TLE7258D: Infineon's High-Speed CAN Transceiver for Automotive Networks

The evolution of modern vehicles into complex, software-defined systems hinges on the robust and reliable exchange of data between electronic control units (ECUs). At the heart of this communication lies the Controller Area Network (CAN), and its performance is critically dependent on the physical layer transceivers that connect the digital protocol to the physical bus. Infineon's TLE7258D stands out as a premier high-speed CAN transceiver, engineered to meet the stringent demands of next-generation automotive networks.

Designed for classic CAN and CAN FD (Flexible Data-Rate) applications, the TLE7258D facilitates communication at speeds up to 5 Mbit/s in the data phase of CAN FD, enabling the rapid data transfer required for advanced driver-assistance systems (ADAS), powertrain management, and body control modules. Its core function is to convert the digital data streams from a CAN controller into differential signals on the bus and vice versa, ensuring signal integrity across the vehicle's network.

A key strength of the TLE7258D is its exceptional robustness and electromagnetic compatibility (EMC). It is meticulously designed to withstand the harsh electrical environment of an automobile, featuring very high electrostatic discharge (ESD) protection up to ±8 kV (according to IEC 61000-4-2) on the bus pins. This inherent ruggedness significantly enhances system reliability and reduces the need for additional external protection components, simplifying board design and lowering overall system cost.

Furthermore, the device incorporates advanced power management and diagnostic capabilities. It offers a very low-current standby mode with bus wake-up functionality, which is essential for supporting partial networking and meeting the strict low-power requirements of modern vehicles. Comprehensive diagnostic features, such as permanent dominant detection, thermal shutdown, and supply voltage monitoring, allow for immediate system feedback and fault containment, contributing to functional safety goals.

Compliant with the ISO 11898-2:2016 standard and often qualified according to AEC-Q100, the TLE7258D is a cornerstone for building scalable and future-proof automotive architectures. Its combination of high-speed performance, outstanding resilience, and integrated safety features makes it an ideal choice for architects designing systems that adhere to functional safety standards like ISO 26262.

ICGOOODFIND: The TLE7258D from Infineon is a highly robust and reliable high-speed CAN FD transceiver, offering superior EMC performance, integrated protection, and advanced diagnostic features. It is a critical enabler for the high-bandwidth and safety-critical communication networks that define the future of automotive electronics.

Keywords: CAN FD, Automotive EMC, AEC-Q100, Functional Safety, Low-Power Mode