TLE94112ES: Infineon's Multi-Channel Half-Bridge Driver for Automotive DC Motor Control

In the rapidly evolving landscape of automotive electronics, efficient and reliable motor control is paramount. Infineon Technologies addresses this critical need with the TLE94112ES, a highly integrated, multi-channel half-bridge driver designed specifically for demanding automotive applications. This powerful IC is engineered to control a wide array of DC loads, including brushed DC motors, valves, and lamps, with exceptional precision and robustness.

The TLE94112ES stands out for its high level of integration, combining twelve low-RDS(on) MOSFET half-bridges into a single compact package. This architecture allows it to independently control up to six DC motors or a multitude of other inductive loads simultaneously. By integrating the power stages and drive logic, it significantly reduces the need for external components, saving valuable board space, simplifying design complexity, and enhancing overall system reliability.

A cornerstone of its design is the robust protection and diagnostic suite. Engineered for the harsh automotive environment, the IC features comprehensive protection mechanisms including overcurrent protection (OCP), overtemperature shutdown (OTSD), and undervoltage lockout (UVLO). Furthermore, it provides extensive diagnostic capabilities such as open-load detection, short-circuit detection, and SPI error flags. This allows for real-time system monitoring and ensures safe operation under fault conditions, which is a critical requirement for automotive functional safety standards like ISO 26262.

Communication is handled via a standard Serial Peripheral Interface (SPI), enabling a microcontroller to command all outputs and read back detailed diagnostic information with minimal wiring. This digital interface provides superior control and flexibility compared to traditional parallel interface drivers. The TLE94112ES also supports multiple PWM modes for efficient speed control of motors, helping to optimize acoustic performance and reduce power dissipation.

Its AEC-Q100 qualified status guarantees its performance and reliability for operation in the extreme temperature ranges and demanding conditions found in automotive systems. Typical applications extend beyond body electronics (e.g., power windows, sunroofs, seat adjustment) to include engine management systems and pump controls.

ICGOOODFIND: The Infineon TLE94112ES is a highly integrated, SPI-controlled 12-channel half-bridge driver that offers a powerful, space-efficient, and safe solution for controlling multiple DC loads in automotive environments. Its combination of high output power, extensive diagnostic features, and robust protection makes it an exceptional choice for next-generation vehicle design.

Keywords: Automotive Motor Control, Half-Bridge Driver, SPI Interface, Integrated Power MOSFETs, AEC-Q100 Qualified.