Infineon TLE9250VSJ: A Comprehensive Overview of the SBC for Automotive Networking

The increasing complexity of in-vehicle electronic architectures demands robust and highly integrated components. At the heart of many modern automotive designs lies the System Basis Chip (SBC), a pivotal component that consolidates multiple vital functions into a single package. The Infineon TLE9250VSJ stands out as a premier example, engineered specifically to meet the stringent requirements of next-generation automotive networking.

This SBC is a versatile and powerful device designed to serve as a central hub for electronic control units (ECUs), particularly those connected to high-speed CAN FD (Controller Area Network Flexible Data-Rate) and CAN XL networks. Its primary role is to manage power, communication, and supervision, thereby reducing the system's complexity, footprint, and total cost.

A key strength of the TLE9250VSJ is its high level of integration. It incorporates a CAN FD/CAN XL transceiver that supports data rates up to 8 Mbps (CAN FD) and beyond, ensuring seamless and reliable communication within the vehicle network. Alongside this, it features a voltage regulator that supplies a stable 3.3V or 5V output to power the microcontroller and other logic circuits. Furthermore, it includes a watchdog with a window function and a serial peripheral interface (SPI) for sophisticated communication and monitoring between the SBC and the host microcontroller. This integration simplifies the PCB design, enhances reliability, and minimizes the number of external components required.

Designed for the challenging automotive environment, the TLE9250VSJ excels in robustness and reliability. It offers comprehensive protection features such as undervoltage detection (UVD) and overvoltage protection (OVP) on its supply lines, safeguarding the system from electrical anomalies. The transceiver is immune to severe electromagnetic interference (EMI) and provides excellent ESD protection, exceeding ±8 kV, which is crucial for operation in harsh electrical conditions. Its operational junction temperature range of -40°C to 150°C ensures flawless performance under the hood, even in extreme climates.

Typical applications are vast, spanning across body control modules, gateways, sensor interfaces, and battery management systems (BMS) in electric vehicles. Any node on a CAN FD or CAN XL network that requires a regulated power supply and secure communication can benefit from the capabilities of this SBC.

ICGOO In summary, the Infineon TLE9250VSJ is a highly integrated and robust System Basis Chip that provides a complete power and communication solution for automotive ECUs. Its combination of a high-speed CAN transceiver, voltage regulator, and advanced monitoring features makes it an indispensable component for designing efficient, reliable, and compact automotive networking systems, paving the way for more connected and intelligent vehicles.

Keywords: System Basis Chip (SBC), CAN FD, Automotive Networking, Voltage Regulator, Robustness.