Changing device parameters in pspice
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Changing Device Parameters in PSpice. Device Model: Diode. PSpice . Simplest diode model in PSpice uses only the ideal diode equation More complex diode models in PSpice include: Parasitic resistances to account for the linear regions

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Changing Device Parameters in PSpice

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Changing Device Parameters in PSpice

Device Model: Diode


PSpice

  • Simplest diode model in PSpice uses only the ideal diode equation

  • More complex diode models in PSpice include:

    • Parasitic resistances to account for the linear regions

    • Breakdown voltage with current multipliers to map the knee between Io and the current at breakdown

    • Temperature dependences of various parameters

    • Parasitic capacitances to account for the frequency dependence


PSpice

  • Device Simulation packages

    • Capture

    • Schematics

      • The calculations performed will be identical when using the same device models.

      • The GUIs are not the same.

      • There are minor differences in how the programs interprets some changes that you make to the device models.


PSpice Schematics


Device Parameters


PSpice Capture


Editing Device Model

  • The device parameters can be changed, but will only be changes for the file that you are currently working on.

    • In Schematics, the changes only apply to the specific part that you had highlighted when you made the changes.

    • In Capture, the changes apply to all components in the file that share the same part model.

    • To simulate the Ideal Diode Equation, you can delete the other parameters or set them to zero or a very large number, depending on what would be appropriate to remove their effect from the simulation


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