The changing roles of relays and fuses ROHM semiconductor switches provide greater reliability, safety and longer life IPD：Intelligent Power Device The emergence of self-driving cars and vehicles equipped with ADAS (Advanced Driver Assistance Systems) following improved safety countermeasures related to human life increases the importance of safety and reliability in electronic circuits. At the same time, there is a need for electronic systems to more reliably detect abnormalities to further improve vehicle safety. One way is to review the role of the power supply path which provides the source...

Standard fuses are designed with a certain margin against short-circuits and inrush current during power ON to prevent erroneous cutoff. In contrast, ROHM’s new IPDs are capable of both protecting against inrush current and masking the inrush current region, enabling high accuracy detection of even slight current abnormalities during steady state operation. Also, since the minimum current can be supplied instead of shutting down operation immediately after an abnormality occurs, they can be used for preventive maintenance by detecting abnormalities during circuit operation. Standard Mechanical...

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