Infineon TLE82092SAAUMA1: A Robust 6-Channel Low-Side Switch for Modern Automotive Systems

The increasing electrification of automotive systems demands highly reliable, efficient, and compact semiconductor solutions. Addressing this need, the Infineon TLE82092SAAUMA1 stands out as a premier 6-channel low-side switch engineered specifically for the rigorous demands of the automotive environment. This device integrates multiple functions into a single package, providing a powerful and space-saving solution for driving a wide array of resistive, inductive, and capacitive loads.

Core Features and Technological Advantages

At its heart, the TLE82092SAAUMA1 is built upon Infineon's proven SMART7 technology. This advanced process enables exceptional performance, including very low standby current and high efficiency, which is critical for modern vehicles where minimizing quiescent power consumption is paramount for energy management and meeting leakage current requirements.

Each of the six channels can independently control loads with a continuous current of up to 0.7 A per channel. The outputs are protected by a combination of active limiting and thermal shutdown, safeguarding the IC against short circuits to battery (SCB) and overtemperature conditions. A key feature is the integrated charge pump, which allows for complete control of inductive loads down to very low supply voltages, ensuring stable operation even during critical events like cold-cranking.

Diagnostics and communication are facilitated through a 16-bit SPI interface. This allows the microcontroller to not only command each output but also to read back detailed status information, including output state, overtemperature pre-warning, and open-load detection both in on and off states. This level of diagnostic capability is essential for functional safety (FuSa) applications, supporting systems aiming for ASIL compliance.

Target Applications

The versatility of the TLE82092SAAUMA1 makes it suitable for a broad spectrum of automotive applications, including:

Body Control Modules (BCMs): Controlling interior lights, window lifters, and wipers.

Seat Control Units: Driving motors for adjustment and heating elements.

Engine Management Systems: Actuating solenoids and valves.

HVAC Systems: Controlling fans and blend doors.

Packaging and Robustness

Housed in a space-efficient PG-DSO-36-47 package, the device is designed for automated PCB assembly. It is qualified for the harsh automotive environment, operating over a wide temperature range and offering high immunity to electrostatic discharge (ESD) and electrical transients, as stipulated by industry standards.

ICGOOODFIND

The Infineon TLE82092SAAUMA1 is an exemplary integrated power solution that combines high density, robust protection, and comprehensive diagnostics. Its design prioritizes reliability and efficiency, making it an ideal choice for automotive designers seeking to simplify architecture, reduce system size, and enhance the overall intelligence and safety of electronic control units.

Keywords: Automotive Low-Side Switch, SMART7 Technology, SPI Diagnostics, Functional Safety (FuSa), Integrated Charge Pump