SPICELib.tutorial.circ2

Information

Example 2

Circuit modeling

• Start Dymola with Modelica modeling language.
• In order to open SPICELib library, select in the Dymola window File/Open and open the file SPICELib/package.mo
• Create a new package (select in the Dymola window File/New/Package): circ2.
  It is going to include the circuit and the analysis models.
• Create the circuit model (select in the Dymola window File/New/Model) as follows:
  
  Name of new model: Schematic
  Description: Circuit model
  Partial model
  Insert in package: circ2
  
  Dymola model window now contains an empty Schematic model.
  The model circuit is built up using components from the SPICELib.parts package. The model components for a n-channel MOS, a p-channel MOS and a ground can be found in SPICELib.parts.breakout. The model component for a independent voltage source can be found in SPICELib.parts.source. Drag and drop the part models listed below as shown in Figure 2.
  • SPICELib.parts.breakout.Ground
  • SPICELib.parts.breakout.Spice2MOS1
  • SPICELib.parts.breakout.Spice2MOS1P
  • SPICELib.parts.source.VPULSE
  • SPICELib.parts.source.VCONST
  
  Figure 2. Inserting the circuit components.
  
  
• Connect the circuit parts as shown in Figure 1.
• Enter the parameter values of the circuit components. See Figures 3-6.
  The Boolean parameter HIDDEN_COMPONENT controls the log of the device variables (see SPICELib.analyses package documentation).
  Figure 3. VDD parameters.
  
  
  Figure 4. VPULSE1 parameters.
  
  
  
  Figure 5. NMOS parameters.
  
  Figure 6. PMOS parameters.
  
  
  
• Save the Schematic model.

Transient (time) analysis (TRAN)

• Create a new model, circ2_TRAN, and insert it in circ2 package (see Figure 7).
  Figure 7. Inserting circ2_TRAN in circ2 package.
  
  
• Drag an SPICELib.analyses.TRAN model into the circ2_TRAN model (see Figure 8).
  Figure 8. Inserting circ2_TRAN in circ2 package.
  
  
• Enter the TRAN analysis parameters (see Figure 9). The meaning of the analysis parameters is discussed in the SPICELib.analyses.TRAN model documentation. The SKIPBP parameter determines whether skip or not the bias point calculation.
  
  Figure 9. TRAN analysis parameters.
  
  

TRANSIENT ANALYSIS SIMULATED WITH SPICELIB

Figure 10. Transient analysis simulated with SPICELib.

Name	Description
schematic
circ2_Tran

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SPICELib.tutorial.circ2.schematic

Information

Please, see SPICELib.tutorial.circ2 documentation

Modelica definition

partial model schematic 
  parts.breakout.Spice2MOS1 NMOS(
    L=2e-6, 
    W=4e-6, 
    CGDO=3.227e-10, 
    CGSO=3.227e-10, 
    CJ=0.0003002, 
    CJSW=1.376e-10, 
    GAMMA=0.2844, 
    KP=5.317e-5, 
    LAMBDA=0.01302, 
    LD=1.526e-7, 
    MJ=0.5, 
    MJSW=0.5, 
    PB=0.7365, 
    PHI=0.7095, 
    TOX=1.6e-8, 
    VTO=0.8307, 
    RS=10, 
    RB=10);
  parts.breakout.Ground Ground1;
  parts.breakout.Ground Ground2;
  parts.source.VPULSE VPULSE1(
    PW=500e-9, 
    AC_MAG=0, 
    TD=500e-9, 
    PER=1020e-9, 
    DC_VALUE=5, 
    S2=0, 
    S1=5, 
    TF=70e-9, 
    TR=70e-9);
  parts.breakout.Spice2MOS1P PMOS(
    CGDO=2.248e-10, 
    CGSO=2.28e-10, 
    CJ=0.0004138, 
    CJSW=1.004e-10, 
    KP=2.239e-5, 
    L=2e-6, 
    LAMBDA=0.01525, 
    LD=1.063e-7, 
    MJSW=0.5, 
    PB=0.7485, 
    PHI=0.7054, 
    TOX=1.6e-8, 
    VTO=-0.8407, 
    W=20e-6);
  parts.breakout.Ground Ground3;
  parts.source.VSIN VDD(
    OFF=5, 
    AMPL=0, 
    FREQ=0, 
    DC_VALUE=5, 
    AC_MAG=0);
equation 
  connect(Ground1.p, NMOS.s);
  connect(PMOS.g, NMOS.g);
  connect(PMOS.d, NMOS.d);
  connect(VPULSE1.p, NMOS.g);
  connect(NMOS.b, Ground1.p);
  connect(VPULSE1.n, Ground3.p);
  connect(VDD.n, Ground2.p);
  connect(VDD.p, PMOS.s);
  connect(PMOS.s, PMOS.b);
end schematic;

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SPICELib.tutorial.circ2.circ2_Tran

Information

Please, see SPICELib.tutorial.circ2 documentation

Modelica definition

model circ2_Tran 
  analyses.TRAN TRAN(
    LogResults=0, 
    redeclare model Circuit = schematic, 
    TSTOP=1e-6, 
    SOLVE_STATIC=0, 
    TimeScale=1e-7, 
    SKIPBP=false);
end circ2_Tran;

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