Infineon TLE7240SLXUMA4: A High-Current Quad Channel Low-Side Switch for Automotive Applications

The increasing electrification of modern vehicles demands robust, efficient, and intelligent power management solutions. At the heart of many of these systems are low-side switches, which provide the crucial interface between microcontrollers and high-current loads like valves, motors, and lamps. The Infineon TLE7240SLXUMA4 stands out as a premier solution in this category, engineered specifically to meet the stringent requirements of the automotive industry.

This device integrates four independent low-side channels into a single compact package. Each channel is capable of continuously handling up to 0.7 A of output current, with a non-repetitive peak current of up to 1.5 A, making it suitable for a wide array of medium-power applications. A key feature of the TLE7240SL is its exceptionally low typical on-state resistance (RDS(on)) of just 0.5 Ω per channel. This high efficiency minimizes power dissipation and heat generation, which is critical for reliability in the harsh under-hood environment where ambient temperatures can soar.

Beyond its switching capabilities, the TLE7240SL is designed for intelligent diagnostics and robust protection. It offers comprehensive feedback to the controlling microcontroller, including load current sense proportional to the output current, which is vital for detecting open-load conditions both during on and off-states. Furthermore, the device is fortified with a suite of protective features such as overload protection, short-circuit protection, and over-temperature shutdown. These features ensure safe operation and prevent damage to both the switch and the connected loads under fault conditions.

The automotive-grade qualification of this component is paramount. It is designed to operate flawlessly within a wide supply voltage range and is resilient against the transients and voltage spikes common in automotive electrical systems, such as load dump pulses. Its AEC-Q100 compliance guarantees the quality and reliability expected by automotive manufacturers.

In application, the TLE7240SLXUMA4 simplifies design and saves space. It is ideal for driving a multitude of loads, including injectors, solenoids, relays, and small DC motors. Its SPI interface allows for precise digital control and detailed diagnostic reading from each channel, enabling smarter and more efficient system architectures.

ICGOO FIND：

The Infineon TLE7240SLXUMA4 is a highly integrated, intelligent quad-channel low-side switch that sets a high standard for power management in automotive applications. Its combination of high-current capability, superior efficiency through low RDS(on), and extensive diagnostic and protection features makes it an indispensable component for engineers designing next-generation vehicle systems that demand reliability, intelligence, and compactness.

Keywords：

Low-Side Switch

Automotive-Grade

High-Current

Diagnostics

SPI Interface