Infineon TLE92108-231QX: A High-Performance Multi-Channel Half-Bridge Driver IC

In the rapidly advancing world of automotive electronics, efficient and reliable control of DC motors, solenoids, and other inductive loads is paramount. The Infineon TLE92108-231QX stands out as a premier solution, engineered to meet the stringent demands of modern vehicle systems. This highly integrated multi-channel half-bridge driver IC is designed to offer superior performance, enhanced diagnostic capabilities, and robust protection features, making it an ideal choice for a wide range of automotive applications.

At its core, the TLE92108-231QX is an SPI-configurable eight-channel half-bridge driver. This high level of integration allows it to control multiple loads independently from a single chip, significantly reducing the system's component count, PCB footprint, and overall complexity. Each of its eight channels can be configured and controlled via a serial peripheral interface (SPI), providing designers with exceptional flexibility for complex control schemes.

A key strength of this IC lies in its robust protection and diagnostic suite. It is equipped with comprehensive features including over-current detection (OCD), short-circuit protection (SCP), under-voltage lockout (UVLO), and over-temperature warning and shutdown (OTW/TSD). These integrated safeguards are crucial for ensuring system reliability in the harsh automotive environment, preventing damage to both the driver IC and the connected loads. Furthermore, its detailed diagnostic feedback via the SPI bus enables proactive system maintenance and simplifies troubleshooting.

The device is built using Infineon’s proven SMART7 technology, which combines vertical spin technology with deep trench isolation. This advanced process enables very low standby currents and high energy efficiency, which is critical for battery-powered applications, especially in electric and hybrid electric vehicles (EVs/HEVs) where every milliampere counts. The outputs are capable of driving loads with a wide operating voltage range, typically from 5.5 V to 28 V, covering standard automotive battery conditions.

Designed for the stringent AEC-Q100 qualification, the TLE92108-231QX guarantees reliable operation in the challenging automotive environment, characterized by extreme temperature fluctuations and electrical noise. Its ability to drive DC motors in both directions (bi-directional control) makes it perfectly suited for a multitude of applications, including engine management modules, transmission control units, HVAC systems, and advanced body electronics like power windows, sunroofs, and seat adjustment modules.

ICGOOODFIND: The Infineon TLE92108-231QX represents a significant leap in multi-channel motor control integration. Its combination of high channel count, advanced configurability via SPI, and a comprehensive set of diagnostic and protection features makes it an exceptionally powerful and reliable component. By simplifying design complexity and enhancing system resilience, it empowers engineers to develop next-generation automotive systems with greater efficiency and confidence.

Keywords: Half-Bridge Driver, SPI-Configurable, AEC-Q100, Multi-Channel, Automotive Diagnostics.