ROHM Unveils Semiconductor Fuse BV2Hx045EFU-C
With inrush current using only a single device
System protection from normal current and overcurrent


ROHM announced on the 5th that it has developed BV2Hx045EFU-C, a high-side intelligent power device (IPD) for electronic control units (ECUs) mounted on the battlefield.

An IPD is a device that can protect electronic circuits from electrical breakdown, that is, overcurrent. Unlike conventional fuses, it is called a semiconductor fuse because it can protect circuits without destruction or degradation using semiconductor technology, and it can be used to build maintenance-free systems.

The BV2Hx045EFU-C can protect the system from inrush current and normal current overcurrents with a single device, enabling stable system operation. In addition, it can send an error signal to the MCU in the event of an abnormality such as overcurrent, contributing to the establishment of system functional safety.

The overcurrent protection range can be adjusted by changing the constants of the external capacitor and resistor, allowing it to be used in various systems. Sample shipments of the BV2HC045EFU-C and BV2HD045EFU-C began last June, and mass production is scheduled to start in January 2020 with a production capacity of 1 million units per month.