ST UM2167 OrCAD PSpice Model Usage Manual

About this manual

This manual explains how to use ST’s PSpice models for SMPS devices within the OrCAD system. It covers adding model library files (.OLB and .LIB) to projects, placing symbols in schematics, and configuring simulation profiles. The guide also includes important notes on simulation setup, such as setting flip-flop initialization and using VPULSE instead of VDC for input voltage.

The document advises using the latest OrCAD version to avoid convergence issues and recommends adjusting simulation parameters like ABSTOL, ITL4, and Speed Level for better performance.

What's inside

• Introduction
• PSpice models – instructions to simulate
• Important notes
• Revision history

Frequently asked questions

What simulation platform is this model compatible with?

The models are useable in the OrCAD system environment of Cadence Design Systems and will not work in other simulation platforms.

What simulation platform is required to use ST’s PSpice models?

The models are useable in the OrCAD system environment of Cadence Design Systems.

What should be used instead of a VDC component for VIN?

Do not use a VDC component as VIN source but a VPULSE or a VPWL.

What value should ABSTOL be changed to if convergence problems occur?

Change the parameter ABSTOL from 1.0p to 1.0n.