A power supply control device and method

Abstract

The application provides a power supply control device and method, and relates to the technical field of optical communication.The power supply control device comprises a parameter acquisition module, a main control module and a power supply module.The parameter acquisition module is used for acquiring the working parameters of the current-mode digital-to-analog converter in real time, and the working parameters include temperature parameters, current parameters and voltage parameters.The main control module is used for sending control instructions to the power supply module and the current-mode digital-to-analog converter based on the temperature parameters, the current parameters and the voltage parameters, and adjusting the power supply voltage and the output current of the current-mode digital-to-analog converter respectively, so as to improve the efficiency of the current-mode digital-to-analog converter.Based on this, the working power consumption of the current-mode digital-to-analog converter can be significantly reduced under the premise of ensuring the driving precision.

Description

Technical Field

[0001] This invention relates to the field of optical communication technology, and more specifically, to a power supply control device and method. Background Technology

[0002] With the rapid development of optical communication technology, high-speed optical modules are increasingly widely used in data centers, 5G networks, and other fields. Optical modules are evolving towards higher speeds, lower power consumption, and higher density, with power consumption becoming one of the key factors restricting their development. Among the various components of an optical module, the power consumption of the laser driver circuit is particularly prominent, and the power consumption performance of the current-mode digital-analog converter (IDAC), as the core current output stage driving the laser, directly affects the overall energy efficiency of the module.

[0003] To meet the requirements of noise suppression and output accuracy of current sources, traditional current-source digital-to-analog converter (DAC) designs primarily focus on basic current output functionality, typically employing a fixed bias current operating mode. However, this design has two main drawbacks: firstly, due to the lack of a real-time monitoring mechanism for the output current, it is impossible to dynamically adjust the output of the current-source DAC; secondly, it cannot optimize the operating point of the current-source DAC based on changes in operating conditions, resulting in it never reaching its optimal efficiency state. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a power supply control device and method that can significantly reduce the operating power consumption of a current-mode digital-to-analog converter while ensuring driving accuracy.

[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present invention are as follows: In a first aspect, this application provides a power supply control device applied to an optoelectronic system. The optoelectronic system includes at least a current-mode digital-to-analog converter (D / A converter). The output terminal of the current-mode D / A converter is connected to the power supply terminal of the load. The power supply control device includes: a parameter acquisition module, a main control module, and a power supply module. The acquisition terminal of the main control module is connected to the output terminal of the parameter acquisition module, and the output terminal of the main control module is connected to the control terminal of the power supply module and the control terminal of the current-mode D / A converter. The output terminal of the power supply module is connected to the power supply terminal of the current-mode D / A converter. The parameter acquisition module is used to acquire the operating parameters of the current-type digital-to-analog converter in real time, including temperature, current and voltage parameters. The main control module is used to send control commands to the power supply module and the current-mode digital-to-analog converter based on temperature, current and voltage parameters, so as to adjust the power supply voltage and output current of the current-mode digital-to-analog converter to improve the efficiency of the current-mode digital-to-analog converter.

[0006] Optionally, the main control module is used to determine the target output current of the current-mode digital-to-analog converter based on temperature parameters; The main control module is also used to determine the output current deviation based on the current parameters and the target output current; The main control module is also used to adjust the supply voltage based on the output current deviation to obtain the target supply voltage of the current-mode digital-to-analog converter, wherein the supply voltage is greater than the high potential terminal voltage of the load.

[0007] Optionally, the main control module is also used to select an initial output current value that matches the temperature parameters from a preset temperature-current calibration library; The main control module is also used to determine the temperature change of the environment in which the current-type digital-to-analog converter is located based on the initial ambient temperature and temperature parameters. The main control module is also used to determine whether the temperature change is lower than a preset threshold. If so, the initial output current value is updated using a linear incremental method; otherwise, the initial output current value is used as the final target output current.

[0008] Optionally, the main control module is also used to calculate the initial output current value based on the upper and lower limits of the calibration temperature range using the linear difference method when the temperature parameter is within any calibration temperature range; wherein the upper and lower limits of the calibration temperature range are two adjacent calibration temperature points.

[0009] Optionally, the main control module is also used to calculate the current weighted value using a preset temperature-current coefficient and the temperature change when the temperature change is lower than a preset threshold. The main control module is also used to update the initial output current value based on the current weighted value to obtain the target output current.

[0010] Optionally, the main control module is also used to determine whether the output current deviation is less than the first preset error threshold. If so, the supply voltage is increased according to the preset voltage adjustment step to obtain the target supply voltage. The main control module is also used to determine whether the output current deviation is less than the second preset error threshold when the output current deviation is greater than the first preset error threshold. If it is, the supply voltage is used as the target supply voltage; if not, the supply voltage is reduced in a preset voltage adjustment step to obtain the target supply voltage.

[0011] Optionally, the main control module is also used to update the power supply voltage based on a preset voltage adjustment step when it is determined that the output current deviation is less than a first preset error threshold, to obtain an initial target power supply voltage, and to use the initial target power supply voltage as the new power supply voltage, and return to execute the steps based on the preset voltage adjustment step until the number of iterations meets the preset threshold, and output the final target power supply voltage. Optionally, the main control module is also used to determine whether the final target power supply voltage is within a preset error range. If not, it is determined that the power supply control device is in an abnormal critical state. The preset error range is determined by a first preset error threshold and a second preset error threshold.

[0012] Optionally, when the operating parameters include current parameters and voltage parameters, the parameter acquisition module includes at least one operating condition acquisition unit. The operating condition acquisition unit includes a sensing component and a differential operational amplifier component. The sensing component is connected to the output terminal of the current-type digital-to-analog converter and the input terminal of the differential operational amplifier component. The output terminal of the differential operational amplifier component is connected to the acquisition terminal of the main control module.

[0013] Secondly, this application also provides a power supply control method, applied to the power supply control device of any one of the first aspects above, the power supply control method comprising: The operating parameters of the current-type digital-to-analog converter are acquired in real time using the parameter acquisition module. These operating parameters include temperature, current, and voltage parameters. The main control module sends control commands to the power supply module and the current-mode digital-to-analog converter based on temperature, current, and voltage parameters, thereby adjusting the power supply voltage and output current of the current-mode digital-to-analog converter to improve its efficiency.

[0014] The power supply control device and method provided by this invention have the following beneficial effects: The power supply control device includes a parameter acquisition module, a main control module, and a power supply module. The acquisition terminal of the main control module is connected to the output terminal of the parameter acquisition module, and the output terminal of the main control module is connected to the control terminal of the power supply module; the output terminal of the power supply module is connected to the power supply terminal of the current-mode digital-to-analog converter (D / A converter). The parameter acquisition module acquires the operating parameters of the current-mode D / A converter in real time, including temperature, current, and voltage parameters. The main control module sends control commands to the power supply module and the current-mode D / A converter based on the temperature, current, and voltage parameters, adjusting the supply voltage and output current of the current-mode D / A converter to improve its efficiency. Based on this, this application can significantly reduce the power consumption of the current-mode D / A converter while ensuring drive accuracy.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 One of the structural schematic diagrams of the power supply control device provided in the embodiment of the present invention is shown; Figure 2 A schematic diagram of the parameter acquisition module provided in an embodiment of the present invention is shown; Figure 3 One of the circuit schematic diagrams of the power supply control device provided in the embodiment of the present invention is shown; Figure 4 A second circuit diagram of the power supply control device provided in an embodiment of the present invention is shown; Figure 5 A second schematic diagram of the power supply control device provided in an embodiment of the present invention is shown; Figure 6 A flowchart illustrating the steps of the power supply control method provided in an embodiment of the present invention is shown. Figure 7 A block diagram of a server provided in an embodiment of the present invention is shown.

[0018] Icons: 10-Optoelectronic System; 11-Current-type Digital-to-Analog Converter; 20-Power Supply Control Device; 21-Parameter Acquisition Module; 22-Main Control Module; 23-Power Supply Module; 31-Operating Condition Acquisition Unit; 311-Sensing Component; 312-Differential Operational Amplifier Component; U1-Differential Operational Amplifier; R1-First Resistor; R2-Second Resistor; R3-Third Resistor; R4-Fourth Resistor; R5-Fifth Resistor; R6-Sixth Resistor; R7-Seventh Resistor; 40-Server; 41-Memory; 42-Processor; 43-Communication Module. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] As described in the background section, existing current-mode digital-to-analog converter (DAC) control systems can only provide a fixed drive current, lacking both integrated current monitoring and dynamic adjustment capabilities. This fixed output mode leads to additional power losses when the laser's operating conditions change. Furthermore, the lack of closed-loop monitoring of the output current accuracy prevents the system from correcting the DAC's output deviation in real time, affecting not only the laser's drive accuracy but also causing unnecessary energy waste. In addition, traditional designs cannot adjust the DAC's operating parameters according to actual load requirements, causing it to operate at a sub-optimal efficiency point, further exacerbating power consumption issues.

[0023] Based on this, this application provides a power supply control device and method that can significantly reduce the operating power consumption of a current-mode digital-to-analog converter while ensuring driving accuracy.

[0024] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Please refer to Figure 1 , Figure 1 A schematic diagram of the power supply control device provided in an embodiment of the present invention is shown. In this embodiment, the power supply control device 20 is applied to the optoelectronic system 10. The optoelectronic system 10 includes at least a current-type digital-to-analog converter 11. The output terminal of the current-type digital-to-analog converter 11 is connected to the power supply terminal of the load.

[0026] Please continue to refer to this. Figure 1 In this embodiment, the power supply control device 20 includes a parameter acquisition module 21, a main control module 22, and a power supply module 23. The acquisition terminal of the main control module 22 is connected to the output terminal of the parameter acquisition module 21, and the output terminal of the main control module 22 is connected to the control terminal of the power supply module 23 and the control terminal of the current-mode digital-to-analog converter 11. The output terminal of the power supply module 23 is connected to the power supply terminal of the current-mode digital-to-analog converter 11.

[0027] To reduce the power consumption of the current-mode digital-to-analog converter 11, the parameter acquisition module 21 in this application is used to acquire the operating parameters of the current-mode digital-to-analog converter in real time. These operating parameters include temperature parameters, current parameters, and voltage parameters.

[0028] Please continue to refer to this. Figure 1 In this application, the main control module 22 is used to send control commands to the power supply module and the current-type digital-to-analog converter based on temperature parameters, current parameters and voltage parameters, so as to adjust the power supply voltage and output current of the current-type digital-to-analog converter respectively, so as to improve the efficiency of the current-type digital-to-analog converter.

[0029] Based on this, the parameter acquisition module in this application acquires parameters such as the ambient temperature and operating current of the current-type digital-to-analog converter in real time. The main control module then adjusts the output current and supply voltage of the current-type digital-to-analog converter based on the above parameters to adapt to the current demand of the load due to changes in the environment such as temperature, ensuring that the load (e.g., a laser) can work stably in a wide temperature range and improving the accuracy of the output current and the stability of the system.

[0030] It should be noted that this embodiment does not limit the specific structure of the parameter acquisition module.

[0031] In one possible implementation method, please refer to Figure 2 , Figure 2 The diagram shows a schematic of the parameter acquisition module provided in an embodiment of the present invention. When the working parameters include current parameters and voltage parameters, the parameter acquisition module 21 in this embodiment includes at least one working condition acquisition unit 31.

[0032] Please continue to refer to this. Figure 2 In this embodiment, the operating condition acquisition unit 31 includes a sensing component 311 and a differential operational amplifier component 312. The sensing component 311 is connected to the output terminal of the current-type digital-to-analog converter 11 and the input terminal of the differential operational amplifier component 312. The output terminal of the differential operational amplifier component 312 is connected to the acquisition terminal of the main control module 22.

[0033] In this embodiment, the sensing component 311 is used to collect the output current of the current-type digital-to-analog converter to obtain a current signal. The differential operational amplifier component 312 then amplifies the current signal for the main control module to perform control processing.

[0034] In one possible implementation method, please refer to Figure 3 , Figure 3 A circuit diagram of a power supply control device provided in an embodiment of the present invention is shown. In this embodiment, the sensing component 311 is composed of a resistor. The sensing component 311 can be located at the high potential end or the low potential end of the load.

[0035] Please continue to refer to this. Figure 3 When the sensing component 311 is placed at the high potential end of the load, it is assumed that the sensing component 311 includes a first resistor R1 in this embodiment. At this time, the output current of the current-type digital-to-analog converter 11 flows into the load through the first resistor R1.

[0036] Furthermore, this application does not limit the structure of the differential operational amplifier component 312. For one possible implementation, please refer to [reference needed]. Figure 3 In this embodiment, the differential operational amplifier component 312 is composed of a differential operational amplifier U1 and an external resistor.

[0037] Please continue to refer to this. Figure 3 When the sensing component 311 is placed at the high potential end of the load, it is assumed that the sensing component 311 in this embodiment includes a first resistor R1. In this embodiment, the peripheral resistors include a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7. The first end of the third resistor R3 is connected to the first end of the first resistor R1, the negative input terminal of the differential operational amplifier U1, and the first end of the sixth resistor R6. The first end of the fourth resistor R4 is connected to the second end of the first resistor R1, the positive input terminal of the differential operational amplifier U1, and the first end of the fifth resistor R5. The second end of the fifth resistor R5 is grounded. The second end of the sixth resistor R6 is connected to the output terminal of the differential operational amplifier U1 and the first end of the seventh resistor R7. The second end of the seventh resistor R7 is connected to the input terminal of the main control module 22.

[0038] Please Figure 3 Based on, refer to Figure 4 , Figure 4 Another circuit diagram of the power supply control device provided in the embodiment of the present invention is shown. When the sensing component 311 is set at the low potential end of the load, it is assumed that the sensing component 311 in this embodiment includes a second resistor R2. At this time, the output current of the current-type digital-to-analog converter 11 flows into the second resistor R2 after passing through the load.

[0039] To reduce the voltage drop across the first resistor R1 or the second resistor R2, in this embodiment, the first resistor R1 and / or the second resistor R2 can be selected as resistors with small resistance values ​​and high precision (e.g., milliohm level).

[0040] It should be noted that this embodiment does not limit the number of operating condition acquisition units.

[0041] In one possible implementation method, please refer to Figure 5 , Figure 5 This diagram illustrates another structural schematic of the power supply control device provided in an embodiment of the present invention. When the sensing component 311 is set at the high potential end of the load, that is, each acquisition resistor is set at the high potential end of the corresponding load, and when the current-type digital-to-analog converter corresponds to multiple loads, the parameter acquisition module 21 in this embodiment may include multiple operating condition acquisition units 31, wherein each sensing component 311 corresponds to one load, so that the output current of the current-type digital-to-analog converter is grounded through the corresponding operating condition acquisition unit and the corresponding load.

[0042] To improve the load-driving capability of the current-mode digital-to-analog converter, this embodiment can connect two or more output pins of the current-mode digital-to-analog converter in parallel.

[0043] It should be noted that in this embodiment, the number of parallel channels of the current-mode digital-to-analog converter depends on the maximum drive current that its single-channel output can provide and the maximum current required for the load to operate.

[0044] In this embodiment, the maximum current output by the current-mode digital-to-analog converter after parallel connection of its output pins is equal to the product of the maximum output current of a single channel and the number of parallel channels. Assuming that the current provided by a single current-mode digital-to-analog converter pin is I, and the number of parallel channels is n, then the maximum current provided is n. I.

[0045] In another possible implementation, to reduce the device structure, this embodiment can place the sensing component at the low potential end of the load, with multiple loads corresponding to one sensing component.

[0046] In addition, the parameter acquisition module in this embodiment also includes a temperature sensor, which is installed at the structure where the current-type digital-to-analog converter is located, in order to acquire the temperature parameters of the current-type digital-to-analog converter, especially the ambient temperature.

[0047] It should be noted that this embodiment does not limit the structure of the main control module and power supply module described above.

[0048] In one possible implementation, the main control module in this embodiment includes a microcontroller unit (MCU). Correspondingly, the power supply module may consist of a power supply and a DC-DC converter. In this case, the output terminal of the MCU is connected to the control terminal of the DC-DC converter, the power supply is connected to the power supply terminal of the DC-DC converter, and the output terminal of the DC-DC converter is connected to the power supply terminal of the current-mode digital-to-analog converter.

[0049] After constructing the architecture of the above parameter acquisition module, the main control module 22 in this embodiment is used to determine the target output current of the current-type digital-to-analog converter based on the temperature parameter.

[0050] The main control module 22 is also used to determine the output current deviation based on the current parameters and the target output current.

[0051] The main control module 22 is also used to adjust the supply voltage based on the output current deviation to obtain the target supply voltage of the current-type digital-to-analog converter.

[0052] Among them, the supply voltage is greater than the high potential terminal voltage of the load.

[0053] Based on this, this embodiment can monitor the output current and supply voltage of the current-mode digital-to-analog converter and dynamically adjust the output voltage of the current-mode digital-to-analog converter by the main control module, so that the supply voltage U2 of the current-mode digital-to-analog converter is always slightly higher than the voltage required by the load, that is, the high potential terminal voltage U1 of the load, thereby improving the working efficiency α of the current-mode digital-to-analog converter.

[0054] Specifically, the working principle of improving the operating efficiency α of the current-mode digital-to-analog converter by increasing the supply voltage U2 of the current-mode digital-to-analog converter is as follows: When the load is operating stably (i.e., the current and voltage required by the load are relatively stable), the efficiency of the current-mode digital-to-analog converter is defined as the ratio of the energy provided by the current-mode digital-to-analog converter to the total energy provided by the power supply module, i.e., α=W1 / W2; where W1 is the energy consumed by the load unit and W2 is the total energy consumed by the current-mode digital-to-analog converter.

[0055] In this embodiment, the energy consumed by the load unit is the product of the high-point voltage at the load terminal and the total current consumed by the load unit, which is expressed as: W1 = I1 U1; where U1 is the voltage at the high potential end of the load, and I1 is the total current consumed by the load unit.

[0056] Correspondingly, the total energy consumed by the current-mode digital-to-analog converter is the product of the voltage supplied by the current-mode converter and the total current consumed by the current-mode converter, which is expressed as: W2 = I2 U2; where U2 is the voltage provided by the current-mode digital-to-analog converter, which is equal to the total voltage provided by the power supply module, and I2 is the total current consumed by the current-mode digital-to-analog converter.

[0057] Under normal circumstances, the total current consumed by the load is approximately equal to the total current consumed by the current-mode digital-to-analog converter, i.e., I1=I2.

[0058] In summary, the formula for calculating the work efficiency α is: α = U1 / U2.

[0059] Based on this, when the total current I1 consumed by the load unit and the total current I2 consumed by the current-mode digital-to-analog converter are relatively constant or the device operating temperature tends to be constant, it indicates that the load is in a stable operating state. At this time, the energy consumed by the load is relatively stable. In this embodiment, the output voltage of the current-mode digital-to-analog converter can be adjusted by the main control module to improve its own operating efficiency α.

[0060] Furthermore, the changes in the stable operating state of the load are affected by the load's own characteristics or environmental factors (especially temperature), meaning that ambient temperature can cause the load's required current to increase or decrease.

[0061] Specifically, assuming the load is a laser LD, it can be seen from the characteristics of the laser LD that when the operating temperature of the laser LD increases, the slack efficiency of the laser LD will increase. In order to maintain the output optical power before the temperature change, more current needs to be consumed, that is, the total current I1 consumed by the load unit increases. When the operating temperature of the laser LD decreases, the slack efficiency of the laser LD will increase. In order to maintain the output optical power before the temperature change, less current needs to be consumed, that is, the total current I1 consumed by the load unit decreases.

[0062] To ensure the stability of the adjusted load, the output current of the current-type digital-to-analog converter can be adjusted through the main control module in this embodiment.

[0063] Based on this, in one possible implementation, to improve control accuracy, this embodiment initializes the supply voltage and output current of the current-mode digital-to-analog converter before dynamic adjustment. In another possible implementation, this embodiment first obtains the current ambient temperature and then configures the target output current and target supply voltage of the current-mode digital-to-analog converter based on this initial ambient temperature. After entering the working state, the main control module 22 needs to constantly monitor the target output current and determine whether it has changed. If it has changed, the target output current needs to be updated first.

[0064] In this embodiment, if the target output current changes, the priority method for updating the target output current is as follows: Once in working condition, the main control module 22 also filters initial output current values ​​that match the temperature parameters from a preset temperature-current calibration library. Then, based on the initial ambient temperature and temperature parameters, it determines the temperature change of the environment in which the current-type digital-to-analog converter operates. It then determines whether the temperature change is below a preset threshold; if so, it updates the initial output current value using a linear incremental method; otherwise, it uses the initial output current value as the final target output current.

[0065] In this embodiment, the main control module 22 acquires the temperature of the environment where the current-mode digital-to-analog converter is located in real time. Then, select the temperature parameter from the preset temperature-current calibration library. Matching initial output current value And calculate the initial ambient temperature. Temperature difference Then, at that temperature difference When the current value is below a preset threshold, the initial output current value is updated using a linear incremental method. To obtain the target output current .

[0066] In this embodiment, a preset temperature-current calibration library is used to characterize the calibration data table of the drive current required to maintain a stable operating state (e.g., constant optical power) at different temperatures.

[0067] Furthermore, to improve accuracy, if the temperature parameter falls within any calibration temperature range, the main control module 22 in this embodiment is also used to calculate the initial output current value based on the upper and lower limits of the calibration temperature range using the linear interpolation method. The upper limit of the calibration temperature range... Lower limit value These are two adjacent calibration temperature points.

[0068] The initial output current value in this embodiment The calculation formula satisfies: In the formula, The current temperature parameter, The temperature is The corresponding current value at that time; For temperature The corresponding current value at that time.

[0069] To further adapt to individual device differences or gradual environmental drift, the main control module 22 is also used to calculate a current weighted value using a preset temperature-current coefficient and the temperature change when the temperature change is below a preset threshold. The main control module 22 is also used to update the initial output current value based on the current weighted value to obtain the target output current.

[0070] That is, when the temperature difference ΔT is lower than the preset threshold, the formula for updating the initial output current value using the linear incremental method in this embodiment satisfies: ,in, The temperature-current variation coefficient of the load is given by the following unit: mA / ℃.

[0071] Target output current to be determined Subsequently, in this embodiment, the main control module then bases its output current on the target output current. Calculation and real-time operating current The difference between them yields the current deviation. .

[0072] At this time, the main control module 22 is also used to determine whether the output current deviation is less than the first preset error threshold. If so, the power supply voltage is increased according to the preset voltage adjustment step to obtain the target power supply voltage.

[0073] The main control module 22 is also used to determine whether the output current deviation is less than the second preset error threshold when the output current deviation is greater than the first preset error threshold. If it is, the supply voltage is used as the target supply voltage; if not, the supply voltage is reduced in a preset voltage adjustment step to obtain the target supply voltage.

[0074] In this embodiment, the first preset error threshold and the second preset error threshold can be the lower limit and upper limit of the allowable current error range, respectively. Assuming that the allowable current error range satisfies [-X, +X], the first preset error threshold can be -X and the second preset error threshold can be +X.

[0075] Based on this, when the main control module determines that the output current deviation is less than the first preset error threshold, the main control module can update the power supply voltage based on the preset voltage adjustment step to obtain the initial target power supply voltage, and use the initial target power supply voltage as the new power supply voltage, and return to execute the steps based on the preset voltage adjustment step until the number of iterations meets the preset threshold, and output the final target power supply voltage.

[0076] When the main control module determines that the output current deviation is less than the first preset error threshold, it indicates that the output current is less than the target lower limit, that is, the power supply voltage U2 of the current-type digital-to-analog converter is too small and insufficient to maintain a stable output current. At this time, the power supply voltage needs to be increased.

[0077] In one possible implementation, this embodiment may set a preset voltage regulation step. For any constant value, the target supply voltage in any iteration round The update formula satisfies: That is, the voltage output of any iteration process is based on the output voltage of the previous iteration, plus a preset voltage adjustment step, until the number of iterations meets the preset maximum number of iterations, and the voltage output corresponding to the current iteration is used as the final target power supply voltage.

[0078] In addition, in this embodiment, the main control module 22 is also used to determine whether the final target power supply voltage is within the preset error range. If not, it is determined that the power supply control device is in an abnormal critical state. The preset error range is determined by the first preset error threshold and the second preset error threshold.

[0079] This embodiment also determines whether the final target power supply voltage is within the preset error range during the continuous adjustment process; that is, if the final target power supply voltage still does not meet the requirements... If the system is in an abnormal critical state, the voltage regulation output must be immediately blocked and the alarm flag triggered. This effectively avoids uncontrolled oscillations caused by hardware aging or extreme environments, ensuring the absolute safety and robustness of the system.

[0080] When the main control module determines that the output current deviation is greater than the second preset error threshold, it indicates that the output current exceeds the target lower limit, that is, the power supply voltage U2 of the current-type digital-to-analog converter is too high, causing the power consumption of the current-type digital-to-analog converter itself to be wasted. At this time, the power supply voltage needs to be reduced.

[0081] Similar to the previous embodiment, this embodiment can set a preset voltage adjustment step. For any constant value, the target supply voltage in any iteration round The update formula satisfies: That is, the voltage output of any iteration process is the output voltage of the previous iteration minus the preset voltage adjustment step value, until the number of iterations meets the preset maximum number of iterations, and the voltage output corresponding to the current iteration is the final target power supply voltage.

[0082] Similarly, this embodiment also determines in real time whether the final target supply voltage is within the preset error range during the continuous adjustment process; that is, if the final target supply voltage still does not meet the requirements... If the system is in an abnormal critical state, the voltage regulation output must be immediately blocked and the alarm flag triggered. This effectively avoids uncontrolled oscillations caused by hardware aging or extreme environments, ensuring the absolute safety and robustness of the system.

[0083] Furthermore, if the main control module determines that the output current deviation is within the allowable current error range, then the condition is met. This indicates that the current output current is within the target accuracy range, and the current-mode digital-to-analog converter output is stable. At this time, the output voltage remains unchanged, i.e., the target supply voltage. The update formula satisfies: .

[0084] In summary, this application, by performing closed-loop monitoring and comparison of the output current of the current-mode digital-to-analog converter and precisely adjusting the supply voltage based on the comparison structure, can ensure that the load obtains an accurate and stable drive current, avoid output fluctuations or instability caused by improper supply voltage, improve the accuracy of the output current, and ensure the stability of the system in which the current-mode digital-to-analog converter is located.

[0085] Following the same approach as the previous embodiment, the present invention also provides a power supply control method, applicable to the power supply control device of any of the first aspects described above. Please refer to [reference needed]. Figure 6 , Figure 6A flowchart illustrating the steps of a power supply control method provided in an embodiment of the present invention is shown. The power supply control method includes: Step 100: Use the parameter acquisition module to obtain the operating parameters of the current-mode digital-to-analog converter in real time.

[0086] The operating parameters include temperature, current, and voltage. Step 200: The main control module sends control commands to the power supply module and the current-mode digital-to-analog converter based on temperature, current and voltage parameters, respectively, to adjust the power supply voltage and output current of the current-mode digital-to-analog converter in order to improve the efficiency of the current-mode digital-to-analog converter.

[0087] The specific implementation scheme and technical effects of the power supply control method in this embodiment can be referred to the power supply control device 20 provided in the previous embodiment. Its basic principle and the resulting technical effects are the same as those in the above embodiment. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding contents in the above embodiments.

[0088] Following the same approach as the previous embodiment, refer to... Figure 7 , Figure 7 A block diagram of a server provided in an embodiment of the present invention is shown. The server 40 includes a memory 41, a processor 42, and a communication module 43. The memory 41, processor 42, and communication module 43 are electrically connected to each other directly or indirectly to realize data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses or signal lines.

[0089] The memory 41 is used to store programs or data. The memory 41 may be, but is not limited to, random access memory (RAM), read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), etc.

[0090] The processor 42 is used to read / write data or programs stored in the memory 41 and execute corresponding functions, namely, using the parameter acquisition module 21 to acquire the operating parameters of the current-type digital-to-analog converter 11 in real time. These operating parameters include temperature, current, and voltage parameters. Then, the main control module 22 sends control commands to the power supply module 23 and the current-type digital-to-analog converter 11 based on the temperature, current, and voltage parameters, adjusting the power supply voltage and output current of the current-type digital-to-analog converter 11 to improve its efficiency.

[0091] The communication module 43 is used to establish a communication connection between the server 40 and other communication terminals through the network, and to send and receive data through the network.

[0092] It should be understood that, Figure 7 The structure shown is only a schematic diagram of server 40. Server 40 may also include components that are larger than... Figure 7 The more or fewer components shown, or having the same Figure 7 The different configurations shown. Figure 7 The components shown can be implemented using hardware, software, or a combination thereof.

[0093] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can also be implemented in other ways. The apparatus embodiments described above are merely illustrative; for example, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, and combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0094] In addition, the functional modules in the various embodiments of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

[0095] If the aforementioned functions are implemented as software functional modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server 40, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0096] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power supply control device applied to an optoelectronic system, the optoelectronic system comprising at least a current-mode digital-to-analog converter, the output terminal of the current-mode digital-to-analog converter being connected to the power supply terminal of a load, characterized in that, The power supply control device includes: a parameter acquisition module, a main control module, and a power supply module; the acquisition terminal of the main control module is connected to the output terminal of the parameter acquisition module, and the output terminal of the main control module is connected to the control terminal of the power supply module and the control terminal of the current-mode digital-to-analog converter; the output terminal of the power supply module is connected to the power supply terminal of the current-mode digital-to-analog converter. The parameter acquisition module is used to acquire the operating parameters of the current-type digital-to-analog converter in real time, including temperature parameters, current parameters, and voltage parameters. The main control module is used to send control commands to the power supply module and the current-mode digital-to-analog converter based on the temperature parameters, the current parameters, and the voltage parameters, so as to adjust the power supply voltage and output current of the current-mode digital-to-analog converter respectively, thereby improving the efficiency of the current-mode digital-to-analog converter.

2. The power supply control device according to claim 1, characterized in that, The main control module is used to determine the target output current of the current-type digital-to-analog converter based on the temperature parameter; The main control module is also used to determine the output current deviation based on the current parameters and the target output current; The main control module is also used to adjust the supply voltage based on the output current deviation to obtain the target supply voltage of the current-type digital-to-analog converter, wherein the supply voltage is greater than the high potential terminal voltage of the load.

3. The power supply control device according to claim 2, characterized in that, The main control module is also used to select an initial output current value that matches the temperature parameter from a preset temperature-current calibration library; The main control module is also used to determine the temperature change of the environment in which the current-type digital-to-analog converter is located based on the initial ambient temperature and the temperature parameters. The main control module is also used to determine whether the temperature change is lower than a preset threshold. If so, the initial output current value is updated using a linear incremental method; otherwise, the initial output current value is used as the final target output current.

4. The power supply control device according to claim 3, characterized in that, The main control module is also used to calculate the initial output current value based on the upper and lower limits of the calibration temperature range using the linear difference method when the temperature parameter is within any calibration temperature range; wherein the upper and lower limits of the calibration temperature range are two adjacent calibration temperature points.

5. The power supply control device according to claim 3, characterized in that, The main control module is also used to calculate a current weighted value using a preset temperature-current coefficient and the temperature change when the temperature change is lower than the preset threshold. The main control module is also used to update the initial output current value based on the current weighted value to obtain the target output current.

6. The power supply control device according to claim 2, characterized in that, The main control module is also used to determine whether the output current deviation is less than a first preset error threshold. If so, the power supply voltage is increased according to a preset voltage adjustment step to obtain the target power supply voltage. The main control module is further configured to determine whether the output current deviation is less than a second preset error threshold when the output current deviation is greater than the first preset error threshold. If yes, the supply voltage is used as the target supply voltage; otherwise, the supply voltage is reduced according to a preset voltage adjustment step to obtain the target supply voltage.

7. The power supply control device according to claim 6, characterized in that, The main control module is further configured to update the power supply voltage based on the preset voltage adjustment step when it is determined that the output current deviation is less than the first preset error threshold, to obtain an initial target power supply voltage, and use the initial target power supply voltage as the new power supply voltage, return to execute the steps based on the preset voltage adjustment step, until the number of iterations meets the preset threshold, and output the final target power supply voltage.

8. The power supply control device according to claim 7, characterized in that, The main control module is also used to determine whether the final target power supply voltage is within a preset error range. If not, the power supply control device is determined to be in an abnormal critical state. The preset error range is determined by the first preset error threshold and the second preset error threshold.

9. The power supply control device according to claim 1 or 2, characterized in that, When the operating parameters include current parameters and voltage parameters, the parameter acquisition module includes at least one operating condition acquisition unit. The operating condition acquisition unit includes a sensing component and a differential operational amplifier component. The sensing component is connected to the output terminal of the current-type digital-to-analog converter and the input terminal of the differential operational amplifier component. The output terminal of the differential operational amplifier component is connected to the acquisition terminal of the main control module.

10. A power supply control method, characterized in that, The power supply control method, applied to the power supply control device according to any one of claims 1 to 9, comprises: The operating parameters of the current-type digital-to-analog converter are acquired in real time using a parameter acquisition module. These operating parameters include temperature parameters, current parameters, and voltage parameters. The main control module sends control commands to the power supply module and the current-mode digital-to-analog converter based on the temperature parameters, current parameters, and voltage parameters, respectively, to adjust the power supply voltage and output current of the current-mode digital-to-analog converter, thereby improving the efficiency of the current-mode digital-to-analog converter.

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