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There are no data values in section number 1 Ignoring this section

HC20250310444

Hi,

I downloaded three simulation models of MOS transistors from the official website of Infineon and imported them into my pspice simulation. When I run the simulation, this prompt box pops up: There are no data values in section number 1 Ignoring this section.

 

After clicking OK, another prompt box pops up saying My simulation dat. File analysis failed.

After turning off the prompt box, I noticed that the calculation process and output window still displayed these few errors:

ERROR(ORPSIM-16551): Floating point computation failed during Device/Model Load Possible solutions: 1)Ensure that all device parameters are in valid range. 2) Try using option LIMIT .

INTERNAL ERROR--Overflow in device X_U2.X1.G_chan. Multiply.

 

At present, I have tried to adjust the limit to 1E-12, or turn on automatic convergence, or connect a small resistor in series between the G and S terminals of the MOS transistor, but none of them have been able to solve the problem. I want to ask for help. How should I solve this simulation problem now?

  • 0

    Check the U2 model by opening it in text editor for any unrealistic values of passive devices and try to define limits for functions defined in the model. Directly put the limit into model.

    Also you can try reducing the tolerances manually from the options under simulation settings.

  • 0 in reply to AyushD

    Thank you very much for your reply.

    Could you please explain in detail how to define limits? I am a beginner and not yet familiar with the language used in the model.

    The following text is about opening the U2 model in a text editor. What values should I change and which statements should I add?

     **********
    .SUBCKT IQE013N04LM6_L1 drain gate source PARAMS: dVth=0 dRdson=0 dgfs=0 dC=0 Ls=0.1n Ld=0.25n Lg=1n
    .PARAM Rs=13u Rg=0.9 Rd=80u Rm=10u
    .PARAM Inn=30 Unn=10 Rmax=1.35m gmin=121
    .PARAM act=5.14 Rsp=0.43
    X1 d1 g s sp Tj1 S6_40_c_var PARAMS: a={act} Rsp={Rsp} dVth={dVth} dR={dRdson} dgfs={dgfs} Inn={Inn} Unn={Unn}
    +Rmax={Rmax} gmin={gmin} Rs={Rs} Rp={Rd} dC={dC} Rm={Rm}
    Rg g1 g {Rg}
    Lg gate g1 {Lg*if(dgfs==99,0,1)}
    Gs s1 s VALUE={V(s1,s)/(Rs*(1+(limit(V(Tj),-200,999)-25)*4m)-Rm)}
    Rsa s1 s 1Meg
    Ls source s1 {Ls*if(dgfs==99,0,1)}
    Rda d1 d2 {Rd}
    Ld drain d2 {Ld*if(dgfs==99,0,1)}
    E1 Tj w VALUE={TEMP}
    Vp Tj1 Tj 0
    R1 Tj Tj1 1u
    G_power 0 Tj VALUE={V(s1,s)*V(s1,s)/(Rs*(1+(limit(V(Tj),-200,999)-25)*4m)-Rm)+V(g,g1)*V(g,g1)/Rg+V(d1,d2)*V(d1,d2)/Rd+I(Vp)}
    R2 w 0 1u
    .ENDS

    Also, I have reduced RELTOL to 0.0001, reduce VNTOL to 0.1u, and reduce ABSTOL to 0.1p, but still cannot solve the problem. Is this tolerance small enough?

  • 0 in reply to HC20250310444

    You need to reduce the accuracy which means you need to loose the tolerance not tighten them.
    So increase the values of RELTOL, VNTOL and ABSTOL not decrease them.

    If you are okay to share your zipped project here, please attach it else i will send you a mail separately to upload the design and i can have a look.

  • 0 in reply to AyushD

    Could you please send me a mail to upload the design? Thank you. There are some errors on the website that prevent me from uploading some files and images.

  • 0 in reply to AyushD

    Hi Ayush,

    this is my email: c7649246699@outlook.com

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