Events & Webinars

Bulk Current Injection (BCI) failures can be difficult to diagnose when conventional filtering does not solve the problem. In this webinar, we examine a real automotive inductive position sensor that consistently failed ISO 11452-4 BCI testing between 20 and 30 MHz.

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Using Compliance-Scope, the complete BCI test environment was recreated virtually to trace how common-mode noise traveled through the cable harness, PCB, and sensor winding structure before appearing as differential-mode voltage at sensitive IC pins. The analysis revealed that parasitic coupling and resonance within the sensor’s secondary winding filter network—not the expected power or signal paths—were driving the failure.

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Attendees will see how simulation, sensitivity analysis, and What-If analysis were used to identify the dominant components, evaluate alternative filter configurations, and select a mitigation before modifying hardware. The simulated failure range of 19–27 MHz closely matched the 20–30 MHz failure measured in the lab, with the final hardware test confirming the simulated solution.

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Presenter

Vasanthi T. L., Applications Engineer, SimYog Technology

Vasanthi is an Application Engineer within the Models Team at Simyog Technology, where she works on simulation models for EMC applications. A 2024 M.Tech. graduate from IIT Kharagpur’s Department of Electronics and Electrical Communication Engineering, her technical interests lie in Electromagnetics and RF Engineering.

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®.

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In this webinar, SimYog demonstrates how simulation can replace much of this trial-and-error process for buck converter designs targeting CISPR 25 conducted and radiated emission compliance. Through a structured walkthrough covering filter topology optimization, IC-level noise reduction, and a detailed radiated emissions case study, the session shows how engineers can use Compliance-Scope® to make smarter design decisions — on both the PCB and IC side — before hardware is ever built.

In this webinar, SimYog demonstrates how simulation can be used to front-load EMC analysis for automotive lighting, specifically focusing on boost converter-based LED drivers tested to CISPR 25 conducted emission limits. Through a detailed walkthrough of the modeling methodology, component sensitivity studies, and a live demonstration in Compliance-Scope®, the session shows how engineers can gain reliable EMC insight well before a PCB prototype is available.

This webinar makes the case for predictive, multiscale EMC modeling integrated directly into the design cycle. Presented by Nikita Ambassana, the session explains why automotive EMC is inherently a multiscale problem — spanning spatial scales from the nanometer-level MOSFET all the way to meter-long vehicle harnesses — and demonstrates how Compliance-Scope® brings all of these scales together in a single unified simulation environment. The session covers conducted emissions, radiated emissions, bulk current injection, and radiated immunity, with real customer validation data and diagnosis case studies showing how simulation can both predict failures and guide engineers to the right fix.

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