#Japan #ROHM #Kyoto #Smart Switches #Zonal Controllers

Introduction

In a remarkable boost to automotive technology, ROHM Co., Ltd. has unveiled six new high-side smart switches, known as the BV1HBxxxEFJ series. Designed specifically for zonal controllers, these intelligent power devices (IPDs) provide advanced capabilities that ensure protection and efficiency in automotive lighting and body control systems.

Key Features

The new smart switches, including models BV1HB008EFJ-C, BV1HB012EFJ-C, BV1HB020EFJ-C, BV1HB040EFJ-C, BV1HB090EFJ-C, and BV1HB180EFJ-C, feature cutting-edge technology that assures low ON resistances ranging from 9 milliohms to 180 milliohms. This range not only optimizes performance but also secures the components against potential damage caused by overvoltage, overcurrent, and overtemperature conditions. This kind of precision is paramount for ensuring that critical automotive systems, such as door locks and power windows, function seamlessly.

Innovative High-Capacitance Driving Capability

One standout feature of the new BV1HBxxxEFJ series is its high-capacitance load-driving capability. Traditional smart switches frequently struggle with managing the driving needs of high-capacitance loads, which is crucial for zonal controllers that are responsible for a significant number of loads. By leveraging proprietary technologies, ROHM has created switches that excel in providing the necessary power at this vital interface. This achievement marks a turning point, as it allows engineers to integrate multiple outputs without compromising on safety or performance.

Enhanced Diagnostic Capabilities

In addition to managing power effectively, these smart switches boast extensive diagnostic features, including open load detection and reverse battery detection. These capabilities enhance overall safety and reliability, giving manufacturers confidence through advanced protective measures that guard against unexpected faults. The incorporation of a best-in-class current-sensing function, which boasts a high precision of +/-5%, further fortifies the protection of harnesses connected to external loads, ensuring system integrity.

Energy Efficiency and Design Versatility

High efficiency is another hallmark of the BV1HBxxxEFJ series. The design integrates both low ON resistance and high inductive energy clamp performance—two features that often see the compromise in traditional components. This ideal balance between drive capability, energy tolerance, and resistance ultimately maximizes the system's efficiency, which is a notable boon for modern automotive applications.

The smart switches come packaged in a compact HTSOP-J8 design that allows easy integration into diverse automotive layouts, offering engineers significant design versatility.

Applications

These innovative devices are suitable for a range of automotive applications, including body applications, powertrain controls, and various switches. As the automotive industry pivots towards greater electrification and smarter vehicles, these smart switches represent a pivotal advancement in dependable automotive technology.

Conclusion

In today's automotive market, where safety and efficiency are paramount, ROHM's new BV1HBxxxEFJ high-side smart switches are set to redefine the standard for zonal controllers. With their advanced features, they promise not just to protect, but also to elevate the performance of next-generation vehicles. As manufacturers increasingly focus on integrating smart technologies into their designs, ROHM's cutting-edge solutions are positioned to meet and exceed these expectations, paving the way for a new era of intelligent automotive systems.