Infineon TLF30682QVS01: Multi-Voltage Power Supply System Basis Chip for Safety-Critical Applications

The increasing complexity of automotive electronic control units (ECUs), particularly those governing advanced driver-assistance systems (ADAS), electric power steering, and braking, demands robust and highly reliable power management solutions. Addressing this critical need, Infineon Technologies has developed the TLF30682QVS01, a sophisticated Multi-Voltage Power Supply System Basis Chip (SBC) designed specifically for safety-critical applications in harsh automotive environments.

This integrated circuit consolidates multiple vital functions into a single package, simplifying system design, reducing the bill of materials, and enhancing overall reliability. At its core, the TLF30682QVS01 features two high-efficiency step-down (buck) DC/DC controllers. These controllers are capable of generating the primary supply voltages for microcontrollers (MCUs) and other logic circuits, offering exceptional flexibility and power efficiency crucial for modern vehicle architectures.

A defining characteristic of this SBC is its unwavering focus on functional safety. It is engineered in compliance with the ISO 26262 standard, supporting system development up to ASIL D—the highest Automotive Safety Integrity Level. To achieve this, the chip incorporates a comprehensive suite of safety mechanisms and diagnostic features. These include under-voltage and over-voltage monitoring, over-current protection, and overtemperature shutdown. A dedicated window watchdog and a Fail-Safe Output stage ensure that the system can enter and maintain a safe state even in the event of a failure, which is paramount for applications where operational integrity is non-negotiable.

Beyond its power conversion and safety core, the TLF30682QVS01 integrates several other key interfaces. It includes a high-speed CAN FD (Flexible Data-Rate) transceiver, facilitating robust and high-bandwidth communication between ECUs within the vehicle network. Furthermore, it provides multiple low-dropout (LDO) linear regulators to power peripheral components and the SBC’s own internal functions, ensuring clean and stable voltage rails. The device operates over a wide input voltage range, making it resilient to load-dump and other voltage transients common in automobiles.

In summary, the Infineon TLF30682QVS01 represents a pinnacle of integration and reliability for next-generation automotive systems. By combining power supplies, communication interfaces, and extensive safety features into one device, it empowers engineers to build simpler, more robust, and safer electronic systems.

ICGOOODFIND: The Infineon TLF30682QVS01 is an all-in-one power management and safety solution that is indispensable for designing ASIL D compliant systems, reducing complexity while maximizing reliability and diagnostic coverage in automotive and other demanding applications.

Keywords: System Basis Chip (SBC), Functional Safety, ASIL D, Multi-Voltage Power Supply, CAN FD Transceiver.