Dynamic controllable constant voltage source circuit and electronic equipment

Abstract

The invention relates to the technical field of electronic equipment, in particular to a dynamic controllable constant voltage source circuit and electronic equipment. The dynamic controllable constant voltage source circuit comprises a control module, a power supply module, an output driving module and an output acquisition module. The control module is used for realizing output control of the controllable constant voltage source circuit; the power supply module is used for outputting a driving power supply signal according to the control signal received from the control module; the output driving module is used for outputting a constant-voltage power supply signal meeting a target voltage value, and a preset voltage difference is kept between the constant-voltage power supply signal and the driving power supply signal; and the output acquisition module is used for acquiring the constant-voltage power supply signal output by the controllable constant-voltage source circuit and adjusting the output driving module according to a comparison result of the constant-voltage source signal and a target voltage value so as to enable the constant-voltage power supply signal to be matched with the target voltage value. The dynamic controllable constant voltage source circuit can improve the driving energy efficiency of a controllable source to a product, optimize the design volume of the product and reduce the production cost of the product.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a dynamically controllable constant voltage source circuit and electronic equipment. Background Art

[0002] A relay is an electrical switching device used to control the switch of a circuit. Its working principle is to use the effect of an electromagnet. When the input current passes through the coil, the electromagnet generates a magnetic field, which attracts or releases the mechanical contacts connected to it, thereby opening or closing the circuit. Relays can be applied to practical technologies such as automation control, protection circuits, signal transmission, and electrical systems. They have functions such as electrical isolation, high reliability, and high-power load control. With these characteristics, relays play an important role in many fields such as industrial control, automotive electronics, and home appliances.

[0003] With the vigorous development of new energy vehicles, the requirements for the reliability of on-board relays are getting higher and higher. Correspondingly, the increase in the demand for relay applications has also driven the demand for relay testers, which should be able to quickly and accurately detect various electrical parameters of relays, including coil resistance, pull-in voltage, release voltage, reverse peak voltage, whether a diode is connected in parallel, etc.

[0004] In the related technology, the existing relay tester coil power supply adopts a controllable constant voltage source technology constructed by DAC (digital-to-analog converter) + MOS (field effect transistor) + multi-stage high-power transistor + OPA (operational amplifier). That is, the target voltage value is output by DAC to the reverse input end of OPA according to a certain ratio, OPA drives MOS, and the output of MOS drives multi-stage high-power transistors. The output voltage of the transistor (i.e., the target voltage) is connected to the in-phase input end of OPA, thereby forming a constant voltage control closed loop.

[0005] However, the applicant has found that the current driving scheme of the relay tester has the following technical problems:

[0006] In various application scenarios, existing relay testers have the defects of low energy efficiency, large product size and high configuration cost. Summary of the invention

[0007] Based on this, it is necessary to provide a dynamic controllable constant voltage source circuit and electronic equipment that can improve the driving energy efficiency of the controllable source for the product, optimize the product design volume, reduce the product production cost, and improve the accuracy of relay testing.

[0008] The present invention provides a dynamically controllable constant voltage source circuit from a first aspect, comprising:

[0009] A control module, used for receiving external instructions to determine the target voltage value required to be output by the constant voltage source circuit, and realizing output control of the controllable constant voltage source circuit;

[0010] A power module connected to the control module, the power module is controlled by the control module, and is used to output a driving power signal according to a control signal received from the control module;

[0011] an output driving module, connected to the power module, and configured to perform constant voltage output under the drive of the driving power signal, output a constant voltage power signal that meets the target voltage value, and maintain a preset voltage difference between the constant voltage power signal and the driving power signal;

[0012] An output acquisition module is connected to the output drive module, the control module and the output circuit of the controllable constant voltage source circuit, and is used to collect the constant voltage power supply signal output by the controllable constant voltage source circuit, and adjust the output drive module according to the comparison result between the constant voltage source signal and the target voltage value so that the constant voltage power supply signal matches the target voltage value.

[0013] In one embodiment, the power module comprises:

[0014] A step-down control unit, used for performing step-down conversion on the DC source signal to obtain the driving power supply signal;

[0015] The voltage division regulating unit is connected to the voltage reduction control unit and is used for collecting the voltage division of the driving power supply signal to realize feedback regulation of the driving power supply signal.

[0016] In one embodiment, the power module further includes:

[0017] The voltage stabilization auxiliary unit is arranged between the voltage reduction control unit and the voltage division regulating unit, and is used for performing voltage stabilization processing on the signal transmitted between the voltage reduction control unit and the voltage division regulating unit.

[0018] In one embodiment, the voltage stabilization auxiliary unit includes:

[0019] A first switch tube, a second switch tube and an inductor, wherein the first switch tube is controlled by the step-down control unit and is used to connect the DC source signal with the inductor, and the second switch tube is controlled by the step-down control unit and is used to connect the ground signal with the inductor.

[0020] In one embodiment, the output driver module includes:

[0021] An amplifier unit, wherein the input stage of the amplifier unit is connected to the constant voltage power supply signal, the output stage outputs the driving power supply signal, and the amplifier unit is used to maintain the voltage difference between the constant voltage power supply signal and the driving power supply signal.

[0022] In one embodiment, the output acquisition module includes:

[0023] A feedback regulation unit, wherein the feedback regulation unit takes the constant voltage power supply signal and the reference voltage signal as input, and is used to output a regulation signal according to a comparison result between the constant voltage power supply signal and the reference voltage signal, wherein the output regulation signal is used to regulate the constant voltage power supply signal to the target voltage value through feedback regulation.

[0024] In one embodiment, the control module includes:

[0025] A control unit, configured to receive the external instruction and determine the target voltage value based on a preset programmable control logic in response to the acquisition of the external instruction;

[0026] The conversion unit is connected to the control unit and is used to receive the target voltage value and output the corresponding reference voltage signal and a driving control signal for the power module according to the target voltage value.

[0027] In one embodiment, the control module further includes:

[0028] A transmission unit is provided between the internal functional units of the control module and is used to realize signal transmission between the internal functional units.

[0029] In one of the embodiments, the transmission unit is implemented based on an isolated SPI bus, and the conversion unit is implemented based on a digital-to-analog converter.

[0030] The present invention provides an electronic device from a second aspect, comprising a dynamically controllable constant voltage source circuit according to any one of the first aspects.

[0031] The above-mentioned dynamically controllable constant voltage source circuit and electronic device can achieve the following beneficial effects corresponding to the technical problems raised in the background technology by deducing the technical features:

[0032] The present application provides a dynamically controllable constant voltage source circuit, including a control module, a power module, an output drive module and an output acquisition module. Among them: the control module is used to receive external instructions to determine the target voltage value required to be output by the constant voltage source circuit, and realize the output control of the controllable constant voltage source circuit; the power module is connected to the control module, the power module is controlled by the control module, and is used to output a driving power signal according to the control signal received from the control module; the output drive module is connected to the power module, and is used to output a constant voltage under the drive of the driving power signal, and output a constant voltage power signal that meets the target voltage value, and a preset voltage difference is maintained between the constant voltage power signal and the driving power signal; the output acquisition module is connected to the output drive module, the control module and the output circuit of the controllable constant voltage source circuit, and is used to collect the constant voltage power signal output by the controllable constant voltage source circuit, and adjust the output drive module according to the comparison result between the constant voltage source signal and the target voltage value, so that the constant voltage power signal matches the target voltage value. During implementation, the control module obtains the target voltage value of the output voltage actually required by the load, thereby controlling the power module to output the driving power signal. The output driving module outputs the constant voltage power signal under the power supply and drive of the driving power signal. A specific voltage difference is maintained between the constant voltage power signal and the driving power signal in the output, so that the system power consumption can be effectively controlled. In this way, the high-efficiency working state leads to lower heat generation, which reduces the system's demand for the heat dissipation module, thereby reducing the product volume and design cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram of a circuit structure of a dynamically controllable constant voltage source circuit in an embodiment of the present application;

[0035] Figure 2 This is a schematic diagram of the structure of a power module in one embodiment of the present application;

[0036] Figure 3 This is a structural diagram of an output drive module in an embodiment of the present application;

[0037] Figure 4 This is a schematic diagram of the structure of an output acquisition module in an embodiment of the present application;

[0038] Figure 5 Schematic diagram of the structure of a control module in one embodiment of the present application.

[0039] Explanation of the accompanying drawings: 100, control module; 110, control unit; 120, conversion unit; 130, transmission unit; 200, power supply module; 210, step-down control unit; 220, voltage division adjustment unit; 230, voltage stabilization auxiliary unit; 300, output drive module; 310, amplifier unit; 400, output acquisition module; 410, feedback adjustment unit. DETAILED DESCRIPTION

[0040] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0042] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0043] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0044] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0045] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0046] This application is made by the inventor based on the recognition and research of the following issues:

[0047] With the vigorous development of new energy vehicles, the requirements for the reliability of on-board relays are getting higher and higher. Correspondingly, the increase in the demand for relay applications has also driven the demand for relay testers, which should be able to quickly and accurately detect various electrical parameters of relays, including coil resistance, pull-in voltage, release voltage, reverse peak voltage, whether a diode is connected in parallel, etc.

[0048] In the related technology, the existing relay tester coil power supply adopts a controllable constant voltage source technology constructed by DAC (digital-to-analog converter) + MOS (field effect transistor) + multi-stage high-power transistor + OPA (operational amplifier). That is, the target voltage value is output by DAC to the reverse input end of OPA according to a certain ratio, OPA drives MOS, and the output of MOS drives multi-stage high-power transistors. The output voltage of the transistor (i.e., the target voltage) is connected to the in-phase input end of OPA, thereby forming a constant voltage control closed loop.

[0049] However, the applicant has found that the current driving scheme of the relay tester has the following technical problems:

[0050] In various application scenarios, existing relay testers have the defects of low energy efficiency, large product size and high configuration cost.

[0051] Based on this, an embodiment of the present application provides a dynamically controllable constant voltage source circuit and an electronic device.

[0052] In one embodiment, it can be Figure 1 As shown, the present application provides a dynamically controllable constant voltage source circuit, including a control module 100 , a power module 200 , an output driving module 300 and an output acquisition module 400 .

[0053] The control module 100 is used to receive external instructions to determine the target voltage value V2' required to be output by the constant voltage source circuit, and to implement output control of the controllable constant voltage source circuit.

[0054] For example, the control module 100 may be implemented by an editable control circuit, which may refer to a circuit for automatically controlling and operating various electrical devices and systems. The control circuit may control output signals (such as starting and stopping of devices such as motors and lights) according to input signals (such as sensor output or switch status).

[0055] The power module 200 is connected to the control module 100 , and the power module 200 is controlled by the control module 100 , and is used to output a driving power signal V1 according to a control signal received from the control module 100 .

[0056] For example, the power module 200 may be a dynamically adjustable switching power supply, which may refer to a power supply device that can automatically adjust the output voltage or current according to load changes or control signals to meet different application requirements.

[0057] Among them, the output driving module 300 is connected to the power supply module 200, and is used to perform constant voltage output under the drive of the driving power signal V1, and output a constant voltage power signal V2 that meets the target voltage value, and a preset voltage difference is maintained between the constant voltage power signal V2 and the driving power signal V1.

[0058] Exemplarily, the output driving module 300 may be implemented by an output driving circuit, which may refer to a driving circuit for converting an input signal into a signal required by a load according to application requirements.

[0059] Among them, the output acquisition module 400 is connected to the output driving module 300, the control module 100 and the output circuit of the controllable constant voltage source circuit, and is used to collect the constant voltage power supply signal V2 output by the controllable constant voltage source circuit, and adjust the output driving module 300 according to the comparison result between the constant voltage source signal V2 and the target voltage value V2', so that the constant voltage power supply signal V2 matches the target voltage value V2'.

[0060] Exemplarily, the output acquisition module 400 can be implemented by an output collection circuit, which can refer to a circuit that collects output signals and feeds them back to the input end for monitoring, control or further processing. Through the output collection circuit, the output signal can be fed back to the input for adjustment and correction, forming a closed-loop control to enhance the stability and response speed of the system.

[0061] By implementing the above-mentioned dynamically controllable constant voltage source circuit, the following beneficial effects can be achieved:

[0062] The present application provides a dynamically controllable constant voltage source circuit, including a control module 100 , a power module 200 , an output driving module 300 and an output acquisition module 400 . Wherein: the control module 100 is used to receive external instructions to determine the target voltage value required to be output by the constant voltage source circuit, and to realize the output control of the controllable constant voltage source circuit; the power supply module 200 is connected to the control module 100, the power supply module 200 is controlled by the control module 100, and is used to output a driving power supply signal according to the control signal received from the control module 100; the output driving module 300 is connected to the power supply module 200, and is used to perform constant voltage output under the drive of the driving power supply signal, and output a constant voltage power supply signal that meets the target voltage value, and a preset voltage difference is maintained between the constant voltage power supply signal and the driving power supply signal; the output acquisition module 400 is connected to the output driving module 300, the control module 100 and the output circuit of the controllable constant voltage source circuit, and is used to collect the constant voltage power supply signal output by the controllable constant voltage source circuit, and adjust the output driving module 300 according to the comparison result between the constant voltage source signal and the target voltage value, so that the constant voltage power supply signal matches the target voltage value. In implementation, the control module 100 obtains the target voltage value of the output voltage actually required by the load, thereby controlling the power module 200 to output the driving power signal, and the output driving module 300 outputs the constant voltage power signal under the power supply and drive of the driving power signal. A specific voltage difference is maintained between the constant voltage power signal and the driving power signal in the output, so that the system power consumption can be effectively controlled. In this way, the high-efficiency working state leads to lower heat generation, which reduces the system's demand for the heat dissipation module, thereby reducing the product volume and design cost.

[0063] In one embodiment, the Figure 2 As shown, the power module 200 includes: a voltage reduction control unit 210 and a voltage division adjustment unit 220 .

[0064] The step-down control unit 210 is used to step-down the DC source signal to obtain the driving power signal;

[0065] The voltage division regulating unit 220 is connected to the voltage reduction control unit 210 and is used for collecting the voltage division of the driving power supply signal to realize feedback regulation of the driving power supply signal.

[0066] In this embodiment, the specific composition of the power module 200 includes a step-down control unit 210 and a voltage divider adjustment unit 220, wherein the step-down control unit 210 as a DC-DC step-down controller can realize the step-down conversion design of the system, thereby maintaining the stability of the output voltage when the load changes and the input voltage fluctuates, and the voltage divider adjustment unit 220 can realize feedback adjustment of the output voltage by collecting the voltage divider of the output signal, thereby further improving the flexibility of system application.

[0067] In one embodiment, the Figure 2 As shown, the power module 200 further includes a voltage stabilization auxiliary unit 230 .

[0068] The voltage stabilization auxiliary unit 230 is disposed between the voltage reduction control unit 210 and the voltage division regulating unit 220 , and is used for performing voltage stabilization processing on the signal transmitted between the voltage reduction control unit 210 and the voltage division regulating unit 220 .

[0069] In this embodiment, the specific composition of the power module 200 also includes a voltage stabilization auxiliary unit 230. As a peripheral device of the power module 200, the voltage stabilization auxiliary unit 230 can perform voltage stabilization processing on the signal transmitted between the voltage step-down control unit 210 and the voltage divider adjustment unit 220, thereby enhancing the smoothness of the signal within the power module 200, reducing voltage fluctuations, and improving signal quality.

[0070] In one embodiment, the Figure 2 As shown, the voltage stabilization auxiliary unit 230 includes:

[0071] A first switch tube Q1, a second switch tube Q2 and an inductor L1, wherein the first switch tube Q1 is controlled by the step-down control unit 210 and is used to connect the DC source signal to the inductor L1, and the second switch tube Q2 is controlled by the step-down control unit 210 and is used to connect the ground signal to the inductor L1.

[0072] Specifically, the step-down control unit 210 may be a synchronous step-down DC / DC controller U1, which divides the driving power signal V1 output by the power module 200 through a resistor network composed of R1 and R2 and then introduces the result into the feedback pin (FB) of U1, and further introduces a driving control signal V3 into the feedback pin through a resistor R3, so that the driving power signal V1 can be adjusted by changing the driving control signal V3.

[0073] In this embodiment, the specific device composition of the voltage stabilization auxiliary unit 230 includes a first switch tube, a second switch tube and an inductor, wherein the first switch tube serves as a high-side switch tube, and the second switch tube serves as a low-side switch tube. The inductor is used to store energy and smooth the output current during the step-down conversion process. In cooperation with the implementation, it helps to improve the energy efficiency and stability of the step-down DC-DC conversion.

[0074] In one embodiment, if Figure 3 As shown, the output driving module 300 includes an amplifier unit 310 .

[0075] The input stage of the amplifier unit 310 is connected to the constant voltage power signal V2, and the output stage outputs the driving power signal V1. The amplifier unit 310 is used to maintain the voltage difference between the constant voltage power signal V2 and the driving power signal V1.

[0076] In this embodiment, by providing the amplifier unit 310, the voltage difference is maintained through the power operational amplifier, which helps to improve the energy efficiency of the system.

[0077] In one embodiment, the Figure 4 As shown, the output acquisition module 400 includes: a feedback adjustment unit 410.

[0078] Among them, the feedback adjustment unit 410 takes the constant voltage power supply signal V2 and the reference voltage signal V5 as input, and is used to output the adjustment signal V4 according to the comparison result between the constant voltage power supply signal V2 and the reference voltage signal V5, and the output adjustment signal V4 is used to adjust the constant voltage power supply signal V2 to the target voltage value V2' through feedback adjustment.

[0079] Specifically, after setting the reference voltage signal V5, the constant voltage power supply signal V2 continues to rise from zero potential. When the constant voltage power supply signal V2 is lower than the target voltage value V2', the in-phase input terminal of the operational amplifier U5 is greater than the reverse input terminal. Due to the negative feedback characteristics, the output adjustment signal V4 voltage continues to rise, thereby driving the constant voltage power supply signal V2 output by the above-mentioned operational amplifier U7 to rise; when the constant voltage power supply signal V2 is higher than the target voltage value V2', the in-phase input terminal of the operational amplifier U5 is less than the reverse input terminal, and the output adjustment signal V4 voltage begins to decrease, thereby driving the constant voltage power supply signal V2 of the operational amplifier U7 to decrease. Therefore, after the reference voltage signal is set, the constant voltage power supply signal V2 will eventually stabilize at the target voltage value V2' in proportion, realizing a closed feedback loop.

[0080] In this embodiment, the constant voltage power supply signal is stabilized to a target voltage value through a feedback regulation mechanism, thereby achieving adjustable output of the system, which helps to improve the flexibility of system application.

[0081] In one embodiment, the Figure 5 As shown, the control module 100 includes a control unit 110 and a conversion unit 120 .

[0082] The control unit 110 is used to receive the external instruction, and in response to the acquisition of the external instruction, determine the target voltage value V2' based on a preset programmable control logic.

[0083] The conversion unit 120 is connected to the control unit 110 , and is used to receive the target voltage value and output the corresponding reference voltage signal V5 and the driving control signal V3 for the power module 200 according to the target voltage value V2 ′.

[0084] In this embodiment, the specific composition of the control module 100 includes a control unit 110 and a conversion unit 120. The control unit 110 is used to implement the logical conversion between the external instruction and the target voltage value, and the conversion unit 120 is used to implement the conversion between the target voltage value and the reference voltage signal and the drive control signal, which helps to improve the flexibility of the system application.

[0085] In one embodiment, the Figure 5 As shown, the control module 100 further includes: a transmission unit 130 .

[0086] The transmission unit 130 is disposed between the internal functional units of the control module 100 and is used to implement signal transmission between the internal functional units.

[0087] In one embodiment, the transmission unit 130 is implemented based on an isolated SPI bus, and the conversion unit 120 is implemented based on a digital-to-analog converter.

[0088] Based on the same inventive concept, an embodiment of the present application further provides a dynamically controllable constant voltage source circuit, including a dynamically controllable constant voltage source circuit as described in any one of the above embodiments.

[0089] In this embodiment, the specific device configuration selection in the control module 100, the transmission unit 130 is implemented based on the isolated SPI bus, and the conversion unit 120 is implemented by a digital-to-analog converter, which helps to improve the reliability and stability of the system.

[0090] It can be understood that the above-mentioned dynamically controllable constant voltage source circuit and electronic device can also adopt other forms, not limited to the forms mentioned in the above embodiments, as long as they can achieve the effect of improving the energy efficiency of the constant voltage source circuit system and enhancing the flexibility of application.

[0091] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0092] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A dynamically controllable constant voltage source circuit, characterized in that: include: A control module, used for receiving external instructions to determine the target voltage value required to be output by the constant voltage source circuit, and realizing output control of the controllable constant voltage source circuit; A power module connected to the control module, the power module is controlled by the control module, and is used to output a driving power signal according to a control signal received from the control module; an output driving module, connected to the power module, and configured to perform constant voltage output under the drive of the driving power signal, output a constant voltage power signal that meets the target voltage value, and maintain a preset voltage difference between the constant voltage power signal and the driving power signal; An output acquisition module is connected to the output drive module, the control module and the output circuit of the controllable constant voltage source circuit, and is used to collect the constant voltage power supply signal output by the controllable constant voltage source circuit, and adjust the output drive module according to the comparison result between the constant voltage source signal and the target voltage value so that the constant voltage power supply signal matches the target voltage value.

2. A dynamically controllable constant voltage source circuit according to claim 1, characterized in that: The power module comprises: A step-down control unit, used for performing step-down conversion on the DC source signal to obtain the driving power supply signal; The voltage division regulating unit is connected to the voltage reduction control unit and is used for collecting the voltage division of the driving power supply signal to realize feedback regulation of the driving power supply signal.

3. A dynamically controllable constant voltage source circuit according to claim 2, characterized in that: The power module also includes: The voltage stabilization auxiliary unit is arranged between the voltage reduction control unit and the voltage division regulating unit, and is used for performing voltage stabilization processing on the signal transmitted between the voltage reduction control unit and the voltage division regulating unit.

4. A dynamically controllable constant voltage source circuit according to claim 2, characterized in that: The voltage stabilization auxiliary unit comprises: A first switch tube, a second switch tube and an inductor, wherein the first switch tube is controlled by the step-down control unit and is used to connect the DC source signal with the inductor, and the second switch tube is controlled by the step-down control unit and is used to connect the ground signal with the inductor.

5. A dynamically controllable constant voltage source circuit according to claim 1, characterized in that: The output driver module comprises: An amplifier unit, wherein the input stage of the amplifier unit is connected to the constant voltage power supply signal, the output stage outputs the driving power supply signal, and the amplifier unit is used to maintain the voltage difference between the constant voltage power supply signal and the driving power supply signal.

6. A dynamically controllable constant voltage source circuit according to claim 1, characterized in that: The output acquisition module comprises: A feedback regulation unit, wherein the feedback regulation unit takes the constant voltage power supply signal and the reference voltage signal as input, and is used to output a regulation signal according to a comparison result between the constant voltage power supply signal and the reference voltage signal, wherein the output regulation signal is used to regulate the constant voltage power supply signal to the target voltage value through feedback regulation.

7. A dynamically controllable constant voltage source circuit according to claim 1, characterized in that: The control module comprises: A control unit, configured to receive the external instruction and determine the target voltage value based on a preset programmable control logic in response to the acquisition of the external instruction; The conversion unit is connected to the control unit and is used to receive the target voltage value and output the corresponding reference voltage signal and a driving control signal for the power module according to the target voltage value.

8. The dynamically controllable constant voltage source circuit according to claim 1, characterized in that: The control module also includes: A transmission unit is provided between the internal functional units of the control module and is used to realize signal transmission between the internal functional units.

9. A dynamically controllable constant voltage source circuit according to claim 8, characterized in that: The transmission unit is implemented based on an isolated SPI bus, and the conversion unit is implemented based on a digital-to-analog converter.

10. An electronic device, characterized in that: It comprises a dynamically controllable constant voltage source circuit according to any one of claims 1-9.

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