ROHM Introduces ASIL-B Compliant Power Management ICs for Automotive Camera Modules

ROHM Introduces ASIL-B Compliant Power Management ICs for Automotive Camera Modules

ROHM Semiconductor announced the availability of ISO 26262 and ASIL-B compliant PMICs, BD868xxMUF-C (BD868C0MUF-C, BD868D0MUF-C), for automotive camera modules, which are increasingly being adopted in Advanced Driver Assistance Systems (ADAS).

The continuing evolution of ADAS in recent years has increased the number of onboard cameras. At the same time, introducing the concept of functional safety is taking on greater importance, as the failure of even one camera can lead to a serious accident, making it imperative for manufacturers of cars and vehicle components including semiconductor suppliers to comply with the international safety standard ISO 26262.

In 2018, ROHM successfully achieved ISO 26262 Development Process certification from the German certification body TÜV Rheinland, and in 2021 launched the brand ComfySIL to contribute to the safety, security, and comfort of users and systems through products that support functional safety. As part of the ComfySIL series, these ICs are ‘FS (Functional Safety) process compliant’ products (the highest grade), indicating compliance with the ISO 26262 standard.

Meeting the strict requirements for functional safety allows these latest products to facilitate safety design in next-generation vehicles equipped with ADAS. Moreover, the four power supply systems necessary for automotive cameras are integrated into a 3.5 mm × 3.5 mm package, achieving the industry's smallest size in comparable camera PMICs. They are equipped with an anomaly status notification mechanism, such as abnormal voltage detection and feedback via I2C. This reduces the number of components by three compared to former solutions, which results in a 25% smaller mounting area compared to conventional solutions and contributes to smaller vehicle cameras. At the same time, a wide range of output voltage and sequence control settings can be configured to meet the varying requirements of CMOS image sensors from different manufacturers, considerably simplifying development.

Product Lineup

In addition to the four models (BD868A0MUF-C, BD868B0MUF-C, BD868C0MUF-C, BD868D0MUF-C) that comply with both ISO 26262 and ASIL-B, the lineup will include the non-ISO 26262 compliant BD868C1MUF-C for users that do not require ASIL compliance. Also, ROHM can offer products based on customer setup requirements, such as output voltages, voltage tolerances, sequencing, and functional safety requirements.

Key applications

Rearview/perimeter cameras, drive recorders, driver monitoring systems, etc.

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