PSpice 16.6 now provides IBIS model simulation capability. This often requested feature supports:
- SPICE circuit generation for all IBIS versions
- Support for V-T curves
- Analog simulation of XNets (use Advanced Analysis tools for smoke analysis on bypass components)
Converting IBIS to PSpice
The Model Editor now supports all versions of IBIS for V-T curves.
Invoke Modeled.exe.
Invoke the IBIS converter from the menu Model > IBIS Translator.
Browse to DatabaseIBISImportepcs64.ibs:
Click OK to generate PSpice Model.
Simulate Nets with SI Models
PSpice allows you to simulate nets with SI Model assignments in PSpice. Consider the following example circuit:
Select a design from Project Manager and invoke the library setup. Ensure the library setup is correct:
Select pins U1A.16 and U1B.11 and select RMB > Signal Integrity >Assign SI Model:
Assign any output model to the pin:
Open a TCL Command Window in Capture from the menu View > Command Window.
Type in the following TCL command to activate the IBIS netlisting -SetOptionString IBIS_PINS_NETLIST TRUE
Next, source a TCL file from your hierarchy –
source {$CDSROOTpspicetclscriptsIbisToPSpicetclibisnetlist.tcl}
Create a transient simulation profile Tran.
Generate the PSpice Netlist from IBIS by executing the following command –
::ibisnetlist::run
Run the PSpice Simulation.
Plot V(Mynet).
Create new measurement:
Launch AA for Sensitivity analysis from Capture.
Import measurement.
In the AA TCL Window, enter the following command –
source { databaseSimulatingSIPspAAProcessDesign.tcl}
Run Sensitivity Analysis.
I look forward to your comments about how you’re using these new capabilities!
Jerry “GenPart” Grzenia
