Infineon TLE7209-2R: High-Current Half-Bridge Driver for Automotive Motor Control Applications

The efficient and reliable control of motors is a cornerstone of modern automotive design, powering everything from electric power steering and throttle control to HVAC systems and pumps. At the heart of these critical mechatronic systems lies the motor driver IC, which must operate with utmost robustness under the harsh conditions of an automotive environment. The Infineon TLE7209-2R stands out as a premier solution, engineered specifically to meet these demanding challenges.

This device is a monolithic integrated half-bridge driver capable of delivering high output currents of up to 3.5 A. This substantial current capability allows it to directly drive the gates of external power MOSFETs or even smaller DC motors itself, simplifying system design and reducing the need for additional amplification stages. Its operation is optimized for controlling brushed DC motors, which are ubiquitous in automotive applications due to their simplicity and cost-effectiveness.

A key strength of the TLE7209-2R is its exceptional robustness and integrated protection features. Designed to withstand the electrical hazards inherent in automotive systems, it includes comprehensive safeguards such as over-current protection (OCP), short-circuit protection (SCP), and over-temperature shutdown (OTSD). These features are crucial for preventing catastrophic failure and ensuring operational safety. Furthermore, its ability to handle negative voltage spikes at the outputs (up to -40 V) thanks to integrated clamp diodes makes it exceptionally resilient against the inductive kickback generated by motor windings, a common cause of IC failure.

The interface for the microcontroller (MCU) is designed for simplicity and noise immunity. It accepts standard 3.3 V and 5 V TTL/CMOS logic levels at its inputs, ensuring easy connection to modern microcontrollers without the need for level shifters. The driver also features a dedicated enable pin and two separate input pins for controlling the high-side and low-side switches, providing designers with flexible control over the motor's direction (forward, reverse, brake, and coast).

Fully qualified for the automotive industry, the TLE7209-2R operates over a wide temperature range of -40 °C to 150 °C and is compliant with the AEC-Q100 standard. This ensures long-term reliability and performance under the most extreme conditions found under the hood of a vehicle.

ICGOOODFIND: The Infineon TLE7209-2R is a robust, high-current half-bridge driver that exemplifies the integration and reliability required for next-generation automotive motor control. Its high output current, extensive suite of protective features, and resilience against electrical transients make it an ideal, all-in-one solution for driving DC motors and solenoids safely and efficiently in demanding automotive environments.

Keywords:

1. Half-Bridge Driver

2. Automotive Motor Control

3. High-Current Output

4. Integrated Protection Features

5. AEC-Q100 Qualified