TWI761750B - Automatic performance analysis system and method thereof for analog circuits - Google Patents

Abstract

An automatic performance analysis method includes: providing a computer-aided analysis tool, with selecting and inputting a target analog circuit therein; loading a topology corresponding to the selected target analog circuit; inputting a circuit specification corresponding to the selected target analog circuit and judging whether the circuit specification to meet original conditions; returning to input a new circuit specification if failing to meet the original conditions; or, generating a calculated circuit netlist if meeting the original conditions; inputting the calculated circuit netlist to a simulation software to generate a simulation result; judging whether the simulation result to meet the original conditions; returning to input an adjusted transistor specification to the circuit netlist if failing to meet the original conditions; generating a simulated circuit netlist if meeting the original conditions.

Description

Analog circuit performance automatic analysis system and method

The present invention relates to an analog circuit performance automatic analysis system and method; more particularly, to a simplified analog circuit performance automatic analysis system and method.

For example, conventional circuit design simulation methods and systems, such as the invention patent application of the Republic of China Patent Publication No. TW-201610733 "Simulation System for Estimating Self-heating Characteristics of Circuits and Design Method Therefor", discloses a circuit design A simulation method and a system thereof, which are methods for designing a semiconductor circuit using a circuit simulation tool executed by a computer.

Continuing from the above, the simulation method of the aforementioned No. TW-201610733 includes: calculating the power consumption of the components of the semiconductor circuit by the circuit simulation tool; set up a thermal network connection table for the semiconductor circuit; use the circuit simulation tool to simulate the semiconductor circuit with the thermal network connection table to detect the temperature of each of the components; and the The thermal network connection table includes thermal capacitance information for each of these components.

Another conventional circuit design simulation method and system, such as the invention patent application of the Republic of China Patent Publication No. TW-201145061 "Hspice Compatible Equivalent Circuit Simulation System and Method", which also discloses a circuit design simulation method and system . The simulation system includes a data acquisition module, a computer data storage unit, a parameter checking module, a function generation The module and an equivalent circuit generating module.

Continuing from the above, the simulation method of the aforementioned No. TW-201145061 includes: the data acquisition module is used for reading an N-port circuit system data file in Touchstone format from the computer data storage unit, and obtaining the N-port circuit system data from the computer data storage unit. Obtain an S-parameter matrix from the file; the parameter checking module is used to check whether all the S-parameters in the S-parameter matrix meet the passive characteristics of the circuit; the function generation module is used to set the extremum required to generate the rational number function of the S-parameter - the number of residual values and the systematic error; the equivalent circuit generation module is used to perform a vector fitting algorithm based on the number of extrema-residual values to generate a rational number function matrix of S-parameters; and simulate and synthesize an Hspice compatible matrix according to the rational number function matrix Equivalent Circuit.

Another conventional circuit design simulation method and system, such as the invention patent of the Republic of China Patent Publication No. TW-I620082 "Behavior Simulation Method and System for Design of Temperature Sensing Circuit with Digital Output", which also discloses a temperature sensing Behavioral simulation methods for circuit design.

Continuing from the above, the behavioral simulation method of the design of the temperature sensing circuit in the aforementioned No. TW-I620082 includes: constructing a mathematical structure of the temperature sensing circuit, and the mathematical structure of the temperature sensing circuit is suitable for a behavioral simulation software (eg Simulink) is executed, and the mathematical structure of the temperature sensing circuit includes a mathematical structure of several components; select at least one mathematical structure of a specified component in the mathematical structure of the temperature sensing circuit; and then select to use an advanced simulation software (for example: Hspice) or a Performing a simulation calculation on the measured data to obtain a specified element mathematical structure of the mathematical structure of the temperature sensing circuit to obtain a specified element temperature model; and the behavioral simulation software uses the specified element temperature model in combination with the temperature sensing circuit mathematical structure to perform a behavioral simulation calculation , in order to quickly obtain a preliminary simulation data and its digital output.

However, the circuit design simulation methods of the aforementioned ROC Patent Publication No. TW-201610733, Publication No. TW-201145061, and Publication No. TW-I620082 do not disclose how to further simplify In order to simplify the simulation work and reduce the simulation time, there must be a need to simplify the simulation work of the semiconductor circuit design and reduce the simulation time. The aforementioned patent application is only for reference of the technical background of the present invention and to illustrate the current state of technological development, and is not intended to limit the scope of the present invention.

In view of this, in order to meet the above-mentioned technical problems and needs, the present invention provides an analog circuit performance automatic analysis system and method thereof, which provides at least one computer-aided analysis tool, and selects and inputs at least one target analog circuit; selects and inputs at least one Circuit topology, and the circuit topology corresponds to the target analog circuit; select and input at least one circuit specification, and the circuit specification corresponds to the target analog circuit, and determine whether the circuit specification of the target analog circuit meets the original conditions; When the original condition is met, return to re-input at least one new circuit specification; if the original condition is met, generate at least one calculated circuit netlist; input the calculated circuit netlist into a simulation software for simulation, and Generate at least one simulation result; determine whether the simulation result meets the original specification; if it does not meet the original specification, return and re-enter at least one adjusted transistor specification into the circuit netlist; if it does not meet the original specification , then at least one simulated netlist is generated, so compared with the conventional circuit design simulation method and the system thereof, the purpose of automatic analysis of analog circuit performance, simplification of semiconductor circuit design simulation operation and reduction of simulation operation time can be achieved.

The main purpose of the present invention is to provide an analog circuit performance automatic analysis system and method thereof, which provide at least one computer-aided analysis tool, and select and input at least one target analog circuit; select and input at least one circuit topology, and the circuit topology corresponds to the target analog circuit; select to input at least one circuit specification, and the circuit specification corresponds to the target analog circuit, and judge whether the circuit specification of the target analog circuit meets the original condition; if the original condition is not met, return to the new Input at least one new circuit specification; if the original condition is met, at least one calculated circuit netlist will be generated; The calculated circuit netlist is input to a simulation software for simulation, and at least one simulation result is generated; it is judged whether the simulation result conforms to the original specification; if it does not meet the original specification, it returns to re-input at least one adjusted transistor The specification is added to the circuit netlist; if the original specification is not met, at least one simulated netlist is generated, so as to achieve the effects of automatic analysis of analog circuit performance, simplification of semiconductor circuit design simulation operations, and reduction of simulation operation time.

In order to achieve the above-mentioned purpose, the method for automatic analysis of the performance of the analog circuit according to the preferred embodiment of the present invention includes:

Provide at least one computer-aided analysis tool, and select to input at least one target analog circuit;

selecting and inputting at least one circuit topology, and the circuit topology corresponds to the target analog circuit;

Select and input at least one circuit specification, and the circuit specification corresponds to the target analog circuit, and determine whether the circuit specification of the target analog circuit meets the original condition;

If the original condition is not met, go back and re-enter at least one new circuit specification; or

If the original condition has been met, at least one calculated circuit netlist is generated;

inputting the calculated circuit netlist to a simulation software for simulation, and generating at least one simulation result;

determine whether the simulation result conforms to the original specification; and

If the original specification is not met, go back and re-enter at least one adjusted transistor specification into the circuit netlist; or

If the original specification has been met, at least one simulated netlist is generated.

In order to achieve the above-mentioned purpose, the analog circuit performance automatic analysis system of the preferred embodiment of the present invention includes:

A computer-aided analysis tool for selecting input at least one target analog circuit;

at least one circuit topology that is selected for input to the computer-aided analysis tool, and the circuit topology corresponds to the target analog circuit;

at least one circuit specification, which is selected and input to the computer-aided analysis tool, and the circuit specification corresponds to the target analog circuit, and it is judged whether the circuit specification of the target analog circuit meets the original conditions; and

a simulation software for inputting and simulating at least one calculated circuit netlist, and generating at least one simulation result;

When judging whether the circuit specification of the target analog circuit meets the original condition, if the original condition is not met, return to re-input at least one new circuit specification; or, if the original condition has been met, generate the Calculate the circuit netlist; and

If the original specification is not reached, return and re-enter at least one adjusted transistor specification into the circuit netlist; or, if the original specification has been achieved, generate at least one simulated netlist.

The analog circuit of the preferred embodiment of the present invention can be selected from a low-dropout regulator analog circuit, a folded-cascode amplifier analog circuit, a buck-converter analog circuit, a boost-converter analog circuit or other analog circuits.

The calculated circuit netlist of the preferred embodiment of the present invention is calculated by the C programming language or other programming language with similar analog functions.

The simulation software of the preferred embodiment of the present invention is selected from Hspice or other software with similar simulation functions.

The preferred embodiment of the present invention employs at least one Tool Command Language [TCL].

S1‧‧‧First step

S2‧‧‧Second step

S3‧‧‧The third step

S4‧‧‧The fourth step

S5‧‧‧Step 5

S6‧‧‧Sixth step

S7‧‧‧Seventh step

Fig. 1 is a schematic block diagram of the flow chart of the method for automatic analysis of the performance of the analog circuit according to the preferred embodiment of the present invention.

Fig. 2 is a schematic flow chart of a method for automatically analyzing the performance of analog circuits according to a preferred embodiment of the present invention.

Figure 3: A schematic diagram of a circuit for simulating a first circuit, the system for automatically analyzing the performance of an analogous circuit and the method thereof according to the preferred embodiment of the present invention.

FIG. 4 : a schematic diagram of a circuit for simulating a second circuit by the analog circuit performance automatic analysis system and the method thereof according to the preferred embodiment of the present invention.

Fig. 5: a schematic diagram of a circuit for simulating a third circuit, the system for automatically analyzing the performance of an analogous circuit and the method thereof according to the preferred embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments will be exemplified below and described in detail in conjunction with the accompanying drawings, which are not intended to limit the present invention.

The analog circuit performance automatic analysis system and the method thereof according to the preferred embodiment of the present invention are suitable for automatic performance analysis of various analog circuits, such as: analog circuit performance analysis of low-dropout voltage regulators, analog circuit performance analysis of analog low-pass filters, The performance analysis of analog circuits such as amplifiers or the performance analysis of other analog circuits is not intended to limit the scope of application of the present invention.

FIG. 1 shows a block diagram of the flow chart of the method for automatically analyzing the performance of the analog circuit according to the preferred embodiment of the present invention; FIG. 2 shows the schematic flow chart of the method for automatically analyzing the performance of the analog circuit according to the preferred embodiment of the present invention. Referring to Figures 1 and 2, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S1: For example, when starting the simulation operation, at least one computer-aided analysis tool is provided by appropriate technical means. [computer-aided analysis tool], and select and input at least one target analog circuit with appropriate technical means.

Referring again to Figures 1 and 2, the analog circuit can be selected from a low-dropout regulator analog circuit, a folded-cascode amplifier analog circuit, a buck-converter analog circuit, a boost-converter analog circuit, or other analog circuits.

Referring again to Figures 1 and 2, the method for automatically analyzing the performance of analog circuits according to a preferred embodiment of the present invention includes step S2: for example, then, selecting input (loading) at least one circuit topology (topology of selected circuit], and the circuit topology corresponds to the target analog circuit.

Referring to Figures 1 and 2 again, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S3: for example, then, selecting and inputting at least one circuit specification by appropriate technical means, and the The circuit specification corresponds to the target analog circuit, and it is determined whether the circuit specification of the target analog circuit complies with the original condition of [reachable].

Referring to Figures 1 and 2 again, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S4: for example, if the original condition is not met, return to re-enter at least one new The circuit specification, such as the right side of the dashed box in Figure 2, indicates No; or, if the original condition is met, at least one calculated circuit netlist will be generated, such as the middle of the dashed box in Figure 2 indicates Yes.

Referring again to Figures 1 and 2, for example, the calculated circuit netlist or its related circuit netlist (circuit netlist) of the preferred embodiment of the present invention is written in C programming language or other programs with similar analog functions. Language is properly calculated.

Referring again to Figures 1 and 2, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S5: for example, then, inputting the calculated circuit netlist to a simulation software by appropriate technical means The simulation is performed, and at least one simulation result is generated, as shown by the dashed box in the lower part of FIG. 2 .

Referring again to Figures 1 and 2, for example, the simulation software in the preferred embodiment of the present invention is selected from Hspice or other software with similar simulation functions.

Referring to Figures 1 and 2 again, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S6: for example, then, it is determined whether the simulation result complies with the original specification, that is, the required specification. specification].

Referring to Figures 1 and 2 again, the method for automatically analyzing the performance of an analog circuit according to a preferred embodiment of the present invention includes step S7: for example, if the original specification is not reached, then return to re-input at least one Adjust the transistor specifications to the circuit netlist, as indicated by No on the left side of the frame with the dotted line in Figure 2; or, if the original specification has been met, generate at least one simulated netlist, as shown by the dotted line in Figure 2 The middle of the box is marked with Yes; finally, you can choose to end the simulation job.

Referring again to Figures 1 and 2, the analog circuit performance automatic analysis system and method thereof according to the preferred embodiment of the present invention can use at least one tool command language (Tool Command Language, TCL), which is used to call C programming language or Other programming languages with similar simulation functions, or their use to call Hspice or other software with similar simulation functions.

FIG. 3 discloses a circuit schematic diagram of the analog circuit performance automatic analysis system and the method for simulating the first circuit according to the preferred embodiment of the present invention. Please refer to FIG. 3 , the analog circuit performance automatic analysis system and the method thereof according to the preferred embodiment of the present invention are suitable for simulating boost-converter analog circuits.

FIG. 4 discloses a circuit schematic diagram of the analog circuit performance automatic analysis system and the method thereof applicable to the simulation of the second circuit according to the preferred embodiment of the present invention. Referring to FIG. 4 , the analog circuit performance automatic analysis system and the method thereof according to the preferred embodiment of the present invention are suitable for simulating a buck-converter analog circuit.

FIG. 5 discloses a circuit schematic diagram of the analog circuit performance automatic analysis system and the method for simulating the third circuit according to the preferred embodiment of the present invention. Referring to FIG. 5, the analog circuit of the preferred embodiment of the present invention is effective An automated analysis system and method thereof are suitable for simulating low dropout analog circuits.

The aforementioned preferred embodiment is only an example of the present invention and its technical features, and the technology of this embodiment can still be implemented in various substantially equivalent modifications and/or alternative ways; therefore, the scope of the right of the present invention is subject to the appended patent application The scope defined by the scope shall prevail. The copyright in this case is restricted to be used for the purposes of the ROC patent application.

S1‧‧‧First step

S2‧‧‧Second step

S3‧‧‧The third step

S4‧‧‧The fourth step

S5‧‧‧Step 5

S6‧‧‧Sixth step

S7‧‧‧Seventh step

Claims (10)

An automatic analysis method for analog circuit performance, comprising: providing at least one computer-aided analysis tool, and selecting and inputting at least one target analog circuit; selecting and inputting at least one circuit topology, and the circuit topology corresponds to the target analog circuit; selecting and inputting at least one A circuit specification, and the circuit specification corresponds to the target analog circuit, and it is judged whether the circuit specification of the target analog circuit meets the original condition; if the original condition is not met, return and re-enter at least one new circuit specification; if When the original condition has been met, generate at least one calculated circuit netlist; input the calculated circuit netlist to a simulation software for simulation, and generate at least one simulation result; determine whether the simulation result conforms to the original specification; If the original specification is not reached, return to re-input at least one adjusted transistor specification into the circuit netlist; and if the original specification is achieved, generate at least one simulated netlist. According to the automatic analysis method of analog circuit performance as described in item 1 of the claimed scope, the target analog circuit is selected from a low-dropout regulator analog circuit, a folded-cascode amplifier analog circuit, a buck-converter analog circuit or a boost-converter analog circuit. According to the automatic analysis method of analog circuit performance described in item 1 of the scope of the patent application, the calculated circuit netlist is calculated by C programming language or other programming languages with similar analog functions. According to the automatic analysis method of analog circuit performance described in item 1 of the scope of application, wherein the simulation software is selected from Hspice or other software with similar simulation functions. According to the automatic analysis of analog circuit performance described in item 1 of the scope of application analysis method, wherein at least one tool command language is used. An analog circuit performance automatic analysis system, which includes: a computer-aided analysis tool, which is used to select and input at least one target analog circuit; at least one circuit topology, which is selected and input to the computer-aided analysis tool, and the circuit topology corresponds to the target analog circuit; at least one circuit specification, which is selected and input to the computer-aided analysis tool, and the circuit specification corresponds to the target analog circuit, and it is judged whether the circuit specification of the target analog circuit meets the original conditions; and a simulation software , which is used to input and simulate at least one calculated circuit netlist, and generate at least one simulation result; when judging whether the circuit specification of the target analog circuit meets the original condition, if it does not meet the original condition, then Return to re-enter at least one new circuit specification; or, if the original condition is met, generate the calculated circuit netlist; and if the original specification is not met, return to re-enter at least one adjusted transistor specification to the circuit netlist; or, if the original specification has been met, generate at least one simulated netlist. According to the automatic analysis system of analog circuit performance described in item 6 of the patent application scope, the target analog circuit is selected from a low-dropout regulator analog circuit, a folded-cascode amplifier analog circuit, a buck-converter analog circuit or a boost-converter analog circuit. According to the automatic analysis system of analog circuit performance as described in item 6 of the scope of the patent application, the calculated circuit netlist is calculated by C programming language or other programming languages with similar analog functions. According to the automatic analysis system for analog circuit performance described in item 6 of the patent application scope, the simulation software is selected from Hspice or other software with similar simulation functions. According to the automatic analysis system of analog circuit performance as described in item 6 of the scope of the patent application, at least one tool command language (TCL) is used.

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