chip will change with the temperature, and the resistance on the power transmission path will also change, resulting in a change in the voltage drop on the power transmission path. The voltage transmitted to the core chip does not meet its specification requirements, affecting the module performance and reliability.

[0041] Based on the above embodiments, Figure 4 Schematic diagram of the PMIC power supply with voltage following function provided by the present invention, such as Figure 4 As shown, the power conversion unit is a PMIC power conversion unit; Accordingly, the microcontroller further comprises a first I2C interface; The first I2C interface inputs the voltage following adjustment signal generated by the PID algorithm processing unit to the PMIC power conversion unit.

[0042] Specifically, the power conversion unit is a PMIC power conversion unit. Accordingly, the microcontroller processor also includes an I2C interface.

[0043] The first I2C interface inputs the voltage following adjustment signal generated by the PID algorithm processing unit to the PMIC power conversion unit.

[0044] The I2C interface is a widely used serial communication protocol. The I2C interface supports bidirectional communication, that is, the master device can send data to the slave device, and the slave device can also send data to the master device. This communication method makes the I2C interface very flexible when connecting microcontroller processors and other peripheral devices (such as sensors, memory, displays, etc.).

[0045] Each device connected to the I2C bus has a unique address, which enables the master to accurately communicate with a specific slave device.

[0046] Based on the above embodiment, the PMIC power conversion unit includes a first voltage regulation unit and a second I2C interface; The second I2C interface inputs the voltage following adjustment signal to the first voltage regulating unit; The first voltage regulating unit adjusts the required voltage to the rated working voltage of the core electrical chip of the optical module according to the voltage following adjustment signal.

[0047] The voltage following adjustment signal is an analog signal, which reflects the voltage change required by the core electrical chip of the optical module. The voltage following adjustment signal is used to instruct the first voltage regulating unit on how to adjust the required voltage to meet the working requirements of the core electrical chip of the optical module.

[0048] Based on the above embodiment, the PMIC power conversion unit further includes a voltage output interface, where the voltage output interface outputs the required voltage.

[0049] It should be noted that the embodiment of the present invention adds a voltage sampling unit, a PID algorithm processing unit part in the microcontroller, an ADC (analog-to-digital converter) part and a DAC (digital-to-analog converter) part in the microcontroller for scheme 2. Use I2C to set the optical module PMIC power conversion unit to convert the 3.3V voltage of the input module to a voltage close to the voltage required by the core electronic chip of the optical module. Then, by configuring the PID rated working voltage (the voltage required by the core electronic chip of the optical module) to the optical module microprocessor, the microcontroller collects the voltage on the power pin of the core electronic chip through the ADC as the input feedback signal of the PID algorithm, and calculates the PMIC setting value that needs to be adjusted through the PID algorithm to correct the ADC sampling voltage to the rated working voltage value. After repeated PID operation correction, it finally reaches a stable state and stabilizes the voltage to the rated working voltage.

[0050] Based on the above embodiments, Figure 5 Schematic diagram of a resistor feedback adjustable DC-DC power supply with voltage following function provided by the present invention, such as Figure 5 As shown, the power conversion unit is a DC-DC power conversion unit; Correspondingly, the microcontroller processor further includes a digital-to-analog converter, and the high-speed optical module voltage following control system further includes a second voltage regulating unit; The digital-to-analog converter converts the voltage following adjustment signal into an analog voltage adjustment signal, and inputs the analog voltage adjustment signal into the second voltage adjustment unit; After the second voltage regulating unit converts the analog voltage adjustment signal into a feedback voltage signal, it is input into the feedback interface of the DC-DC power conversion unit to adjust the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0051] Specifically, when the power conversion unit is a DC-DC power conversion unit, correspondingly, the microcontroller processor further includes a digital-to-analog converter, and the high-speed optical module voltage following control system further includes a second voltage regulating unit.

[0052] The digital-to-analog converter converts the voltage follower adjustment signal into an analog voltage adjustment signal, and inputs the analog voltage adjustment signal into the second voltage adjustment unit.

[0053] The basic principle of a digital-to-analog converter is to convert the input digital signal, usually binary code, into a continuous analog signal through certain circuits and algorithms. In this process, each bit of the digital signal corresponds to a certain amplitude or phase change in the analog signal.

[0054] The digital-to-analog converter mainly consists of the following parts: Digital register: used to store input digital signals.

[0055] Analog electronic switch: controls the output of an analog signal based on a signal in a digital register.

[0056] Bit weight network: generates corresponding current or voltage value according to the bit weight of digital signal.

[0057] Power amplifier: amplifies the generated analog signal.

[0058] Reference voltage source: provides a stable reference voltage for the entire conversion process.

[0059] The second voltage regulating unit converts the analog voltage adjustment signal into a feedback voltage signal, and inputs the signal into the feedback interface of the DC-DC power conversion unit to adjust the required voltage to the rated operating voltage of the core electrical chip of the optical module.

[0060] The feedback interface is used to receive the feedback voltage signal. The feedback interface here can be an FB feedback interface. The FB feedback interface is a special interface used to feed back the output signal (such as voltage, current, etc.) of the system or device to the input end or control circuit in some way (such as a voltage divider resistor) to achieve closed-loop control of the system or device.

[0061] Based on the above embodiment, the DC-DC power conversion unit converts the input voltage to the required voltage by adjusting the feedback resistor ratio.

[0062] Specifically, the DC-DC power conversion unit converts the input voltage to the required voltage by adjusting the feedback resistor ratio.

[0063] It can be understood that by accurately adjusting the ratio of the feedback resistor, accurate control of the required voltage can be achieved.

[0064] Here, the DC-DC power conversion unit further includes a voltage output interface, and the voltage output interface outputs the required voltage.

[0065] Specifically, the embodiment of the present invention adds an external voltage regulation unit, a voltage acquisition unit, and a microcontroller processor to scheme one. The microcontroller processor includes an ADC (analog-to-digital converter), a DAC (digital-to-analog converter), and a PID algorithm processing unit. The optical module power conversion unit converts the 3.3 voltage of the input module to a voltage close to the voltage required by the core electrical chip of the optical module (achieved by adjusting the feedback resistor ratio). Then, by configuring the PID target power supply voltage (the voltage required by the core electrical chip of the optical module) to the optical module microprocessor, the microcontroller collects the voltage on the power pin of the core electrical chip through the ADC as the input feedback signal of the PID algorithm, and calculates the DAC value through the PID algorithm to correct the ADC sampling voltage to the rated working voltage value. After repeated PID operation correction, it finally reaches a stable state and stabilizes the voltage to the rated working voltage.

[0066] Based on the above embodiment, the voltage sampling unit samples the operating voltage through the power pad of the core electrical chip of the optical module to obtain the sampled voltage.

[0067] Specifically, the voltage sampling unit samples the operating voltage through the power pad of the core electrical chip of the optical module to obtain a sampled voltage.

[0068] The power pad serves as the connection point between the electronic chip and the external power supply, and is responsible for transmitting electrical energy from the circuit board to the inside of the electronic chip to support the normal operation of the electronic chip.

[0069] In the core electrical chip of the optical module, the electrical chip needs to process optical signals, manage electrical energy, and realize data transmission, while the power pad provides the necessary electrical energy support.

[0070] The system provided by the embodiment of the present invention is implemented by adding a power feedback control system to the power supply part of the optical module, so that the power supply can be adjusted in real time under different working environments to meet the power supply voltage accuracy requirements of the core electronic chip of the optical module, thereby solving the problem of unstable power supply of the core electronic chip caused by the voltage drop of the high-current power supply transmission path of the high-speed optical module. This method can be modified with the existing DC-DC power supply solution with adjustable voltage through resistor feedback, and can also be used for the modification of the PMIC power supply solution. This technical solution can be used for high-speed optical modules, and can also be extended to other optical modules with such speed requirements.

[0071] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0072] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-speed optical module voltage following control system, characterized in that: It includes a power conversion unit, an optical module core electric chip, a voltage sampling unit and a microcontroller processor; The power conversion unit converts the input voltage to the required voltage and then inputs it to the core electric chip of the optical module; The voltage sampling unit samples the working voltage of the core electric chip of the optical module to obtain a sampled voltage; The microcontroller comprises an analog-to-digital converter and a PID algorithm processing unit, wherein the analog-to-digital converter is used to obtain the sampled voltage and convert the sampled voltage into an input feedback signal; The PID algorithm processing unit generates a voltage following adjustment signal to the power conversion unit according to the input feedback signal; The voltage follower adjustment signal is used to control the power conversion unit to adjust the magnitude of the required voltage to the rated operating voltage of the core electrical chip of the optical module.

2. The high-speed optical module voltage following control system according to claim 1, characterized in that: The power conversion unit is a PMIC power conversion unit; Accordingly, the microcontroller further comprises a first I2C interface; The first I2C interface inputs the voltage following adjustment signal generated by the PID algorithm processing unit to the PMIC power conversion unit.

3. The high-speed optical module voltage following control system according to claim 2, characterized in that: The PMIC power conversion unit includes a first voltage regulation unit and a second I2C interface; The second I2C interface inputs the voltage following adjustment signal to the first voltage regulating unit; The first voltage regulating unit adjusts the magnitude of the required voltage to the rated operating voltage of the core electrical chip of the optical module according to the voltage following adjustment signal.

4. The high-speed optical module voltage following control system according to claim 3, characterized in that: The PMIC power conversion unit also includes a voltage output interface; The voltage output interface outputs the required voltage.

5. The high-speed optical module voltage following control system according to claim 1, characterized in that: The power conversion unit is a DC-DC power conversion unit; Correspondingly, the microcontroller processor further includes a digital-to-analog converter, and the high-speed optical module voltage following control system further includes a second voltage regulating unit; The digital-to-analog converter converts the voltage following adjustment signal into an analog voltage adjustment signal, and inputs the analog voltage adjustment signal into the second voltage adjustment unit; After the second voltage regulating unit converts the analog voltage adjustment signal into a feedback voltage signal, it is input into the feedback interface of the DC-DC power conversion unit to adjust the required voltage to the rated operating voltage of the core electrical chip of the optical module.

6. The high-speed optical module voltage following control system according to claim 5, characterized in that: The feedback interface is used to receive the feedback voltage signal.

7. The high-speed optical module voltage following control system according to claim 6, characterized in that: The DC-DC power conversion unit converts the input voltage to the required voltage by adjusting the feedback resistor ratio.

8. The high-speed optical module voltage following control system according to claim 6, characterized in that: The DC-DC power conversion unit also includes a voltage output interface; The voltage output interface outputs the required voltage.

9. The high-speed optical module voltage following control system according to any one of claims 1 to 8, characterized in that: The PID algorithm processing unit calculates the deviation between the input feedback signal and the rated operating voltage, and outputs the voltage following adjustment signal to the power conversion unit based on the deviation, the historical change of the deviation and the change rate of the deviation.

10. The high-speed optical module voltage following control system according to any one of claims 1 to 8, characterized in that: The voltage sampling unit samples the operating voltage through the power pad of the core electrical chip of the optical module to obtain the sampled voltage.

Images