Join us for a presentation on the benefits of using PSpice® in an integrated OrCAD flow. For new users, we’ll cover how to get started and where to find working examples. The next step is where to find specific models and how to create them if they’re not available anywhere. Finally we’ll go deeper into the tool to see how it can help us if we run into trouble by identifying parts that are close to failure.

1. Customer promise…
Our focus today, as it was in 1989, is to meet our customers’ requirements with quality products, leading technology, and exceptional technical support.
OrCADNow -PSpice
Presented By: Matthew Harms
Field Applications Engineer
matthewh@ema-eda.com

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© 2014 Cadence Design Systems, Inc. Cadence confidential.
Topics
Basics-How to use OrCADCapture to run SPICE simulations
Models-Finding, Importing and Creating
Advanced–Features to keep you out of trouble
Bonus –Q& A (if time permits)

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•Learn by reviewing from the many available starter examples
•Place common partswithout configuring any libraries
•Use the very samesimulation schematicfor your PCB layout
•Grabbing screenshots and documenting your design data
•Create Intelligent PDF’sthat include all the unseen parametric information
Basics
How to use OrCAD Capture to run SPICE simulations

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•Reduces the time to get started with PSpice
•Content addresses the basic concepts of Electrical Engineering with Samples
Interactive Tutorials
Hands On

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•Default installation provides direct placement of common PSpice parts
–No library setup required
QuickplacePSpice Parts
Place common parts quickly
0C11nDbreakD1L110uHR11kQbreakNQ1QbreakPQ2Q3QDarBreakN012Q4QDarBreakP012M1MbreakNM2MbreakPM3power_Mbreaknpower_DbreakD2J1JbreakNJ2JbreakPZ1ZbreakNB1BbreakU1OPAMP+ - OUTR21KSET = 0.5T1LOSSYT2

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• Use Capture as the design center for your PSpice
simulations AND your board layout
OrCAD complete flow
T i m e
0s 1.0us 2.0us 3.0us 4.0us 5.0us
1 I(CAP1) 2 I(CAP2)
-1.0mA
-0.5mA
0A
C
A
P
1
C
u
r
r
e
n
t
-100uA
0A
100uA
200uA
C
A
P
2
C
u
r
r
e
n
t
>>
Use a single schematic
R1
1k
R2
1k
CAP1
1n
IN
0
R3
1k
R4
1k
R5
1k
CAP2
1n
VDD
0
0
U1
LF411
+
3
-
2
V+
7
V-
4
OUT
6
B1
1
B2
5
VSS
V4
TD = 100n
TF = 1u
PW = 1
PER = 2
V1 = 0
TR = 10n
V2 = 1
PSpice
PCB Editor

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•Copy and paste a scalable copy of your schematic into other applications for producing documentation
•In OrCAD Capture > area select the parts > hit Ctrl+C
Grabbing Screenshots
Copy schematic to documentation

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•Copy and paste high-resolution, scalable waveforms into other applications for producing documentation
•In Probe > Window > Copy to Clipboard
Probe Window
Include waveforms in documentation

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•Copy and paste all measured datapointsfor further analysis or measurements in other tools
•In Probe > select Waveform name > hit Ctrl+C
Probe Window
Extract waveform datapoints

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•Hyperlinked page structure, parts list and net list
•Click on part or net to see ALL properties
Intelligent PDF
Generated from Capture

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•Learn how to searchthrough OrCAD’s vast libraries to find the part you’re looking for
•Follow simple steps to bring in Manufacturer’s modelsfrom the internet
•Create modelsfor parts from the datasheet curves
•Make non-ideal capacitorand inductormodels in a few clicks
•Implement any type of source stimulususing a simple interface
Models
Finding, Importing and Creating

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•Model Categorization
–Contains short description
–Description is searchable
PSpice Model Browser
Find existing parts easily

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•The simulator is only as good as your models
•When you can’t find a PSpice part in the installed libraries (<install>/tools/capture/library/pspice), you need to find it elsewhere
•How to bring in web models?
1.Importing/creating PSpice models
2.Linking PSpice models to OrCAD Capture symbols
3.Placing the OrCAD Capture Symbol
4.Hooking up the PSpice model
Model Creation
The flow for bringing PSpice models in to Capture

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•If you can’t find the model you’re looking for in our supplied parts, check the manufacturer’s website to see if they offer it there
•If they offer a PSpice part, save the text file that you get as <filename>.lib
•Cadence also has a list of PSpice parts at:
https://www.cadence.com/
products/orcad/pages/downloads.aspx#models
Import PSpice Model
Bring manufacturers’ online models into PSpice A/D

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• Sometimes the symbol that the PSpice Model Editor
generates is not the one that you’d like it to use
• This is commonly the case for subcircuit (X) parts where
the resulting OrCAD Capture symbol is a box
Link to Custom OrCAD Capture Symbol
Using the PSpice Model Import Wizard
U3
MAX4412
1
1
2
2
3
3
4
4
5
5
* -----------------------
* Connections
* 1 = IN+
* 2 = VEE
* 3 = IN-
* 4 = OUT
* 5 = VCC
*****************
.SUBCKT MAX4412 1 2 3 4 5
*INPUT STAGE
****************
RQ 5 2 8.333K
****************
CIN 3 1 1.8P
****************
PSpice .lib file
-
+
U4
MAX4412
1
2
3
4 5
Using PSpice
Model Import
Wizard
Using PSpice
Model Editor
Export

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•Now that the symbols are made, you can add them into your OrCAD Capture schematic
•In OrCAD Capture, Place > Part and Add Library to browse for the OrCAD Capture symbol library (.olb) that was made in step 2
•This is the ‘Add Library’ Symbol
Place the OrCAD Capture Symbol
Put the new symbol in the schematic

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•Lastly, OrCAD Capture needs to manage the libraries that are being used by parts in your design
•In OrCAD Capture, go to PSpice > Edit Simulation Profile > Configuration Files Tab > Library Category and add the library from step 1
Configure PSpice Library

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Create New PSpice Model
Based off datasheet curves

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• Create realistic models in a few easy steps
• No need to configure libraries as parts are self-contained
• Part looks normal with the value displayed in grey text
Create Realistic Discretes
Dialogs to make Capacitors/Inductors
C2
1u
L2
100uH

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•New feature in PSpice to make moderately complex sources without needing additional stimulus libraries or parameter knowledge (Shift+Rto invoke)
QuickplacePSpice Source
Create and place a voltage/current source

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•Use AutoConvergenceto get past convergence problems
•Determine the stress on your componentsand if they’re close to failure
•Alter the behaviorof your circuit automatically to meet your changing requirements
Advanced
Features to keep you out of trouble

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•Tolerance values are intelligently chosen using un- converged node values
•Tries both resuming and restarting the simulation
Auto-Convergence
Let the simulator do the hard work

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•Run-time setting supports enabling convergence and configuration without restart
Easier Autoconverge
Start it on the fly

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•Smoke -detects component stress
•Optimizer -optimizes key circuit components
•Sensitivity -identifies critical circuit components
•Monte Carlo -analyzes statistical circuit behavior and yield
•Parametric Plotter -sweep any number of design or model parameters
PSpice Advanced Analysis (AA)
Five powerful features

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•Compare simulated values to manufacturers’ limits
•Check voltage, current, power and even temperature
Smoke
Stress Analysis

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•Optimize to multiple goals simultaneously
•Create models that match measured data
Optimizer
Find optimal circuit values automatically

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•Check circuit performance statistics due to device variations
•Evaluate multiple measurements in a single analysis
Monte Carlo
Estimate production yield

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•Identify components that most affect measurements
•Balance cost vs. performance
Sensitivity
Identify sensitive components

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•Allow multiple device/model parameters to be swept
•Plot measurement results in the familiar Probe Window
Parametric Plotter
Perform multiple nested sweeps

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•New features in Capture and PSpice in 16.6 and the subsequent Quarterly Interim Releases (QIR)
Bonus
Additional items if time permits

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•Movements of pin names and pin numbers can now be saved directly in the symbol itself
Move Pin Names and Numbers
Saved in the Symbol

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•User Modification to Reference is detected and marked by Capture
•Annotation Process has new options to manage Reference Assignments
Managing Part Reference
Preserve User Assigned Reference

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•Pivot the Property Editor to get a better view of the properties available
Capture Shortcuts
Pivot property list

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•Property Text
–Display properties
•Text Objects
–Edit text
Text Justification
QIR2

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•Select and Align objects on schematic
–Horizontal Alignment –left, right or center
–Vertical Alignment –top, bottom or center
Object Alignment
QIR3

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•Select objects and evenly distribute horizontally or vertically
•Mouse mode to select the point(s) of reference for alignment or distribution
Object Distribution
QIR3

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•Undo-Redo information is preserved on PSpice netlist
•Enables quick “what-if” scenarios on schematic for PSpice simulations
Simulate and Undo
Edit
Netlist
Simulated
Undo
Netlist
Simulate
Redo
Enables "What-if" analysis

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•Use File > Save Project As… to make a copy of everything that PSpice needs
•Select new Directory Destination and choose new Project Name
•In Settings, choose which other files come along
OrCAD Capture Shortcuts
Save Project As

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•AES encryption added
•Key length increase
–256-bit AES key
•Protects internal nodes and model IP information
Securing Models
256-bit AES encryption

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T i m e
0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms
V(I1:+,R1:1)
0V
2uV
4uV
6uV
8uV
10uV
12uV
• Very useful for differential probes
64-bit Probe support (1/2)
Increase Resolution

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T i m e
0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms
V(I1:+,R1:1)
0V
2uV
4uV
6uV
8uV
10uV
12uV
• Very useful for differential probes
64-bit Probe support (2/2)
Increase Resolution

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•Multi-core enabled
–Focused performance enhancements
–Large designs with complex model instances (MOSFETS, BJT)
•I/O optimization
–Significant performance improvement for large .datfiles
Multi-core support
On a single machine

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•Streamlines component/model creation & association
•Create model-based components w/simulation sub-circuits
•Transformers/Inductors
–Marketplace updates as new content becomes available
–R&D, CCP, or 3rd party supplied
Non-Ideal Transformer Creation
Single Phase
General Purpose Transformer
Two Winding
Multiple Winding
Tap Transformer
Centre Tap Transformer
Primary Centre Tap
Secondary Centre Tap
Custom Tap Transformer
Tap in Primary
Tap in Secondary
Switch Mode Power Supply Transformers
Flyback topology
With auxiliary winding
Forward topology
With RESET Winding
Without RESET Winding
Works for Inductors too

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•Evoked from PSpice tools menu
•Circuit example included with QIR#4 release
–<installation>toolspspicecapture_ samplesanasimfra
Frequency Response Analysis
QIR4

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•All comments starting with @PSpice: are netlistedinto .cir file
•Use this only for commands / parameters not already included in PSpice setup
Comments as PSpice Directive
QIR4

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•In the <install>/doc folder:
•PSpice A/D User’s Guide
pspugpspug.pdf
•PSpice A/D Reference Guide
pspcrefpspcref.pdf
•PSpice A/D Help
psphlppsphlp.pdf
•PSpice A/D Quick Reference
pspqrcpspqrc.pdf
•PSpice AA User’s Guide
pspaugcapspaugca.pdf
•PSpice AA Help
optimChaptoptimChapt.pdf
PSpice Resources
Supplemental information already installed
Stimulus Editor Help
stmedstmed.pdf
PSpice Model Editor Help
mdledthelpmdledthelp.pdf
MPE User’s Guide
magpeugmagpeug.pdf
MPE Help
magpartedmagparted.pdf
PSpice A/D Library List
lib_listlib_list.pdf
PSpice AA Library List:
aaliblistaaliblist.pdf

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•Call us today!
–To find out about the latest in new product developments, training, educational opportunities, and services offered call EMA, a Cadence Channel Partner reseller, call at 877.362.3321 or visit us online at www.ema-eda.com
•Technical Support:
–Telephone: 585-334-6001 Option 5
–E-mail: techsupport@ema-eda.com
•My information –Matthew Harms:
–E-mail: matthewh@ema-eda.com
Thank You For Joining Us
Call or visit us online

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