Infineon TLE5208-6G: A High-Current H-Bridge Motor Driver IC

The Infineon TLE5208-6G is a monolithic integrated H-Bridge circuit designed for the precise control of DC motors in a wide range of automotive and industrial applications. This robust driver IC is engineered to handle high current loads, making it an ideal solution for driving motors in power steering systems, throttle control, actuators, and general industrial automation.

At its core, the device incorporates a full H-Bridge configuration, which allows it to control the direction of a DC motor by applying a voltage polarity across the motor terminals. The TLE5208-6G can deliver a continuous output current of up to 8.5 A and withstand peak currents as high as 16 A, providing substantial power for demanding mechanical systems. Its low saturation voltage of typically 0.5 V (at 2 A) ensures high efficiency and minimal power dissipation, which is critical for maintaining thermal stability.

A key feature of this IC is its comprehensive suite of integrated protection functions. These include overtemperature shutdown, which prevents the silicon from being damaged by excessive heat, and overvoltage protection that safeguards the circuit from voltage spikes common in automotive environments. Crucially, it also features short-circuit protection for all outputs to ground or the supply voltage (VS), and cross-conduction prevention logic, which ensures that both high-side switches are never on simultaneously, a common cause of catastrophic failure.

The control interface is straightforward, requiring only two TTL/CMOS-compatible input signals (IN1 and IN2) to select the motor's state: forward, reverse, brake, or free-running. An enable pin (EN) provides an additional layer of control, allowing the outputs to be switched off entirely. The device also provides diagnostic feedback through an error flag pin, which signals the occurrence of an overtemperature or overvoltage event.

Housed in a robust PG-DSO-20-37 (Exposed Pad) package, the TLE5208-6G offers excellent thermal performance. The exposed die pad allows for efficient heat transfer to the PCB, enabling the IC to handle its high current ratings reliably.

ICGOODFIND Summary: The Infineon TLE5208-6G stands out as a highly robust and reliable H-Bridge motor driver, integrating high-current handling capability with a full suite of protective features. Its efficiency, diagnostic capabilities, and resilience make it a premier choice for mission-critical automotive and industrial motor control applications.

Keywords: H-Bridge, Motor Driver, Overcurrent Protection, High-Current, Automotive Grade.