New SerDes ICs and PMIC Reduce EMI and Power Consumption in Automotive Satellite Camera Modules

ROHM has developed new SerDes ICs (BU18xMxx-C series) and a PMIC (BD86852MUF-C) for vehicle satellite camera modules for Advanced Driver Assistance Systems (ADAS). SerDes ICs with a new PMIC for cameras utilize a spread spectrum function to reduce EMI and simplifies EMI countermeasures, which often require significant man-hours during the design of automotive applications. Both the released devices together help in miniaturization and low power consumption of modules and also provide features such as low electromagnetic noise (EMI) that reduces development time. Both BU18xMxx-C SerDes ICs and BD86852MUF-C PMICs are qualified under the AEC-Q100 to meet the reliability requirements 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. 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 Power Management ICs optimally manage the power supply systems of CMOS image sensors from all major manufacturers which enables 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. The 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.