Infineon TLE9261QXV33: A Comprehensive System Basis Chip for Automotive Power Management

The increasing complexity of automotive electronic systems demands highly integrated, robust, and reliable power management solutions. The Infineon TLE9261QXV33 stands out as a premier System Basis Chip (SBC) designed specifically to meet the stringent requirements of modern vehicle applications. This device combines multiple critical functions into a single package, simplifying system design, enhancing reliability, and reducing the overall component count in Electronic Control Units (ECUs).

At its core, the TLE9261QXV33 is engineered to power and manage microcontrollers in safety-relevant and comfort applications. Its primary feature is a high-efficiency switching pre-regulator followed by two low-dropout (LDO) linear voltage regulators, providing stable power to the microcontroller and other peripherals. This multi-stage regulation ensures optimal power efficiency, minimizing heat dissipation—a critical factor in the harsh under-the-hood environment.

A key strength of this SBC is its comprehensive suite of safety and protection features. It includes advanced monitoring capabilities such as voltage supervision for the microcontroller supply and a windowed watchdog timer to detect software failures. The chip also incorporates robust protection mechanisms against over-voltage, under-voltage, over-temperature, and short-circuit conditions, ensuring system resilience and compliance with automotive safety standards like ISO 26262.

Furthermore, the TLE9261QXV33 excels in network connectivity. It integrates a high-speed CAN FD (Flexible Data-Rate) transceiver, which is essential for high-bandwidth communication between ECUs in advanced driver-assistance systems (ADAS), gateways, and body control modules. The transceiver is designed for excellent electromagnetic compatibility (EMC) and features high immunity against electromagnetic interference (EMI), guaranteeing reliable data transmission in the electrically noisy automotive environment.

The device is offered in a space-saving PG-VQFN-48 package, making it ideal for space-constrained applications. Its AEC-Q100 qualified status guarantees its performance and reliability across the demanding automotive temperature range.

ICGOOODFIND: The Infineon TLE9261QXV33 is a highly integrated and robust System Basis Chip that consolidates power supply, communication, and safety functions. It is an optimal solution for designing efficient, compact, and reliable automotive ECUs, significantly reducing development time and system cost while enhancing overall performance and safety.

Keywords: System Basis Chip (SBC), Automotive Power Management, CAN FD Transceiver, AEC-Q100, ISO 26262.