Infineon TLE75008-EMD: A High-Performance 40 V Octal Low-Side Switch for Automotive Applications

The increasing electrification of modern vehicles demands robust, efficient, and intelligent power management solutions. Addressing this need, the Infineon TLE75008-EMD stands out as a highly integrated octal low-side power switch designed specifically for the rigorous demands of the automotive environment. This device combines eight independent channels into a single package, offering a compact and reliable solution for driving a wide array of resistive and inductive loads, such as solenoids, valves, lamps, and LEDs.

Engineered for 40 V operating voltage, the TLE75008-EMD provides exceptional resilience against load-dump and overvoltage transients common in 12 V automotive power systems. Each of its eight channels can deliver a continuous current of up to 350 mA, with a very low typical on-state resistance (RDS(on)) of 2.2 Ω, ensuring minimal power dissipation and high energy efficiency. This is critical for reducing heat generation and improving overall system reliability.

A key feature of this device is its advanced diagnostic and protection capabilities. It offers comprehensive feedback to the microcontroller, including open-load detection both in on-state and off-state, output short-to-ground and short-to-Vbat detection, and over-temperature warnings and shutdown. These diagnostics are crucial for functional safety, enabling the system to identify and respond to faults proactively, which is a cornerstone of modern automotive design standards like ISO 26262.

The integration of a 16-bit Serial Peripheral Interface (SPI) allows for precise individual control of each channel and the readout of detailed diagnostic information. This digital interface simplifies wiring, reduces the number of GPIOs required from the host microcontroller, and enables sophisticated control schemes. Furthermore, the device features a parallel enable input for quickly switching all channels off simultaneously, enhancing system safety.

Housed in a space-saving PG-DSO-36 package, the TLE75008-EMD is optimized for high-density PCB layouts. Its AEC-Q100 qualified status guarantees its performance and reliability for use in the most demanding automotive applications, from body control modules and interior lighting to engine management systems.

ICGOODFIND: The Infineon TLE75008-EMD is a superior integrated solution that delivers power, intelligence, and robustness. Its high level of integration, combined with extensive diagnostic features and a 40 V rating, makes it an ideal choice for designers aiming to create more compact, efficient, and reliable automotive electronic systems, ultimately contributing to the evolution of next-generation vehicles.

Keywords:

Automotive Power Switch

Low-Side Driver

Diagnostic Features

SPI Interface

AEC-Q100 Qualified