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Learn something new with our collection of blog posts centered around various topics on PSpice® technology.

What's Good About the Latest PSpice? The 16.6 Release Has Several New Enhancements!

The 16.6-2015 PSpice release has several new features and capabilities:

VBIC Support Added in PSpice

In case of early effect, quasi-saturation, temperature modeling, avalanche multiplication, and so on, VBIC, a bipolar junction transistor (BJT) model, can be used instead of the SPICE Gummel-Poon (SGP) model for better modeling than SGP.

Beginning with the 16.6-2015 release, a new Q device, which is a npn-type BJT model, is added to Capture library for the Capture-PSpice flow and can be accessed from breakout.olb. The model definition and netlist instance of the QVBICN model are:

  • Model Defination: .model QVBICN CMI VBIC npn=1
  • Netlist instance: Y_Q1 C B E S CMI orPSpiceDevices.dll QVIBICN

QVBICN is an example of Device Model Interface (DMI) support that is used to create specific devices from the model DLL files:

Blogmar2016_image1.png

Note: The following PSpice DMI models require an Allegro AMS Simulator license for simulation:

  • Digital and SystemC DMI models, such as Digital LogicExp devices using CMODEL parameter
  • Analog DMI models, such as Y devices
  • Models translated from VerilogA-ADMS

The DMI models that are shipped with PSpice, such as QVBICN DMI model, do not require the Allegro AMS Simulator license.

New Device Added in PSpice for DMI Support

A new generic device, Y device, is added in PSpice for DMI support. Using this generic device and DLL files, you can create various type of devices, such as BJT, voltage-controlled voltage source (VCVS), and thin-film transistor (TFT).

The DLL files are generated by compiling the C code. You can modify the C code to generate a device that can perform a specific function.

For more information on DMI models, refer the Device Model Interface section in PSpice A/D Reference Guide.

For more information on generating DLL files and compiling C code, refer to the following documents:

  • PSpice DMI API Reference Guide
  • PSpice Device and System Modeling with C/C++ and SystemC

 

ADMS XML Filters for Verilog-A to PSpice DMI Models Translation

Beginning with the 16.6-2015 release, Verilog-A models can be simulated by PSpice when converted to PSpice DMI models. The Verilog-A models are converted to an equivalent-C code by Automatic Device Model Synthesizer (ADMS) using the PSpice DMI-compatible XML filters, which are located at <installation>\tools\pspice\api\adms\xmls. The generated C code can be compiled into PSpice DMI-compatible DLL files. 

For more information on Verilog-A support in PSpice, refer the PSpice Device and System Modeling with C/C++ and SystemC document.

Note: Only the ADMS-supported Verilog- A models are converted to PSpice DMI models.

 

Documentation Enhancements

Two new documents have been added for DMI support in the <installation>\doc folder:

  • PSpice Device Modeling Interface API Reference Guide: Describes the APIs that can be used to generate and compile the PSpice DMI DLL files
  • PSpice Device and System Modeling with C/C++ and SystemC: Provides step-by-step instructions for generating and compiling new SystemC DLL files

PSpice Lite License String Added for PSpice Lite Mode

Before 16.6-2015, there was no option to launch PSpice in Lite mode if you had any valid license. Now you can use the new license string, OrCAD Lite - PSpice, to launch PSpice in the Lite mode, even if you have a valid license:

 

blogmar2016_image2.png

 

Note: You cannot switch between the Lite and the licensed version of PSPice in the same session. You have to restart PSpice and select the required option.

 

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