Infineon TLE9842-2QX: A Comprehensive System Basis Chip for Automotive Applications
The relentless drive towards enhanced vehicle electrification, connectivity, and automation demands robust and highly integrated electronic control units (ECUs). At the heart of many modern automotive systems lies a critical component: the System Basis Chip (SBC). The Infineon TLE9842-2QX stands out as a premier example of this technology, offering a highly integrated single-chip solution designed to streamline design, reduce system cost, and improve reliability for a wide range of body and convenience applications.
This powerful SBC consolidates multiple discrete components into a single package. Its core is an ARM® Cortex®-M0 based 32-bit microcontroller, providing efficient processing power for managing various tasks. This is complemented by an extensive suite of peripheral functions, including a LIN (Local Interconnect Network) transceiver that is fully compliant with the latest LIN 2.x and SAE J2602 standards, making it ideal for creating LIN cluster nodes or sub-networks. Furthermore, it incorporates a high-voltage DC motor driver with integrated diagnostics, capable of driving loads such as window lifters, sunroofs, or small pumps directly, eliminating the need for an external power IC.
Power management is a cornerstone of its design. The TLE9842-2QX features a versatile voltage regulator system that supplies the internal microcontroller and can also provide power to external components. Its integrated watchdog and window watchdog timers enhance system safety by ensuring the microcontroller operates correctly. For robust communication and control, the chip offers multiple GPIOs (General-Purpose Input/Outputs) and a 10-bit Analog-to-Digital Converter (ADC) for reading sensor inputs.
A key focus for any automotive component is functional safety and robustness. The TLE9842-2QX is engineered to meet the stringent requirements of the automotive environment. It operates within a wide supply voltage range and is designed to withstand the electrical transients and static discharges common in vehicles. Its built-in protection features, such as over-temperature and over-current detection, safeguard both the chip and the system it controls.
Typical applications where the TLE9842-2QX excels include:
Door control modules (window lift, mirror adjustment)
Seat control units
Sunroof and smart roof modules
Body domain controllers and smart junction boxes
ICGOODFIND: The Infineon TLE9842-2QX is a quintessential System Basis Chip that encapsulates the trend towards higher integration in automotive electronics. By combining a capable MCU, LIN transceiver, motor driver, and power supply into one device, it significantly simplifies ECU architecture. This integration leads to reduced board space, lower component count, enhanced reliability, and ultimately a more cost-effective solution for automotive manufacturers, accelerating the development of next-generation vehicle systems.
Keywords: System Basis Chip (SBC), Automotive Applications, LIN Transceiver, Integrated Motor Driver, ARM Cortex-M0.
