ROHM Co., Ltd. has unveiled a scalable power supply solution for automotive systems-on-a-chip (SoCs), positioning itself to cater to the increasing demand for advanced automotive technology. This new solution combines the PMIC BD968xx-C Series with the DrMOS BD96340MFF-C, aimed at applications such as Advanced Driver Assistance Systems (ADAS), Driver Monitoring Systems (DMS), and sensing cameras.
The rise in performance demands for automotive SoCs, fueled by advancements in ADAS, in-vehicle camera functionality, and Electronic Control Unit (ECU) integration, has led to a shift towards domain architectures centered around domain controllers. To meet these challenges, power supply designs now need to incorporate low-voltage, high-current operation alongside advanced power sequencing control and stringent reliability requirements.
Traditional power supply designs require extensive customization to manage variations among different SoC manufacturers and generations, often necessitating redesign during new model rollouts. These complexities have historically increased both development time and verification workload. In response, ROHM's solution, based on a 'Configurable' design concept, provides flexibility to accommodate a broad range of SoC power needs.
The scalable solution allows for power supply designs that can adapt to a wide array of SoCs, from low-end to high-end models, by flexibly combining main configurable PMICs, sub PMICs, and DrMOS devices according to specific application and performance requirements. This approach not only reduces development efforts during platform expansion but also enhances power efficiency and fosters design reuse.
The PMICs, operating within a 2.7 V to 5.5 V input voltage range, are tailored for standalone operation with low-end SoCs—specifically, the BD96803Qxx-C and BD96811Fxx-C models. For high-performance SoCs that demand low-voltage, high-current operation, the BD96805Qxx-C and BD96806Qxx-C models can be combined with the DrMOS BD96340MFF-C.
All PMICs are housed in wettable flank QFN packages, while the DrMOS employs a flip-chip QFN package. Each component is AEC-Q100 qualified, providing high reliability for in-vehicle applications, an essential criterion for automotive technologies.
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