Infineon BTS611L1E3128A: High-Side Smart Switch for Automotive and Industrial Applications

The Infineon BTS611L1E3128A represents a highly integrated high-side power switch designed to meet the rigorous demands of both automotive and industrial applications. Combining robust performance with advanced diagnostic and protection features, this device is engineered to drive resistive, capacitive, and inductive loads with exceptional reliability and efficiency.

Constructed using Infineon’s proprietary Smart High-Side Power Technology, the BTS611L1E3128A offers a continuous current rating of up to 11 A and operates within a voltage range from 5.5 V to 40 V, making it suitable for a variety of 12 V and 24 V systems. Its low on-state resistance (RDS(on)) ensures minimal power dissipation, which enhances energy efficiency and reduces thermal stress, critical for applications where heat management is a priority.

A key strength of this smart switch lies in its comprehensive suite of integrated protection functions. These include protection against overload, short-circuit, over-temperature, and over-voltage conditions, significantly improving system durability and preventing catastrophic failures. The device also provides diagnostic feedback via a current sense pin that delivers a proportional current output, enabling precise load current monitoring. This feature is invaluable for implementing predictive maintenance and real-time system health checks.

The BTS611L1E3128A is particularly well-suited for automotive applications such as driving lights, heaters, motors, and solenoids, as well as industrial loads like actuators, sensors, and small DC motors. Its ability to handle inrush currents—common in lamp and capacitive load applications—further underscores its robustness. The device’s electrostatic discharge (ESD) protection and reverse battery protection capability also contribute to its resilience in harsh electrical environments.

Packaged in a PG-TO-252-5 (DPAK) housing, the component offers efficient thermal performance and is designed for easy PCB mounting. With its combination of power handling, intelligence, and resilience, the BTS611L1E3128A stands out as a versatile solution for modern electronic systems requiring compact and reliable power switching.

ICGOOODFIND

The Infineon BTS611L1E3128A is an advanced high-side switch offering high current capability, integrated protection, and diagnostic features, making it ideal for demanding automotive and industrial power control applications.

Keywords:

High-Side Switch, Automotive Applications, Over-Current Protection, Diagnostic Feedback, Load Management