Feedback voltage dynamic regulation circuit and method

Abstract

The present invention relates to a feedback voltage dynamic regulation circuit and method, the feedback voltage dynamic regulation circuit comprises a level voltage divider module, a DC-DC conversion module, a scene mode stress module and a plurality of feedback regulation units, the feedback signal output end of the level voltage divider module is connected to the feedback signal input end of the DC-DC conversion module, the feedback signal regulation end of the level voltage divider module is respectively connected to the power signal input end of each feedback regulation unit, the enable signal input end of each feedback regulation unit is connected to the enable signal output end corresponding to the scene mode stress module, the conduction state of each feedback regulation unit is controlled by the scene mode stress module, and the scene mode stress module selectively activates the feedback regulation unit. The activated feedback regulation unit changes the feedback signal by adjusting the impedance combination of the feedback voltage divider network, thereby dynamically changing the output voltage of the DC-DC conversion module to adapt to the voltage requirements of different application scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of dynamic regulation of feedback voltage, and in particular to a dynamic regulation circuit and method for feedback voltage. Background Art

[0002] At present, in traditional DC-DC power supply design, the output voltage is usually set to a fixed value through the voltage divider resistor network in the feedback circuit. When the output voltage needs to be adjusted according to different application scenarios, the feedback resistor is usually manually replaced to change the voltage divider ratio to adapt to the needs. This method not only requires modifications to the bill of materials, or BOM, but also requires engineers to accurately select and replace the resistance value, and this process has several potential disadvantages: First, frequent BOM modifications increase the complexity of the design and production links, which can easily lead to selection errors or improper material matching; second, the production of different batches requires repeated adjustments to the feedback circuit, which increases the difficulty of operation and the probability of error in the production line; finally, due to human factors or operational errors, the feedback resistance value may be improperly selected, causing the voltage to deviate from the design target, and may even affect subsequent circuits. These problems not only reduce production efficiency, but also significantly increase product development and maintenance costs, limiting the flexibility of power supply design in multi-scenario applications. Summary of the invention

[0003] In order to solve the problems of design complexity, low production efficiency and insufficient voltage regulation flexibility caused by manual adjustment of feedback resistance in traditional DC-DC power supply design, the present invention provides a feedback voltage dynamic regulation circuit and method.

[0004] A feedback voltage dynamic regulation circuit, the feedback voltage dynamic regulation circuit comprising a level voltage divider module, a DC-DC conversion module, a dynamic feedback regulation module and a scene mode stress module, the dynamic feedback regulation module comprising a plurality of feedback regulation units, the power input end of the DC-DC conversion module is connected to the power supply, the power output end of the DC-DC conversion module is connected to the load, the common node between the power output end of the DC-DC conversion module and the load is connected to the power signal input end of the level voltage divider module, the feedback signal output end of the level voltage divider module is connected to the feedback signal input end of the DC-DC conversion module, the power The feedback signal adjustment end of the equalizing voltage dividing module is respectively connected to the power signal input end of each of the feedback adjustment units, and the enable signal input end of each of the feedback adjustment units is connected to the enable signal output end corresponding to the scene mode stress module. The scene mode stress module is used to generate a corresponding stress enable signal according to the determined scene mode, and then send the stress enable signal to the corresponding feedback adjustment unit. The feedback adjustment unit is used to control its own conduction state according to the stress enable signal to form different voltage dividing networks, so that the feedback signal input end of the DC-DC conversion module receives different feedback signals through different voltage dividing networks.

[0005] By adopting the above technical solution, the present invention receives the power input signal through the power input terminal of the DC-DC conversion module, and provides a stable output signal to the load; at the same time, the level voltage divider module generates a feedback signal according to the output signal of the DC-DC conversion module, and transmits it to the DC-DC conversion module through the feedback signal input terminal to adjust the output voltage. The dynamic feedback adjustment module is composed of a plurality of feedback adjustment units, and the conduction state of each feedback adjustment unit is controlled by the scene mode stress module. The scene mode stress module generates a corresponding stress enable signal according to the scene mode acquired in real time, and selectively activates the feedback adjustment unit. The activated feedback adjustment unit changes the feedback signal by adjusting the impedance combination of the feedback voltage divider network, thereby dynamically changing the output voltage of the DC-DC conversion module, and can realize automatic adjustment of the output voltage through software control, adapt to the voltage requirements of different application scenarios, avoid the cumbersome operation of manually adjusting the feedback resistor, and improve the flexibility of circuit design, production efficiency and system reliability.

[0006] Preferably, the level divider module includes a resistor PR1, a resistor PR2, a short-circuit PJ2 and a capacitor PC14, the first end of the short-circuit PJ2 is connected to a common node between the power output end of the DC-DC conversion module and the load, the second end of the short-circuit PJ2 is connected to the first end of the capacitor PC14, the second end of the capacitor PC14 is connected to the first end of the resistor PR2, the second end of the resistor PR2 is grounded, the second end of the short-circuit PJ2 is connected to the first end of the resistor PR1, the second end of the resistor PR1 is connected to the first end of the resistor PR2, and the common node between the second end of the resistor PR1 and the first end of the resistor PR2 is connected to the feedback signal input end of the DC-DC conversion module.

[0007] By adopting the above technical solution, a stable level voltage division module can be formed through the reasonable connection of the short-circuit PJ2 with the resistor PR1, the resistor PR2 and the capacitor PC14, which can effectively divide and filter the feedback signal, thereby enhancing the stability of the feedback signal and reducing the impact of external interference or transient fluctuations on circuit performance.

[0008] Preferably, the feedback adjustment unit includes a resistor PR8 and a transistor Q1, the first end of the resistor PR8 is connected to a common node between the second end of the resistor PR1 and the first end of the resistor PR2, the second end of the resistor PR8 is connected to the first conduction end of the transistor Q1, the second conduction end of the transistor Q1 is grounded, and the controlled end of the transistor Q1 is connected to the enable signal output end of the scene mode stress module.

[0009] By adopting the above technical solution, dynamic switching control of the feedback signal path can be achieved through the cooperation of resistor PR8 and transistor Q1 in the feedback adjustment unit, and the feedback path can be dynamically adjusted according to the stress enable signal output by the scene mode stress module, thereby achieving flexible adjustment of the feedback signal to meet the output voltage requirements in different scenarios.

[0010] Preferably, the DC-DC conversion module includes a DC-DC chip PU1, an inductor PL1, a resistor PR6 and a resistor PR7, the start / stop enable signal input terminal of the DC-DC chip PU1 is connected to the enable signal output terminal of the power supply to control the start / stop state of the DC-DC chip PU1, the power input terminal of the DC-DC chip PU1 is connected to the power supply, the power output terminal of the DC-DC chip PU1 is connected to the first end of the inductor PL1, the second end of the inductor PL1 is connected to the load, the first end of the resistor PR6 is connected to the power supply, the second end of the resistor PR6 is connected to the first end of the resistor PR7, the second end of the resistor PR7 is grounded, the common node between the second end of the resistor PR6 and the first end of the resistor PR7 is connected to the power state signal output terminal of the DC-DC chip PU1, and the common node between the second end of the resistor PR6 and the first end of the resistor PR7 is used to output the power state signal after voltage division adjustment by the resistor PR6 and the resistor PR7 to adapt to the signal level required by the corresponding logic control element.

[0011] By adopting the above technical solution, a voltage stabilization circuit can be constructed through the DC-DC chip PU1, inductor PL1 and resistors PR6 and PR7 included in the DC-DC conversion module, and the power status signal can be adjusted by voltage division in combination with the voltage divider network formed by PR6 and PR7, so as to adjust the power status signal to a signal level that adapts to the requirements of the logic control element, thereby improving the adaptability and stability of the power signal in logic control.

[0012] A feedback voltage dynamic regulation method is applied to a feedback voltage dynamic regulation circuit, and the feedback voltage dynamic regulation method includes:

[0013] Acquire power environment data, the power environment data including at least temperature data, battery power data, load current data and communication protocol status data, and match the power environment data with a preset scene database to determine a target scene mode;

[0014] Controlling the scene mode stress module to determine a corresponding impedance combination according to the target scene mode, generating a corresponding stress enable signal according to the impedance combination, and sending the stress enable signal to a corresponding feedback adjustment unit;

[0015] Controlling the feedback regulation unit to be turned on based on the stress enable signal to form a corresponding voltage division network with the level voltage division module;

[0016] The DC-DC conversion module is controlled to obtain the feedback signal generated by the voltage divider network, the corresponding target voltage value is dynamically determined according to the feedback signal, and the output voltage value of the DC-DC conversion module is adjusted in real time so that the output voltage value is consistent with the target voltage value.

[0017] By adopting the above technical solution, by acquiring power environment data, matching these data with the preset scene database, and identifying the current target scene mode; then, the scene mode stress module determines the corresponding impedance combination according to the target scene mode, and generates the corresponding stress enable signal to be sent to the feedback adjustment unit; the feedback adjustment unit selectively conducts according to the stress enable signal, and forms different voltage divider networks with the level voltage divider module, thereby adjusting the feedback signal; the DC-DC conversion module obtains the feedback signal output by the voltage divider network in real time, dynamically determines the target output voltage value through the internal control logic, and adjusts the output voltage to make it consistent with the target voltage. Through this method, the output voltage is automatically, multi-mode, and precisely adjusted, which can adapt to the needs of various complex scenarios, avoids the tedious operation of manually adjusting the feedback resistor in the traditional circuit, and improves the flexibility, reliability and intelligence of the circuit.

[0018] Preferably, the step of matching the power environment data with a preset scene database to determine a target scene mode includes:

[0019] Determining a preset scene mode, and determining a scene priority corresponding to the preset scene mode;

[0020] Match the power environment data with the scene conditions stored in the preset scene mode one by one, and select the corresponding preliminary scene mode;

[0021] Based on the scene priorities, a target scene mode is determined in each of the preliminary scene modes.

[0022] By adopting the above technical solution, it is possible to achieve accurate matching of power environment data through preset scene modes and corresponding scene priority settings, screen out preliminary scene modes that meet the scene conditions, and determine the target scene mode based on the priority rules, thereby improving the decision-making efficiency of the scene mode, avoiding unclear feedback path selection caused by conflicts in multiple scene conditions, and ensuring the accuracy and reliability of power regulation.

[0023] Preferably, before the step of matching the power environment data with the scene conditions stored in the preset scene database one by one, the method further includes:

[0024] Determining a matching confidence interval, wherein after the previous target scene mode is determined, generating a matching confidence interval corresponding to the previous target scene mode based on the determined confidence interval mapping relationship;

[0025] Determine whether the power environment data exceeds the matching confidence interval, and if not, continue to determine;

[0026] If so, the conduction states of all the feedback adjustment units are reset, and the power environment data are matched one by one with the scene conditions stored in the preset scene mode.

[0027] By adopting the above technical solution, it is possible to monitor changes in power supply environment data in real time by setting a matching confidence interval. When the power supply environment data exceeds the matching confidence interval, the reset operation of the feedback adjustment unit is triggered, and the scene matching is re-executed to avoid false triggering of feedback adjustment caused by environmental data fluctuations or errors, thereby improving the stability of circuit operation and the adjustment accuracy.

[0028] Preferably, the step of determining a preset scene mode and determining a scene priority corresponding to the preset scene mode includes:

[0029] Determine the application system where the power supply is directly applied;

[0030] Loading a preset scene mode according to the application system, and a default priority rule corresponding to the preset scene mode, wherein the default priority rule includes at least a default priority and a dynamic priority weight factor;

[0031] Multiplying the power environment data and the dynamic priority weight factor to generate a corresponding environment priority;

[0032] The environment priority is subtracted from the default priority to generate a corresponding scene priority.

[0033] By adopting the above technical solution, it is possible to load the corresponding preset scene modes and priority rules according to the specific system scenarios of power supply applications, and adjust the scene priorities in real time in combination with dynamic priority weight factors, so that the system can dynamically optimize the priorities according to actual environmental changes, thereby ensuring that high-priority scene modes are given priority at critical moments, thereby improving the intelligence level and adaptability of feedback regulation.

[0034] Preferably, in the step of controlling the scene mode stress module to determine the corresponding impedance combination according to the target scene mode, the impedance combination includes a first impedance combination and a second impedance combination, and the step further includes:

[0035] Determining the voltage division requirement and accuracy requirement according to the target scene mode;

[0036] Acquire the unit impedance value of each of the feedback adjustment units, determine the unit impedance value closest to the voltage division requirement as the target impedance value, and determine the voltage division deviation allowable range of the target impedance value according to the accuracy requirement;

[0037] Determine whether the difference between the voltage division requirement and the target impedance value falls within the voltage division deviation allowable range, and if so, determine a first impedance combination, wherein the first impedance combination only includes a feedback adjustment unit corresponding to the voltage division deviation allowable range and the level voltage division module;

[0038] If it does not fall within the voltage division deviation allowable range, a second impedance combination is determined, where the second impedance combination includes a plurality of feedback adjustment units and the level voltage division module.

[0039] By adopting the above technical solution, it is possible to preferentially select a single target impedance value that meets the accuracy requirements to form a first impedance combination based on the voltage division requirements and accuracy requirements of the target scene mode and the impedance value of the feedback adjustment unit, and dynamically combine multiple feedback adjustment units to form a second impedance combination when the target impedance value cannot meet the requirements, thereby ensuring that the voltage divider network can meet the target voltage requirements with minimal deviation, thereby improving the flexibility and accuracy of the feedback network.

[0040] Preferably, if the voltage division deviation does not fall within the allowable range, the step of determining the second impedance combination includes:

[0041] Determine the corresponding associated impedance value according to the target impedance value, and then determine a combination scheme after the target impedance value is combined with each of the associated impedance values;

[0042] Calculate the combined impedance value of each combination scheme;

[0043] If the difference between the voltage division requirement and one of the combined impedance values ​​falls within the voltage division deviation allowable range, the feedback adjustment unit corresponding to the combined impedance value is determined, and then the second impedance combination is determined based on the feedback adjustment unit corresponding to the combined impedance value.

[0044] By adopting the above technical solution, it is possible to calculate the combination of the target impedance value and the associated impedance value, accurately evaluate whether the impedance values ​​after each combination meet the voltage division requirements, give priority to the combination scheme that meets the allowable deviation range, and lock the corresponding feedback adjustment unit to form a second impedance combination, thereby realizing dynamic optimization of the voltage division network in complex scenarios and further improving the accuracy and efficiency of output voltage regulation.

[0045] In summary, the present invention includes at least one of the following beneficial technical effects:

[0046] 1. The present invention receives a power input signal through the power input terminal of the DC-DC conversion module, and provides a stable output signal to the load; at the same time, the level voltage divider module generates a feedback signal according to the output signal of the DC-DC conversion module, and transmits it to the DC-DC conversion module through the feedback signal input terminal to adjust the output voltage. The dynamic feedback adjustment module is composed of a plurality of feedback adjustment units, and the conduction state of each feedback adjustment unit is controlled by the scene mode stress module. The scene mode stress module generates a corresponding stress enable signal according to the scene mode acquired in real time, and selectively activates the feedback adjustment unit. The activated feedback adjustment unit changes the feedback signal by adjusting the impedance combination of the feedback voltage divider network, thereby dynamically changing the output voltage of the DC-DC conversion module. The output voltage can be automatically adjusted through software control to adapt to the voltage requirements of different application scenarios, avoiding the tedious operation of manually adjusting the feedback resistor, and improving the flexibility of circuit design, production efficiency and system reliability;

[0047] 2. By acquiring power environment data, matching these data with the preset scene database, identifying the current target scene mode; then, the scene mode stress module determines the corresponding impedance combination according to the target scene mode, and generates the corresponding stress enable signal to be sent to the feedback adjustment unit; the feedback adjustment unit selectively conducts according to the stress enable signal, and forms different voltage divider networks with the level voltage divider module, thereby adjusting the feedback signal; the DC-DC conversion module obtains the feedback signal output by the voltage divider network in real time, dynamically determines the target output voltage value through the internal control logic, and adjusts the output voltage to make it consistent with the target voltage. Through this method, the output voltage is automatically, multi-mode, and precisely adjusted, which can adapt to the needs of various complex scenarios, avoids the tedious operation of manually adjusting the feedback resistor in the traditional circuit, and improves the flexibility, reliability and intelligence of the circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a flow chart of a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0049] Figure 2 It is a partial circuit diagram of a DC-DC conversion module in a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0050] Figure 3 It is a partial circuit diagram of a feedback voltage dynamic adjustment circuit in one embodiment of the present invention, which includes a level voltage division module, a DC-DC conversion module and a feedback adjustment unit in a dynamic feedback adjustment module;

[0051] Figure 4 is a flow chart of a method for dynamically adjusting feedback voltage in one embodiment of the present invention;

[0052] Figure 5 is a flow chart for implementing step S10 in a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0053] Figure 6 is another implementation flow chart of step S10 in a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0054] Figure 7 is a flow chart for implementing step S101 in a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0055] Figure 8 is a flow chart for implementing step S20 in a feedback voltage dynamic regulation circuit in one embodiment of the present invention;

[0056] Fig. 9 It is a flow chart for implementing step S204 in a feedback voltage dynamic regulation circuit in one embodiment of the present invention.

[0057] Description of reference numerals:

[0058] 1. Level voltage division module; 2. DC-DC conversion module; 3. Dynamic feedback regulation module; 30. Feedback regulation unit; 4. Scene mode stress module. DETAILED DESCRIPTION

[0059] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0060] In one embodiment, if Figure 1-Figure 3As shown, the present invention discloses a feedback voltage dynamic regulation circuit, which specifically includes a feedback voltage dynamic regulation circuit, a feedback voltage dynamic regulation circuit includes a level voltage division module 1, a DC-DC conversion module 2, a dynamic feedback regulation module 3 and a scene mode stress module 4, the dynamic feedback regulation module 3 includes a plurality of feedback regulation units 30, the power input end of the DC-DC conversion module 2 is connected to the power supply, the power output end of the DC-DC conversion module 2 is connected to the load, the common node between the power output end of the DC-DC conversion module 2 and the load is connected to the power signal input end of the level voltage division module 1, and the feedback signal output end of the level voltage division module 1 is connected to the DC-DC conversion module 2. The feedback signal input terminal of the level voltage divider module 1 is connected, the feedback signal adjustment terminal of the level voltage divider module 1 is respectively connected to the power signal input terminal of each feedback adjustment unit 30, and the enable signal input terminal of each feedback adjustment unit 30 is connected to the enable signal output terminal corresponding to the scene mode stress module 4. The scene mode stress module 4 is used to generate a corresponding stress enable signal according to the determined scene mode, and then send the stress enable signal to the corresponding feedback adjustment unit 30. The feedback adjustment unit 30 is used to control its own conduction state according to the stress enable signal to form different voltage divider networks, so that the feedback signal input terminal of the DC-DC conversion module 2 receives different feedback signals through different voltage divider networks.

[0061] In this embodiment, the logic of the above-mentioned feedback voltage dynamic regulation circuit realizes dynamic feedback regulation through the port connection and control logic between each module to meet the needs of the power supply output voltage in different scenarios. The power input end of the DC-DC conversion module 2 is directly connected to the power supply to receive the input voltage for energy conversion, and its power output end is connected to the load to provide a stable output voltage for the external device. The common node between the power output end of the DC-DC conversion module 2 and the load is connected through the power signal input end of the level voltage divider module 1. The level voltage divider module 1 is responsible for generating a feedback signal and connecting to the feedback signal input end of the DC-DC conversion module 2 through its feedback signal output end, so as to realize the closed-loop regulation of the output voltage of the DC-DC conversion module 2. The feedback signal regulation end of the level voltage divider module 1 is respectively connected to the power signal input end of the multiple feedback regulation units 30 in the dynamic feedback regulation module 3 through wires. The dynamic feedback regulation module 3 controls the impedance combination in the feedback network through these connections to dynamically change the voltage divider ratio of the voltage divider network. The conduction state of each feedback regulation unit 30 is controlled by the scene mode stress module 4, which generates a stress enable signal according to the real-time scene data, and is connected to the enable signal input terminal of the feedback regulation unit 30 through the corresponding enable signal output terminal. The scene mode stress module 4 receives and processes the power environment data, identifies the current scene mode, and dynamically determines the feedback regulation unit 30 that needs to be activated, thereby changing the impedance combination of the voltage divider network, and adjusting the generated feedback signal through the level voltage divider module 1. Finally, the feedback signal input terminal of the DC-DC conversion module 2 receives the signal and adjusts the output voltage to meet the target voltage requirement. This logic realizes the accuracy of dynamic feedback regulation at the control level, and ensures the adaptability of the output voltage and the efficiency of system operation in different scenarios through multi-module collaboration.

[0062] In summary, the present invention receives the power input signal through the power input terminal of the DC-DC conversion module 2, and provides a stable output signal to the load; at the same time, the level voltage divider module 1 generates a feedback signal according to the output signal of the DC-DC conversion module 2, and transmits it to the DC-DC conversion module 2 through the feedback signal input terminal to adjust the output voltage. The dynamic feedback adjustment module 3 is composed of a plurality of feedback adjustment units 30, and the conduction state of each feedback adjustment unit 30 is controlled by the scene mode stress module 4. The scene mode stress module 4 generates a corresponding stress enable signal according to the scene mode acquired in real time, and selectively activates the feedback adjustment unit 30. The activated feedback adjustment unit 30 changes the feedback signal by adjusting the impedance combination of the feedback voltage divider network, thereby dynamically changing the output voltage of the DC-DC conversion module 2, and can realize automatic adjustment of the output voltage through software control, adapt to the voltage requirements of different application scenarios, avoid the cumbersome operation of manually adjusting the feedback resistor, and improve the flexibility of circuit design, production efficiency and system reliability.

[0063] Further, such as Figure 3 As shown, the level divider module 1 includes a resistor PR1, a resistor PR2, a short-circuit PJ2 and a capacitor PC14, the first end of the short-circuit PJ2 is connected to a common node between the power output end of the DC-DC conversion module 2 and the load, the second end of the short-circuit PJ2 is connected to the first end of the capacitor PC14, the second end of the capacitor PC14 is connected to the first end of the resistor PR2, the second end of the resistor PR2 is grounded, the second end of the short-circuit PJ2 is connected to the first end of the resistor PR1, the second end of the resistor PR1 is connected to the first end of the resistor PR2, and the common node between the second end of the resistor PR1 and the first end of the resistor PR2 is connected to the feedback signal input end of the DC-DC conversion module 2.

[0064] In the present embodiment, the design of the level voltage divider module 1 constructs a stable voltage divider and filtering network through the reasonable connection of resistor PR1, resistor PR2, short-circuit PJ2 and capacitor PC14, which is used to generate the feedback signal of DC-DC conversion module 2 and realize the closed-loop control of the circuit. The first end of short-circuit PJ2 is directly connected to the common node between the power output terminal and the load of DC-DC conversion module 2, so as to introduce the output voltage signal and provide input for subsequent voltage divider and filtering. The second end of short-circuit PJ2 is connected to the first end of capacitor PC14 on the one hand, forming a filtering loop connected to the ground, wherein the second end of capacitor PC14 provides a discharge channel of high-frequency noise by grounding, thereby stabilizing the voltage divider signal and suppressing the voltage instability caused by transient fluctuations or electromagnetic interference. On the other hand, the second end of short-circuit PJ2 is also connected to the first end of resistor PR1, and the second end of resistor PR1 is connected to the first end of resistor PR2, forming a series voltage divider circuit, which is used to divide the input voltage proportionally, so as to generate a level signal adapted to the feedback signal input end of DC-DC conversion module 2. The second end of the resistor PR2 is grounded to provide a reference potential for the voltage divider network to ensure the stability of the output signal. The common node between the second end of the resistor PR1 and the first end of the resistor PR2 is connected to the feedback signal input end of the DC-DC conversion module 2 to transmit the divided signal to achieve real-time monitoring and adjustment of the output voltage. Through this connection method, the level voltage divider module 1 can not only divide the output voltage of the DC-DC conversion module 2 to a range suitable for the feedback requirement, but also filter the signal through the capacitor PC14 to improve the stability of the feedback signal, thereby ensuring that the output voltage of the DC-DC conversion module 2 can quickly respond to the adjustment requirements of external load changes or input voltage fluctuations, and ensure the stability and reliability of the overall operation of the circuit.

[0065] In summary, a stable level voltage divider module 1 can be formed by reasonably connecting the short-circuit PJ2 with the resistors PR1, PR2 and the capacitor PC14, which can effectively divide and filter the feedback signal, thereby enhancing the stability of the feedback signal and reducing the impact of external interference or transient fluctuations on circuit performance.

[0066] Further, such as Figure 3 As shown, the feedback adjustment unit 30 includes a resistor PR8 and a transistor Q1, the first end of the resistor PR8 is connected to a common node between the second end of the resistor PR1 and the first end of the resistor PR2, the second end of the resistor PR8 is connected to the first conduction end of the transistor Q1, the second conduction end of the transistor Q1 is grounded, and the controlled end of the transistor Q1 is connected to the enable signal output end of the scene mode stress module 4.

[0067] In this embodiment, this is only a schematic diagram of one of the feedback adjustment units 30. The resistors in other feedback adjustment units 30 are identified by PR+digital method, and the transistors are identified by Q+digital method. The above-mentioned feedback adjustment unit 30 realizes the dynamic adjustment function of the feedback voltage divider network through the connection between the resistor PR8 and the transistor Q1 to adapt to the voltage output requirements of different scenarios. The first end of the resistor PR8 is connected to the common node between the second end of the resistor PR1 and the first end of the resistor PR2. This connection point is the key node of the entire level voltage divider network, carrying the core feedback signal transmitted to the feedback signal input end of the DC-DC conversion module 2. The second end of the resistor PR8 is connected to the first conduction end of the transistor Q1 to form a series branch for dynamically controlling whether PR8 joins the voltage divider network. The second conduction end of the transistor Q1 is grounded. When Q1 is in the on state, the resistor PR8 will form a new parallel path with the level voltage divider module 1, thereby adjusting the voltage divider ratio, directly changing the level of the feedback signal, and affecting the output voltage of the DC-DC conversion module 2. The controlled end of transistor Q1 is connected to the enable signal output end of the scene mode stress module 4, which generates a stress enable signal according to the current power supply environment data and scene requirements to control the on or off state of Q1. When the scene mode stress module 4 activates Q1, PR8 is introduced into the voltage divider network, effectively reducing the voltage divider ratio, and adjusting the feedback signal to increase the output voltage of the DC-DC conversion module 2; when Q1 is cut off, PR8 is removed from the voltage divider network, the voltage divider ratio is restored to its original value, and the output voltage is adjusted accordingly. This design logic accurately controls the access state of PR8 and dynamically changes the voltage divider characteristics of the feedback signal, ensuring that the feedback adjustment unit 30 can adjust the output voltage in real time according to the scene requirements, significantly improving the flexibility and adaptability of the circuit, and at the same time, by simplifying the feedback path switching method, reducing the complexity and enhancing the reliability of the system.

[0068] In summary, the dynamic switching control of the feedback signal path can be achieved through the cooperation of the resistor PR8 and the transistor Q1 in the feedback adjustment unit 30, and the feedback path can be dynamically adjusted according to the stress enable signal output by the scene mode stress module 4, thereby achieving flexible adjustment of the feedback signal to meet the output voltage requirements in different scenarios.

[0069] Further, such as Figure 2-Figure 3 As shown, the DC-DC conversion module 2 includes a DC-DC chip PU1, an inductor PL1, a resistor PR6 and a resistor PR7. The start / stop enable signal input terminal of the DC-DC chip PU1 is connected to the enable signal output terminal of the power supply to control the start / stop state of the DC-DC chip PU1. The power input terminal of the DC-DC chip PU1 is connected to the power supply, the power output terminal of the DC-DC chip PU1 is connected to the first end of the inductor PL1, the second end of the inductor PL1 is connected to the load, the first end of the resistor PR6 is connected to the power supply, the second end of the resistor PR6 is connected to the first end of the resistor PR7, the second end of the resistor PR7 is grounded, the common node between the second end of the resistor PR6 and the first end of the resistor PR7 is connected to the power state signal output terminal of the DC-DC chip PU1, and the common node between the second end of the resistor PR6 and the first end of the resistor PR7 is used to output the power state signal after voltage division adjustment by the resistors PR6 and PR7 to adapt to the signal level required by the corresponding logic control element.

[0070] In this embodiment, the DC-DC conversion module 2 realizes the conversion of the input power supply, output regulation and power supply status indication functions through the synergistic effect of the DC-DC chip PU1, the inductor PL1, and the resistors PR6 and PR7. The start-stop enable signal input terminal of the DC-DC chip PU1 is connected to the enable signal output terminal of the power supply, and the start-stop state of the DC-DC chip PU1 can be controlled by an external signal, thereby realizing comprehensive management of the module working state. The power input terminal of the DC-DC chip PU1 is directly connected to the power supply to receive the input voltage, and its power output terminal is transmitted to the load through the first end of the inductor PL1 to provide a stable output voltage for the load. The second end of the inductor PL1 is connected to the load, and the voltage fluctuation is smoothed through its energy storage and filtering to ensure the stability of the output voltage. The first end of the resistor PR6 is connected to the power supply to receive the input power signal, and the second end thereof is connected to the first end of the resistor PR7 to form a voltage divider network, and the second end of the resistor PR7 is grounded to provide a reference potential for the voltage divider circuit. The common node between the second end of resistor PR6 and the first end of resistor PR7 is connected to the power status signal output end of DC-DC chip PU1 through a wire, which is responsible for providing the power status signal after voltage division adjustment. Through the voltage division effect of PR6 and PR7, the voltage signal output by the node is precisely adjusted and can adapt to the signal level requirements of the logic control element, which is used to indicate the current state of the power supply or trigger subsequent logic operations. The overall design ensures that the power status signal can accurately reflect the working state of the circuit and is compatible with the requirements of the subsequent control circuit through the precise matching of the voltage division network, thereby improving the intelligence and reliability of the system. At the same time, through the cooperation of the inductor and the voltage division network, the stability and consistency of the output voltage and status signal are ensured.

[0071] In summary, a voltage stabilizing circuit can be constructed by using the DC-DC chip PU1, inductor PL1, and resistors PR6 and PR7 included in the DC-DC conversion module 2, and the power status signal can be adjusted by voltage division in combination with the voltage divider network formed by PR6 and PR7, thereby adjusting the power status signal to a signal level that adapts to the requirements of the logic control element, thereby improving the adaptability and stability of the power signal in logic control.

[0072] like Figure 4 As shown, a feedback voltage dynamic regulation method is applied to a feedback voltage dynamic regulation circuit. The feedback voltage dynamic regulation method includes:

[0073] S10, acquiring power environment data, the power environment data including at least temperature data, battery power data, load current data and communication protocol status data, and matching the power environment data with a preset scene database to determine a target scene mode;

[0074] In this embodiment, the power supply environment data is collected in real time through sensors and detection modules, the temperature data can be monitored by thermistors or temperature sensors, the battery power data is obtained through voltage detection circuits, the load current data is extracted through current sampling resistors in combination with operational amplifiers, and the communication protocol status data reads the current protocol status through the MCU. After these data are input into the control module, they are matched one by one with the preset scene conditions in the scene database. The scene database pre-stores different scene modes and their associated environmental conditions, such as "high temperature protection mode" can correspond to the condition of temperature exceeding 80°C, and "low power consumption mode" can correspond to the state where the battery power is less than 20%. The matched target scene mode will be used for subsequent control logic, which can accurately identify the operating environment of the current power supply and trigger the corresponding adjustment process, thereby ensuring the adaptability of the power supply system in a variety of environments.

[0075] S20, controlling the scene mode stress module 4 to determine a corresponding impedance combination according to the target scene mode, generating a corresponding stress enable signal according to the impedance combination, and sending the stress enable signal to the corresponding feedback adjustment unit 30;

[0076] In this embodiment, the scene mode stress module 4 selects the optimal combination from the optional impedances of the feedback regulation unit 30 in combination with the voltage division requirements and accuracy requirements of the target scene mode. For example, in the "high temperature protection mode", the module will give priority to combinations with lower impedances to increase the voltage division ratio, thereby reducing the output voltage to reduce heat generation, while in the "heavy load mode", a higher impedance combination will be selected to increase the output voltage to meet the load requirements. The scene mode stress module 4 generates a corresponding enable signal through control logic, and the signal can be output through the GPIO of the MCU in the scene mode stress module 4 to control the conduction state of the switching element (such as MOSFET or transistor) in the feedback regulation unit 30. Through this implementation method, the feedback voltage divider network can be dynamically adjusted to accurately match different output voltage requirements, thereby effectively responding to diverse scene requirements.

[0077] S30, controlling the feedback adjustment unit 30 to be turned on based on the stress enable signal to form a corresponding voltage division network with the level voltage division module 1;

[0078] In this embodiment, after the feedback adjustment unit 30 receives the enable signal sent by the stress module, the internal switch element (such as transistor Q1 or MOSFET) is driven to turn on, and the selected feedback resistor (such as resistor PR8) is connected to the voltage divider network to form a new impedance combination with the basic resistors (such as resistor PR1 and resistor PR2) in the level voltage divider module 1. At this time, the total impedance and voltage divider ratio of the voltage divider network change, thereby generating a feedback signal that meets the scene requirements. For example, when the enable signal activates PR8, it is connected in parallel with the impedance of the level voltage divider module 1, reducing the total impedance, increasing the voltage divider ratio, and then realizing a dynamic increase in the output voltage. Through the flexible combination of the feedback adjustment unit 30, the dynamic adjustment of the feedback signal can be achieved without changing the hardware, which greatly improves the regulation efficiency and adaptability of the circuit.

[0079] S40, controlling the DC-DC conversion module 2 to obtain the feedback signal generated by the voltage divider network, dynamically determining the corresponding target voltage value according to the feedback signal, and adjusting the output voltage value of the DC-DC conversion module 2 in real time to make the output voltage value consistent with the target voltage value.

[0080] In this embodiment, the DC-DC conversion module 2 obtains the output signal of the voltage divider network in real time through its internal feedback control logic. The signal is transmitted to the internal error amplifier through the feedback input terminal of the DC-DC chip PU1 and compared with the target voltage value. When it is detected that the feedback signal deviates from the target value, the DC-DC chip PU1 adjusts the output voltage by adjusting its internal duty cycle or switching frequency. For example, when the feedback signal indicates that the actual voltage is lower than the target voltage, the DC-DC chip PU1 will increase the switching duty cycle and increase the output voltage to compensate for the error; otherwise, the duty cycle will be reduced to reduce the output voltage. This closed-loop control method can ensure that the output voltage always accurately and stably tracks the target voltage value, thereby meeting the different voltage requirements of the external load for the power supply and further improving the reliability and dynamic response capabilities of the system.

[0081] Furthermore, for example, in a high temperature environment, the temperature sensor detects that the temperature reaches 85°C, triggering the "high temperature protection mode" in the scene database. The scene mode stress module 4 generates a stress enable signal according to the mode, turns on the transistor Q1 in the feedback adjustment unit 30, and connects the resistor PR8 to the voltage divider network of the level divider module 1 to reduce the voltage divider ratio. The DC-DC chip PU1 receives the adjusted feedback signal through the feedback input terminal, detects that the feedback signal voltage increases, and deviates from the target voltage value. The DC-DC chip PU1 then adjusts the duty cycle of its internal switch and reduces the output voltage to the target value (for example, 3.3V) to reduce heat generation and protect the safe operation of the circuit. The entire process realizes real-time dynamic adjustment of the output voltage through the linkage of hardware and control logic.

[0082] In summary, by acquiring power environment data, matching these data with the preset scene database, the current target scene mode is identified; then, the scene mode stress module 4 determines the corresponding impedance combination according to the target scene mode, and generates a corresponding stress enable signal to be sent to the feedback adjustment unit 30; the feedback adjustment unit 30 selectively conducts according to the stress enable signal, and forms different voltage divider networks with the level voltage divider module 1, thereby adjusting the feedback signal; the DC-DC conversion module 2 obtains the feedback signal output by the voltage divider network in real time, dynamically determines the target output voltage value through the internal control logic, and adjusts the output voltage to make it consistent with the target voltage. Through this method, the automatic, multi-mode, and precise adjustment of the output voltage is realized, which can adapt to the needs of various complex scenes, avoids the cumbersome operation of manually adjusting the feedback resistor in the traditional circuit, and improves the flexibility, reliability and intelligence of the circuit.

[0083] In one embodiment, if Figure 5 As shown, in step S10, the step of matching the power environment data with the preset scene database to determine the target scene mode includes:

[0084] S101, determining a preset scene mode, and determining a scene priority corresponding to the preset scene mode;

[0085] In this embodiment, the preset scene mode is a set of predefined logical rules based on different environments and application requirements that the power supply will encounter during operation, such as "high temperature protection mode", "low power mode" or "heavy load mode", and each scene mode includes its triggering conditions and priorities. The scene priority is set by the default priority rule and adjusted in combination with the dynamic weight factor. For example, in the high temperature protection mode, the priority will be dynamically increased according to the severity of the temperature data. The determination of the priority enables the system to accurately select the most urgent or important scene mode when multiple scenarios meet the conditions at the same time, thereby optimizing the power supply response speed and the accuracy of the decision.

[0086] S102, matching the power environment data with the scene conditions stored in the preset scene mode one by one, and screening out the corresponding preliminary scene mode;

[0087] In this embodiment, the power environment data includes real-time parameters such as the currently collected temperature, battery power, load current, etc. These data are compared one by one with the trigger conditions of the preset scene modes. For example, the trigger condition of the "high temperature protection mode" is that the temperature is greater than 80°C, the condition of the "low power mode" is that the battery power is less than 20%, and the condition of the "heavy load mode" is that the load current exceeds 10A. By matching one by one, the system can filter out all scene modes that meet the conditions, form a preliminary scene mode set, and provide a basis for subsequent priority sorting. For example, when the current temperature is 85°C, the battery power is 15%, and the load current is 12A, the preliminary scene mode set will include high temperature protection mode, low power mode, and heavy load mode.

[0088] S103: Determine a target scene mode from each preliminary scene mode based on the scene priority.

[0089] In this embodiment, the system sorts the preliminary scene mode set according to the priority of each scene. For example, the high temperature protection mode has the highest priority, followed by the low power mode and the heavy load mode. The priority judgment combines the default priority of the scene and the dynamic weight factor of the real-time environmental data. For example, a temperature of 85°C will significantly increase the priority of the high temperature protection mode. Through sorting, the system selects the scene mode with the highest priority as the target scene mode. For example, under the above conditions, the high temperature protection mode is selected first, and the system will trigger subsequent logical operations accordingly, including adjusting the feedback path to reduce the power supply output voltage, so as to effectively respond to the current power supply operating environment and ensure the stability and safety of the circuit.

[0090] Furthermore, the dynamic update and expansion of the scene database can be achieved through an external input interface, such as receiving update instructions through communication protocols such as UART, SPI, and I2C, and writing new scene conditions or priority rules into the memory. In the specific implementation, the system can set a dedicated update mode. When an external input signal is detected to trigger an update operation, the current scene matching and priority calculation logic is suspended, and the new scene conditions are loaded into the scene database. At the same time, the integrity and consistency of the newly added or modified scene conditions are verified to ensure that they do not conflict with the existing scene rules. After the update is completed, the system recalculates the priorities of all scenes. The priority calculation is adjusted in combination with the latest environmental data and dynamic weight factors, and the re-sorted and saved to the scene database to ensure the timeliness and accuracy of the priority rules. The system can also record the operation log of each update to facilitate subsequent debugging and optimization. In addition, the extensibility of the scene database supports the addition of new scene modes at runtime. For example, the conditions, dynamic weight factors, and default priorities of the new scene mode are sent through an external interface. The system stores them and incorporates them into the priority sorting and matching process to achieve dynamic expansion of scene logic, meet different application requirements, and ensure the consistency and stability of the logic;

[0091] In summary, by setting preset scene modes and corresponding scene priorities, it is possible to achieve accurate matching of power environment data, screen out preliminary scene modes that meet the scene conditions, and determine the target scene mode based on priority rules, thereby improving the decision-making efficiency of the scene mode, avoiding unclear feedback path selection caused by conflicts in multiple scene conditions, and ensuring the accuracy and reliability of power regulation.

[0092] In one embodiment, if Figure 6 As shown, before step S102, that is, before the step of matching the power environment data with the scene conditions stored in the preset scene database one by one, it also includes:

[0093] S111, determining a matching confidence interval, wherein after the previous target scene mode is determined, generating a matching confidence interval corresponding to the previous target scene mode based on the determined confidence interval mapping relationship;

[0094] In this embodiment, the matching confidence interval is a threshold range pre-set according to the dynamic range of the power environment data and the triggering conditions of the scene mode, which is used to avoid frequent switching of scene modes due to slight fluctuations in data. For example, for the high temperature protection mode, the matching confidence interval can be set to 75°C to 85°C. When the temperature data is within this range, the new scene switching logic is not triggered. The confidence interval mapping relationship is dynamically generated based on the specific conditions of the previous target scene mode. For example, in the high temperature protection mode, the confidence intervals of the battery power and load current are also affected by the association to ensure the consistency of the overall logic. The system dynamically calculates the confidence interval of each key parameter based on the triggering conditions of the current target scene mode and the fluctuation range of the environmental data, for example, by setting the dynamic boundary by statistically analyzing the range of changes in historical data. This setting of the matching confidence interval can effectively reduce the frequency of scene mode switching and improve the stability and response efficiency of scene mode selection.

[0095] S121, judging whether the power environment data exceeds the matching confidence interval, if not, continuing to judge;

[0096] In this embodiment, the power environment data includes key parameters such as temperature, battery power, load current, etc. The system will monitor in real time whether these data exceed the matching confidence interval. For example, if the current temperature data remains within 80°C and meets the confidence interval of the high temperature protection mode, the system will continue to monitor without triggering a new matching operation. The judgment logic is completed by comparing the real-time collected data with the upper and lower limits of the confidence interval. When all data are within the confidence interval, the system keeps the existing scene mode unchanged to avoid frequent triggering of scene mode switching due to short-term fluctuations. This continuous judgment mechanism can significantly reduce the frequent operation of scene switching and improve the stability of system operation, especially in scenarios where the load fluctuations are large or the power environment data is updated frequently.

[0097] S131 , if yes, reset the conduction states of all feedback adjustment units 30 , and match the power environment data with the scene conditions stored in the preset scene mode one by one.

[0098] In this embodiment, when the power supply environment data exceeds the matching confidence interval, for example, when the temperature rises to 90°C and exceeds the confidence range of the high temperature protection mode, the system will immediately reset the conduction state of all feedback adjustment units 30 and restore the voltage divider network to the initial state. The reset operation is achieved by turning off the switching elements (such as transistors or MOSFETs) in all feedback adjustment units 30 to ensure that the voltage divider network returns to the default configuration to avoid interference with the new scene matching process due to the old feedback path. Subsequently, the system re-compares the current power supply environment data with the scene conditions in the preset scene database one by one. For example, when the temperature rises to 90°C and the load current exceeds 10A, the conditions of the high temperature protection mode and the heavy load mode will be triggered. By matching one by one, the system screens out the scene modes that meet the conditions and selects the new target scene mode according to the priority logic, thereby adjusting the feedback path to adapt to the new power demand. This reset and re-matching mechanism can ensure that the system responds quickly when the data exceeds the confidence interval, avoids scene logic disorder, and improves the accuracy and reliability of dynamic adjustment.

[0099] Furthermore, the matching confidence interval is determined based on the trigger conditions of the previous target scene mode and the range of historical data changes in the actual operating environment, combined with the dynamic fluctuation characteristics of the environmental data, and the corresponding confidence interval is generated through a mapping relationship. Specifically, the system first sets an initial range based on the trigger conditions of the target scene mode (such as temperature, battery power, and load current thresholds), and then dynamically adjusts the upper and lower limits of the confidence interval in combination with the statistical information of the runtime environment data, such as the mean, maximum value, minimum value, and fluctuation range in the recent period. For example, the maximum fluctuation amplitude of the most recent N sampling data is obtained by the sliding window method, and a certain margin value is superimposed or subtracted to form a dynamic confidence interval. In addition, the system can also introduce weight factors for each parameter to make the confidence interval for key parameters more stringent and the confidence interval for secondary parameters more relaxed, so as to improve the accuracy and robustness of the overall matching.

[0100] For example, in the high temperature protection mode, it is assumed that its triggering conditions are that the temperature is greater than 80°C and the battery power is greater than 30%. After detecting that the temperature rises to 85°C and the battery power is 35%, the system sets the high temperature protection mode as the target scene mode. Subsequently, based on the historical data of the temperature sensor, the system calculates that the temperature change range in the last 5 minutes is ±2°C. Taking into account that there will be short-term fluctuations in actual operation, the matching confidence interval is set to 83°C to 87°C. For the battery power parameter, the data of the last 10 samples show that its change range is ±3%, so the matching confidence interval is set to 32% to 38%. The dynamic confidence interval generated in this way can take into account the changing trend of the current operating environment and the scene triggering conditions, which not only ensures the stability of the scene mode selection, but also responds to significant changes in the environment in a timely manner.

[0101] In summary, by setting the matching confidence interval, the changes in the power supply environment data can be monitored in real time. When the power supply environment data exceeds the matching confidence interval, the reset operation of the feedback adjustment unit 30 is triggered, and the scene matching is re-executed to avoid false triggering of feedback adjustment caused by environmental data fluctuations or errors, thereby improving the stability of circuit operation and the adjustment accuracy.

[0102] In one embodiment, if Figure 7 As shown, in step S101, i.e., the step of determining the scene priority of each preliminary scene mode, it includes:

[0103] S1011. Determine the application system where the power source is directly applied;

[0104] In this embodiment, the application system to which the power supply is directly applied refers to the specific equipment or scenario served by the power supply, such as industrial automation equipment, consumer electronics products, or communication base stations. By identifying the application system, the operating characteristics and scenario requirements of the power supply can be clarified. For example, in industrial automation equipment, the power supply will need to cope with the operating characteristics of high load fluctuations, while in consumer electronics, more attention is paid to low power consumption and high efficiency. The system obtains information about the current application system through an external input interface (such as user selection, automatic detection, or protocol instructions) as the basis for loading the corresponding scene mode and priority rules. Such an identification process can ensure that the power supply system operates efficiently in different application scenarios and reduce unnecessary logic switching.

[0105] S1012, loading a preset scene mode and a default priority rule corresponding to the preset scene mode according to the application system, where the default priority rule includes at least a default priority and a dynamic priority weight factor;

[0106] In this embodiment, the application system to which the power supply is directly applied refers to the specific equipment or scenario served by the power supply, such as industrial automation equipment, consumer electronics products, or communication base stations. By identifying the application system, the operating characteristics and scenario requirements of the power supply can be clarified. For example, in industrial automation equipment, the power supply will need to cope with the operating characteristics of high load fluctuations, while in consumer electronics, more attention is paid to low power consumption and high efficiency. The system obtains information about the current application system through an external input interface (such as user selection, automatic detection, or protocol instructions) as the basis for loading the corresponding scene mode and priority rules. Such an identification process can ensure that the power supply system operates efficiently in different application scenarios and reduce unnecessary logic switching.

[0107] S1013, multiplying the power environment data and the dynamic priority weight factor to generate a corresponding environment priority;

[0108] In this embodiment, the environmental priority is generated by multiplying the real-time power environment data (such as temperature, battery power, and load current) by the dynamic priority weight factor. For example, assuming that the dynamic priority weight factor of the high temperature protection mode is 0.5, and the current temperature is 90°C, its environmental priority is 90×0.5=45. Similarly, the low power mode will have a weight factor of 0.3, and the current battery power is 20%, then its environmental priority is 20×0.3=6. Through this calculation method, the actual impact of environmental data on priority can be dynamically reflected, making the priority adaptable in different scenarios. For example, when the temperature changes significantly, the environmental priority of the high temperature protection mode will increase significantly, so that it will be selected by the system first.

[0109] S1014. Subtract the environment priority from the default priority to generate a corresponding scene priority.

[0110] In this embodiment, the scene priority is calculated by subtracting the environmental priority from the default priority. For example, the default priority of the high temperature protection mode is 50, and its environmental priority is 45, then the final scene priority is 50-45=5. Similarly, the default priority of the low power mode is 30, and its environmental priority is 6, then the final scene priority is 30-6=24. The lower the scene priority, the higher the urgency of the response. Through this calculation method, the system can automatically adjust the scene priority according to changes in the current environment. For example, in a high temperature environment, the priority of the high temperature protection mode is significantly reduced, thereby giving priority to triggering related logical operations, thereby achieving rapid protection and dynamic adjustment capabilities of the power supply. Finally, the system selects the scene mode with the lowest priority as the current target scene mode according to the ranking of the scene priorities, effectively improving the flexibility and reliability of the power supply operation.

[0111] Furthermore, the process of loading preset scene modes and their default priority rules is completed through the scene database and application system identification logic within the system. After the system determines the specific application system of the current power application, such as user selection, protocol instructions or device self-test identification results received through an external input interface, the system searches the scene database for scene mode groups and priority rules associated with the application system. The scene mode group includes multiple scene modes, each of which defines specific trigger conditions, such as a threshold range for temperature, battery power or load current; the default priority rule includes a default priority value and a dynamic priority weight factor, the latter of which determines the degree of influence of real-time environmental data on the scene priority. During the loading process, the system reads the corresponding scene mode group and priority rules from the scene database and stores them in the current operating environment, providing a basis for subsequent scene selection and dynamic adjustment.

[0112] For example, in the application system of the communication base station, the system identifies the application system as "communication base station power management". At this time, the system loads the scene mode group associated with the application system from the scene database, including "normal operation mode", "overload protection mode" and "low power energy saving mode". The default priority of "normal operation mode" is 10, and the dynamic priority weight factor is 0.1; the default priority of "overload protection mode" is 5, and the dynamic priority weight factor is 0.4; the default priority of "low power energy saving mode" is 8, and the dynamic priority weight factor is 0.3. These rules define the basic priority and weight factor of each mode. For example, the "overload protection mode" has a higher weight for load current, which is suitable for rapid response to sudden load increases; while the "low power energy saving mode" is mainly adjusted according to changes in battery power. After loading, these scene modes and priority rules enter the system's priority calculation and scene matching process to provide dynamic adjustment support for the operation of the communication base station.

[0113] In summary, according to the specific system scenario of the power application, the corresponding preset scene mode and priority rules can be loaded, and the scene priority can be adjusted in real time in combination with the dynamic priority weight factor, so that the system can dynamically optimize the priority according to the actual environmental changes, thereby ensuring that high-priority scene modes are given priority at critical moments, thereby improving the intelligence level and adaptability of feedback regulation.

[0114] In one embodiment, if Figure 8 As shown, in step S20, i.e., the step of controlling the scene mode stress module 4 to determine the corresponding impedance combination according to the target scene mode, the impedance combination includes a first impedance combination and a second impedance combination, and the step further includes:

[0115] S201, determining the voltage division requirement and accuracy requirement according to the target scene mode;

[0116] In this embodiment, the voltage division requirement refers to the voltage division ratio required to meet the feedback voltage requirement of the DC-DC conversion module 2 in the target scene mode, and the accuracy requirement refers to the allowable error range between the feedback voltage output by the voltage division network and the target feedback voltage. The system calculates the required voltage division ratio and accuracy requirements based on the trigger conditions of the target scene mode, such as temperature, battery power, or load current, combined with the voltage division parameters stored in the scene database. For example, in "low power mode", the voltage division requirement requires the feedback voltage to be 0.6V and the accuracy requirement to be ±0.02V. By determining these requirements, the system can provide clear standards for subsequent impedance selection and combination, thereby ensuring the stability and accuracy of the output voltage.

[0117] S202, obtaining the unit impedance value of each feedback adjustment unit 30, determining the unit impedance value closest to the voltage division requirement as the target impedance value, and determining the voltage division deviation allowable range of the target impedance value according to the accuracy requirement;

[0118] In this embodiment, the system obtains the impedance value of each unit, such as 10kΩ, 15kΩ or 20kΩ, by reading the impedance configuration of the feedback adjustment unit 30, and then compares it with the voltage division requirement, and selects the impedance value closest to the voltage division requirement as the target impedance value. Combined with the accuracy requirement, the system sets the voltage division deviation allowable range for the target impedance value. For example, if the voltage division requirement is 0.6V and the accuracy requirement is ±0.02V, if the voltage division output corresponding to the target impedance value is between 0.58V and 0.62V, it meets the voltage division deviation allowable range. This process can effectively reduce the adjustment complexity of the voltage division network and ensure the efficiency and accuracy of circuit adjustment by accurately screening the target impedance value.

[0119] S203, judging whether the difference between the voltage division requirement and the target impedance value falls within the allowable range of voltage division deviation, and if so, determining a first impedance combination, the first impedance combination only including the feedback adjustment unit 30 and the level voltage division module 1 corresponding to the allowable range of voltage division deviation;

[0120] In this embodiment, the system compares the actual voltage division output of the target impedance value with the voltage division requirement. For example, if the target voltage division requirement is 0.6V and the target impedance value output is 0.59V, the difference is 0.01V, which falls within the allowable voltage division deviation range of ±0.02V. The system will determine the first impedance combination. The first impedance combination only includes the feedback adjustment unit 30 and the level voltage division module 1 within the allowable voltage division deviation range. For example, only the adjustment unit corresponding to the target impedance value is activated to keep the voltage division network in a simple configuration. Through the first impedance combination, the target voltage division requirement can be met with minimal hardware adjustment, reducing circuit complexity and improving the response speed of feedback regulation.

[0121] S204 , if the voltage division deviation does not fall within the allowable range, determining a second impedance combination, where the second impedance combination includes a plurality of feedback adjustment units 30 and a level voltage division module 1 .

[0122] In this embodiment, when the target impedance value cannot meet the voltage division requirement, for example, the target voltage division requirement is 0.6V, and the voltage division output corresponding to the target impedance value is 0.65V, which exceeds the allowable range of ±0.02V, the system will form a second impedance combination by combining the impedances of multiple feedback adjustment units 30. The second impedance combination adjusts the voltage division ratio by connecting multiple impedance values ​​in parallel or in series, so that the final output falls within the accuracy range of the voltage division requirement. For example, 15kΩ and 30kΩ impedance units are connected in parallel to form an equivalent impedance of 10kΩ, thereby achieving more accurate voltage division regulation. Through the second impedance combination, the system can meet the voltage division requirements of complex scenarios under the flexible configuration of hardware resources, and further improve the adjustment ability and adaptability of the circuit.

[0123] Furthermore, the determination of the voltage division requirement and the accuracy requirement is based on the operating characteristics of the target scenario mode and the feedback voltage requirement of the DC-DC conversion module 2. The system first extracts the design value of the feedback voltage from the target scenario mode. For example, the "low power mode" requires the DC-DC output voltage to be reduced to save energy, and the feedback voltage needs to match the set value of the internal error amplifier. At this time, the calculated voltage division requirement is the target voltage division ratio. The accuracy requirement is set according to the sensitivity requirements of the target scenario for feedback regulation. For example, for high-precision scenarios, the allowable voltage division error range is smaller, while for low-precision scenarios, the allowable error range can be appropriately relaxed. Finally, the system comprehensively considers the target voltage division ratio and the stability of the actual operating environment, determines the voltage division requirement and accuracy requirements, and provides a benchmark for subsequent impedance selection.

[0124] For example, in a certain target scenario mode, the output voltage of the DC-DC conversion module 2 is required to be 3.3V, while the internal reference voltage is 0.6V. Through the voltage divider ratio formula R1 / (R1+R2)=Vfeedback / Voutput, the target voltage divider ratio is calculated to be 0.6 / 3.3≈0.1818. If the reference voltage in the voltage divider network needs to be kept within the error range of ±0.02V, the allowable voltage divider error range is 0.1818±(0.02 / 3.3)≈0.1818±0.00606. Based on this accuracy requirement, the system further combines the actual impedance value to set the voltage divider deviation allowable range of the target impedance value. For example, for a certain target value of the impedance combination, if its voltage divider output falls between 0.59V and 0.61V, it satisfies the deviation allowable range, and the system can select the impedance value as a candidate value for adjustment. This logic ensures the dual satisfaction of the voltage divider ratio and accuracy, and improves the efficiency and accuracy of feedback path selection.

[0125] In summary, according to the voltage division requirements and accuracy requirements of the target scene mode, combined with the impedance value of the feedback adjustment unit 30, a single target impedance value that meets the accuracy requirements can be preferentially selected to form a first impedance combination, and when the target impedance value cannot meet the requirements, multiple feedback adjustment units 30 can be dynamically combined to form a second impedance combination, thereby ensuring that the voltage division network can meet the target voltage requirements with minimal deviation, thereby improving the flexibility and accuracy of the feedback network.

[0126] In one embodiment, if Fig. 9 As shown, in step S204, that is, if the voltage division deviation does not fall within the allowable range, the step of determining the second impedance combination includes:

[0127] S2041, determining corresponding associated impedance values ​​according to the target impedance value, and then determining a combination scheme after the target impedance value is combined with each associated impedance value;

[0128] In this embodiment, the associated impedance value refers to the impedance value of other feedback adjustment units 30 that can adjust the voltage divider ratio by combining in series or in parallel with the target impedance value. For example, the system first screens out the target impedance value, such as 10kΩ, from the feedback adjustment unit 30, and then looks for associated impedance values ​​that can optimize the voltage divider ratio by combination, such as 20kΩ and 30kΩ. By calculating the target impedance value in series or in parallel with these associated impedance values, the system generates a plurality of possible combination schemes, each corresponding to an equivalent impedance value. The selection of the associated impedance value not only needs to meet the adjustment requirements of the target impedance value, but also needs to consider the actual stability and error range of the voltage divider network. This process can flexibly utilize multiple impedance resources in the feedback adjustment unit 30, expand the adjustment capability of the system, and improve the matching voltage divider requirements.

[0129] S2042, calculating the combined impedance value of each combination scheme;

[0130] In this embodiment, the system calculates each combination of the target impedance value and the associated impedance value to obtain the combined impedance value. The specific calculation formula is based on the rules of series or parallel resistors. For example, for a series combination, the combined impedance value is the sum of the two impedances; for a parallel combination, the combined impedance value is the reciprocal of the sum of their reciprocals. For example, if the target impedance value is 10kΩ and the associated impedance value is 20kΩ, then the combined impedance value after the two are connected in series is 30kΩ, and the combined impedance value after the two are connected in parallel is

[0131] 1 / (1 / 10kΩ+1 / 20kΩ)≈6.67kΩ1 / (1 / 10kΩ+1 / 20kΩ)≈6.67kΩ1 / (1 / 10kΩ+1 / 20kΩ)≈6.67kΩ

[0132] By calculating all the combinations one by one, the system can obtain a complete set of equivalent impedance values, providing a basis for the subsequent selection of the optimal impedance combination. This one-by-one calculation method can ensure the comprehensiveness of the combination plan while reducing the possibility of omissions or misselections.

[0133] S2043. If the difference between the voltage division requirement and one of the combined impedance values ​​falls within the allowable voltage division deviation range, the feedback adjustment unit 30 corresponding to the combined impedance value is determined, and then a second impedance combination is determined according to the feedback adjustment unit 30 corresponding to the combined impedance value.

[0134] In this embodiment, the system compares the combined impedance values ​​of all combination schemes with the voltage division requirement, calculates the difference, and if the difference falls within the allowable range of voltage division deviation, it is determined that the combination scheme meets the voltage division requirement. For example, if the voltage division requirement is 0.6V, the corresponding impedance value is 10kΩ, but the actual single impedance value cannot meet the requirement, and it is found through calculation that the impedance value of the parallel combination of the target impedance value 10kΩ and the associated impedance value 20kΩ is 6.67kΩ, and its corresponding voltage division output falls within the allowable error range (such as 0.58V to 0.62V), then the system selects the combination scheme as the optimal solution. Subsequently, the system determines the feedback adjustment unit 30 corresponding to the combination scheme, and forms a second impedance combination by activating these units, thereby adjusting the output voltage of the voltage division network. This logic ensures that when a single impedance value cannot meet the demand, the system flexibly adjusts the feedback path through a combination method to achieve accurate matching of the voltage division network, thereby improving the regulation ability and scene adaptability of the circuit.

[0135] In summary, through the calculation of the combination scheme of the target impedance value and the associated impedance value, it is possible to accurately evaluate whether the impedance values ​​after each combination meet the voltage division requirements, give priority to the combination scheme that meets the allowable deviation range, and lock the corresponding feedback adjustment unit 30 to form a second impedance combination, thereby realizing dynamic optimization of the voltage division network in complex scenarios and further improving the accuracy and efficiency of output voltage regulation.

[0136] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0137] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such 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, and should all be included in the protection scope of the present invention.

Claims

1. A feedback voltage dynamic regulation circuit, characterized in that: The feedback voltage dynamic regulation circuit comprises a level voltage divider module (1), a DC-DC conversion module (2), a dynamic feedback regulation module (3) and a scene mode stress module (4); the dynamic feedback regulation module (3) comprises a plurality of feedback regulation units (30); a power supply input end of the DC-DC conversion module (2) is connected to a power supply; a power supply output end of the DC-DC conversion module (2) is connected to a load; a common node between the power supply output end of the DC-DC conversion module (2) and the load is connected to a power supply signal input end of the level voltage divider module (1); a feedback signal output end of the level voltage divider module (1) is connected to a feedback signal input end of the DC-DC conversion module (2); The feedback signal regulating end of the pressure module (1) is respectively connected to the power signal input end of each feedback regulating unit (30), the enable signal input end of each feedback regulating unit (30) is connected to the enable signal output end corresponding to the scene mode stress module (4), the scene mode stress module (4) is used to generate a corresponding stress enable signal according to the determined scene mode, and then send the stress enable signal to the corresponding feedback regulating unit (30), and the feedback regulating unit (30) is used to control its own conduction state according to the stress enable signal to form different voltage dividing networks, so that the feedback signal input end of the DC-DC conversion module (2) receives different feedback signals through different voltage dividing networks; The level voltage dividing module (1) comprises a resistor PR1, a resistor PR2, a short-circuit PJ2 and a capacitor PC14, wherein a first end of the short-circuit PJ2 is connected to a common node between a power supply output end of the DC-DC conversion module (2) and a load, a second end of the short-circuit PJ2 is connected to a first end of the capacitor PC14, a second end of the capacitor PC14 is connected to a first end of the resistor PR2, a second end of the resistor PR2 is grounded, a second end of the short-circuit PJ2 is connected to a first end of the resistor PR1, a second end of the resistor PR1 is connected to a first end of the resistor PR2, and a common node between the second end of the resistor PR1 and the first end of the resistor PR2 is connected to a feedback signal input end of the DC-DC conversion module (2).

2. A feedback voltage dynamic regulation circuit according to claim 1, characterized in that: The feedback adjustment unit (30) comprises a resistor PR8 and a transistor Q1, wherein the first end of the resistor PR8 is connected to a common node between the second end of the resistor PR1 and the first end of the resistor PR2, the second end of the resistor PR8 is connected to the first conduction end of the transistor Q1, the second conduction end of the transistor Q1 is grounded, and the controlled end of the transistor Q1 is connected to the enable signal output end of the scene mode stress module (4).

3. The feedback voltage dynamic regulation circuit according to claim 1, characterized in that: The DC-DC conversion module (2) comprises a DC-DC chip PU1, an inductor PL1, a resistor PR6 and a resistor PR7, the start / stop enable signal input terminal of the DC-DC chip PU1 is connected to the enable signal output terminal of the power supply to control the start / stop state of the DC-DC chip PU1, the power input terminal of the DC-DC chip PU1 is connected to the power supply, the power output terminal of the DC-DC chip PU1 is connected to the first terminal of the inductor PL1, the second terminal of the inductor PL1 is connected to the load, the first terminal of the resistor PR6 is connected to the power supply, the second terminal of the resistor PR6 is connected to the first terminal of the resistor PR7, the second terminal of the resistor PR7 is grounded, the common node between the second terminal of the resistor PR6 and the first terminal of the resistor PR7 is connected to the power state signal output terminal of the DC-DC chip PU1, and the common node between the second terminal of the resistor PR6 and the first terminal of the resistor PR7 is used to output the power state signal after voltage division adjustment by the resistor PR6 and the resistor PR7 to adapt to the signal level required by the corresponding logic control element.

4. A feedback voltage dynamic regulation method, applied to a feedback voltage dynamic regulation circuit as claimed in any one of claims 1 to 3, characterized in that: The feedback voltage dynamic regulation method comprises: Acquire power environment data, the power environment data including at least temperature data, battery power data, load current data and communication protocol status data, and match the power environment data with a preset scene database to determine a target scene mode; Controlling the scene mode stress module (4) to determine a corresponding impedance combination according to the target scene mode, generating a corresponding stress enable signal according to the impedance combination, and sending the stress enable signal to a corresponding feedback adjustment unit (30); Controlling the feedback adjustment unit (30) to be turned on based on the stress enable signal to form a corresponding voltage division network with the level voltage division module (1); The DC-DC conversion module (2) is controlled to obtain a feedback signal generated by the voltage divider network, a corresponding target voltage value is dynamically determined according to the feedback signal, and an output voltage value of the DC-DC conversion module (2) is adjusted in real time so that the output voltage value is consistent with the target voltage value.

5. The method for dynamically adjusting feedback voltage according to claim 4, characterized in that: The step of matching the power environment data with a preset scene database to determine a target scene mode includes: Determining a preset scene mode, and determining a scene priority corresponding to the preset scene mode; Match the power environment data with the scene conditions stored in the preset scene mode one by one, and select the corresponding preliminary scene mode; Based on the scene priorities, a target scene mode is determined in each of the preliminary scene modes.

6. The method for dynamically adjusting feedback voltage according to claim 5, characterized in that: Before the step of matching the power environment data with the scene conditions stored in the preset scene database one by one, the method further includes: Determining a matching confidence interval, wherein after the previous target scene mode is determined, generating a matching confidence interval corresponding to the previous target scene mode based on the determined confidence interval mapping relationship; Determine whether the power environment data exceeds the matching confidence interval, and if not, continue to determine; If so, the conduction states of all the feedback adjustment units (30) are reset, and the power environment data is matched one by one with the scene conditions stored in the preset scene mode.

7. The method for dynamically adjusting feedback voltage according to claim 5, characterized in that: The step of determining a preset scene mode and determining a scene priority corresponding to the preset scene mode includes: Determine the application system where the power supply is directly applied; Loading a preset scene mode according to the application system, and a default priority rule corresponding to the preset scene mode, wherein the default priority rule includes at least a default priority and a dynamic priority weight factor; Multiplying the power environment data and the dynamic priority weight factor to generate a corresponding environment priority; The environment priority is subtracted from the default priority to generate a corresponding scene priority.

8. The method for dynamically adjusting feedback voltage according to claim 7, characterized in that: In the step of controlling the scene mode stress module (4) to determine the corresponding impedance combination according to the target scene mode, the impedance combination includes a first impedance combination and a second impedance combination, and the step further includes: Determining the voltage division requirement and accuracy requirement according to the target scene mode; Acquiring the unit impedance value of each feedback adjustment unit (30), determining the unit impedance value closest to the voltage division requirement as the target impedance value, and determining the voltage division deviation allowable range of the target impedance value according to the accuracy requirement; Determining whether the difference between the voltage division requirement and the target impedance value falls within the voltage division deviation allowable range, and if so, determining a first impedance combination, the first impedance combination only comprising a feedback adjustment unit (30) corresponding to the voltage division deviation allowable range and the level voltage division module (1); If it does not fall within the voltage division deviation allowable range, a second impedance combination is determined, wherein the second impedance combination comprises a plurality of feedback adjustment units (30) and the level voltage division module (1).

9. The method for dynamically adjusting feedback voltage according to claim 8, characterized in that: If the voltage does not fall within the allowable range of voltage division deviation, the step of determining a second impedance combination includes: Determine the corresponding associated impedance value according to the target impedance value, and then determine a combination scheme after the target impedance value is combined with each of the associated impedance values; Calculate the combined impedance value of each combination scheme; If the difference between the voltage division requirement and one of the combined impedance values ​​falls within the voltage division deviation allowable range, a feedback adjustment unit (30) corresponding to the combined impedance value is determined, and then a second impedance combination is determined based on the feedback adjustment unit (30) corresponding to the combined impedance value.

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