Infineon TLE7368EXUMA3: A Comprehensive Overview of its Features and Applications

The Infineon TLE7368EXUMA3 stands as a highly integrated, monolithic power supply system IC, specifically engineered to meet the rigorous demands of modern automotive electronic systems. As a quintessential part of Infineon's extensive portfolio, this System Basis Chip (SBC) is designed to provide a robust and reliable foundation for microcontroller-based applications, particularly in body control modules, gateways, and lighting systems.

At its core, the TLE7368EXUMA3 is a multi-voltage regulator. Its most prominent feature is a high-efficiency step-down (buck) DC-DC controller capable of delivering a programmable output voltage with currents up to 450 mA. This is complemented by two fully independent low-dropout (LDO) linear voltage regulators, providing stable 5V and 3.3V supplies for microcontrollers, sensors, and other logic circuits. This multi-rail output architecture ensures a clean, stable, and efficient power supply for all components within an electronic control unit (ECU).

Beyond power management, the device integrates a rich set of peripheral functions that significantly reduce the system's component count and board space. A key feature is its integrated high-speed CAN (Controller Area Network) transceiver, which supports data rates up to 1 Mbaud and is fully compliant with the ISO11898-2 and ISO11898-5 standards. This allows for seamless and robust communication within the vehicle network. Furthermore, the chip includes a window watchdog timer and a serial peripheral interface (SPI) for enhanced system monitoring and secure communication with the host microcontroller.

The TLE7368EXUMA3 is built with robust protection mechanisms and diagnostic features paramount for automotive environments. It offers comprehensive safeguards including overvoltage protection (OVP), undervoltage lockout (UVLO), overtemperature shutdown (TSD), and short-circuit protection on all outputs. Its diagnostic capabilities allow for real-time monitoring of its own status and the status of the supplied voltages, enabling the system to react to faults proactively and ensure functional safety.

Its primary applications are deeply rooted in the automotive sector:

Body Control Modules (BCM): It is ideal for powering the MCU and providing the CAN interface for central vehicle control functions like window lifts, door locks, and interior lighting.

Gateway Modules: Acting as a communication hub between different vehicle networks (e.g., CAN, LIN), its stable power rails and integrated CAN transceiver make it a perfect fit.

Advanced Lighting Systems: The chip can manage the power and communication needs for sophisticated front and rear lighting applications.

ICGOODFIND: The Infineon TLE7368EXUMA3 is a superior System Basis Chip that exemplifies high integration, reliability, and efficiency. By combining multiple voltage regulators, a CAN transceiver, and extensive protection features into a single package, it provides a compact, cost-effective, and failsafe solution for automotive electronic control units, simplifying design and accelerating time-to-market.

Keywords: Automotive SBC, Multi-Voltage Regulator, CAN Transceiver, System Basis Chip, Power Management IC