Voltage regulation device, method and power supply equipment

Abstract

The present disclosure relates to a voltage regulation device, method, and power supply device. The voltage regulation device includes a fine-tuning module, a fine-tuning resistor network, and a processor. The fine-tuning module is configured to provide a fine-tuning initial voltage. The fine-tuning resistor network is electrically connected to the fine-tuning module and is configured to receive the fine-tuning initial voltage and output a target significant-bit voltage according to the fine-tuning initial voltage. The processor is electrically connected to both the fine-tuning module and the fine-tuning resistor network and is configured to output a target voltage including the target significant-bit voltage according to the obtained coarse-tuning voltage and the target significant-bit voltage, which can improve the accuracy of the output voltage on the premise that the reference voltage is fixed, so as to meet more stringent usage requirements.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic circuits, and particularly to a voltage regulating device, method and power supply device. Background Art

[0002] With the rapid development of information technology, the connection between information devices and daily life has become increasingly close, and the normal operation of information devices is inseparable from a stable and reliable power supply. Currently, the power supplies mainly include switch output power supplies and linear power supplies, etc. The switch output power supply has a higher conversion efficiency and less heat generation, but has a large ripple and low accuracy. The linear power supply has a small ripple and high accuracy, but has a large heat generation.

[0003] The programmable power supply belongs to a type of linear power supply. Due to characteristics such as low cost, high output accuracy, low high-frequency interference, low noise, and fast transient response speed, it is often used as a reliable power supply and is widely applied in fields such as scientific research, laboratories, industrial and mining enterprises, education, and mobile terminals. Since the output accuracy of the traditional programmable power supply is limited by its own bit width when the reference voltage is fixed, the traditional programmable power supply cannot meet the requirements of strict application scenarios in terms of output resolution and accuracy, especially in the application scenario of chip detection, it cannot reach the required accuracy. Summary of the Invention

[0004] The present disclosure provides a voltage regulating device, method and power supply device, which can improve the accuracy of the output voltage on the premise that the reference voltage is fixed, so as to meet more stringent usage requirements.

[0005] According to some embodiments, one aspect of the present disclosure provides a voltage regulating device, including a fine-tuning module, a fine-tuning resistor network, and a processor; the fine-tuning module is used to provide a fine-tuning initial voltage; the fine-tuning resistor network is electrically connected to the fine-tuning module, and is used to receive the fine-tuning initial voltage and output a target significant bit voltage according to the fine-tuning initial voltage; the processor is electrically connected to both the fine-tuning module and the fine-tuning resistor network, and is used to output a target voltage including the target significant bit voltage according to the obtained coarse-tuning voltage and the target significant bit voltage, and the target significant bit voltage is less than the least significant bit voltage of the coarse-tuning voltage.

[0006] In the voltage regulating device of the above embodiment, the fine-tuning module, the fine-tuning resistor network, and the processor cooperate with each other. The fine-tuning module provides the fine-tuning initial voltage, the fine-tuning resistor network receives the fine-tuning initial voltage and outputs the target significant bit voltage according to the fine-tuning initial voltage, and the processor outputs the target voltage including the target significant bit voltage according to the obtained coarse-tuning voltage and the target significant bit voltage. Since the target voltage includes the target significant bit voltage and the target significant bit voltage is less than the least significant bit voltage of the coarse-tuning voltage, on the premise that the reference voltage is fixed, by reducing the least significant bit voltage of the output voltage, the accuracy of the output voltage is improved, so as to meet more stringent usage requirements.

[0007] In some embodiments, the fine-tuning resistor network includes a first resistor and a second resistor; the first resistor is configured such that: its first end is electrically connected to the output end of the fine-tuning module, and its second end is electrically connected to the input end of the processor; the second resistor is configured such that: its first end is electrically connected to both the second end of the first resistor and the input end of the processor, and its second end is electrically connected to the output end of the processor.

[0008] In some embodiments, the amplitude range of the target voltage is equal to the amplitude range of the coarse-tuning voltage.

[0009] In some embodiments, the programmable bit width of the coarse-tuning voltage is C1 and the precision is U0; the initial fine-tuning voltage is U1; the target significant-bit voltage is Ud; Ud = U0 / C1 = U1*R2 / (R1 + R2); in the above formula, R1 is the resistance value of the first resistor, and R2 is the resistance value of the second resistor.

[0010] In some embodiments, the programmable bit width of the target voltage is greater than the programmable bit width of the coarse-tuning voltage.

[0011] In some embodiments, the amplitude range of the target voltage is [-10V, 10V].

[0012] In some embodiments, the fine-tuning module includes a fine-tuning digital-to-analog converter, which is electrically connected to the fine-tuning resistor network and is used to provide the initial fine-tuning voltage to the fine-tuning resistor network.

[0013] Another aspect of the embodiments of the present disclosure provides a power supply device, including a coarse-tuning programmable power supply for outputting a coarse-tuning voltage; and the voltage regulating device in any one of the above embodiments.

[0014] In the power supply device of the above embodiments, the coarse-tuning programmable power supply and the voltage regulating device cooperate with each other, and the fine-tuning module, the fine-tuning resistor network, and the processor of the voltage regulating device cooperate with each other. The fine-tuning module provides the initial fine-tuning voltage, the fine-tuning resistor network receives the initial fine-tuning voltage and outputs the target significant-bit voltage according to the initial fine-tuning voltage, and the processor outputs the target voltage including the target significant-bit voltage according to the obtained coarse-tuning voltage and the target significant-bit voltage. Since the target voltage includes the target significant-bit voltage, and the target significant-bit voltage is less than the least significant-bit voltage of the coarse-tuning voltage, on the premise that the reference voltage is fixed, the precision of the output voltage is improved by reducing the least significant-bit voltage of the output voltage, so as to meet more stringent usage requirements.

[0015] Another aspect of the embodiments of the present disclosure provides a voltage regulating method, including: obtaining the coarse-tuning voltage and the target significant-bit voltage provided by the fine-tuning resistor network; generating a target voltage including the target significant-bit voltage according to the coarse-tuning voltage and the target significant-bit voltage, and the target significant-bit voltage is less than the least significant-bit voltage of the coarse-tuning voltage.

[0016] In the voltage regulation method of the above embodiments, the coarse adjustment voltage and the target significant bit voltage provided by the fine adjustment resistor network are obtained; a target voltage including the target significant bit voltage is generated according to the coarse adjustment voltage and the target significant bit voltage. Since the target voltage includes the target significant bit voltage and the target significant bit voltage is less than the least significant bit voltage of the coarse adjustment voltage, on the premise that the reference voltage is fixed, the accuracy of the output voltage is improved by reducing the least significant bit voltage of the output voltage, so as to meet more stringent usage requirements.

[0017] In some embodiments, the amplitude range of the target voltage is equal to the amplitude range of the coarse adjustment voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0019] Figure 1 Schematic diagram of the principle of a voltage regulation device provided in an embodiment of the present disclosure;

[0020] Figure 2 Schematic diagram of the principle of a voltage regulation device provided in another embodiment of the present disclosure;

[0021] Figure 3 Schematic diagram of the principle of equal division of the coarse adjustment voltage provided in an embodiment of the present disclosure;

[0022] Figure 4 Dot diagram of the stepped output of the target voltage for a single adjustment provided in an embodiment of the present disclosure;

[0023] Figure 5 Bar chart of the error of the stepped output of the target voltage for a single adjustment provided in an embodiment of the present disclosure;

[0024] Figure 6 Dot diagram of the stepped output of the target voltage for multiple adjustments provided in an embodiment of the present disclosure;

[0025] Figure 7 Bar chart of the error of the stepped output of the target voltage for multiple adjustments provided in an embodiment of the present disclosure;

[0026] Figure 8 Schematic diagram of the principle of a voltage regulation device provided in an embodiment of the present disclosure;

[0027] Figure 9Schematic diagram of the principle of a power supply device provided in an embodiment of the present disclosure;

[0028] Figure 10 Schematic flowchart of a voltage regulation method provided in an embodiment of the present disclosure.

[0029] Explanation of reference numerals:

[0030] 1. Voltage regulation device; 2. Power supply device; 100. Processor; 200. Fine-tuning module; 201. Fine-tuning digital-to-analog converter; 300. Fine-tuning resistor network; 301. First resistor; 302. Second resistor; 400. Coarse-tuning programmable power supply. Detailed implementation manners

[0031] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant accompanying drawings. The preferred embodiments of the present disclosure are shown in the accompanying drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure content of the present disclosure more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present disclosure belongs. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] In the case of using "including", "having", and "comprising" described herein, unless a clear limiting term is used, such as "only", "consisting of", etc., another component can also be added. Unless otherwise mentioned, the singular form of a term can include the plural form and cannot be understood as having a quantity of one.

[0034] As used herein, the singular forms "a", "an", and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that when the terms "comprising" and / or "including" are used in this specification, the presence of the described features, integers, steps, operations, elements, and / or components can be determined, but one or more other features, integers, steps, operations, elements, components, and / or groups are not excluded from the presence or addition. At the same time, as used herein, the term "and / or" includes any and all combinations of the related listed items.

[0035] With the rapid development of the national economy and the wide use of electrical equipment, the load forms of electrical equipment are becoming increasingly complex and diverse. The application of a large number of loads with nonlinear, impulsive, and unbalanced characteristics has led to the deterioration of the power quality of the power supply network. In addition, the rapidly developing high-tech industries in modern times have increasingly strict requirements for power quality. Power quality is defined as the deviation of voltage, current, or frequency that causes electrical equipment to malfunction or fail to work properly. Once relevant power quality problems occur, they often result in economic losses. Moreover, with the rapid development of information technology, the connection between information equipment and daily life has become increasingly close, and the normal operation of information equipment depends on a stable and reliable programmable power supply. Due to its characteristics such as low cost, high output accuracy, low high-frequency interference, low noise, and fast transient response speed, a programmable power supply is usually used as a reliable power source and is widely applied in fields such as scientific research, laboratories, industrial and mining enterprises, education, and mobile terminals. Especially in the new energy field, there is a huge demand for programmable power supplies. For example, in the network connection test of distributed generation systems, EMC experiments, automatic test systems, automatic inspection systems, and reproducing power supply anomalies, etc. However, when the reference voltage of the existing programmable power supply is fixed, the output accuracy is limited by the bit width of the programmable power supply. For example, when the output voltage range of the programmable power supply is from -10V to 10V and the programmable bit width of the programmable power supply is 16 bits, the least significant bit voltage of the programmable power supply is fixed at 0.305mV. However, in the high-precision testing of chips, it is required that the programmable power supply achieve an output accuracy of 0.1mV or below, resulting in a situation where relying solely on the programmable power supply cannot meet the testing requirements.

[0036] The present disclosure aims to provide a voltage regulation device, method, and power supply equipment that can at least improve the accuracy of the output voltage on the premise of a fixed reference voltage, so as to meet more stringent usage requirements.

[0037] Please refer to Figure 1 , according to some embodiments, a voltage regulation device 1 is provided, including a fine-tuning module 200, a fine-tuning resistor network 300, and a processor 100; the fine-tuning module 200 is used to provide a fine-tuning initial voltage; the fine-tuning resistor network 300 is electrically connected to the fine-tuning module 200 and is used to receive the fine-tuning initial voltage and output a target significant bit voltage according to the fine-tuning initial voltage; the processor 100 is electrically connected to both the fine-tuning module 200 and the fine-tuning resistor network 300 and is used to output a target voltage including the target significant bit voltage according to the obtained coarse-tuning voltage and the target significant bit voltage.

[0038] Please continue to refer to Figure 1, in the voltage regulation device 1 of the above embodiment, the fine-tuning module 200, the fine-tuning resistor network 300, and the processor 100 cooperate with each other. The fine-tuning module 200 provides a fine-tuning initial voltage. The fine-tuning resistor network 300 receives the fine-tuning initial voltage and outputs a target significant-bit voltage according to the fine-tuning initial voltage. The processor 100 outputs a target voltage including the target significant-bit voltage based on the obtained coarse-tuning voltage and the target significant-bit voltage. Since the target voltage includes the target significant-bit voltage and the target significant-bit voltage is less than the least significant-bit voltage of the coarse-tuning voltage, on the premise that the reference voltage is fixed, by reducing the least significant-bit voltage of the output voltage, the accuracy of the output voltage is improved, so as to meet more stringent usage requirements.

[0039] Please refer to Figure 2 , in some embodiments, the fine-tuning resistor network 300 includes a first resistor 301 and a second resistor 302. The first resistor 301 is configured such that: the first end is electrically connected to the output end of the fine-tuning module 200, and the second end is electrically connected to the input end of the processor 100. The second resistor 302 is configured such that: the first end is electrically connected to both the second end of the first resistor 301 and the input end of the processor 100, and the second end is electrically connected to the output end of the processor 100. The fine-tuning resistor network 300 is used to divide the fine-tuning initial voltage output by the fine-tuning module 200, so as to reduce the accuracy of the fine-tuning initial voltage output by the fine-tuning module 200 to the target significant-bit voltage across the second resistor 302. By adjusting the target significant-bit voltage across the second resistor 302, the voltage across the second resistor 302 is adjusted in Q steps with the target significant-bit voltage as the step size, where Q is a positive integer. Thus, on the premise that the reference voltage is fixed, the least significant-bit voltage of the coarse-tuning voltage is equally divided into Q parts, and further the output accuracy of the coarse-tuning voltage is increased by Q times to meet more stringent usage requirements.

[0040] Please continue to refer to Figure 2 , in some embodiments, the amplitude range of the target voltage is equal to the amplitude range of the coarse-tuning voltage, so as to ensure that the reference voltage is fixed.

[0041] Please continue to refer to Figure 2, in some embodiments, the programmable bit width of the coarse - tuned voltage is C1, the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy of the coarse - tuned voltage, is U0; the fine - tuned initial voltage is U1; the target significant bit voltage is Ud; the target significant bit voltage Ud can be determined according to the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, and the fine - tuned initial voltage U1. For example, the target significant bit voltage Ud = U0 / C1; and, according to the target significant bit voltage Ud and the fine - tuned initial voltage U1, the resistance value R1 of the first resistor 301 and the resistance value R2 of the second resistor 302 are determined, U1*R2 / (R1 + R2)=Ud; the target quantity Q = U0 / Ud, thereby realizing the equal division of the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, into the target quantity Q equal parts, and further increasing the output accuracy of the coarse - tuned voltage by the target quantity Q times to meet more stringent usage requirements; according to the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, and the target significant bit voltage Ud, the output target voltage U is determined, the target voltage U = V = N*U0+M*Ud, where N∈[0,Q], M∈[0,Q], and both N and M are natural numbers, thereby improving the output accuracy of the target voltage.

[0042] Please continue to refer to Figure 2 , in some embodiments, the amplitude range of the target voltage is equal to the amplitude range of the coarse - tuned voltage, which can be determined by the specific application scenario. For example, the amplitude range of the coarse - tuned voltage can be [-2.5V, 2.5V], [-5V, 5V], or [-10V, 10V], etc. Since the amplitude range of the target voltage is equal to the amplitude range of the coarse - tuned voltage, the amplitude range of the target voltage can also be [-2.5V, 2.5V], [-5V, 5V], or [-10V, 10V], etc. The reference voltage range of the target voltage and the reference voltage range FS of the coarse - tuned voltage are 5V, 10V, or 20V, etc., so as to adapt to different application scenarios. Please refer to Figure 2 and Figure 3 , in some embodiments, the programmable bit width of the target voltage is greater than the programmable bit width of the coarse - tuned voltage; for example, the programmable bit width C1 of the coarse - tuned voltage can be 10 bits, 12 bits, 16 bits, 20 bits, or 24 bits, etc., then the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, can be calculated according to the programmable bit width of the coarse - tuned voltage U0 = FS / 2^C1. For example, when the programmable bit width C1 of the coarse - tuned voltage = 16 bits, and the amplitude range of the target voltage and the amplitude range of the coarse - tuned voltage are [-10V, 10V], i.e., the reference voltage range FS of the target voltage = 20V, the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, U0 = 0.305mV, then the target significant bit voltage Ud = U0 / C1, and the rounded - off target significant bit voltage Ud = 20uV; Please refer to Figure 2 and Figure 3, in some embodiments, the resistance value R1 of the first resistor 301 is 10 KΩ, the resistance value R2 of the second resistor 302 is 200 Ω, the fine-tuning initial voltage U1 is 1 mV, then U1*R2 / (R1 + R2) = Ud, and the target quantity Q = U0 / Ud. After rounding, Q = 16. Thus, on the premise that the reference voltage is fixed, the least significant bit voltage of the coarse-tuning voltage, that is, the accuracy U0 of the coarse-tuning voltage, which is 0.305 mV, is equally divided into 16 steps to obtain the target significant bit voltage Ud, that is, 20 μV. The voltage across the second resistor 302 is adjusted in 16 steps with the target significant bit voltage Ud, that is, 20 μV as the step size, thereby increasing the output accuracy of the coarse-tuning voltage by 16 times and reducing the quantization error of the coarse-tuning voltage.

[0043] Please refer to Figure 2 and Figure 3 , in some embodiments, when the amplitude range of the target voltage and the amplitude range of the coarse-tuning voltage are [-10 V, 10 V], the reference voltage range FS of the target voltage is 20 V; and when the programmable bit width C1 of the coarse-tuning voltage is 16 bits, the least significant bit voltage of the coarse-tuning voltage, that is, the accuracy U0 of the coarse-tuning voltage, is 0.305 mV, and the target significant bit voltage Ud is 20 μV. Without using the voltage regulation device 1 of the present disclosure, the programmable bit width C1 of the coarse-tuning voltage is 16 bits, and the least significant bit voltage of the coarse-tuning voltage, that is, the accuracy U0 of the coarse-tuning voltage, can be calculated as U0 = FS / 2^C1 = 20 / 2^16 = 0.305 mV; however, when using the voltage regulation device 1 of the present disclosure, since the target significant bit voltage Ud is 20 μV, the programmable bit width of the target voltage can be calculated according to the reference voltage range FS of the target voltage and the target significant bit voltage Ud After rounding, the programmable bit width C of the target voltage is 20 bits, thereby realizing the improvement of the programmable bit width of the coarse-tuning voltage from 16 bits to 20 bits of the target voltage on the premise that the reference voltage is fixed.

[0044] Please refer to Figure 4 and Figure 5 , in some embodiments, the fine-tuning module outputs 16 increasing values in steps of 1 mV. After voltage division by the fine-tuning resistor network, it outputs 16 increasing values in steps of 20 μV. When the fine-tuning module outputs a 1 mV stepped voltage, the fine-tuning network resistor outputs a total of 16 increasing 20 μV voltages, totaling 0.305 mV; at the same time, please refer to Figure 5 , the applicant has obtained through experiments that when using the voltage regulation device of the present application, the maximum error σ of a single adjustment is 6 μV; please refer to Figure 6 and Figure 7 , the applicant has obtained through multiple experiments that when using the voltage regulation device of the present application, the linearity of the output target voltage is relatively high, and the maximum error σ of multiple adjustments is 7 μV.

[0045] Please refer to Figure 8 , in some embodiments, the fine-tuning module 200 includes a fine-tuning digital-to-analog converter, which is electrically connected to the fine-tuning resistor network 300 and is used to provide a fine-tuning initial voltage to the fine-tuning resistor network 300. The digital-to-analog converter, also known as the D / A converter, abbreviated as DAC, can convert a parallel binary digital quantity into a DC voltage or a DC current. It is usually applied to the output channel of a process control computer system. The digital-to-analog converter is connected to an actuator to achieve automatic control of the production process. The digital-to-analog converter circuit can also be applied in the design of an analog-to-digital converter using feedback technology. The digital-to-analog converter can be composed of 4 parts, namely, a weighted resistor network, an operational amplifier, a reference power supply, and an analog switch. According to the different weighted resistor networks, different types of digital-to-analog converters can be formed. For example, a weighted resistor network digital-to-analog converter, an R–2R inverted T-shaped resistor network digital-to-analog converter, or a single-value current-type network digital-to-analog converter, etc.; or, according to different decoding network structures, different types of digital-to-analog converters can be formed. For example, a T-shaped resistor network digital-to-analog converter, a weighted current digital-to-analog converter, a weighted resistor network digital-to-analog converter, a CMOS switch-type digital-to-analog converter, a bipolar switch digital-to-analog converter, an ECL current switch-type digital-to-analog converter, etc.

[0046] Please refer to Figure 9 , according to some embodiments, a power supply device 2 is provided, including a coarse-tuning programmable power supply 400 for outputting a coarse-tuning voltage; and the voltage regulating device 1 in any one of the above embodiments.

[0047] Please continue to refer to Figure 9 , in the power supply device of the above embodiment, the coarse-tuning programmable power supply 400 and the voltage regulating device 1 cooperate with each other, and the fine-tuning module 200, the fine-tuning resistor network 300, and the processor 100 of the voltage regulating device 1 cooperate with each other. The fine-tuning module 200 provides a fine-tuning initial voltage, the fine-tuning resistor network 300 receives the fine-tuning initial voltage and outputs a target significant bit voltage according to the fine-tuning initial voltage, and the processor 100 outputs a target voltage including the target significant bit voltage according to the obtained coarse-tuning voltage and the target significant bit voltage. Since the target voltage includes the target significant bit voltage and the target significant bit voltage is less than the least significant bit voltage of the coarse-tuning voltage, on the premise that the reference voltage is fixed, the accuracy of the output voltage is improved by reducing the least significant bit voltage of the output voltage, so as to meet more stringent usage requirements.

[0048] Please continue to refer to Figure 9 , in some embodiments, the power supply device can provide functions such as pressurization, current measurement, voltage measurement, and voltage measurement under no-load signal, and the output voltage of the power supply device has good linearity and can meet different design expectations and test requirements.

[0049] Please continue to refer toFigure 9 , in some embodiments, the fine-tuning module 200 includes a fine-tuning digital-to-analog converter 201. The fine-tuning digital-to-analog converter 201 is electrically connected to the fine-tuning resistor network 300 and is configured to provide a fine-tuning initial voltage to the fine-tuning resistor network 300. A digital-to-analog converter, also known as a D / A converter, abbreviated as DAC, can convert a parallel binary digital quantity into a DC voltage or a DC current. It is usually applied to the output channel of a process control computer system. The digital-to-analog converter is connected to an actuator to achieve automatic control of the production process. The digital-to-analog converter circuit can also be applied in the design of an analog-to-digital converter using feedback technology. A digital-to-analog converter can be composed of 4 parts, namely a weighted resistor network, an operational amplifier, a reference power supply, and an analog switch. According to different weighted resistor networks, different types of digital-to-analog converters can be formed. For example, a weighted resistor network digital-to-analog converter, an R–2R inverted T-shaped resistor network digital-to-analog converter, or a single-value current-type network digital-to-analog converter, etc.; or, according to different decoding network structures, different types of digital-to-analog converters can be formed. For example, a T-shaped resistor network digital-to-analog converter, a weighted current digital-to-analog converter, a weighted resistor network digital-to-analog converter, a CMOS switch-type digital-to-analog converter, a bipolar switch digital-to-analog converter, an ECL current switch-type digital-to-analog converter, etc.

[0050] Please refer to Figure 10 , according to some embodiments, a voltage regulation method is provided, including:

[0051] Step S10: Obtain a coarse-tuning voltage and a target significant bit voltage provided by the fine-tuning resistor network;

[0052] Step S20: Generate a target voltage including the target significant bit voltage according to the coarse-tuning voltage and the target significant bit voltage.

[0053] Please continue to refer to Figure 10 , in steps S10 and S20 of the voltage regulation method in the above embodiments, by obtaining the coarse-tuning voltage and the target significant bit voltage provided by the fine-tuning resistor network; generating a target voltage including the target significant bit voltage according to the coarse-tuning voltage and the target significant bit voltage. Since the target voltage includes the target significant bit voltage, and the target significant bit voltage is less than the least significant bit voltage of the coarse-tuning voltage, on the premise that the reference voltage is fixed, the accuracy of the output voltage is improved by reducing the least significant bit voltage of the output voltage, so as to meet more stringent usage requirements.

[0054] Please refer to Figure 2 and Figure 9, in some embodiments, the fine-tuning resistance network 300 includes a first resistor 301 and a second resistor 302; the first resistor 301 is configured such that: its first end is electrically connected to the output end of the fine-tuning module 200, and its second end is electrically connected to the input end of the processor 100; the second resistor 302 is configured such that: its first end is electrically connected to both the second end of the first resistor 301 and the input end of the processor 100, and its second end is electrically connected to the output end of the processor 100; the fine-tuning resistance network 300 is used to divide the fine-tuning initial voltage output by the fine-tuning module 200, thereby reducing the accuracy of the fine-tuning initial voltage output by the fine-tuning module 200 to the target significant-bit voltage across the second resistor 302. By adjusting the target significant-bit voltage across the second resistor 302, the voltage across the second resistor 302 is adjusted in Q steps with the target significant-bit voltage as the step size, where Q is a positive integer. Thus, on the premise that the reference voltage is fixed, the least significant-bit voltage of the coarse-tuning voltage is equally divided into Q parts, and further, the output accuracy of the coarse-tuning voltage is increased by Q times to meet more stringent usage requirements.

[0055] Please continue to refer to 2 and Figure 9 , in some embodiments, the amplitude range of the target voltage is equal to the amplitude range of the coarse-tuning voltage, thereby ensuring that the reference voltage is fixed; the programmable bit width of the coarse-tuning voltage is C1, and the least significant-bit voltage of the coarse-tuning voltage, i.e., the accuracy of the coarse-tuning voltage, is U0; the fine-tuning initial voltage is U1; the target significant-bit voltage is Ud; the target significant-bit voltage Ud can be determined according to the least significant-bit voltage of the coarse-tuning voltage, i.e., the accuracy U0 of the coarse-tuning voltage, and the fine-tuning initial voltage U1. For example, the target significant-bit voltage Ud = U0 / C1; and, according to the target significant-bit voltage Ud and the fine-tuning initial voltage U1, the resistance value R1 of the first resistor 301 and the resistance value R2 of the second resistor 302 are determined, where U1*R2 / (R1 + R2) = Ud; the target number Q = U0 / Ud, thereby realizing the equal division of the least significant-bit voltage of the coarse-tuning voltage, i.e., the accuracy U0 of the coarse-tuning voltage, into Q parts, and further increasing the output accuracy of the coarse-tuning voltage by Q times to meet more stringent usage requirements; according to the least significant-bit voltage of the coarse-tuning voltage, i.e., the accuracy U0 of the coarse-tuning voltage, and the target significant-bit voltage Ud, the output target voltage U is determined, where the target voltage U = V = N*U0 + M*Ud, where N ∈ [0, Q], M ∈ [0, Q], and both N and M are natural numbers, thereby improving the output accuracy of the target voltage.

[0056] Please continue to refer to 2 and Figure 9, in some embodiments, the amplitude range of the target voltage is equal to that of the coarse-adjustment voltage, which can be determined according to specific application scenarios. For example, the amplitude range of the coarse-adjustment voltage can be [-2.5V, 2.5V], [-5V, 5V], [-10V, 10V], etc. Since the amplitude range of the target voltage is equal to that of the coarse-adjustment voltage, the amplitude range of the target voltage can also be [-2.5V, 2.5V], [-5V, 5V], [-10V, 10V], etc. The reference voltage range of the target voltage and the reference voltage range FS of the coarse-adjustment voltage are 5V, 10V, 20V, etc., so as to adapt to different application scenarios.

[0057] Please continue to refer to 2 and Figure 9 , in some embodiments, the programmable bit width C1 of the coarse-adjustment voltage can be 10 bits, 12 bits, 16 bits, 20 bits, 24 bits, etc. Then, the least significant bit voltage of the coarse-adjustment voltage, that is, the accuracy of the coarse-adjustment voltage U0 = FS / 2^C1, can be calculated according to the programmable bit width of the coarse-adjustment voltage. For example, when the programmable bit width C1 of the coarse-adjustment voltage = 16 bits, and the amplitude range of the target voltage and the amplitude range of the coarse-adjustment voltage are [-10V, 10V], that is, the reference voltage range FS of the target voltage = 20V, the least significant bit voltage of the coarse-adjustment voltage, that is, the accuracy of the coarse-adjustment voltage U0 = 0.305mV. Then, the target significant bit voltage Ud = U0 / C1, and the rounded target significant bit voltage Ud = 20uV; Please refer to Figure 2 and Figure 9 , in some embodiments, the resistance value R1 of the first resistor 301 = 10KΩ, the resistance value R2 of the second resistor 302 = 200Ω, and the fine-adjustment initial voltage U1 = 1mV. Then U1*R2 / (R1+R2) = Ud, and the target quantity Q = U0 / Ud. The rounded Q = 16. Thus, on the premise of a fixed reference voltage, the least significant bit voltage of the coarse-adjustment voltage, that is, the accuracy of the coarse-adjustment voltage U0, which is 0.305mV, is equally divided into 16 steps to obtain the target significant bit voltage Ud, that is, 20uV. The voltage across the second resistor 302 is adjusted in 16 steps with the target significant bit voltage Ud, that is, 20uV as the step size, thereby increasing the output accuracy of the coarse-adjustment voltage by 16 times and reducing the quantization error of the coarse-adjustment voltage.

[0058] Please continue to refer to 2 and Figure 9, in some embodiments, when the amplitude range of the target voltage and the amplitude range of the coarse - tuned voltage are [-10V, 10V], the reference voltage range FS of the target voltage is 20V; and when the programmable bit width C1 of the coarse - tuned voltage is 16 bits, the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, is 0.305mV, and the target significant bit voltage Ud is 20uV. Without using the voltage regulation method of the present disclosure, with the programmable bit width C1 of the coarse - tuned voltage being 16 bits, the least significant bit voltage of the coarse - tuned voltage, i.e., the accuracy U0 of the coarse - tuned voltage, can be calculated as U0 = FS / 2^C1 = 20 / 2^16 = 0.305mV; however, when using the voltage regulation method of the present disclosure, since the target significant bit voltage Ud is 20uV, then according to the reference voltage range FS of the target voltage and the target significant bit voltage Ud, the programmable bit width of the target voltage can be calculated. Then, the programmable bit width C of the target voltage is rounded up to 20 bits, so as to achieve the improvement of the programmable bit width of the coarse - tuned voltage from 16 bits to 20 bits of the target voltage on the premise of a fixed reference voltage.

[0059] Please refer to Figure 9 , in some embodiments, the fine - tuning module 200 includes a fine - tuning digital - to - analog converter, which is electrically connected to the fine - tuning resistor network 300 and is used to provide a fine - tuning initial voltage to the fine - tuning resistor network 300. The digital - to - analog converter, also known as the D / A converter, abbreviated as DAC, can convert a parallel binary digital quantity into a DC voltage or a DC current. It is usually applied to the output channel of a process - control computer system. The digital - to - analog converter is connected to an actuator to achieve the automatic control of the production process. The digital - to - analog converter circuit can also be applied in the design of an analog - to - digital converter using feedback technology. The digital - to - analog converter can be composed of 4 parts, namely, a weighted resistor network, an operational amplifier, a reference power supply, and an analog switch. According to different weighted resistor networks, different types of digital - to - analog converters can be formed. For example, a weighted resistor network digital - to - analog converter, an R–2R inverted - T - shaped resistor network digital - to - analog converter, or a single - valued current - type network digital - to - analog converter, etc.; or, according to different decoding network structures, different types of digital - to - analog converters can be formed. For example, a T - shaped resistor network digital - to - analog converter, a weighted - current digital - to - analog converter, a weighted resistor network digital - to - analog converter, a CMOS switch - type digital - to - analog converter, a bipolar - type switch digital - to - analog converter, an ECL current - switch - type digital - to - analog converter, etc.

[0060] Although Figure 10 the steps in the flowchart are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, the execution of these steps has no strict sequential limitation, and these steps can be executed in other sequences. Moreover, although Figure 10At least some of the steps may include multiple sub-steps or multiple phases. These sub-steps or phases do not necessarily need to be completed at the same time, but can be executed at different times. The execution of these sub-steps or phases does not necessarily need to be sequential either, but can be executed alternately or in rotation with at least some of the sub-steps or phases of other steps or other steps.

[0061] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided by the present disclosure can include non-volatile and / or volatile memories.

[0062] Please note that the above embodiments are for illustrative purposes only and do not imply a limitation on the present disclosure.

[0063] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0064] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0065] The above-described embodiments only represent several implementation manners of the present disclosure. Their descriptions are relatively specific and detailed, but they should not be construed as a limitation on the scope of the disclosed patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several modifications and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A voltage regulation device, characterized in that, it includes: a fine-tuning module for providing a fine-tuning initial voltage; a fine-tuning resistor network electrically connected to the fine-tuning module for receiving the fine-tuning initial voltage and outputting a target significant-bit voltage according to the fine-tuning initial voltage; a processor electrically connected to both the fine-tuning module and the fine-tuning resistor network for outputting a target voltage including the target significant-bit voltage according to the obtained coarse-tuning voltage and the target significant-bit voltage, and the target significant-bit voltage is less than the least significant-bit voltage of the coarse-tuning voltage; the fine-tuning resistor network includes: a first resistor configured such that: the first end is electrically connected to the output end of the fine-tuning module, and the second end is electrically connected to the input end of the processor; a second resistor configured such that: the first end is electrically connected to both the second end of the first resistor and the input end of the processor, and the second end is electrically connected to the output end of the processor; the voltage across the second resistor is configured to be adjusted in Q steps with the target significant-bit voltage as the step size to equally divide the least significant-bit voltage of the coarse-tuning voltage into Q parts, and to increase the output accuracy of the coarse-tuning voltage by Q times, where Q is a positive integer; the fine-tuning resistor network is used to divide the fine-tuning initial voltage to reduce the accuracy of the fine-tuning initial voltage output by the fine-tuning module to the target significant-bit voltage across the second resistor.

2. The voltage regulation device according to claim 1, characterized in that, the amplitude range of the target voltage is equal to the amplitude range of the coarse-tuning voltage.

3. The voltage regulation device according to claim 2, characterized in that, the programmable bit width of the coarse-tuning voltage is C1 and the accuracy is U0; the fine-tuning initial voltage is U1; the target significant-bit voltage is Ud; Ud = U0 / C1 = U1*R2 / (R1 + R2); in the above formula, R1 is the resistance value of the first resistor, and R2 is the resistance value of the second resistor.

4. The voltage regulation device according to claim 3, characterized in that, the output accuracy U0 of the coarse-tuning voltage = FS / 2^C1; wherein, the reference voltage range of the target voltage and the reference voltage range of the coarse-tuning voltage are FS.

5. The voltage regulation device according to claim 3, characterized in that, the programmable bit width of the target voltage is greater than the programmable bit width of the coarse-tuning voltage.

6. The voltage regulation device according to any one of claims 1-5, characterized in that, the amplitude range of the target voltage is [-10V, 10V].

7. The voltage regulation device according to any one of claims 1-5, characterized in that, the fine-tuning module includes: a fine-tuning digital-to-analog converter electrically connected to the fine-tuning resistor network for providing the fine-tuning initial voltage to the fine-tuning resistor network.

8. A power supply device, characterized in that, it includes: a coarse-tuning programmable power supply for outputting a coarse-tuning voltage; and the voltage regulation device according to any one of claims 1-7.

9. A voltage regulation method, characterized in that, Implementing based on the voltage regulating device according to any one of claims 1-7, the voltage regulating method includes: Obtaining a coarse-tuned voltage and a target effective-bit voltage provided by a fine-tuning resistor network; Generating a target voltage including the target effective-bit voltage according to the coarse-tuned voltage and the target effective-bit voltage, where the target effective-bit voltage is less than the least significant bit voltage of the coarse-tuned voltage.

10. According to the voltage regulating method described in claim 9, wherein, the amplitude range of the target voltage is equal to the amplitude range of the coarse-tuned voltage.

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