Accelerating EMC Compliance with Sensitivity & What-if Analysis

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.