Automotive Motor Control with the Infineon TLE9844-2QX Embedded Power IC

The evolution of automotive systems towards greater electrification demands highly integrated, robust, and efficient electronic control units (ECUs). At the heart of many auxiliary applications—from cooling fans and water pumps to window lifters and sunroofs—lies the precise control of small DC and BLDC motors. The Infineon TLE9844-2QX Embedded Power IC stands out as a premier solution, integrating a powerful Arm® Cortex®-M0 core with critical power and analog peripherals on a single chip. This high level of integration drastically reduces the system's component count, PCB size, and overall cost while enhancing reliability.

A key strength of the TLE9844-2QX is its dedicated motor control capabilities. The IC features a fully integrated NFET H-Bridge driver capable of delivering up to 25A peak current, making it suitable for a wide range of DC motor applications. For more complex brushless DC (BLDC) motor control, its integrated LIN transceiver and flexible PWM timers enable sophisticated sensorless or sensored commutation schemes using Field-Oriented Control (FOC). This allows for smooth, efficient, and quiet motor operation, which is critical for enhancing passenger comfort.

Beyond the core microcontroller and power stages, the device incorporates a comprehensive set of protection and diagnostic features essential for the harsh automotive environment. These include undervoltage lockout (UVLO), overcurrent protection (OCP), and overtemperature shutdown. Such features ensure safe operation under fault conditions, preventing damage to the motor and the ECU itself. Furthermore, its compliance with the AEC-Q100 automotive qualification standard guarantees performance and reliability under extreme temperatures and rigorous operating conditions.

ICGOOODFIND: The Infineon TLE9844-2QX is a highly integrated system-in-package (SiP) that exemplifies the trend of consolidating functionality for automotive body electronics. It successfully merges processing, communication, power management, and actuation into a single, compact device, simplifying design and accelerating time-to-market for next-generation automotive motor control applications.

Keywords:

Integrated Circuit (IC)

Brushless DC (BLDC) Motor

Embedded System

Automotive Qualification

Field-Oriented Control (FOC)