PSpice Optimizer User’s Guide.pdf

PSpice Optimizer is a circuit optimization program that improves the performance of analog and mixed analog/digital circuits. The PSpice Optimizer is fully integrated with other Orcad programs. This means you can design your circuit with Orcad Capture, simulate and analyze results with PSpice and optimize performance within the same environment.
Contents:

• Chapter 1 Things you need to know [ Chapter overview ~ What is the PSpice Optimizer? ~ Designs that you can optimize ~ Designs that you cannot optimize ~ Using the PSpice Optimizer with other Orcad programs ~ Terms you need to understand ]
• Chapter 2 Primer: How to optimize a design [ Chapter overview ~ Optimizing a diode biasing circuit—the objective ~ Why use optimization? ~ Phase One: Developing the design ~ The PSpice optimizer advantage ~ Phase Two: Setting up the optimization ~ Defining design parameters ~ Setting up goals and constraints ~ Setting up analyses for each goal and constraint ~ Developing performance measures ~ Defining specifications: goals and constraints ~ Phase Three: Running an optimization ~ Running the PSpice Optimizer ~ Adding a constraint and rerunning the PSpice Optimizer ~ Changing the constraint and rerunning the PSpice Optimizer ~ Using standard component values ~ Producing reports ~ Saving results ~ Updating the schematic ]
• Chapter 3 Using the PSpice Optimizer [ Chapter overview ~ Starting and loading the PSpice Optimizer ~ Starting the PSpice Optimizer ~ From Capture ~ From the Windows Start menu ~ Changing startup options ~ Loading a different optimization file ~ The PSpice Optimizer Window ~ Specifications area ~ Internal specifications ~ External specifications ~ Parameters area ~ Error gauge area ~ Adding and editing parameters ~ Adding a parameter ~ Selecting a parameter to edit ~ Adding and editing specifications ~ Adding a specification ~ Defining an evaluation for an external specification ~ Selecting a specification to edit ~ Measuring and Optimizing Performance ~ Optimizing Your Design ~ Graphically monitoring progress ~ Exploring the effect of parameter and specification changes ~ Testing performance when changing current values ~ Automatically recalculating performance ~ Manually recalculating performance ~ Ensuring reliable results when tweaking values ~ Excluding parameters and specifications from optimization ~ Testing performance when adding or changing parameters or specifications ~ Saving intermediate values ~ Viewing result summaries ~ Producing optimization reports ~ Viewing the optimization log ~ Viewing derivatives ~ Finalizing the design ~ Using standard part values ~ Saving results ~ Updating the design ]
• Chapter 4 Understanding optimization principles and options [ Chapter overview ~ Goals versus constraints ~ Constrained optimization ~ Types of constraints ~ Feasible and infeasible points ~ Active and inactive constraints ~ Lagrange multipliers ~ Characteristics of functions ~ Global and local minima ~ Starting points ~ Convergence ~ Parameter bounds ~ Derivatives ~ How the PSpice Optimizer estimates derivatives ~ Limitations of derivative data ~ Target value scaling ~ Default options ~ Controlling finite differencing when calculating ~ derivatives (Delta option) ~ Limiting simulation iterations (Max. Iterations option) ~ Specifying a waveform display (Waveform Data File and Display options) ~ Advanced options ~ Controlling cutback (Cutback option) ~ Controlling parameter value changes between iterations (Threshold option) ~ Choosing an optimization method for single goal problems (Least Squares/Minimization options) ]
• Chapter 5 Tutorial: Optimizing a design (passive terminator) [ Tutorial overview ~ The passive terminator design ~ Loading the design into Capture ~ Setting part values to expressions ~ Defining optimization parameters ~ Defining the analysis type ~ Running an initial circuit analysis ~ Starting the PSpice Optimizer ~ Viewing the parameter description ~ Defining the goals and constraints ~ Checking that the design will simulate ~ Starting the optimization ~ Changing a goal to a constraint ~ Saving results ]
• Chapter 6 Tutorial: Exploring design tradeoffs (active filter) [ Tutorial overview ~ The active filter design ~ The parameters ~ The goals ~ Testing performance ~ Calculating derivatives ~ Tweaking parameters ~ Tweaking goals and constraints ~ Completing optimization ]
• Chapter 7 Tutorial: Using constrained optimization (MOS amplifier) [ Tutorial overview ~ The CMOS amplifier design ~ The parameters ~ The evaluations ~ The goals and constraints ~ Setting the method for a ~ single-goal optimization ~ Performing the optimization ]
• Chapter 8 Tutorial: Fitting model data (bipolar transistor) [ Tutorial overview ~ Using the PSpice Optimizer to fit data to model parameters ~ The bipolar transistor test case ~ The parameters ~ The analysis ~ The external file of measured data ~ The goals and constraints ~ Monitoring progress with PSpice A/D ~ Fitting the data ]

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