Infineon BTS621L1E3128A: High-Side Smart Switch for Automotive and Industrial Applications

The Infineon BTS621L1E3128A is a high-side power switch designed to meet the rigorous demands of both automotive and industrial applications. As part of Infineon’s proven Smart High-Side Switch family, this device integrates advanced protection, diagnostics, and control features into a compact and efficient package. It is engineered to drive resistive, capacitive, and inductive loads with high reliability, making it suitable for a wide range of systems including automotive body control modules, industrial automation, and power distribution units.

One of the standout features of the BTS621L1E3128A is its robust integration of protection functions. The device includes built-in safeguards such as overload protection, short-circuit protection, over-temperature protection, and over-voltage clamp. These features ensure operational safety and significantly enhance system durability, even under harsh electrical or environmental conditions. Additionally, the switch offers diagnostic feedback including load current sense, supply voltage monitoring, and status indication, which supports predictive maintenance and system diagnostics.

The device operates with a wide supply voltage range from 5.5 V to 40 V, accommodating typical automotive and industrial voltage levels, including load-dump scenarios. Its efficient design minimizes power dissipation, thanks to low on-state resistance, which also helps reduce heat generation and improves energy efficiency. With a continuous current capability of up to 1.8 A, the BTS621L1E3128A can handle substantial loads while maintaining stable performance.

Control is simplified through a logic-level input compatible with microcontrollers, allowing easy integration into digital systems. The switch also features low electromagnetic interference (EMI), which is critical for automotive electronics compliance. Its green product qualification and AEC-Q100 compliance further underline its suitability for automotive applications.

ICGOOODFIND:

The Infineon BTS621L1E3128A is a highly integrated, protected, and diagnostic-rich high-side switch that delivers reliability and performance for demanding automotive and industrial systems.

Keywords:

High-Side Switch, Automotive Applications, Overload Protection, Diagnostic Feedback, AEC-Q100 Compliant