Simyog

Accelerating EMC Compliance with Sensitivity & What-if Analysis

Authored by: Nikita Ambasana, Customer Success Manager


Compliance-Scope’s BCI Lab streamlines EMC optimization with two complementary tools: Sensitivity Analysis and What-if Analysis. Together, they identify critical components and validate design changes quickly, minimizing costly iterations.


Sensitivity Analysis – Quantify Component Impact

  • Select up to 10 components (R, L, C) for evaluation.

Sensitivity defined as:

S = (dy/dx)

where (y) = observed output (e.g., IC pin voltage) and (x) = component parameter.

  • Tool perturbs values slightly, computes output change, and maps sensitivity across frequency.

  • Use cases:

    • Identify high-impact components.

    • Pinpoint frequency ranges tied to EMC failures.

    • Guide fine-tuning in the linear region where proportional scaling holds.


What-if Analysis – Fast Design Exploration

  • Modify component values (e.g., +20% capacitance) and see EMC impact in seconds: No assumptions or approximations

  • Model-based approach: No need to re-run full 3D simulations.

  • Supports single and multi-pin modifications.

  • Results can be overlaid for direct scenario comparison.


Integrated Workflow

  1. Sensitivity Analysis → Identify critical components and failure regions.

  2. What-if Analysis → Validate modifications and converge on optimal values rapidly.

Result: A rigorous yet agile workflow that reduces design cycles, conserves simulation resources, and accelerates EMC compliance.

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