MoM-Hb Algorithm for Prediction of High Voltage Interference in Automotive Active Circuitry

Electrical Performance of Electronic Packaging (EPEP)（2018）

Simyog Technol Private Ltd

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Abstract

The Bulk Current Injection (BCI) method is widely used for RF immunity testing of automotive systems. If detected at a late stage, compliance failures may lead to expensive redesigns and increased time to market. With the growing packing density of ECUs in automobiles, there is an urgent need to improve the prediction of BCI failures at an early design stage. Many such failures occur due to malfunction of discrete active components embedded on the PCB. In this work, it is demonstrated that a combined Method of Moments and Harmonic Balance approach can be used to accurately simulate such RF immunity tests without compromising on the non-linear response of the active elements. Further, it is demonstrated that a traditional Harmonic Balance approach will fail at high noise voltage levels which may be a likely scenario in many BCI tests with high injection clamp current specifications. A Line-Search intermediate step is introduced to address this issue. Numerical results demonstrate that the proposed method converges to accurate results faster.

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Key words

Harmonic Balance,BCI,Automotive,High Power,Line Search

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