Simyog Webinar on Transformer Modeling for CISPR-25

Overview

‍‍
Accurate EMC prediction of isolated power converters requires more than modeling switching behavior and PCB parasitics. The isolation transformer itself can become a significant contributor to common-mode coupling and radiated emissions.

‍
In this webinar, SimYog explores how transformer model fidelity influences CISPR 25 conducted and radiated emissions predictions. Through simulation studies and real-world industry examples, the presenters demonstrate when simplified transformer models are sufficient and when full 3D electromagnetic representations become necessary.

‍
The session also examines transformer orientation effects, near-field coupling mechanisms, shielding strategies, and practical approaches for modeling devices where detailed transformer geometry may not be available. A live demonstration highlights new transformer modeling capabilities being introduced in Compliance-Scope®.

‍
Key Topics Covered

‍
• CISPR 25 simulation methodology for isolated power converters
• Transformer model choices and their impact on emissions prediction
• Conducted vs. radiated emissions sensitivity to model fidelity
• Near-field coupling and transformer orientation effects
• Shielding and housing impact on radiated emissions
• Ground-to-ground common-mode noise modeling techniques
• Correlation between simulation and measurement results

‍
Who Should Watch

‍
• EMC/EMI Engineers
• Power Electronics Designers
• Automotive Electronics Engineers
• Validation and Compliance Teams
• Engineers developing isolated DC-DC converters

‍
What You'll Learn

‍
• Why transformer modeling can significantly impact radiated emissions accuracy
• When macro-models are sufficient and when full 3D models are required
• How transformer fields interact with PCB structures and cables
• Practical techniques for improving EMC prediction confidence before hardware testing