ROHM has announced the development of SerDes ICs (BU18xMxx-C series) and a PMIC (BD86852MUF-C) ideal for vehicle satellite camera modules for Advanced Driver Assistance Systems (ADAS).
The new products not only solve issues concerning the miniaturization and low power consumption of modules but also provide features such as low electromagnetic noise (EMI) that reduces development time.
ADAS applications are using a combination of devices that perform different sensing and distance methods, such as LiDAR, radar, sonar, and cameras.
Among these, cameras play an important role in detecting objects and risk situations in the surrounding vehicle. Latest cars are equipped with up to 10 cameras or more per vehicle.
Furthermore, as ADAS becomes increasingly sophisticated, the number of cameras is expected to rise together with the camera performance. To accommodate this increase in the number of cameras – given the limited available space due to vehicle design requirements – there is a growing demand for smaller boards and vehicle satellite camera modules that consume less power.
ROHM solves these challenges by combining SerDes ICs with a new PMIC for cameras. Both products utilize a spread spectrum function to reduce EMI. This also simplifies EMI countermeasures, which often require significant man-hours during the design of automotive applications.
The BU18xMxx-C SerDes IC optimizes the transmission rate based on video resolution, making it possible to reduce power consumption by 27% over general products.
At the same time, the built-in spread-spectrum function reduces the EMI peak by 20dB, while an integrated video sticking detection function improves the reliability of the entire ADAS system by detecting frozen images.
The BD86852MUF-C PMIC (Power Management IC) for cameras is designed to optimally manage the power supply systems of CMOS image sensors from all major manufacturers.
This allows voltage settings and sequence control to be performed with a single IC, reducing mounting area by 41% and contributing to the miniaturization of vehicle camera modules. In addition, a camera PMIC heat concentration distribution circuit can be configured to lower power consumption by achieving a high conversion efficiency of 78.6% that suppresses heat generation.
ROHM is committed to continuing to support the evolution of vehicles by developing products that reduce power consumption while delivering higher system reliability.