Circuit Design Sensitivity Analysis for Simulation Optimization

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Solution Overview

Problem

The manual design of new electronic components is a time-consuming and error-prone process, and existing automated tools face lengthy development cycles due to significant simulation run times.

Innovation Solution

A method that involves receiving a circuit design with multiple components and parameters, adjusting specific parameters based on tolerance, using a circuit calculator to determine sensitivity, and selecting simulations to assess whether the design meets design limits, thereby reducing the number of simulations needed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If automated tools are used to create and analyze electronic components, then design accuracy is improved, but development cycle time increases due to significant simulation run times

Engineering Contradiction:
Improvedesign accuracyVSAvoiddevelopment cycle time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary sensitivity analysis using a circuit calculator before executing full simulations. This preliminary action identifies which component parameters significantly affect operating values, allowing the system to focus simulations only on those critical parameters and reduce overall simulation time while maintaining design accuracy.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The analysis process is segmented into distinct phases: initial circuit calculation to determine sensitivity, followed by selective simulation of only those components identified as sensitive. This segmentation separates the comprehensive analysis into targeted steps, reducing the total simulation burden while preserving design accuracy for critical parameters.

Inventive Principle:
Principle #1Segmentation

2Reliability

If comprehensive simulations are performed to ensure design limits are met, then reliability is improved, but productivity decreases due to lengthy analysis processes

Engineering Contradiction:
Improvedesign limit complianceVSAvoidanalysis efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

Instead of performing excessive comprehensive simulations on all components, the system applies partial action by conducting sensitivity analysis first and then performing simulations only on the subset of components that are determined to be sensitive. This partial approach maintains reliability for critical parameters while significantly improving productivity by avoiding redundant simulations on non-sensitive components.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The system changes the approach from fixed comprehensive simulation to dynamic selective simulation based on sensitivity parameters. By calculating sensitivity values and using them to determine which simulations to perform, the system adapts the analysis scope to the actual design requirements, ensuring reliability where needed while maximizing productivity.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11138358B2Simulation and analysis of circuit designs
Publication Date: 2021.10.05 TEXAS INSTRUMENTS INC
  • US11138358B2 patent drawing
  • US11138358B2 patent drawing
  • US11138358B2 patent drawing

AI summary

A method includes receiving a circuit design including a plurality of components associated with a plurality of component parameters. The method further includes adjusting a value of a particular component parameter of the plurality of component parameters based on a tolerance to generate a modified plurality of component parameters. The method further includes determining, based on inputting the modified plurality of component parameters into a circuit calculator, that an operating value of the circuit design is sensitive to the particular component parameter. The method further includes selecting a simulation of the circuit design to perform based on the particular component parameter. The method further includes performing the simulation to determine whether the circuit design supports one or more design limits.