Infineon BTS50055-1TMC: A High-Performance Smart High-Side Power Switch

In the realm of automotive, industrial, and consumer electronics, efficient and robust power management is paramount. The Infineon BTS50055-1TMC stands out as a premier solution, engineered to meet the demanding requirements of modern high-current switching applications. This smart high-side power switch integrates advanced protective features and diagnostic capabilities into a single, compact package, offering designers a blend of high performance, exceptional reliability, and simplified system design.

At its core, the BTS50055-1TMC is designed to handle continuous load currents up to 55A, making it ideal for driving heavy loads such as motors, heaters, and power circuits. Its low typical on-state resistance (RDS(on) of just 0.55 mΩ) is a key contributor to its efficiency, minimizing power losses and reducing heat generation. This characteristic is vital for improving overall system energy efficiency and thermal management, allowing for operation in harsh environments without requiring excessive cooling.

A defining feature of this device is its integrated smart protection and diagnostic suite. It provides comprehensive safeguards against overload conditions, short circuits, overtemperature, and overvoltage scenarios. The built-in diagnosis pin offers real-time feedback on operational status, including load current sense and fault indications, enabling predictive maintenance and enhanced system safety. This intelligence allows microcontrollers to monitor the switch’s health proactively, preventing catastrophic failures and improving system uptime.

Housed in a TO-LL package optimized for superior thermal performance, the BTS50055-1TMC ensures efficient heat dissipation directly from the chip to the PCB. This robust construction, coupled with AEC-Q100 qualification for automotive applications, guarantees operation under the most strenuous conditions, including wide temperature ranges and significant electrical stress. Its compatibility with 24V systems and logic-level inputs further enhances its versatility across various platforms.

ICGOOODFIND: The Infineon BTS50055-1TMC exemplifies the evolution of power switches, combining high-current handling with intelligent features to deliver a robust, efficient, and diagnostic-rich solution for next-generation electronic systems.

Keywords:

Smart High-Side Switch

High Current Switching

Integrated Diagnostics

Low RDS(on)

AEC-Q100 Qualified