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ROHM has introduced configurable a PMIC and DrMOS power supply solution for automotive SoCs used in ADAS, driver monitoring systems and sensing cameras. The approach combines the BD968xx-C PMICs with the BD96340MFF-C DrMOS to support different SoC power requirements across vehicle platforms.

For eeNews Europe readers, the development is relevant because power design is becoming a larger challenge as vehicles move toward domain architectures and higher-performance compute. A configurable PMIC approach could help engineering teams reduce redesign work when adapting platforms across SoC vendors or performance levels.

Power design for domain architectures

Automotive SoCs are increasingly being used in ADAS, camera systems and integrated ECUs, where low-voltage, high-current rails and accurate sequencing are needed. These requirements can make conventional power architectures harder to reuse across different vehicle models or SoC generations.

ROHM’s solution is based on a configurable power design concept. It allows developers to combine main PMICs, sub PMICs and DrMOS devices depending on application needs, from low-power sensing cameras to high-performance ADAS and cockpit integration systems.

The company positions the architecture as a way to support platform expansion while reducing development and verification effort.

PMIC and DrMOS combinations

All PMICs in the lineup support a 2.7 V to 5.5 V input voltage range. The BD96803Qxx-C and BD96811Fxx-C are aimed at standalone operation with lower-end SoCs, while the BD96805Qxx-C and BD96806Qxx-C can be paired with the BD96340MFF-C DrMOS for higher-current SoC power rails.

The PMICs use wettable flank QFN packages, while the DrMOS device is supplied in a flip-chip QFN package. All devices are AEC-Q100 qualified for automotive use.

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