WO2023032786A1 - 多端子キャパシタの等価回路モデル作成方法、等価回路モデル作成プログラム、等価回路モデル作成プログラムを記憶した記憶媒体、シミュレーション方法およびシミュレーション装置 - Google Patents
多端子キャパシタの等価回路モデル作成方法、等価回路モデル作成プログラム、等価回路モデル作成プログラムを記憶した記憶媒体、シミュレーション方法およびシミュレーション装置 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000004088 simulation Methods 0.000 title claims description 49
- 230000003071 parasitic effect Effects 0.000 claims abstract description 15
- 239000000758 substrate Substances 0.000 claims description 30
- 230000006698 induction Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 53
- 230000001939 inductive effect Effects 0.000 description 33
- 238000004364 calculation method Methods 0.000 description 12
- 238000005259 measurement Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000009413 insulation Methods 0.000 description 4
- 101100136062 Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv) PE10 gene Proteins 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/64—Testing of capacitors
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
Definitions
- the present disclosure relates to an equivalent circuit model creation method for a multi-terminal capacitor, an equivalent circuit model creation program, a storage medium storing the equivalent circuit model creation program, a simulation method, and a simulation apparatus.
- Patent Document 1 discloses a method for deriving an equivalent circuit model of a capacitor.
- the method disclosed in Patent Document 1 is intended for a two-terminal capacitor. That is, the method disclosed in Patent Document 1 is based on the premise of deriving an equivalent circuit model for a two-terminal capacitor.
- the present invention has been made in view of the above, and its object is to provide an equivalent circuit model creation method and an equivalent circuit model creation capable of deriving an equivalent circuit model of a multi-terminal capacitor having three or more terminals.
- An object of the present invention is to provide a program, a storage medium storing an equivalent circuit model creation program, a simulation method, and a simulation apparatus.
- an equivalent circuit model creation method provides a configuration in which positive electrode terminal rows and negative electrode terminal rows are alternately arranged in parallel.
- An equivalent circuit model creation method for creating an equivalent circuit model of a multi-terminal capacitor having a first step of measuring the S parameter of the multi-terminal capacitor, and a second step of deriving the impedance of the entire multi-terminal capacitor based on the above; a third step of creating a two-terminal equivalent circuit model from the impedance of the entire multi-terminal capacitor derived in the second step; A fourth step of deriving an equivalent circuit model of the unit cell from the two-terminal equivalent circuit model created in the three steps, and the equivalent circuit model of the unit cell and the equivalent circuit model of the parasitic components derived in the fourth step.
- an equivalent circuit model creation program has a configuration in which a positive electrode terminal row and a negative electrode terminal row are alternately arranged in parallel.
- Equivalent circuit model creation program for creating an equivalent circuit model of a multi-terminal capacitor having a second step of deriving the impedance of the entire multi-terminal capacitor based on the measured value; and a third step of creating a two-terminal equivalent circuit model from the impedance of the entire multi-terminal capacitor derived in the second step.
- a storage medium has a configuration in which positive electrode terminal rows and negative electrode terminal rows are alternately arranged in parallel.
- a storage medium storing an equivalent circuit model creation program for creating an equivalent circuit model of a terminal capacitor, wherein a computer stores a first step of measuring the S parameter of the multi-terminal capacitor and the S parameters measured in the first step.
- a second step of deriving the impedance of the entire multi-terminal capacitor based on the measured values of the parameters and a third step of creating a two-terminal equivalent circuit model from the impedance of the entire multi-terminal capacitor derived in the second step.
- a fifth step of creating a two-dimensional grid-like topology by combining an equivalent circuit model, and a sixth step of setting terminals of the multi-terminal capacitor at nodes of the topology of the two-dimensional grid created in the fifth step. is a storage medium storing an equivalent circuit model creation program for executing .
- a simulation method utilizes an equivalent circuit model of a multiterminal capacitor created using the equivalent circuit model creation method described above, Characteristics of a terminal capacitor or characteristics of a circuit including said multi-terminal capacitor are calculated.
- a simulation apparatus utilizes an equivalent circuit model of a multiterminal capacitor created using the equivalent circuit model creation method described above to Characteristics of a terminal capacitor or characteristics of a circuit including said multi-terminal capacitor are calculated.
- an equivalent circuit model of a capacitor having three or more terminals can be derived.
- FIG. 1 is a flow chart showing an example of a method for creating an equivalent circuit model of a multi-terminal capacitor according to the present disclosure.
- FIG. 2 is a plan view showing a configuration example of a multi-terminal capacitor.
- FIG. 3 is a diagram showing a cross section of part of FIG.
- FIG. 4 is an enlarged view showing a part of the cross section of the multi-terminal capacitor.
- FIG. 5 is an enlarged view showing a part of the cross section of the multi-terminal capacitor.
- FIG. 6 is a diagram showing a jig for measuring S parameters.
- FIG. 7 is a diagram showing a cross section of part of FIG.
- FIG. 8 is a diagram showing a cross section of part of FIG. FIG.
- FIG. 9 is a diagram showing an equivalent circuit of a substrate including multi-terminal capacitors.
- FIG. 10 is a diagram showing the basic form of an equivalent circuit.
- FIG. 11 is a diagram showing an equivalent circuit for fitting the low frequency range.
- FIG. 12 is a diagram showing an equivalent circuit for fitting the entire frequency band including low frequencies.
- FIG. 13 is a table showing the values of each element included in the circuits shown in FIGS. 10-12.
- FIG. 14 is a diagram showing an example of changes in impedance with respect to frequency.
- FIG. 15 is a diagram showing an example of changes in equivalent series resistance with respect to frequency.
- FIG. 16 is a flowchart illustrating an example of fitting processing.
- FIG. 17 is a diagram showing examples of measured values and simulated values for impedance and equivalent series resistance.
- FIG. 17 is a diagram showing examples of measured values and simulated values for impedance and equivalent series resistance.
- FIG. 18 is a diagram showing examples of measured values and simulated values for impedance and equivalent series resistance.
- FIG. 19 is a diagram showing examples of measured values and simulated values for impedance and equivalent series resistance.
- FIG. 20 is a diagram showing an example of a unit cell.
- FIG. 21 is a diagram showing an image of the overall impedance.
- FIG. 22 is a diagram showing an example of arrangement of unit cells corresponding to the overall impedance.
- FIG. 23 is a diagram showing a state in which unit cell impedances are arranged between nodes of a two-dimensional lattice.
- FIG. 24 is a diagram showing an example of an equivalent circuit model of a multi-terminal capacitor.
- FIG. 25 is a table showing an example of symbols representing equivalent circuit models of multi-terminal capacitors.
- FIG. 25 is a table showing an example of symbols representing equivalent circuit models of multi-terminal capacitors.
- FIG. 26 is a diagram showing a multi-terminal capacitor with a terminal arrangement of 3 rows and 3 columns.
- 27 is a diagram showing a multi-terminal capacitor represented by the symbols shown in FIG. 25.
- FIG. FIG. 28 is a diagram showing a multi-terminal capacitor having a terminal arrangement of 3 rows and 5 columns.
- FIG. 29 is a diagram showing an equivalent circuit of a substrate including multi-terminal capacitors.
- FIG. 30 is a diagram showing simulation results of S parameters.
- FIG. 31 is a diagram illustrating an example of time domain simulation.
- FIG. 32 is a diagram showing changes in current values of the current sources in FIG.
- FIG. 33 is a diagram showing an example of changes in load voltage.
- FIG. 34 is a diagram illustrating a configuration example of a simulation device of the present disclosure;
- FIG. 1 is a flow chart showing an example of a method for creating an equivalent circuit model of a multi-terminal capacitor according to the present disclosure.
- a multi-terminal capacitor is mounted on a substrate, and S-parameters of the multi-terminal capacitor are measured (step ST1).
- a jig having a substrate on which a capacitor is mounted is prepared, and the S parameter is measured using the jig.
- step ST2 the impedance of the entire multi-terminal capacitor is calculated based on the S parameters measured in step ST1 (step ST2). Further, a two-terminal equivalent circuit model is created from the overall impedance calculated in step ST2 (step ST3). At this time, a two-terminal equivalent circuit model is created by fitting processing. The fitting process will be described later.
- An equivalent circuit model of the unit cell is derived from the two-terminal equivalent circuit model created in step ST3 (step ST4). At this time, based on the periodic structure, an equivalent circuit model of the unit cell is derived from the two-terminal equivalent circuit model.
- step ST5 the equivalent circuit model of the unit cell derived in step ST4 and the equivalent circuit model of the parasitic components are combined to create a two-dimensional grid topology. Then, the terminals of the multi-terminal capacitor are set at the nodes of the two-dimensional grid created in step ST5 (step ST6).
- FIG. 2 is a plan view showing a configuration example of a multi-terminal capacitor.
- FIG. 3 is a cross-sectional view taken along line A1-A1 in FIG. 4 and 5 are enlarged views showing a part of the cross section of the multi-terminal capacitor.
- the multi-terminal capacitor 1 of this example is formed on the substrate 10 .
- Negative electrodes NE1 and NE2 and a positive electrode PE1 are formed on the substrate 10 .
- the X-axis direction, Y-axis direction and Z-axis direction which are orthogonal to each other, are defined.
- the longitudinal direction in which the positive electrode PE1, the negative electrodes NE1 and NE2 extend is defined as the Y-axis direction.
- the negative electrode NE1, the positive electrode PE1, and the negative electrode NE2 are arranged in this order. This arrangement direction is defined as the X-axis direction.
- the depth direction of the substrate 10 is defined as the Z-axis direction.
- the positive electrode PE1, the negative electrodes NE1 and NE2 extend parallel to each other in the Y-axis direction. Therefore, the positive electrode PE1 and the negative electrodes NE1 and NE2 are arranged in a striped pattern in plan view.
- Negative electrode NE1 has terminals T1, T2 and T3.
- Negative electrode NE2 has terminals T4, T5 and T6.
- Positive electrode PE1 has terminals T7, T8 and T9.
- the positive electrode PE1 has extensions PE10 and PE20 extending in the X-axis direction toward the negative electrodes NE1 and NE2.
- Negative electrode NE1 has extension NE10 extending in the X-axis direction toward positive electrode PE1.
- Negative electrode NE2 has an extension NE20 extending in the X-axis direction toward positive electrode PE1.
- the extensions PE10 and the extensions NE10 are alternately arranged in the Y-axis direction.
- the extensions PE20 and the extensions NE20 are alternately arranged in the Y-axis direction.
- a trench forming region VH1 is present in the region between the positive electrode PE1 and the negative electrode NE1.
- a trench formation region VH2 is present between the positive electrode PE1 and the negative electrode NE2.
- Via holes extending in the Z-axis direction are provided in portions of the extensions PE10, NE10, PE20, and NE20 located in the trench formation regions VH1 and VH2.
- via holes V11 and V12 are provided in the portion of extension PE20 located in trench formation region VH2
- via holes V21 and V22 are provided in the portion of extension NE20 located in trench formation region VH2.
- FIG. 4 is an enlarged view showing the portion of the trench formation region VH2 in the cross section taken along the line A1-A1 in FIG.
- via holes V11 and V12 are connected to the positive electrode PETR inside substrate 10 .
- the extension PE20 and the positive electrode PETR are electrically connected.
- FIG. 5 is an enlarged view of the portion of the trench formation region VH2 in the cross section of the A2-A2 portion in FIG. Referring to FIG. 5, via holes V21 and V22 are connected to the negative electrode NETR inside the substrate 10. As shown in FIG. This electrically connects the extension NE20 and the negative electrode NETR.
- the positive electrode PETR and the negative electrode NETR have portions extending in the Z-axis direction along trenches TR11, TR12, TR21, and TR22 extending in the Z-axis direction.
- the area of the portion where the positive electrode PETR and the negative electrode NETR face each other can be maximized, and the capacitance value between the positive electrode PETR and the negative electrode NETR can be maximized.
- a dielectric is provided between the positive electrode PETR and the negative electrode NETR.
- FIGS. 2 to 5 show examples of multi-terminal capacitors made of silicon capacitors, in which columns of positive electrodes and columns of negative electrodes are arranged in parallel.
- a multi-terminal capacitor such as a laminated ceramic capacitor may be used as long as the columns of positive electrodes and the columns of negative electrodes are arranged in parallel.
- FIG. 6 is a diagram illustrating a method of measuring S parameters of a multiterminal capacitor.
- FIG. 6 is a diagram showing a jig for measuring S parameters.
- FIG. 7 is a cross-sectional view taken along line B1-B1 in FIG.
- FIG. 8 is a view showing a cross section along the B2-B2 section in FIG.
- the jig 11 has a substrate 10a.
- the substrate 10 a is a substrate for evaluating the multiterminal capacitor 1 .
- a multi-terminal capacitor 1 is mounted on the substrate 10a.
- the multi-terminal capacitor 1 has nine terminals T1 to T9. Terminals T1 to T3 and terminals T4 to T6 arranged in the Y-axis direction are electrically connected to the negative pole inside the substrate 10a. Terminals T7 to T9 arranged in the Y-axis direction are electrically connected to the positive electrode inside the substrate 10a.
- the terminal T2 is electrically connected to the negative electrode NE inside the substrate 10a through a via hole V2.
- the terminal T2 is not connected to the positive electrode PE inside the substrate 10a.
- the terminal T5 is electrically connected to the negative electrode NE inside the substrate 10a through a via hole V5.
- the terminal T5 is not connected to the positive electrode PE inside the substrate 10a.
- Terminal T8 is electrically connected to positive electrode PE inside substrate 10a through via hole V8.
- a row of terminals T1 to T3 arranged in a straight line, a row of terminals T4 to T6 arranged in a straight line, and a row of terminals T7 to T9 arranged in a straight line are arranged parallel to each other.
- the row of terminals T7-T9 is sandwiched between the row of terminals T1-T3 and the row of terminals T4-T6.
- a row of terminals T1 to T3 is provided on one side of the row of terminals T7 to T9 in the X-axis direction, and a row of terminals T4 to T6 is provided on the other side. Therefore, the multi-terminal capacitor 1 has a structure in which columns of electrodes connected to positive electrodes and columns of electrodes connected to negative electrodes are alternately provided.
- the board 10a has ports PO1 and PO2.
- a port PO1 is provided on one side of the multi-terminal capacitor 1 in the Y-axis direction, and a port PO2 is provided on the other side.
- the port PO1 has a positive electrode PO11 and a negative electrode PO12.
- the port PO2 has a positive electrode PO21 and a negative electrode PO22.
- a resistor RA is electrically connected between the positive electrode PO11 and the negative electrode PO12 of the port PO1.
- a resistor RB is electrically connected between the positive electrode PO21 and the negative electrode PO22 of the port PO2.
- Resistors RA and RB are, for example, 50 ⁇ chip resistors.
- the positive electrode PO11 of the port PO1 is electrically connected to the positive electrode PE inside the substrate 10a through the via hole VP1.
- a negative electrode PO12 of the port PO1 is electrically connected to a negative electrode NE inside the substrate 10a by a via hole VN1.
- the negative electrode PO12 is not connected to the positive electrode PE inside the substrate 10a.
- the positive pole PO21 of the port PO2 is electrically connected to the positive pole PE inside the substrate 10a
- the negative pole PO22 of the port PO2 is electrically connected to the negative pole NE inside the board 10a.
- board mounting using the jig 11 allows the impedance when the positive terminal and the negative terminal are electrically connected to be reflected in the equivalent circuit model.
- the characteristics due to the parasitic components in the connecting portion of the terminals can be reflected in the equivalent circuit model.
- FIG. 9 is a diagram showing an equivalent circuit of the substrate 10a including the multi-terminal capacitor 1.
- the positive pole PO11 of the port PO1 is electrically connected to the positive pole PE.
- a positive electrode PO21 of the port PO2 is electrically connected to the positive electrode PE.
- the negative pole PO12 of the port PO1 is electrically connected to the negative pole NE.
- the negative pole PO22 of the port PO2 is electrically connected to the negative pole NE.
- Terminals T1 to T6 are negative terminals and are electrically connected to the negative electrode NE.
- Terminals T7 to T9 are positive terminals and are electrically connected to positive electrode PE.
- S parameters are measured according to the shunt-through method.
- a network analyzer is used to measure the S parameters.
- S-parameters are also called scattering matrices or scattering parameters, and are parameters that express the transmitted/reflected power characteristics of a circuit network.
- the impedance value Z is derived by the following formula (1).
- Ztotal ( Z0 /2) ⁇ S21 /(1 ⁇ S21 ) ⁇ (1)
- Z0 in the above equation (1) is the characteristic impedance.
- S21 is the power gain when the source and load impedances are Z0 .
- the fitting process is a process of deriving an equivalent circuit corresponding to the measured value of the impedance value Z total of the entire circuit.
- the fitting process is a process for matching the simulated values with the measured values.
- an equivalent circuit is derived by combining resistive elements, inductive elements, and capacitive elements in order to match impedance simulation values based on a SPICE (Simulation Program with Integrated Circuit Emphasis) model with measured values.
- FIG. 10 to 12 are diagrams showing examples of equivalent circuits for the measured impedance Z total of the entire circuit.
- FIG. 10 is a diagram showing the basic form of an equivalent circuit.
- the equivalent circuit shown in FIG. 10 includes resistive elements R1 and R3, a capacitive element C1, and an inductive element L2.
- a capacitive element C1, an inductive element L2, and a resistive element R3 are connected in series.
- a resistive element R1 is connected in parallel with the capacitive element C1.
- the resistive element R1 is an insulation resistor.
- FIG. 11 is a diagram showing an equivalent circuit for fitting the low frequency range.
- the equivalent circuit shown in FIG. 11 includes resistive elements R1, R3-R6, capacitive elements C1, C4-C6, and an inductive element L2.
- a capacitive element C1, an inductive element L2, and resistive elements R3, R4, R5, and R6 are connected in series.
- a resistance element R1 is connected in parallel to the capacitance element C1, a capacitance element C4 is connected to the resistance element R4, a capacitance element C5 is connected to the resistance element R5, and a capacitance element C6 is connected to the resistance element R6 in parallel.
- the resistive element R1 is an insulation resistor.
- FIG. 12 is a diagram showing an equivalent circuit for fitting the entire frequency band including low frequencies.
- the equivalent circuit shown in FIG. 12 includes resistive elements R1, R3-R8, capacitive elements C1, C4-C6, and inductive elements L2, L7, L8.
- a capacitive element C1, an inductive element L2, and resistive elements R3, R4, R5, R6, R7, and R8 are connected in series.
- Capacitive element C1 has resistive element R1, resistive element R4 has capacitive element C4, resistive element R5 has capacitive element C5, resistive element R6 has capacitive element C6, resistive element R7 has inductive element L7, and inductive element R8 has Elements L8 are connected in parallel.
- the resistive element R1 is an insulation resistor.
- FIG. 13 is a table showing the values of each element included in the circuits shown in FIGS. 10-12. That is, the table of FIG. 13 shows examples of the capacitance value [F] of each capacitive element C, the inductance value [H] of each inductive element L, and the resistance value [ ⁇ ] of each resistance element R.
- the numerals 1 to 8 in the "No.” column on the leftmost side of the table and the symbols combined with the capacitive element C, the inductive element L, or the resistive element R are the elements included in the circuits shown in FIGS. 10 to 12, respectively.
- the capacitance value of capacitive element C1 is 8.455 ⁇ 10 ⁇ 8 [F]
- the inductance value of inductive element L2 is 1.005 ⁇ 10 ⁇ 11 [H]
- the resistance value of resistive element R1 is 1.000 ⁇ 10 8 [ ⁇ ]
- the resistance value of the resistance element R3 is 9.780 ⁇ 10 ⁇ 3 [ ⁇ ].
- the values of other elements are also as shown in the table of FIG. Note that the circuits shown in FIGS. 10 to 13 are examples, and other elements may be employed.
- FIG. 14 is a diagram showing an example of changes in impedance with respect to frequency.
- the horizontal axis is frequency [Hz] and the vertical axis is impedance [ ⁇ ].
- the impedance simulation value SM1 by the SPICE model with the measured value ME1. That is, an equivalent circuit is created by connecting the capacitive element C, the inductive element L, and the resistive element R so that the simulated value SM1 of the SPICE model matches the measured value ME1.
- FIG. 15 is a diagram showing an example of changes in equivalent series resistance (ESR) with respect to frequency.
- ESR equivalent series resistance
- the horizontal axis is frequency [Hz]
- the vertical axis is equivalent series resistance [ ⁇ ].
- ESR equivalent series resistance
- the simulation value SM2 of the equivalent series resistance by the SPICE model can be matched with the measured value ME2. That is, an equivalent circuit is created by connecting the capacitive element C, the inductive element L, and the resistive element R so that the simulated value SM2 of the SPICE model matches the measured value ME2.
- FIG. 16 is a flowchart showing an example of fitting processing.
- a circuit model is created to which resistive elements, inductive elements or capacitive elements are added (step ST31). Then, a simulation is performed using a circuit model to which resistive elements, inductive elements, or capacitive elements are added (step ST32).
- step ST33 it is determined whether or not the simulation values obtained by the circuit model with added resistive elements, inductive elements, or capacitive elements match the measured values. If the result of determination in step ST33 is that the simulated value matches the measured value (Yes in step ST33), a circuit model corresponding to the simulated value is created as an equivalent circuit model corresponding to the measured impedance value of the entire circuit. (Step ST34).
- step ST33 the process returns to step ST31 to create a new circuit model with additional resistive elements, inductive elements, or capacitive elements.
- a new circuit model is simulated (step ST32), and it is determined whether or not the simulation value of the circuit model matches the measured value (step ST33). The above process is repeated until the circuit model simulated values match the measured values. By repeating the above process, the simulation value can be gradually brought closer to the measurement value, and finally the simulation value can match the measurement value.
- a simulation value that matches the measured value is used as an equivalent circuit model.
- step ST33 of FIG. 16 whether or not the simulation value matches the measurement value may be determined, for example, as follows. That is, the measured values are not constant, but have a width of change as shown in FIGS. 14 and 15. FIG. It can be determined that the simulated value matches the measured value when the entire simulated value is included in the range of variation of the measured value. That is, as shown in FIG. 14, the measured value ME1 of the impedance has a range of variation, and if the entirety of the simulated value SM1 is included in the range of variation of the measured value ME1, the simulated value matches the measured value. , can be determined. Further, as shown in FIG. 15, the measured value ME2 of the equivalent series resistance (ESR) has a range of variation. It can be determined that it matches the measured value.
- ESR equivalent series resistance
- a frequency range may be delimited, and it may be determined that the simulation value matches the measurement value when the simulation value is included in the variation range of the measurement value within that frequency range. For example, if the frequency band to be used is known in advance, a frequency range may be delimited, and it may be determined whether or not the simulated values match the measured values within that frequency range.
- 17 to 19 are diagrams showing examples of measured values and simulated values for impedance and equivalent series resistance (ESR). 17 to 19, the horizontal axis is frequency [Hz] and the vertical axis is impedance [ ⁇ ].
- the simulation value SM1 is made to match the impedance measurement value ME1
- the simulation value SM2 is changed to the equivalent series resistance (ESR) measurement value ME2. , that is, fitting processing is performed.
- the waveforms of the simulation values SM1 and SM2 are matched with the measured values ME1 and ME2 by sequentially combining the elements from the low frequency band to the high frequency band.
- FIG. 17 corresponds to the equivalent circuit of FIG.
- the equivalent circuit of FIG. 10 is an equivalent circuit using one resistive element as the equivalent series resistance and one inductive element as the equivalent series inductance. Since the equivalent series resistance has a small number of elements, as shown in FIG. 17, it has a flat characteristic without frequency dependence.
- FIG. 18 corresponds to the equivalent circuit of FIG.
- the equivalent circuit of FIG. 11 is an equivalent circuit obtained by adding three CR parallel circuits in series to the equivalent circuit of FIG. As shown in FIG. 18, the frequency characteristic of the equivalent series resistance in the low range is reflected.
- FIG. 19 corresponds to the equivalent circuit of FIG.
- the equivalent circuit of FIG. 12 is an equivalent circuit obtained by adding two LR parallel circuits in series to the equivalent circuit of FIG. As shown in FIG. 19, frequency characteristics of impedance and equivalent series resistance in a frequency region higher than the self-resonant frequency are reflected.
- the accuracy of matching the simulation value to the measured value is higher in the case of FIG. 18 with the addition of the equivalent circuit of FIG. 11 than in the case of FIG. 17 with the addition of the equivalent circuit of FIG.
- the accuracy of matching the simulation value to the measured value is higher in the case of FIG. 19 with the addition of the equivalent circuit of FIG. 12 than in the case of FIG. 18 with the addition of the equivalent circuit of FIG.
- a resistive element, an inductive element, and a capacitive element it is possible to improve the accuracy of matching the measured value with the simulated value.
- FIG. 20 is a diagram showing an example of a unit cell.
- the unit cell shown in FIG. 20 includes resistive elements R1, R3 to R9, capacitive elements C1, C4, C5, C7, C8, and inductive elements L2, L7 to L10.
- a capacitive element C1, an inductive element L2, and resistive elements R3, R4, R5, R6, R7, R8, and R9 are connected in series.
- Capacitive element C1 has resistive element R1, resistive element R4 has capacitive element C4, resistive element R5 has capacitive element C5, resistive element R6 has inductive element L7, resistive element R7 has inductive element L8, and resistive element R8 has a capacitance. Element C7 and inductive element L9 are connected in parallel, and capacitive element C8 and inductive element L10 are connected in parallel to resistive element R9.
- the resistive element R1 is an insulation resistor.
- FIG. 21 is a diagram showing an image of the overall impedance Z total .
- FIG. 22 is a diagram showing an example of arrangement of unit cells corresponding to the overall impedance Z total .
- one terminal of the overall impedance Z total is positive (+) and the other is negative (-).
- the overall impedance Z total is converted into an array of m rows ⁇ n columns (m and n are natural numbers).
- Z unit K ⁇ Z total ... (2)
- the unit cell impedance Z unit can be derived by simple calculation from the overall impedance Z total .
- the resistance value R unit of the unit cell is given by the following formula (3)
- the induction value L unit of the unit cell is given by the following formula (4)
- the capacitance value C unit of the unit cell is given by the following formula (5).
- R unit K R total (3)
- L unit K L total (4)
- C unit C total /K (5)
- R total is the resistance value of the resistive element before division into unit cells
- L total is the inductance value of the inductive element before division into unit cells
- C total is the capacitance value of the capacitive element before division into unit cells.
- the resistance value and the induction value are multiplied by K, and the capacitance value is multiplied by 1/K. In this way, the value of each element is multiplied by K or 1/K and distributed to the unit cells.
- FIG. 23 is a diagram showing a state in which unit cell impedances are arranged between nodes of a two-dimensional lattice arranged in m rows ⁇ n columns.
- This example shows a state in which impedances Z unit1 to Z unit6 of six unit cells are arranged between nodes S1 to S9 arranged in 3 rows ⁇ 3 columns.
- Three nodes S7-S9 correspond to positive poles.
- Nodes S1-S3 and S4-S6 correspond to negative poles.
- FIG. 24 is a diagram showing an example of an equivalent circuit model of a multi-terminal capacitor.
- the equivalent circuit model of FIG. 24 combines the impedances Z unit1 to Z unit6 of the unit cells and the equivalent circuit model of the parasitic component PP in a two-dimensional grid. is obtained by setting ⁇ T9.
- the parasitic component PP is a parasitic component due to the board on which the multi-terminal capacitor is mounted.
- the parasitic component PP is, for example, a series connection of a resistive element and an inductive element.
- an equivalent circuit model reflecting parasitic components such as wiring inductance and stray capacitance can be created.
- an equivalent circuit model having a topology corresponding to the structure of the multi-terminal capacitor can be provided.
- FIG. 25 is a table showing an example of symbols representing equivalent circuit models of multi-terminal capacitors.
- FIG. 25 shows symbols for each cell with two types of poles, positive P and negative N.
- Item (a) in FIG. 25 is a symbol indicating cells inside the array, that is, cells other than corners and ends.
- Item (b) in FIG. 25 is a symbol indicating a cell at an end portion other than a corner portion, which is a cell with a pole different from that on both sides.
- Item (c) in FIG. 25 is a symbol indicating a cell at an end portion other than a corner portion and having the same type of pole as both neighboring cells.
- Item (d) in FIG. 25 is a symbol indicating a corner cell.
- the symbols of the positive electrode P are a white rectangle RE0, a rectangle RE1 arranged in the upper right corner of the rectangle RE0, a hook H1 extending from the rectangle RE1 toward the lower left corner of the rectangle RE0, and a rectangle RE0. It is composed of a black rectangle TS arranged outside and a line segment TSS connecting the rectangle RE0 and the rectangle TS.
- a black rectangle TS indicates a terminal connected to an adjacent cell.
- Rectangle TS is four in item (a) of FIG. 25, indicating that it has four terminals.
- Rectangle TS is two in item (d) of FIG. 25, indicating that it has two terminals.
- the symbols of the negative N are a white rectangle RE0, a rectangle RE2 arranged at the lower left in the rectangle RE0, a hook H2 extending from the rectangle RE2 toward the upper right in the rectangle RE0, and the rectangle RE0. It is composed of a black rectangle TS arranged outside and a line segment TSS connecting the rectangle RE0 and the rectangle TS.
- a black rectangle TS indicates a terminal connected to an adjacent cell.
- Rectangle TS is four in item (a) of FIG. 25, indicating that it has four terminals. There are three rectangles TS in items (b) and (c) of FIG. 25, indicating that they have three terminals. Rectangle TS is two in item (d) of FIG. 25, indicating that it has two terminals.
- FIG. 25 is an example of setting symbols divided into grid-like areas, and other symbols may be adopted.
- FIG. 26 is a diagram showing a multi-terminal capacitor with a terminal arrangement of 3 rows and 3 columns.
- a unit cell with impedance Z unit1 is placed between terminal T7 and terminal T1
- a unit cell with impedance Z unit2 is placed between terminal T8 and terminal T2
- a unit cell with impedance Z unit2 is placed between terminal T9 and terminal T3.
- a unit cell with impedance Z unit3 is placed between terminal T7 and terminal T4
- a unit cell with impedance Z unit4 is placed between terminal T8 and terminal T5
- a unit cell with impedance Z unit5 is placed between terminal T9 and terminal T9.
- a unit cell with impedance Z unit6 is connected between T6 and T6.
- FIG. 27 is a diagram showing a multi-terminal capacitor represented by the symbols shown in FIG.
- FIG. 27 shows a multi-terminal capacitor 1a equivalent to the multi-terminal capacitor shown in FIG.
- impedance Z unit1 of the unit cell between the terminal T7 and the terminal T1 in FIG. 26 is distributed evenly between the symbol of the terminal T7 and the symbol of the terminal T1 in the same position in FIG. That is, impedance Z unit1 /2 is set to the symbol of terminal T7 and the symbol of terminal T1.
- impedance Z unit2 of the unit cell between the terminal T8 and the terminal T2 in FIG. 26 is distributed evenly between the symbol of the terminal T8 and the symbol of the terminal T2 in the same position in FIG. That is, impedance Z unit2 /2 is set to the symbol of terminal T8 and the symbol of terminal T2.
- impedance Z unit3 of the unit cell between the terminal T9 and the terminal T3 in FIG. 26 is distributed evenly between the symbol of the terminal T9 and the symbol of the terminal T3 in the same position in FIG. That is, impedance Z unit3 /2 is set to the symbol of terminal T9 and the symbol of terminal T3.
- impedance Z unit4 of the unit cell between the terminal T7 and the terminal T4 in FIG. 26 is distributed evenly between the symbol of the terminal T7 and the symbol of the terminal T4 in the same position in FIG. That is, impedance Z unit4 /2 is set to the symbol of terminal T7 and the symbol of terminal T4.
- impedance Z unit5 of the unit cell between the terminal T8 and the terminal T5 in FIG. 26 is distributed evenly between the symbol of the terminal T8 and the symbol of the terminal T5 in the same position in FIG. That is, impedance Z unit5 /2 is set to the symbol of terminal T8 and the symbol of terminal T5.
- impedance Z unit6 of the unit cell between the terminal T9 and the terminal T6 in FIG. 26 is distributed evenly between the symbol of the terminal T9 and the symbol of the terminal T6 in the same position in FIG. That is, impedance Z unit6 /2 is set to the symbol of terminal T9 and the symbol of terminal T6.
- FIG. 28 is a diagram showing a multi-terminal capacitor having a terminal arrangement of 3 rows and 5 columns.
- a multi-terminal capacitor 1b shown in FIG. 28 has 15 terminals T1 to T15.
- the impedance of the symbol corresponding to the terminal T4 is evenly distributed to the symbols of the terminals T10 and T13, and the impedance of the symbol corresponding to the terminal T5 is equally distributed to the symbols of the terminals T11 and T14.
- the impedance of the symbol corresponding to the terminal T6 is evenly distributed to the symbol of the terminal T12 and the symbol of the terminal T15.
- FIG. 29 is a diagram showing an equivalent circuit of the substrate 10a including the multi-terminal capacitor 1 described with reference to FIG.
- the symbols described with reference to FIG. 25 represent the multi-terminal capacitor 1a.
- the terminals T7 to T8 corresponding to the three symbols corresponding to the positive terminals are electrically connected to the positive terminal PO11 of the port PO1 and the positive terminal PO21 of the port PO2.
- Terminals T1 to T6 corresponding to the six symbols corresponding to negative poles are electrically connected to a reference potential, eg, ground.
- a resistor RA is electrically connected between the positive electrode PO11 and the negative electrode PO12 of the port PO1.
- a resistor RB is electrically connected between the positive electrode PO21 and the negative electrode PO22 of the port PO2.
- FIG. 30 is a diagram showing an example of S-parameter simulation results.
- the horizontal axis indicates the frequency [Hz]
- the vertical axis indicates the S-parameter value [dB].
- FIG. 30 shows S11 and S21 among the S parameters.
- S11 is the power reflected from port PO1 divided by the power incident on port PO1.
- S21 is the power gain when the impedance of the power source and load is 50 ⁇ .
- FIG. 31 is a diagram illustrating an example of time domain simulation.
- power is supplied from the DC power supply 20 to the load 30 through the substrate 10 .
- Voltage Vdc of DC power supply 20 is applied to load 30 through substrate 10 .
- a current source Idc connected in parallel with the load 30 is provided. Connections of resistive elements and inductive elements and connections of resistive elements, inductive elements and capacitive elements in FIG.
- the load 30 is, for example, a semiconductor chip such as a controller or processor.
- FIG. 32 is a diagram showing changes in the current value of the current source Idc in FIG. 32, the horizontal axis indicates the rise time Ti of the current value, and the vertical axis indicates the amplitude Ai.
- FIG. 33 is a diagram showing an example of changes in load voltage.
- the horizontal axis is time [ns] and the vertical axis is voltage [V].
- a dashed line in FIG. 33 indicates the voltage V0 when the multi-terminal capacitor 1a is not provided.
- a solid line in FIG. 33 indicates the voltage V1 when the multi-terminal capacitor 1a is provided.
- the operation of the load 30 may cause the current value of the current source Idc to increase or the load voltage to drop.
- the load voltage may drop and then rise.
- the voltage V1 with the multi-terminal capacitor 1a fluctuates less than the voltage V0 without the multi-terminal capacitor 1a.
- FIG. 34 is a diagram illustrating a configuration example of a simulation device of the present disclosure.
- a simulation apparatus 100 shown in FIG. 34 is a simulation apparatus provided with a program for calculating the characteristics of a multi-terminal capacitor or the characteristics of a circuit to which multi-terminal capacitors are connected.
- the simulation apparatus includes an input section 101 , a calculation section 102 , an output section 103 , a storage section 104 and a storage section 105 .
- the input unit 101 inputs data such as conditions for setting an equivalent circuit model.
- Input unit 101 includes, for example, a keyboard and a mouse.
- the calculation unit 102 executes a program based on the data input by the input unit 101.
- the computing unit 102 includes, for example, a CPU (Central Processing Unit).
- the output unit 103 displays the result of calculation by the calculation unit 102, the waveform of the characteristics obtained by the simulator, and the like.
- the output unit 103 is implemented by, for example, a display device.
- the storage unit 104 stores data of the equivalent circuit model.
- the equivalent circuit model data stored in the storage unit 104 is, for example, data of the multi-terminal capacitor 1a shown in FIG. 27 or data of the multi-terminal capacitor 1b shown in FIG.
- Storage unit 105 stores a program for executing the simulator.
- the simulator stored in the storage unit 105 calculates the characteristics of the multi-terminal capacitor or the characteristics of the circuit to which the multi-terminal capacitor is connected.
- Storage unit 104 and storage unit 105 may be realized by a magnetic disk device, or may be realized by a semiconductor memory.
- the data input from the input unit 101 and the equivalent circuit model data are stored in the storage unit 104 .
- the calculation unit 102 executes a program stored in the storage unit 105 to activate the simulator.
- the calculation unit 102 performs calculations using a simulator.
- the output unit 103 outputs characteristic waveforms obtained as a result of calculation by the calculation unit 102 in the form of graph display or the like.
- the simulation device shown in FIG. 34 has a program for calculating the characteristics of multi-terminal capacitors or the characteristics of circuits to which multi-terminal capacitors are connected.
- the S-parameter of the multi-terminal capacitor can be measured.
- an equivalent circuit model corresponding to the above waveform can be created. Then, using the created equivalent circuit model of the multi-terminal capacitor, the characteristics of the multi-terminal capacitor or the characteristics of the circuit including the multi-terminal capacitor can be calculated.
- the simulation apparatus shown in FIG. 34 uses the equivalent circuit model of the multi-terminal capacitor created using the equivalent circuit model creation method described above to calculate the characteristics of the multi-terminal capacitor or the characteristics of the circuit including the multi-terminal capacitor. It is a device that This simulation device realizes a simulation method for calculating the characteristics of a multi-terminal capacitor or the characteristics of a circuit including a multi-terminal capacitor using the equivalent circuit model of the multi-terminal capacitor created using the equivalent circuit model creation method described above. can do. Characteristics of multi-terminal capacitors and characteristics of circuits having multi-terminal capacitors such as circuits in which multi-terminal capacitors are connected can be evaluated by various methods such as frequency domain and time domain.
- the characteristics of multi-terminal capacitors can be evaluated in a simulation environment specified by the user. Further, by providing a dedicated simulation device, input operations such as model setting and output operations such as graph display are facilitated, thereby improving user convenience.
- a program for executing the equivalent circuit model creation method described with reference to FIG. 1 may be created and executed by a computer.
- This program is an equivalent circuit model creation program for creating an equivalent circuit model of a multi-terminal capacitor having a configuration in which a positive electrode terminal row and a negative electrode external electrode terminal row are alternately arranged in parallel.
- a first step of measuring an S-parameter of the multi-terminal capacitor a second step of deriving the impedance of the entire multi-terminal capacitor based on the measured value of the S-parameter measured in the first step;
- This equivalent circuit model creation program is stored in the storage unit 105 in FIG. 34, for example.
- This equivalent circuit model creation program is read from the storage unit 105 and executed by the calculation unit 102 in FIG. 34, for example.
- This equivalent circuit model creation program may be stored in a storage medium removable from the computer.
- the equivalent circuit model creation program may be stored in a USB flash drive (Universal Serial Bus flash drive), ie, a so-called USB memory.
- USB flash drive Universal Serial Bus flash drive
- the impedance of the multi-terminal capacitor is derived from the two-port S-parameter measurements by mounting on the board. Since a two-port measurement method is used instead of multi-port measurement, the number of man-hours for measurement evaluation can be reduced.
- a two-terminal equivalent circuit model can be created by fitting processing based on the derived overall impedance. Based on the periodic structure of the grid equivalent circuit model, the impedance of the unit cell can be derived from the overall impedance.
- the entire equivalent circuit model can be created. Therefore, an equivalent circuit model having a topology corresponding to the structure of the multi-terminal capacitor can be created. Also, by repeatedly using the characteristics of the unit cell, the amount of calculation of the circuit simulation can be reduced. Furthermore, it is possible to provide a SPICE model with high accuracy in both the time domain and the frequency domain and with low computational cost.
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Abstract
Description
図2から図5は、多端子キャパシタの構成例を示す図である。図2は、多端子キャパシタの構成例を示す平面図である。図3は、図2中のA1-A1部の断面を示す図である。図4および図5は、多端子キャパシタの断面の一部を拡大して示す図である。
図6は、多端子キャパシタのSパラメータを測定する方法を説明する図である。図6は、Sパラメータを測定するための治具を示す図である。図7は、図6中のB1-B1部に沿った、断面を示す図である。図8は、図6中のB2-B2部に沿った、断面を示す図である。
Ztotal=(Z0/2)×{S21/(1-S21)} …(1)
次に、フィッティング処理について説明する。フィッティング処理は、回路全体のインピーダンス値Ztotalの測定値に対応する等価回路を導出する処理である。フィッティング処理は、シミュレーション値を、測定値に一致させるための処理である。具体的には、SPICE(Simulation Program with Integrated Circuit Emphasis)モデルによるインピーダンスのシミュレーション値を測定値に一致させるために、抵抗素子、誘導素子および容量素子を組合せて等価回路を導出する。
図16のステップST33において、シミュレーション値が測定値に一致するか否かについては、例えば、次のように判定してもよい。すなわち、測定値は一定ではなく、図14および図15に示すように変化の幅がある。シミュレーション値の全体が、この測定値の変化の幅に含まれる場合に、シミュレーション値が測定値に一致する、と判定することができる。すなわち、図14に示すように、インピーダンスの測定値ME1には変化の幅があり、シミュレーション値SM1の全体が測定値ME1の変化の幅に含まれていれば、シミュレーション値が測定値に一致する、と判定することができる。また、図15に示すように、等価直列抵抗(ESR)の測定値ME2には変化の幅があり、シミュレーション値SM2の全体が測定値ME2の変化の幅に含まれていれば、シミュレーション値が測定値に一致する、と判定することができる。
図21は、全体のインピーダンスZtotalのイメージを示す図である。図22は、全体のインピーダンスZtotalに対応する、単位セルの配列の例を示す図である。
Zunit=K・Ztotal …(2)
式(2)から分かるように、全体のインピーダンスZtotalから、単位セルのインピーダンスZunitを単純な計算で導出することができる。
Runit=K・Rtotal …(3)
Lunit=K・Ltotal …(4)
Cunit=Ctotal/K …(5)
多端子キャパシタの等価回路モデルをシンボルによって表現することができる。図25は、多端子キャパシタの等価回路モデルを表現するシンボルの例を示す表である。
図31は、時間領域のシミュレーションの例を説明する図である。本例では、直流電源20から、基板10を介して負荷30に電力を供給する。直流電源20の電圧Vdcが基板10を介して負荷30に与えられる。本例では、負荷30に並列に接続された電流源Idcが設けられている。図31中の抵抗素子および誘導素子の接続、抵抗素子、誘導素子および容量素子の接続は、基板10の等価回路である。なお、負荷30は、例えば、コントローラ、プロセッサなどの半導体チップである。
図34は、本開示のシミュレーション装置の構成例を示す図である。図34に示すシミュレーション装置100は、多端子キャパシタの特性、または多端子キャパシタを接続した回路の特性を計算するプログラムを備えたシミュレーション装置である。図34において、シミュレーション装置は、入力部101と、演算部102と、出力部103と、記憶部104と、記憶部105とを備えている。
図1を参照して説明した等価回路モデル作成方法を実行するプログラムを作成し、コンピュータに実行させてもよい。このプログラムは、正極の外部電極端子列と負極の外部電極端子列とが平行して交互に並んだ構成を有する多端子キャパシタの等価回路モデルを作成する等価回路モデル作成プログラムであって、コンピュータに、前記多端子キャパシタのSパラメータを測定する第1ステップと、前記第1ステップにおいて測定されたSパラメータの測定値に基づいて、前記多端子キャパシタ全体のインピーダンスを導出する第2ステップと、前記第2ステップにおいて導出された前記多端子キャパシタ全体のインピーダンスから2端子の等価回路モデルを作成する第3ステップと、前記第3ステップにおいて作成された2端子の等価回路モデルから単位セルの等価回路モデルを導出する第4ステップと、前記第4ステップにおいて導出された単位セルの等価回路モデルと寄生成分の等価回路モデルとを組み合わせて二次元格子状のトポロジを作成する第5ステップと、前記第5ステップにおいて作成された二次元格子のトポロジの節点に前記多端子キャパシタの端子を設定する第6ステップとを実行させるためのプログラムである。この等価回路モデル作成プログラムは、例えば、図34中の記憶部105に記憶されている。この等価回路モデル作成プログラムは、例えば、図34中の演算部102が記憶部105から読み出して実行する。なお、この等価回路モデル作成プログラムは、コンピュータから取り外し可能な記憶媒体に記憶されていてもよい。例えば、USBフラッシュドライブ(Universal Serial Bus flash drive)、すなわちいわゆるUSBメモリに、等価回路モデル作成プログラムが記憶されていてもよい。
以上の方法によれば、外部電極端子が格子状に配列された多端子キャパシタの等価回路モデルを作成することができる。また、外部電極端子の正極の列と負極の列とが平行して交互に並んだ縞模様状の配置にすることができる。さらに、多端子キャパシタのインピーダンスを基板実装による2ポートのSパラメータ測定値から導出する。マルチポートでなく、2ポートによる測定法を用いるため、測定評価の工数を削減できる。
10、10a 基板
11 治具
100 シミュレーション装置
101 入力部
102 演算部
103 出力部
104、105 記憶部
PO1 ポート
PO2 ポート
T1~T15 端子
Claims (9)
- 正極の外部電極端子列と負極の外部電極端子列とが平行して交互に並んだ構成を有する多端子キャパシタの等価回路モデルを作成する等価回路モデル作成方法であって、
前記多端子キャパシタのSパラメータを測定する第1ステップと、
前記第1ステップにおいて測定されたSパラメータの測定値に基づいて、前記多端子キャパシタ全体のインピーダンスを導出する第2ステップと、
前記第2ステップにおいて導出された前記多端子キャパシタ全体のインピーダンスから2端子の等価回路モデルを作成する第3ステップと、
前記第3ステップにおいて作成された2端子の等価回路モデルから単位セルの等価回路モデルを導出する第4ステップと、
前記第4ステップにおいて導出された単位セルの等価回路モデルと寄生成分の等価回路モデルとを組み合わせて二次元格子状のトポロジを作成する第5ステップと、
前記第5ステップにおいて作成された二次元格子のトポロジの節点に前記多端子キャパシタの端子を設定する第6ステップと、
を含む等価回路モデル作成方法。 - 前記第3ステップにおいては、シミュレーション値を前記Sパラメータの測定値に近づけるフィッティング処理によって、前記2端子の等価回路モデルを作成する請求項1に記載の等価回路モデル作成方法。
- 前記フィッティング処理においては、前記Sパラメータの測定値に一致するように、回路要素を順次接続することにより、前記2端子の等価回路モデルを作成する請求項2に記載の等価回路モデル作成方法。
- 前記第4ステップにおいては、並列接続されたK個の単位セルに分割するために、抵抗値および誘導値についてはK倍し、容量値については1/K倍することにより、前記単位セルに振り分ける請求項1から請求項3のいずれか1つに記載の等価回路モデル作成方法。
- 前記第1ステップにおいては、前記多端子キャパシタが実装された基板を有する治具を用いて、前記Sパラメータを測定する請求項1から請求項4のいずれか1つに記載の等価回路モデル作成方法。
- 正極の外部電極端子列と負極の外部電極端子列とが平行して交互に並んだ構成を有する多端子キャパシタの等価回路モデルを作成する等価回路モデル作成プログラムであって、
コンピュータに、
前記多端子キャパシタのSパラメータを測定する第1ステップと、
前記第1ステップにおいて測定されたSパラメータの測定値に基づいて、前記多端子キャパシタ全体のインピーダンスを導出する第2ステップと、
前記第2ステップにおいて導出された前記多端子キャパシタ全体のインピーダンスから2端子の等価回路モデルを作成する第3ステップと、
前記第3ステップにおいて作成された2端子の等価回路モデルから単位セルの等価回路モデルを導出する第4ステップと、
前記第4ステップにおいて導出された単位セルの等価回路モデルと寄生成分の等価回路モデルとを組み合わせて二次元格子状のトポロジを作成する第5ステップと、
前記第5ステップにおいて作成された二次元格子のトポロジの節点に前記多端子キャパシタの端子を設定する第6ステップと、
を実行させるための等価回路モデル作成プログラム。 - 正極の外部電極端子列と負極の外部電極端子列とが平行して交互に並んだ構成を有する多端子キャパシタの等価回路モデルを作成する等価回路モデル作成プログラムを記憶した記憶媒体であって、
コンピュータに、
前記多端子キャパシタのSパラメータを測定する第1ステップと、
前記第1ステップにおいて測定されたSパラメータの測定値に基づいて、前記多端子キャパシタ全体のインピーダンスを導出する第2ステップと、
前記第2ステップにおいて導出された前記多端子キャパシタ全体のインピーダンスから2端子の等価回路モデルを作成する第3ステップと、
前記第3ステップにおいて作成された2端子の等価回路モデルから単位セルの等価回路モデルを導出する第4ステップと、
前記第4ステップにおいて導出された単位セルの等価回路モデルと寄生成分の等価回路モデルとを組み合わせて二次元格子状のトポロジを作成する第5ステップと、
前記第5ステップにおいて作成された二次元格子のトポロジの節点に前記多端子キャパシタの端子を設定する第6ステップと、
を実行させるための等価回路モデル作成プログラムを記憶した記憶媒体。 - 請求項1から請求項5のいずれか1つに記載の等価回路モデル作成方法を用いて作成した多端子キャパシタの等価回路モデルを利用して、前記多端子キャパシタの特性または前記多端子キャパシタを含む回路の特性を計算するシミュレーション方法。
- 請求項1から請求項5のいずれか1つに記載の等価回路モデル作成方法を用いて作成した多端子キャパシタの等価回路モデルを利用して、前記多端子キャパシタの特性または前記多端子キャパシタを含む回路の特性を計算するシミュレーション装置。
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JP2010205004A (ja) * | 2009-03-04 | 2010-09-16 | Tokyo Institute Of Technology | 回路モデル作成装置、回路モデル作成方法、シミュレーション装置、及び、シミュレーション方法 |
JP2013186611A (ja) * | 2012-03-07 | 2013-09-19 | Murata Mfg Co Ltd | 等価回路作成方法及び等価回路作成プログラム |
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JP2010205004A (ja) * | 2009-03-04 | 2010-09-16 | Tokyo Institute Of Technology | 回路モデル作成装置、回路モデル作成方法、シミュレーション装置、及び、シミュレーション方法 |
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