Selectivity in Electronic Fusing of Low-voltage Automotive Electrical Systems

The article delves into the intricacies of selectivity in electronic fusing (eFuses) for low-voltage automotive electrical systems, emphasizing the fundamental differences from conventional fuses. It examines the impact of Li-ion battery integration on selectivity design and the crucial role of selectivity in maintaining the safety of vehicle electrical systems. The text also explores the challenges of selectivity violations, such as the premature tripping of higher-level eFuses, and the design demands imposed by these issues. A comparison of selectivity between eFuses and conventional fuses is provided, showcasing the denser gradation and higher design requirements of eFuses. The article concludes by discussing the characteristics of selectivity violations and the factors contributing to these violations, offering insights into the complexities of eFuse implementation in modern vehicle architectures.