Current sampling method and system for integrated inductor-resistor component of power supply circuit

Abstract

The present invention relates to the field of power electronics, and discloses a current sampling method for an integrated inductor-resistor component of a power supply circuit, including: constructing an inductor-resistor package layout of an inductor and a resistor, encapsulating the inductor and the resistor, and obtaining an integrated inductor-resistor component; defining sampling circuit parameters of a power supply circuit, configuring a parameter adaptive algorithm of the sampling circuit parameters, and constructing an adaptive sampling circuit of the power supply circuit; calculating the parasitic inductance and current waveform of the adaptive sampling circuit, integrating the adaptive sampling circuit and the integrated inductor-resistor component into a preset circuit board, obtaining a target current sampling circuit board, and performing current sampling of the power supply circuit through the target current sampling circuit board to obtain a sampling result. The present invention can improve the flexibility and accuracy of current sampling.

Description

Technical Field

[0001] The invention relates to a current sampling method and system for an integrated inductor-resistor component of a power supply circuit, and belongs to the field of power electronics. Background Art

[0002] Current sampling refers to the process of monitoring and obtaining the current size and changes in the circuit through specific circuits and methods. According to the results of current sampling, the circuit is adjusted, such as adjusting the power output and protecting the circuit from overcurrent damage. Current sampling has advantages such as being widely used in power electronics, motor control, battery management systems, power management and many other fields.

[0003] The traditional current sampling method usually obtains the current value indirectly by connecting a small sampling resistor in series in the circuit and then measuring the voltage drop across the resistor. In high-speed or high-precision applications, it may be affected by circuit parasitic parameters, resulting in limited sampling accuracy and dynamic range, resulting in poor flexibility and accuracy of current sampling. Summary of the invention

[0004] The present invention provides a current sampling method and system for an integrated inductor-resistor component of a power supply circuit, the main purpose of which is to improve the flexibility and accuracy of current sampling.

[0005] To achieve the above object, the present invention provides a current sampling method for an integrated inductor-resistor component of a power supply circuit, comprising:

[0006] Acquire sampling requirements and output specifications of a power supply circuit, analyze required inductance values ​​and required resistance values ​​of the power supply circuit according to the sampling requirements and output specifications, construct an inductor of the power supply circuit according to the required inductance values, and construct a resistor of the power supply circuit according to the required resistance values;

[0007] Constructing an inductor-resistor package layout of the inductor and the resistor, analyzing the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets a preset electromagnetic interference standard, packaging the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor assembly;

[0008] Determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement;

[0009] Defining sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate, and digital filter level, configuring a parameter adaptive algorithm of the sampling circuit parameters, and constructing an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor;

[0010] The parasitic inductance and current waveform of the adaptive sampling circuit are calculated. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold value at the same time, the adaptive sampling circuit and the integrated inductor and resistor component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

[0011] Optionally, analyzing the required inductance value and the required resistance value of the power supply circuit according to the sampling requirement and the output specification includes:

[0012] Determining the output power and output voltage of the power supply circuit according to the output specification;

[0013] Calculating a peak current of the power supply circuit based on the output power and the output voltage;

[0014] The required inductance value of the power supply circuit is calculated by the peak current using the following formula:

[0015] ,

[0016] in, Indicates the required inductance value of the power supply circuit, represents the duty cycle, Indicates the input voltage, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the switching frequency of the power supply circuit;

[0017] determining a resistance requirement of the power supply circuit;

[0018] determining an induced voltage of the power supply circuit according to the resistance requirement and the output specification;

[0019] Based on the sensed voltage and the resistance requirement, a required resistance value of the power supply circuit is calculated.

[0020] Optionally, the calculating a required resistance value of the power supply circuit based on the induced voltage and the resistance requirement includes:

[0021] According to the resistance requirement and the corresponding output specification of the power supply circuit, define the temperature resistance value variation coefficient, resistance temperature difference, load resistance variation coefficient and load working time of the power supply circuit;

[0022] Based on the induced voltage, the temperature resistance value variation coefficient, the resistance temperature difference, the load resistance variation coefficient and the load working time, the required resistance value of the power supply circuit is calculated using the following formula:

[0023] ,

[0024] in, Indicates the required resistance value of the power supply circuit, Indicates the induced voltage of the power supply circuit, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the coefficient of change of resistance value with temperature, Represents the resistance temperature difference, represents the load resistance variation coefficient, Indicates load working time.

[0025] Optionally, the step of constructing an inductor-resistor package layout of the inductor and the resistor comprises:

[0026] constructing a pinout of the inductor and the resistor;

[0027] simulating temperature distribution of the inductor and the resistor according to the pin arrangement;

[0028] constructing a heat dissipation path for the inductor and the resistor through the temperature distribution;

[0029] defining electrical connections between the inductor and the resistor;

[0030] analyzing the connection performance of the inductor and the resistor under the electrical connection;

[0031] When the connection performance meets a preset connection threshold, an inductor-resistor package layout of the inductor and the resistor is constructed according to the electrical connection, the heat dissipation path, and the pin arrangement.

[0032] Optionally, analyzing the electromagnetic interference of the inductor-resistor package layout includes:

[0033] Establishing an electromagnetic compatibility test environment for the inductor-resistor package layout;

[0034] According to the electromagnetic compatibility test environment, defining electromagnetic simulation parameters and electromagnetic constraint conditions of the inductor-resistor package layout;

[0035] Based on the electromagnetic simulation parameters and electromagnetic constraint conditions, establishing an electromagnetic simulation model of the inductor-resistor package layout;

[0036] Setting a simulation type of the inductor-resistor package layout;

[0037] Based on the simulation type, dividing the electromagnetic simulation model into finite element units;

[0038] respectively calculating the unit integral and the boundary integral of the finite element unit;

[0039] Calculating the global integral of the finite element unit through the unit integral and the boundary integral;

[0040] Based on the global integral, calculating the physical value of the electromagnetic simulation model;

[0041] Based on the physical value, simulating the inductor-resistor package layout to obtain an electromagnetic simulation result;

[0042] The electromagnetic interference of the inductor-resistor package layout is analyzed according to the electromagnetic simulation results.

[0043] Optionally, the separately calculating the unit integral and the boundary integral of the finite element unit comprises:

[0044] constructing an approximate function and a unit shape function of the finite element unit;

[0045] Based on the approximate function and the unit shape function, the unit integral of the finite element unit is calculated using the following formula:

[0046] ,

[0047] in, represents the element integral of the finite element, and represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the unit volume of the finite element unit;

[0048] constructing a boundary shape function of the finite element unit;

[0049] Based on the boundary shape function and the approximate function, the boundary integral of the finite element unit is calculated using the following formula:

[0050] ,

[0051] in, represents the boundary integral of the finite element, represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the boundary shape function of the finite element unit, Represents the boundary area elements of a finite element.

[0052] Optionally, determining a load current range and a load response requirement of the power supply circuit includes:

[0053] Collecting current data of the power supply circuit;

[0054] Based on the current data, analyzing the quiescent current range and peak current of the power supply circuit;

[0055] Determining a load current range of the power supply circuit according to the quiescent current range and the peak current;

[0056] Analyzing dynamic changes in the load of the power supply circuit based on the load current range and the current data;

[0057] A load response requirement for the dynamic change of the load is determined.

[0058] Optionally, the calculating the parasitic inductance and current waveform of the adaptive sampling circuit includes:

[0059] Modeling the adaptive sampling circuit to obtain a modeled adaptive sampling circuit;

[0060] identifying parasitic elements of the modeled adaptive sampling circuit;

[0061] analyzing a parasitic element characteristic of the parasitic element;

[0062] Calculating the parasitic inductance of the adaptive sampling circuit based on the parasitic element characteristics;

[0063] Integrating the parasitic inductance into the modeling adaptive sampling circuit to obtain an inductance simulation sampling circuit;

[0064] Marking the time node behavior of the inductance simulation sampling circuit;

[0065] According to the time node behavior, the current waveform of the adaptive sampling circuit is analyzed.

[0066] Optionally, performing current sampling of the power supply circuit by the target current sampling circuit board to obtain a sampling result includes:

[0067] Initializing the target current sampling circuit board to obtain an initialized current sampling circuit board;

[0068] Using the initialization current sampling circuit board to collect the initial signal of the power supply circuit;

[0069] analyzing the signal strength of the initial signal;

[0070] Based on the signal strength, the initial signal is subjected to signal gain by using a gain optimization algorithm in a parameter adaptive algorithm corresponding to the target current sampling circuit board to obtain a gain signal;

[0071] Analyzing the intensity variation range of the signal intensity, and optimizing the resolution of the gain signal using the resolution optimization algorithm in the parameter adaptive algorithm according to the intensity variation range, to obtain a resolution optimized signal;

[0072] Utilizing the sampling rate optimization algorithm in the parameter adaptive algorithm to optimize the sampling rate of the resolution optimized signal, to obtain a sampling rate optimized signal;

[0073] analyzing signal noise of the sampling rate optimized signal;

[0074] According to the signal noise, a filter coefficient of the sampling rate optimization signal is determined by using a digital filter level optimization algorithm in the parameter adaptive algorithm;

[0075] Based on the filtering coefficient, the sampling rate optimization signal is filtered to obtain a sampling result of the power supply circuit.

[0076] In order to solve the above problems, the present invention also provides a current sampling system for an integrated inductor-resistor component of a power supply circuit, the system comprising:

[0077] An inductor and resistor analysis module, used to obtain sampling requirements and output specifications of a power supply circuit, analyze the required inductance value and required resistance value of the power supply circuit according to the sampling requirements and output specifications, construct the inductor of the power supply circuit according to the required inductance value, and construct the resistor of the power supply circuit according to the required resistance value;

[0078] An inductor-resistor combination module, used to construct an inductor-resistor package layout of the inductor and the resistor, analyze the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets the preset electromagnetic interference standard, package the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor component;

[0079] A circuit load analysis module, used to determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement;

[0080] A sampling circuit construction module, used to define sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate and digital filter level, configure a parameter adaptive algorithm of the sampling circuit parameters, and construct an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor;

[0081] The circuit current sampling module is used to calculate the parasitic inductance and current waveform of the adaptive sampling circuit. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold at the same time, the adaptive sampling circuit and the integrated inductor resistance component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

[0082] In order to solve the above problem, the present invention further provides an electronic device, the electronic device comprising:

[0083] at least one processor; and,

[0084] a memory communicatively connected to the at least one processor; wherein,

[0085] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to implement the above-mentioned power supply circuit integrated inductor resistance component current sampling method.

[0086] In order to solve the above problems, the present invention also provides a computer-readable storage medium, in which at least one instruction is stored. The at least one instruction is executed by a processor in an electronic device to implement the above-mentioned power supply circuit integrated inductor resistor component current sampling method.

[0087] Compared with the problems described in the background technology, the present invention analyzes the required inductance value and the required resistance value of the power supply circuit according to the sampling requirements and output specifications, and can determine the appropriate inductance value and resistance value for the power supply circuit, thereby providing a basis for subsequent current sampling; the present invention constructs the inductor of the power supply circuit according to the required inductance value, and constructs the resistor of the power supply circuit through the required resistance value. By correctly selecting and constructing the inductor and the resistor, it can be ensured that the power supply circuit works stably and efficiently according to the design specifications; further, the present invention constructs the inductor and the resistor The inductor-resistor packaging layout can provide a basis for the packaging of the subsequent inductors and resistors. Furthermore, when the electromagnetic interference meets the preset electromagnetic interference standard, the inductor and the resistor are packaged based on the inductor-resistor packaging layout to obtain an integrated inductor-resistor component, which can improve the compactness, reliability and performance of the circuit, while reducing the space occupation and interconnection complexity on the circuit board. Further, the present invention can ensure that the design of the power supply circuit can meet the load current range and response requirements of a specific application. Further, the present invention is based on the sampling requirements, the load current range and the response requirements of the specific application. and load response requirements, determine that the Hall effect sensor of the power supply circuit plays a vital role in the power supply circuit. It can not only accurately measure the current, but also help protect the circuit, ensure the stable operation of the circuit, and meet specific sampling, load current range and load response requirements. Next, the parameter adaptive algorithm of the sampling circuit parameters configured by the present invention can be customized according to the actual application scenario and sensor characteristics to ensure that the best sampling effect can be obtained under different working conditions. The present invention constructs the adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor, which can construct a sampling circuit that can adaptively adjust its sampling parameters according to the real-time working conditions of the power supply circuit, thereby improving the performance and reliability of the circuit. Finally, when the parasitic inductance and current waveform simultaneously meet the preset parasitic inductance standard value and current waveform threshold, the present invention integrates the adaptive sampling circuit and the integrated inductor resistor component into a preset circuit board, and obtains the target current sampling circuit board, which can ensure that the adaptive sampling circuit and the integrated inductor resistor component can provide stable and accurate current sampling after being integrated into the circuit board, meeting specific design and performance requirements. Therefore, the present invention can improve the flexibility and accuracy of current sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 A schematic diagram of a current sampling method for an integrated inductor-resistor component of a power supply circuit provided by an embodiment of the present invention;

[0089] Figure 2A functional module diagram of a current sampling system for an integrated inductor-resistor component of a power supply circuit provided by an embodiment of the present invention;

[0090] Figure 3 A schematic diagram of the structure of an electronic device of a current sampling system for an inductor-resistor component integrated with a power supply circuit provided by an embodiment of the present invention;

[0091] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0092] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0093] The embodiment of the present application provides a current sampling method for an integrated inductor-resistor component of a power supply circuit. The execution subject of the current sampling method for an integrated inductor-resistor component of a power supply circuit includes but is not limited to at least one of the electronic devices such as a server and a terminal that can be configured to execute the method provided by the embodiment of the present application. In other words, the current sampling method for an integrated inductor-resistor component of a power supply circuit can be executed by software or hardware installed in a terminal device or a server device. The server includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, etc.

[0094] Embodiment 1:

[0095] Reference Figure 1 FIG. 1 is a flow chart of a current sampling method for an integrated inductor-resistor component of a power supply circuit provided by an embodiment of the present invention. In this embodiment, the current sampling method for an integrated inductor-resistor component of a power supply circuit includes:

[0096] S1. Obtain sampling requirements and output specifications of a power supply circuit, analyze required inductance and required resistance of the power supply circuit according to the sampling requirements and output specifications, construct an inductor of the power supply circuit according to the required inductance, and construct a resistor of the power supply circuit according to the required resistance.

[0097] It should be explained that the power supply circuit refers to an electronic circuit whose main function is to convert input electrical energy into stable output electrical energy suitable for use by electronic equipment. The sampling requirements refer to the relevant requirements for electrical parameters that need to be collected and monitored when designing and implementing the power supply circuit, including parameter type, sampling frequency, accuracy and other parameters. The output specifications refer to a series of performance standards that the power supply circuit should meet when working normally, including output voltage, output current, output power and other specifications.

[0098] The present invention analyzes the required inductance value and the required resistance value of the power supply circuit according to the sampling requirements and output specifications, and can determine appropriate inductance value and resistance value for the power supply circuit, thereby providing a basis for subsequent current sampling.

[0099] In detail, the analyzing the required inductance value and the required resistance value of the power supply circuit according to the sampling requirement and the output specification includes:

[0100] Determining the output power and output voltage of the power supply circuit according to the output specification;

[0101] Calculating a peak current of the power supply circuit based on the output power and the output voltage;

[0102] The required inductance value of the power supply circuit is calculated by the peak current using the following formula:

[0103] ,

[0104] in, Indicates the required inductance value of the power supply circuit, represents the duty cycle, Indicates the input voltage, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the switching frequency of the power supply circuit;

[0105] determining a resistance requirement of the power supply circuit;

[0106] determining an induced voltage of the power supply circuit according to the resistance requirement and the output specification;

[0107] Based on the sensed voltage and the resistance requirement, a required resistance value of the power supply circuit is calculated.

[0108] Among them, the output power refers to the power provided by the power supply circuit to the load, the output voltage refers to the voltage provided by the power supply circuit to the load, the peak current refers to the maximum value of the inductor current in the switching power supply within its cycle, the required inductance value refers to the value required by the inductor in the power supply circuit, the duty cycle refers to the ratio of the conduction time of the switching device in the switching power supply to the entire switching cycle time, the input voltage refers to the voltage received by the input end of the power supply circuit, the switching frequency refers to the number of times the switching device in the switching power supply is switched per unit time, the resistance requirement refers to the specific requirements of the resistor in the power supply circuit, which may include the resistance value, power level, accuracy, temperature coefficient, withstand voltage, etc. of the resistor, the induced voltage refers to the voltage generated in the inductor of the switching power supply due to current changes, and the required resistance value refers to the resistance value of the resistor selected in the circuit to achieve current detection.

[0109] Further, the calculating the required resistance value of the power supply circuit based on the induced voltage and the resistance requirement includes:

[0110] According to the resistance requirement and the corresponding output specification of the power supply circuit, define the temperature resistance value variation coefficient, resistance temperature difference, load resistance variation coefficient and load working time of the power supply circuit;

[0111] Based on the induced voltage, the temperature resistance value variation coefficient, the resistance temperature difference, the load resistance variation coefficient and the load working time, the required resistance value of the power supply circuit is calculated using the following formula:

[0112] ,

[0113] in, Indicates the required resistance value of the power supply circuit, Indicates the induced voltage of the power supply circuit, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the coefficient of change of resistance value with temperature, Represents the resistance temperature difference, represents the load resistance variation coefficient, Indicates load working time.

[0114] Among them, the temperature resistance value variation coefficient refers to the ratio of the resistance value of the resistor to the temperature change, the resistance temperature difference refers to the difference between the operating temperature of the resistor and its reference temperature (usually room temperature), the load resistance variation coefficient refers to the resistance variation coefficient of the resistor under long-term load, and the load working time refers to the working time of the resistor under specific load conditions.

[0115] The present invention constructs the inductor of the power supply circuit according to the required inductance value, and constructs the resistor of the power supply circuit according to the required resistance value. By properly selecting and constructing the inductor and the resistor, it can be ensured that the power supply circuit works stably and efficiently according to the design specifications. Among them, the inductor refers to an electronic component that can store energy in its magnetic field and resist the change of current in the circuit, and the resistor refers to an electronic component that provides a fixed or variable resistance and is used to limit the current in the circuit.

[0116] S2. construct an inductor-resistor packaging layout of the inductor and the resistor, analyze the electromagnetic interference of the inductor-resistor packaging layout, and when the electromagnetic interference meets the preset electromagnetic interference standard, package the inductor and the resistor based on the inductor-resistor packaging layout to obtain an integrated inductor-resistor component.

[0117] The present invention can provide a basis for the subsequent packaging of inductors and resistors by constructing the inductor-resistor packaging layout of the inductor and the resistor.

[0118] In detail, the inductor-resistor package layout of the inductor and the resistor is constructed, including:

[0119] constructing a pinout of the inductor and the resistor;

[0120] simulating temperature distribution of the inductor and the resistor according to the pin arrangement;

[0121] constructing a heat dissipation path for the inductor and the resistor through the temperature distribution;

[0122] defining electrical connections between the inductor and the resistor;

[0123] analyzing the connection performance of the inductor and the resistor under the electrical connection;

[0124] When the connection performance meets a preset connection threshold, an inductor-resistor package layout of the inductor and the resistor is constructed according to the electrical connection, the heat dissipation path, and the pin arrangement.

[0125] Among them, the pin arrangement refers to the physical layout and order of the pins of the inductor and resistor in the package, the temperature distribution refers to the temperature distribution of the inductor and resistor in the entire package under specific working conditions, the heat dissipation path refers to the heat transfer path from the heat generation area of ​​the inductor and resistor to the external environment, the electrical connection refers to the electrical connection method between the inductor and resistor and between them and other components on the circuit board, the connection performance refers to the reliability and efficiency of the electrical connection, including the impedance, signal integrity, power transmission efficiency and other performance of the connection, and the inductor-resistor package layout refers to the specific arrangement, connection and heat dissipation design of the inductor and resistor in the integrated package.

[0126] Optionally, simulating the temperature distribution of the inductor and the resistor according to the pin arrangement may be evaluated by thermal simulation software.

[0127] Analyzing the electromagnetic interference of the inductor-resistor package layout can systematically analyze the electromagnetic interference problem of the inductor-resistor package layout and propose effective solutions to ensure that the product meets the electromagnetic compatibility requirements.

[0128] In detail, the analyzing the electromagnetic interference of the inductor-resistor package layout includes:

[0129] Establishing an electromagnetic compatibility test environment for the inductor-resistor package layout;

[0130] According to the electromagnetic compatibility test environment, defining electromagnetic simulation parameters and electromagnetic constraint conditions of the inductor-resistor package layout;

[0131] Based on the electromagnetic simulation parameters and electromagnetic constraint conditions, establishing an electromagnetic simulation model of the inductor-resistor package layout;

[0132] Setting a simulation type of the inductor-resistor package layout;

[0133] Based on the simulation type, dividing the electromagnetic simulation model into finite element units;

[0134] respectively calculating the unit integral and the boundary integral of the finite element unit;

[0135] Calculating the global integral of the finite element unit through the unit integral and the boundary integral;

[0136] Based on the global integral, calculating the physical value of the electromagnetic simulation model;

[0137] Based on the physical value, simulating the inductor-resistor package layout to obtain an electromagnetic simulation result;

[0138] The electromagnetic interference of the inductor-resistor package layout is analyzed according to the electromagnetic simulation results.

[0139] The electromagnetic compatibility test environment refers to a specific laboratory setting for testing electromagnetic interference (EMI) and electromagnetic susceptibility (EMS) of electronic equipment. The electromagnetic simulation parameters refer to variables and values ​​used to simulate the characteristics of the inductor-resistor package layout during the electromagnetic simulation process, such as material properties (dielectric constant, magnetic permeability), geometric dimensions, frequency range, power supply and signal characteristics. The electromagnetic constraints refer to the restrictions and boundary conditions imposed in the electromagnetic simulation. The electromagnetic simulation model refers to the mathematical representation of the inductor-resistor package layout, which is used to simulate its electromagnetic behavior on a computer. The simulation type refers to the simulation method or technology used. The finite element unit refers to the basic mathematical unit used to discretize the geometric structure in the simulation model. The unit integration refers to the mathematical integration operation performed inside a single finite element unit in finite element analysis, the boundary integration refers to the mathematical integration operation performed on the boundary of the finite element unit in finite element analysis, the global integration refers to the integration of the unit integration and boundary integration results of all finite element units to obtain the global physical quantity value of the entire simulation model, the physical quantity value refers to the quantity calculated in the electromagnetic simulation, such as electric field strength, magnetic field strength, power loss, radiation power, etc., the electromagnetic simulation result refers to the output data obtained after the electromagnetic simulation model is run under given parameters and constraints, usually expressed in a chart, numerical or visual form, and the electromagnetic interference refers to the influence of the external electromagnetic field generated by or received by the inductor-resistor package layout.

[0140] Further, the separately calculating the unit integral and the boundary integral of the finite element unit includes:

[0141] constructing an approximate function and a unit shape function of the finite element unit;

[0142] Based on the approximate function and the unit shape function, the unit integral of the finite element unit is calculated using the following formula:

[0143] ,

[0144] in, represents the element integral of the finite element, and represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the unit volume of the finite element unit;

[0145] constructing a boundary shape function of the finite element unit;

[0146] Based on the boundary shape function and the approximate function, the boundary integral of the finite element unit is calculated using the following formula:

[0147] ,

[0148] in, represents the boundary integral of the finite element, represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the boundary shape function of the finite element unit, Represents the boundary area elements of a finite element.

[0149] Among them, the approximate function refers to a function used to approximate a continuous solution, the unit shape function refers to a function defined within the unit, which satisfies the conditions that the unit volume integral is equal to 1 and the unit boundary length integral is equal to 0, the boundary shape function refers to a function defined on the unit boundary, which satisfies the condition that the unit boundary length integral is equal to 1, the unit volume refers to the volume of the finite element unit, and the boundary area element refers to the boundary area of ​​the finite element unit.

[0150] In the present invention, when the electromagnetic interference meets the preset electromagnetic interference standard, the inductor and the resistor are packaged based on the inductor-resistor package layout to obtain an integrated inductor-resistor component, which can improve the compactness, reliability and performance of the circuit, while reducing the space occupied and interconnection complexity on the circuit board. Among them, the electromagnetic interference standard refers to a series of prescribed restrictions and requirements for evaluating the behavior of electronic devices in an electromagnetic environment to ensure that they do not generate excessive electromagnetic interference, and the integrated inductor-resistor component refers to an electronic component that integrates an inductor and a resistor in the same package.

[0151] S3. Determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement.

[0152] The present invention can ensure that the design of the power supply circuit can meet the load current range and response requirements of a specific application.

[0153] In detail, the determining of the load current range and load response requirement of the power supply circuit includes:

[0154] Collecting current data of the power supply circuit;

[0155] Based on the current data, analyzing the quiescent current range and peak current of the power supply circuit;

[0156] Determining a load current range of the power supply circuit according to the quiescent current range and the peak current;

[0157] Analyzing dynamic changes in the load of the power supply circuit based on the load current range and the current data;

[0158] Determine the load response requirement of the load dynamic change.

[0159] Among them, the current data refers to the current value flowing through the power supply circuit during operation obtained by measurement, the static current range refers to the range between the minimum and maximum current values ​​flowing through the circuit when the power supply circuit is in a stable working state and no load changes occur, the peak current refers to the maximum current value that instantly appears in the power supply circuit when the load changes suddenly (such as startup, rapid switching, etc.), the load current range refers to the range of all current values ​​that the power supply circuit can operate safely, including the static current range and the peak current, the dynamic load change refers to the change of the load of the power supply circuit over time during operation, including the current size, change rate and change mode, and the load response requirement refers to the performance requirement that the power supply circuit needs to meet when facing dynamic load changes.

[0160] Optionally, the current data collected from the power supply circuit may be measured by a current sensor or a current probe;

[0161] Optionally, the analyzing the dynamic change of the load of the power supply circuit based on the load current range and the current data mainly analyzes the frequency, amplitude and rate of the change of the power supply circuit.

[0162] The present invention determines, based on the sampling requirements, the load current range and the load response requirements, that the Hall effect sensor of the power supply circuit plays a vital role in the power supply circuit. It can not only accurately measure the current, but also help protect the circuit, ensure the stable operation of the circuit, and meet specific sampling, load current range and load response requirements. The Hall effect sensor is a sensor that uses the Hall effect to detect and measure the magnetic field.

[0163] S4. According to the Hall effect sensor, define sampling circuit parameters of the power supply circuit, wherein the sampling circuit parameters include signal gain, resolution, sampling rate, and digital filter level, configure a parameter adaptive algorithm for the sampling circuit parameters, and construct an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor.

[0164] It should be explained that the signal gain refers to the degree of amplification of the output signal of the Hall effect sensor by the sampling circuit, the resolution refers to the minimum signal change that the sampling circuit can distinguish, the sampling rate refers to the number of samples per second, and the digital filtering level refers to the level or stage of filtering the sampled signal in digital signal processing.

[0165] The parameter adaptive algorithm for configuring the sampling circuit parameters of the present invention can be customized according to the actual application scenario and sensor characteristics to ensure that the best sampling effect can be obtained under different working conditions. The parameter adaptive algorithm refers to an algorithm that can automatically adjust the key parameters of the sampling circuit according to the characteristics of the input signal or environmental conditions.

[0166] Optionally, the present invention constructs the adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor to construct a sampling circuit that can adaptively adjust its sampling parameters according to the real-time working conditions of the power supply circuit, thereby improving the performance and reliability of the circuit. In detail, the adaptive sampling circuit refers to a circuit that can automatically adjust its sampling parameters according to the characteristics of the input signal.

[0167] S5. Calculate the parasitic inductance and current waveform of the adaptive sampling circuit. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold at the same time, integrate the adaptive sampling circuit and the integrated inductor and resistor component into a preset circuit board to obtain a target current sampling circuit board. Perform current sampling of the power supply circuit through the target current sampling circuit board to obtain a sampling result.

[0168] The present invention can calculate the parasitic inductance in the adaptive sampling circuit by calculating the parasitic inductance and current waveform of the adaptive sampling circuit, and analyze its influence on the current waveform to provide a basis for subsequent sampling circuit optimization.

[0169] In detail, the calculating of the parasitic inductance and current waveform of the adaptive sampling circuit includes:

[0170] Modeling the adaptive sampling circuit to obtain a modeled adaptive sampling circuit;

[0171] identifying parasitic elements of the modeled adaptive sampling circuit;

[0172] analyzing a parasitic element characteristic of the parasitic element;

[0173] Calculating the parasitic inductance of the adaptive sampling circuit based on the parasitic element characteristics;

[0174] Integrating the parasitic inductance into the modeling adaptive sampling circuit to obtain an inductance simulation sampling circuit;

[0175] Marking the time node behavior of the inductance simulation sampling circuit;

[0176] According to the time node behavior, the current waveform of the adaptive sampling circuit is analyzed.

[0177] The modeling adaptive sampling circuit refers to a mathematical model of an adaptive sampling circuit created using circuit design software (such as SPICE), the parasitic element refers to a component that is not intentionally designed in the circuit but exists naturally due to the physical structure and wiring method of the circuit, the parasitic inductance refers to the inductance effect caused by the wire, component pin or trace in the circuit, the parasitic element characteristics refer to the electrical characteristics of the parasitic element, such as the inductance value of the parasitic inductance, the capacitance value of the parasitic capacitor and the resistance value of the parasitic resistor, the inductance simulation sampling circuit refers to a circuit model that takes into account the influence of parasitic inductance in the modeling adaptive sampling circuit, the time node behavior refers to the circuit state and behavior at a specific time point in the circuit simulation, including the change of voltage, current and other electrical parameters, and the current waveform refers to a graphical representation of the change of current at a certain point in the circuit over time. The current waveform can display information such as the instantaneous value, peak value, frequency component, phase and waveform distortion of the current.

[0178] Optionally, marking the time node behavior of the inductance analog sampling circuit may be implemented by using a time domain reflectometry (TDR) technique.

[0179] In the present invention, when the parasitic inductance and the current waveform simultaneously meet the preset parasitic inductance standard value and the current waveform threshold, the adaptive sampling circuit and the integrated inductor and resistor component are integrated into a preset circuit board to obtain a target current sampling circuit board, which can ensure that the adaptive sampling circuit and the integrated inductor and resistor component can provide stable and accurate current sampling after being integrated into the circuit board, and meet specific design and performance requirements, wherein the parasitic inductance standard value refers to the maximum value of the parasitic inductance acceptable in the circuit, and the current waveform threshold refers to the acceptable range of the current waveform in terms of parameters such as shape, amplitude, rise time, and fall time. The target current sampling circuit board refers to a circuit board designed and integrated with an adaptive sampling circuit and an integrated inductor and resistor component according to the above-mentioned parasitic inductance threshold and current waveform threshold.

[0180] Finally, the present invention can achieve accurate sampling of the power supply circuit by executing current sampling of the power supply circuit through the target current sampling circuit board.

[0181] In detail, the current sampling of the power supply circuit is performed by the target current sampling circuit board to obtain the sampling result, including:

[0182] Initializing the target current sampling circuit board to obtain an initialized current sampling circuit board;

[0183] Using the initialization current sampling circuit board to collect the initial signal of the power supply circuit;

[0184] analyzing the signal strength of the initial signal;

[0185] Based on the signal strength, the initial signal is subjected to signal gain by using a gain optimization algorithm in a parameter adaptive algorithm corresponding to the target current sampling circuit board to obtain a gain signal;

[0186] Analyzing the intensity variation range of the signal intensity, and optimizing the resolution of the gain signal using the resolution optimization algorithm in the parameter adaptive algorithm according to the intensity variation range, to obtain a resolution optimized signal;

[0187] Utilizing the sampling rate optimization algorithm in the parameter adaptive algorithm to optimize the sampling rate of the resolution optimized signal, to obtain a sampling rate optimized signal;

[0188] analyzing signal noise of the sampling rate optimized signal;

[0189] According to the signal noise, a filter coefficient of the sampling rate optimization signal is determined by using a digital filter level optimization algorithm in the parameter adaptive algorithm;

[0190] Based on the filtering coefficient, the sampling rate optimization signal is filtered to obtain a sampling result of the power supply circuit.

[0191] Among them, the initialization of the current sampling circuit board refers to a series of settings and calibration operations on the current sampling circuit board to ensure that it is in the correct initial state before starting to collect signals. The initial signal refers to the current signal of the power supply circuit collected for the first time after the initialization of the current sampling circuit board is completed. The signal strength refers to the amplitude of the initial signal, which reflects the energy level of the signal. The gain optimization algorithm refers to an algorithm for automatically adjusting the gain setting of the current sampling circuit board. The gain signal refers to the signal adjusted by the gain optimization algorithm. The intensity variation range refers to the range in which the signal intensity may vary. The resolution optimization algorithm refers to an algorithm for adjusting the resolution of the sampling circuit. The resolution optimization signal refers to the signal processed by the resolution optimization algorithm. The sampling rate optimization algorithm refers to an algorithm for determining the optimal sampling rate. The sampling rate optimization signal refers to the signal adjusted by the sampling rate optimization algorithm. The signal noise refers to random fluctuations that are not desired to appear in the signal. The digital filter level optimization algorithm refers to an algorithm for determining the optimal filter parameters. The filter coefficient refers to the parameters used to define the filter characteristics in the digital filter. The sampling result refers to the clean and accurate current signal finally obtained after all the above optimization and processing steps, which reflects the actual working state of the power supply circuit.

[0192] Compared with the problems described in the background technology, the present invention analyzes the required inductance value and the required resistance value of the power supply circuit according to the sampling requirements and output specifications, and can determine the appropriate inductance value and resistance value for the power supply circuit, thereby providing a basis for subsequent current sampling; the present invention constructs the inductor of the power supply circuit according to the required inductance value, and constructs the resistor of the power supply circuit through the required resistance value. By correctly selecting and constructing the inductor and the resistor, it can be ensured that the power supply circuit works stably and efficiently according to the design specifications; further, the present invention constructs the inductor and the resistor The inductor-resistor packaging layout can provide a basis for the packaging of the subsequent inductors and resistors. Furthermore, when the electromagnetic interference meets the preset electromagnetic interference standard, the inductor and the resistor are packaged based on the inductor-resistor packaging layout to obtain an integrated inductor-resistor component, which can improve the compactness, reliability and performance of the circuit, while reducing the space occupation and interconnection complexity on the circuit board. Further, the present invention can ensure that the design of the power supply circuit can meet the load current range and response requirements of a specific application. Further, the present invention is based on the sampling requirements, the load current range and the response requirements of the specific application. and load response requirements, determine that the Hall effect sensor of the power supply circuit plays a vital role in the power supply circuit. It can not only accurately measure the current, but also help protect the circuit, ensure the stable operation of the circuit, and meet specific sampling, load current range and load response requirements. Next, the parameter adaptive algorithm of the sampling circuit parameters configured by the present invention can be customized according to the actual application scenario and sensor characteristics to ensure that the best sampling effect can be obtained under different working conditions. The present invention constructs the adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor, which can construct a sampling circuit that can adaptively adjust its sampling parameters according to the real-time working conditions of the power supply circuit, thereby improving the performance and reliability of the circuit. Finally, when the parasitic inductance and current waveform simultaneously meet the preset parasitic inductance standard value and current waveform threshold, the present invention integrates the adaptive sampling circuit and the integrated inductor resistor component into a preset circuit board, and obtains the target current sampling circuit board, which can ensure that the adaptive sampling circuit and the integrated inductor resistor component can provide stable and accurate current sampling after being integrated into the circuit board, meeting specific design and performance requirements. Therefore, the present invention can improve the flexibility and accuracy of current sampling.

[0193] Embodiment 2:

[0194] like Figure 2 , which is a functional module diagram of a current sampling system for an integrated inductor-resistor component of a power supply circuit provided by an embodiment of the present invention.

[0195] The power supply circuit integrated inductor resistor component current sampling system 200 of the present invention can be installed in an electronic device. According to the functions to be implemented, the power supply circuit integrated inductor resistor component current sampling system 200 can include an inductor resistor analysis module 201, an inductor resistor combination module 202, a circuit load analysis module 203, a sampling circuit construction module 204 and a circuit current sampling module 205. The module of the present invention can also be called a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and can complete fixed functions, which are stored in the memory of the electronic device.

[0196] In this embodiment, the functions of each module / unit are as follows:

[0197] The inductance and resistance analysis module 201 is used to obtain the sampling requirements and output specifications of the power supply circuit, analyze the required inductance value and the required resistance value of the power supply circuit according to the sampling requirements and output specifications, construct the inductor of the power supply circuit according to the required inductance value, and construct the resistor of the power supply circuit according to the required resistance value;

[0198] The inductor-resistor combination module 202 is used to construct an inductor-resistor package layout of the inductor and the resistor, analyze the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets the preset electromagnetic interference standard, package the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor component;

[0199] The circuit load analysis module 203 is used to determine the load current range and load response requirements of the power supply circuit, and determine the Hall effect sensor of the power supply circuit according to the sampling requirements, the load current range and the load response requirements;

[0200] The sampling circuit construction module 204 is used to define sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate and digital filter level, configure a parameter adaptive algorithm of the sampling circuit parameters, and construct an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor;

[0201] The circuit current sampling module 205 is used to calculate the parasitic inductance and current waveform of the adaptive sampling circuit. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold at the same time, the adaptive sampling circuit and the integrated inductor and resistor component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

[0202] In detail, the modules described in the power supply circuit integrated inductor resistor component current sampling system 200 described in the embodiment of the present invention adopt the same technical means as the power supply circuit integrated inductor resistor component current sampling method described in the accompanying drawings when used, and can produce the same technical effects, which will not be repeated here.

[0203] An embodiment of the present invention provides an electronic device for implementing a current sampling method of an integrated inductor-resistor component of a power supply circuit.

[0204] See also Figure 3 As shown, the electronic device may include a processor 30, a memory 31, a communication bus 32 and a communication interface 33, and may also include a computer program stored in the memory 31 and executable on the processor 30, such as a current sampling method program for an integrated inductor-resistor component of a power supply circuit.

[0205] In some embodiments, the processor may be composed of an integrated circuit, for example, a single packaged integrated circuit, or a plurality of integrated circuits with the same or different functions, including one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and a combination of various control chips. The processor is the control core (Control Unit) of the electronic device, and uses various interfaces and lines to connect the various components of the entire electronic device. It runs or executes programs or modules stored in the memory (for example, executing a current sampling program for an integrated inductor resistor component of a power supply circuit), and calls data stored in the memory to execute various functions of the electronic device and process data.

[0206] The memory includes at least one type of readable storage medium, and the readable storage medium includes flash memory, mobile hard disk, multimedia card, card-type memory (for example: SD or DX memory, etc.), magnetic memory, disk, optical disk, etc. In some embodiments, the memory may be an internal storage unit of an electronic device, such as a mobile hard disk of the electronic device. In other embodiments, the memory may also be an external storage device of an electronic device, such as a plug-in mobile hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), etc. equipped on the electronic device. Further, the memory may also include both an internal storage unit and an external storage device of the electronic device. The memory can not only be used to store application software and various types of data installed in the electronic device, such as the code based on the current sampling program of the integrated inductor resistor component of the power supply circuit, but also can be used to temporarily store data that has been output or is to be output.

[0207] The communication bus may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. The bus may be divided into an address bus, a data bus, a control bus, etc. The bus is configured to realize connection and communication between the memory and at least one processor, etc.

[0208] The communication interface is used for communication between the above-mentioned electronic device and other devices, including a network interface and a user interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a WI-FI interface, a Bluetooth interface, etc.), which is generally used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a display (Display), an input unit (such as a keyboard (Keyboard)), and optionally, the user interface may also be a standard wired interface, a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, and an OLED (Organic Light-Emitting Diode, organic light-emitting diode) touch device, etc. Among them, the display may also be appropriately referred to as a display screen or a display unit, which is used to display information processed in the electronic device and to display a visual user interface.

[0209] For example, although not shown, the electronic device may also include a power source (such as a battery) for supplying power to various components. Preferably, the power source may be logically connected to the at least one processor through a power management system, so that the power management system can realize functions such as charging management, discharging management, and power consumption management. The power source may also include any components such as one or more DC or AC power sources, recharging systems, power failure detection circuits, power converters or inverters, and power status indicators. The electronic device may also include a variety of sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be repeated here.

[0210] It should be understood that the embodiment is for illustration only and the scope of the patent application is not limited to this structure.

[0211] The power supply circuit integrated inductor resistance component current sampling program stored in the memory of the electronic device is a combination of multiple instructions, and when running in the processor, it can achieve:

[0212] Acquire sampling requirements and output specifications of a power supply circuit, analyze required inductance values ​​and required resistance values ​​of the power supply circuit according to the sampling requirements and output specifications, construct an inductor of the power supply circuit according to the required inductance values, and construct a resistor of the power supply circuit according to the required resistance values;

[0213] Constructing an inductor-resistor package layout of the inductor and the resistor, analyzing the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets a preset electromagnetic interference standard, packaging the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor assembly;

[0214] Determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement;

[0215] Defining sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate, and digital filter level, configuring a parameter adaptive algorithm of the sampling circuit parameters, and constructing an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor;

[0216] The parasitic inductance and current waveform of the adaptive sampling circuit are calculated. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold value at the same time, the adaptive sampling circuit and the integrated inductor and resistor component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

[0217] Specifically, the specific implementation method of the processor for the above instructions can refer to the description of the relevant steps in the corresponding embodiment of the accompanying drawings, which will not be repeated here.

[0218] Furthermore, if the module / unit integrated in the electronic device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium can include: any entity or system that can carry the computer program code, a recording medium, a USB flash drive, a mobile hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0219] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor of an electronic device, the computer program can implement:

[0220] Acquire sampling requirements and output specifications of a power supply circuit, analyze required inductance values ​​and required resistance values ​​of the power supply circuit according to the sampling requirements and output specifications, construct an inductor of the power supply circuit according to the required inductance values, and construct a resistor of the power supply circuit according to the required resistance values;

[0221] Constructing an inductor-resistor package layout of the inductor and the resistor, analyzing the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets a preset electromagnetic interference standard, packaging the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor assembly;

[0222] Determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement;

[0223] Defining sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate, and digital filter level, configuring a parameter adaptive algorithm of the sampling circuit parameters, and constructing an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor;

[0224] The parasitic inductance and current waveform of the adaptive sampling circuit are calculated. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold value at the same time, the adaptive sampling circuit and the integrated inductor and resistor component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

[0225] In the several embodiments provided by the present invention, it should be understood that the disclosed devices, systems and methods can be implemented in other ways. For example, the system embodiments described above are only schematic, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0226] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0227] In addition, each functional module in each embodiment of the present invention may be integrated into one processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional modules.

[0228] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0229] Therefore, no matter from which point of view, the embodiments should be regarded as illustrative and non-restrictive, and the scope of the present invention is limited by the appended claims rather than the above description, so it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any attached figure mark in the claims should not be regarded as limiting the claims involved.

[0230] The embodiments of the present application can acquire and process relevant data based on artificial intelligence technology. Artificial Intelligence (AI) is the theory, method, technology and application system that uses digital computers or machines controlled by digital computers to simulate, extend and expand human intelligence, perceive the environment, acquire knowledge and use knowledge to obtain the best results.

[0231] In addition, it is clear that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. Multiple units or systems stated in a system claim can also be implemented by one unit or system through software or hardware. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

Claims

1. A current sampling method for an integrated inductor-resistor component of a power supply circuit, characterized in that: The method comprises: Acquire sampling requirements and output specifications of a power supply circuit, analyze required inductance values ​​and required resistance values ​​of the power supply circuit according to the sampling requirements and output specifications, construct an inductor of the power supply circuit according to the required inductance values, and construct a resistor of the power supply circuit according to the required resistance values; Constructing an inductor-resistor package layout of the inductor and the resistor, analyzing the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets a preset electromagnetic interference standard, packaging the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor assembly; Determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement; Defining sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate, and digital filter level, configuring a parameter adaptive algorithm of the sampling circuit parameters, and constructing an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor; Calculating the parasitic inductance and current waveform of the adaptive sampling circuit, and when the parasitic inductance and current waveform simultaneously meet the preset parasitic inductance standard value and current waveform threshold, integrating the adaptive sampling circuit and the integrated inductor and resistor component into a preset circuit board to obtain a target current sampling circuit board, and performing current sampling of the power supply circuit through the target current sampling circuit board to obtain a sampling result; The step of analyzing the required inductance value and the required resistance value of the power supply circuit according to the sampling requirement and the output specification includes: Determining the output power and output voltage of the power supply circuit according to the output specification; Calculating a peak current of the power supply circuit based on the output power and the output voltage; The required inductance value of the power supply circuit is calculated by the peak current using the following formula: ， in, Indicates the required inductance value of the power supply circuit, represents the duty cycle, Indicates the input voltage, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the switching frequency of the power supply circuit; determining a resistance requirement of the power supply circuit; determining an induced voltage of the power supply circuit according to the resistance requirement and the output specification; Based on the sensed voltage and the resistance requirement, a required resistance value of the power supply circuit is calculated.

2. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 1, characterized in that: The calculating the required resistance value of the power supply circuit based on the induced voltage and the resistance requirement includes: According to the resistance requirement and the corresponding output specification of the power supply circuit, define the temperature resistance value variation coefficient, resistance temperature difference, load resistance variation coefficient and load working time of the power supply circuit; Based on the induced voltage, the temperature resistance value variation coefficient, the resistance temperature difference, the load resistance variation coefficient and the load working time, the required resistance value of the power supply circuit is calculated using the following formula: ， in, Indicates the required resistance value of the power supply circuit, Indicates the induced voltage of the power supply circuit, Indicates the output voltage, Indicates the peak current of the power supply circuit, Indicates the output power, Indicates the temperature resistance value variation coefficient, Represents the resistance temperature difference, represents the load resistance variation coefficient, Indicates load working time.

3. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 2, characterized in that: The inductor-resistor package layout of the inductor and the resistor is constructed, comprising: constructing a pinout of the inductor and the resistor; simulating temperature distribution of the inductor and the resistor according to the pin arrangement; constructing a heat dissipation path for the inductor and the resistor through the temperature distribution; defining electrical connections between the inductor and the resistor; analyzing the connection performance of the inductor and the resistor under the electrical connection; When the connection performance meets a preset connection threshold, an inductor-resistor package layout of the inductor and the resistor is constructed according to the electrical connection, the heat dissipation path, and the pin arrangement.

4. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 3, characterized in that: The analyzing the electromagnetic interference of the inductor-resistor package layout includes: Establishing an electromagnetic compatibility test environment for the inductor-resistor package layout; According to the electromagnetic compatibility test environment, defining electromagnetic simulation parameters and electromagnetic constraint conditions of the inductor-resistor package layout; Based on the electromagnetic simulation parameters and electromagnetic constraint conditions, establishing an electromagnetic simulation model of the inductor-resistor package layout; Setting a simulation type of the inductor-resistor package layout; Based on the simulation type, dividing the electromagnetic simulation model into finite element units; respectively calculating the unit integral and the boundary integral of the finite element unit; Calculating the global integral of the finite element unit through the unit integral and the boundary integral; Based on the global integral, calculating the physical value of the electromagnetic simulation model; Based on the physical value, simulating the inductor-resistor package layout to obtain an electromagnetic simulation result; The electromagnetic interference of the inductor-resistor package layout is analyzed according to the electromagnetic simulation results.

5. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 4, characterized in that: The separately calculating the unit integral and the boundary integral of the finite element unit comprises: constructing an approximate function and a unit shape function of the finite element unit; Based on the approximate function and the unit shape function, the unit integral of the finite element unit is calculated using the following formula: ， in, represents the element integral of the finite element, and represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the unit volume of the finite element unit; constructing a boundary shape function of the finite element unit; Based on the boundary shape function and the approximate function, the boundary integral of the finite element unit is calculated using the following formula: ， in, represents the boundary integral of the finite element, represents the element shape function of the finite element, represents the approximate function of the finite element unit, represents the boundary shape function of the finite element unit, Represents the boundary area elements of a finite element.

6. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 5, characterized in that: Determining the load current range and load response requirements of the power supply circuit includes: Collecting current data of the power supply circuit; Based on the current data, analyzing a quiescent current range and a peak current of the power supply circuit; Determining a load current range of the power supply circuit according to the quiescent current range and the peak current; Analyzing dynamic changes in the load of the power supply circuit based on the load current range and the current data; Determine the load response requirement of the load dynamic change.

7. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 6, characterized in that: The calculating of the parasitic inductance and current waveform of the adaptive sampling circuit comprises: Modeling the adaptive sampling circuit to obtain a modeled adaptive sampling circuit; identifying parasitic elements of the modeled adaptive sampling circuit; analyzing a parasitic element characteristic of the parasitic element; Calculating the parasitic inductance of the adaptive sampling circuit based on the parasitic element characteristics; Integrating the parasitic inductance into the modeling adaptive sampling circuit to obtain an inductance simulation sampling circuit; Marking the time node behavior of the inductance simulation sampling circuit; According to the time node behavior, the current waveform of the adaptive sampling circuit is analyzed.

8. The current sampling method of the integrated inductor-resistor component of the power supply circuit according to claim 7, characterized in that: The current sampling of the power supply circuit is performed by the target current sampling circuit board to obtain a sampling result, including: Initializing the target current sampling circuit board to obtain an initialized current sampling circuit board; Using the initialization current sampling circuit board to collect the initial signal of the power supply circuit; analyzing the signal strength of the initial signal; Based on the signal strength, the initial signal is subjected to signal gain by using a gain optimization algorithm in a parameter adaptive algorithm corresponding to the target current sampling circuit board to obtain a gain signal; Analyzing the intensity variation range of the signal intensity, and optimizing the resolution of the gain signal using the resolution optimization algorithm in the parameter adaptive algorithm according to the intensity variation range, to obtain a resolution optimized signal; Utilizing the sampling rate optimization algorithm in the parameter adaptive algorithm to optimize the sampling rate of the resolution optimized signal, to obtain a sampling rate optimized signal; analyzing signal noise of the sampling rate optimized signal; According to the signal noise, a filter coefficient of the sampling rate optimization signal is determined by using a digital filter level optimization algorithm in the parameter adaptive algorithm; Based on the filtering coefficient, the sampling rate optimization signal is filtered to obtain a sampling result of the power supply circuit.

9. A current sampling system for an integrated inductor-resistor component of a power supply circuit, characterized in that: The system is used to execute the current sampling method of the integrated inductor-resistor component of the power supply circuit according to any one of claims 1 to 8, and comprises: An inductor and resistor analysis module, used to obtain sampling requirements and output specifications of a power supply circuit, analyze the required inductance value and required resistance value of the power supply circuit according to the sampling requirements and output specifications, construct the inductor of the power supply circuit according to the required inductance value, and construct the resistor of the power supply circuit according to the required resistance value; An inductor-resistor combination module, used to construct an inductor-resistor package layout of the inductor and the resistor, analyze the electromagnetic interference of the inductor-resistor package layout, and when the electromagnetic interference meets the preset electromagnetic interference standard, package the inductor and the resistor based on the inductor-resistor package layout to obtain an integrated inductor-resistor component; A circuit load analysis module, used to determine a load current range and a load response requirement of the power supply circuit, and determine a Hall effect sensor of the power supply circuit according to the sampling requirement, the load current range and the load response requirement; A sampling circuit construction module, used to define sampling circuit parameters of the power supply circuit according to the Hall effect sensor, wherein the sampling circuit parameters include signal gain, resolution, sampling rate and digital filter level, configure a parameter adaptive algorithm of the sampling circuit parameters, and construct an adaptive sampling circuit of the power supply circuit according to the parameter adaptive algorithm and the Hall effect sensor; The circuit current sampling module is used to calculate the parasitic inductance and current waveform of the adaptive sampling circuit. When the parasitic inductance and current waveform meet the preset parasitic inductance standard value and current waveform threshold at the same time, the adaptive sampling circuit and the integrated inductor resistance component are integrated into a preset circuit board to obtain a target current sampling circuit board. The current sampling of the power supply circuit is performed through the target current sampling circuit board to obtain a sampling result.

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