Infineon TLE52052G: A High-Current H-Bridge Motor Driver IC for Automotive and Industrial Applications

The control of DC and stepper motors in high-reliability environments demands robust, efficient, and integrated solutions. Addressing this need, the Infineon TLE52052G stands out as a premier monolithic integrated H-Bridge motor driver IC. Engineered to excel in the demanding conditions of both automotive and industrial applications, this driver is designed to handle significant power with precision and protection.

At its core, the TLE52052G is built to control DC and bipolar stepper motors with a continuous output current of up to 5 A and a peak current reaching 6.5 A. This high-current capability makes it suitable for a wide array of powerful actuators, including power windows, sunroofs, seat adjusters, throttle valves, and industrial automation equipment. Its H-Bridge configuration allows for bidirectional control, enabling forward, reverse, and braking operations for a DC motor with just a few input signals.

A key strength of this IC is its robust integration of protection features, which is critical for operation in harsh electrical environments. These include overtemperature shutdown with a restart delay, which prevents thermal damage, and overvoltage and undervoltage lockout to ensure stable operation within its specified voltage range (5.5 V to 40 V). Crucially, it incorporates short-circuit protection (across the supply and ground) and overcurrent limitation, safeguarding both the IC and the connected motor from potential damage caused by fault conditions.

The device offers a simple interface, typically controlled via two TTL/CMOS compatible input pins that dictate the direction and mode of operation. For enhanced diagnostic capabilities, especially vital in automotive systems, it provides an active-low error flag output. This pin signals the microcontroller when a fault condition, such as overtemperature or short-circuit, has occurred, allowing for intelligent system responses.

Constructed using Infineon's proven Smart Power Technology (SPT), the TLE52052G achieves a low overall on-state resistance (RDS(on)) of typically 500 mΩ. This high efficiency translates into reduced power dissipation and lower heat generation, contributing to higher system reliability and potentially smaller heat sinks. Furthermore, its design prioritizes low electromagnetic interference (EMI), a mandatory requirement for automotive electronics to avoid interfering with sensitive onboard systems.

ICGOOODFIND: The Infineon TLE52052G is a highly integrated, robust, and efficient solution for high-current motor control. Its combination of high output current, comprehensive protection suite, diagnostic feedback, and automotive-grade reliability makes it an exceptional choice for designers developing next-generation applications in the automotive and industrial sectors.

Keywords: H-Bridge Motor Driver, Automotive Grade, Overcurrent Protection, 5A Continuous Current, Thermal Shutdown