Infineon TLE7239SL: A High-Current Octal Half-Bridge Driver for Automotive and Industrial Applications

In the demanding worlds of automotive electronics and industrial automation, the ability to control high-current loads with precision and reliability is paramount. Addressing this need, the Infineon TLE7239SL emerges as a highly integrated, octal half-bridge driver designed to deliver exceptional performance in the most challenging environments. This powerful IC serves as a critical interface between low-power microcontrollers and a wide array of high-power actuators.

Engineered for robustness, the TLE7239SL is capable of driving loads such as solenoids, valves, motors, and lamps with its eight independent half-bridge channels. Each channel can deliver a continuous output current of up to 700 mA, with a non-repetitive peak current capability of 1.2 A, making it suitable for a broad spectrum of applications. Its operational supply voltage range of 5.5 V to 36 V, with a load dump survival voltage up to 40 V, ensures unwavering performance amidst the voltage transients typical in automotive electrical systems.

A key strength of this driver lies in its integrated protective features, which are essential for mission-critical applications. These include overtemperature shutdown with a programmable threshold, overcurrent protection, and undervoltage lockout (UVLO). Furthermore, its serial peripheral interface (SPI) allows for extensive diagnostic capabilities, enabling the system microcontroller to monitor output status, overtemperature warnings, and open-load conditions, thereby facilitating predictive maintenance and enhancing system safety.

The device’s low electromagnetic emission (EME) and high electromagnetic immunity (EMI) are a direct result of its sophisticated slew-rate control and well-designed output stages. This is a critical design consideration for automotive applications, where strict EMC standards must be met to avoid interfering with sensitive surrounding electronics.

Beyond the engine bay, the TLE7239SL finds significant utility in industrial settings. It is ideal for driving multiple solenoids in hydraulic or pneumatic control systems, controlling arrays of LEDs in industrial lighting, or managing small DC motors in conveyor systems. Its compact package and high level of integration help reduce the overall PCB footprint and system cost.

ICGOOFIND

The Infineon TLE7239SL stands out as a robust and versatile integrated solution for driving high-current inductive and resistive loads. Its combination of high output current, extensive diagnostic suite, and superior protective functions makes it an exemplary choice for designers building reliable and intelligent systems for the automotive and industrial markets.

Keywords: High-Current Driver, Octal Half-Bridge, Automotive Applications, SPI Diagnostics, Load Dump Protection