Infineon IFX91041EJV: High-Current H-Bridge Motor Driver for Automotive Applications

The evolution of automotive systems towards greater electrification demands robust and intelligent components that can handle high power in harsh environments. At the forefront of this transition is the Infineon IFX91041EJV, a monolithic integrated H-Bridge motor driver engineered specifically for demanding automotive applications. This driver is designed to control a wide array of loads, from DC and brushless DC (BLDC) motors to solenoids and actuators, which are integral to functions like power tailgates, power sliding doors, electric pumps, and throttle control.

A key strength of the IFX91041EJV lies in its impressive output current capability, delivering a continuous current of up to 30A and handling peak currents as high as 80A. This high-power capacity allows it to drive even the most demanding motors directly, simplifying system design by reducing the need for additional discrete power components. The device is built upon Infineon's proven and robust SMART Power MOSFET (SPT) technology, which ensures low static and dynamic losses, leading to high efficiency and reduced thermal stress.

Beyond raw power, the driver integrates a comprehensive suite of advanced protection and diagnostic features crucial for automotive safety and reliability. These include protection against over-current (OCP), over-temperature (OTSD), under-voltage (UVLO), and over-voltage (OVP). A dedicated fault pin provides immediate system feedback, while sophisticated diagnostic capabilities, such as current sensing via a dedicated PROPI pin, allow for precise load monitoring and closed-loop control.

The IFX91041EJV operates from a wide supply voltage range, typically from 5.5 V to 28 V, making it compatible with standard 12 V vehicle power systems and resilient against load-dump events. Its operation is controlled via a simple parallel (IN1/IN2) interface, making it easy to integrate with a host microcontroller (MCU). Packaged in a thermally enhanced, space-saving PG-VQFN-48 package, it offers excellent thermal performance while meeting the strict AEC-Q100 qualification standard for automotive-grade components.

ICGOOODFIND: The Infineon IFX91041EJV stands out as a highly integrated, powerful, and intelligent solution for automotive motor control. Its combination of high-current output, robust protection features, and extensive diagnostic capabilities makes it an ideal choice for engineers designing next-generation automotive body electronics and powertrain systems that require uncompromising reliability and performance.

Keywords:

H-Bridge Motor Driver

Automotive Applications

High-Current Output

Protection Features

AEC-Q100 Qualified