Rohm announces smart switches optimised for zonal controllers
Vehicle electronic control systems are becoming increasingly sophisticated, driving a shift toward Zonal Controllers. As a result, the use of smart switches for electronic load protection and control is growing.
To address this demand, Rohm has developed six new high-side Smart Switches (Intelligent Power Devices IPDs) with highly accurate current sensing capability and ON resistances from 9 mΩ to 180 mΩ.
Called the BV1HBxxxEFJ series, they are suitable for protecting loads and subsystems from abnormalities such as overcurrent, overvoltage, and overtemperature, ensuring reliable operation and safeguarding sensitive components in automotive lighting, body control such as, door locks and power windows. Wide ranging diagnostic capabilities, e.g., open load and reverse battery detection, further enhances safety and reliability.
The new products feature high-capacitance load driving capability, maximising performance at the critical interface between Zonal Controllers and output loads (including various ECUs).
Leveraging proprietary process technology makes it possible to achieve both low ON resistance and high inductive energy clamp – two characteristics typically involve a trade-off. The result is a well-balanced integration of three key performance metrics: drive capability, ON resistance, and energy tolerance, according to Rohm.
