Infineon BTS50055-1TMA: High-Current Smart Switch for Automotive and Industrial Applications

The demand for robust, intelligent power management solutions continues to grow across the automotive and industrial sectors. Addressing this need, Infineon Technologies introduces the BTS50055-1TMA, a high-performance, profoundly reliable smart high-side power switch. This device is engineered to deliver superior performance in controlling heavy loads with utmost precision and protection.

At its core, the BTS50055-1TMA is designed to handle high-current loads up to 55A, making it an ideal solution for demanding applications such as automotive body electronics (e.g., seat heaters, window lifters, and fuel pumps) and industrial automation systems (e.g., solenoid valves, motor controllers, and power distribution units). Its integration of a single-channel switch with protective and diagnostic features into one package simplifies design-in, reduces board space, and enhances overall system reliability.

A key strength of this device lies in its advanced diagnostic and protection capabilities. It offers comprehensive protection features including over-load protection, short-circuit protection, over-voltage clamp, and over-temperature shutdown. These safeguards ensure operational integrity under harsh conditions, preventing damage to both the switch and the connected load. Furthermore, its diagnostic feedback through a proportional current sense (IS) pin allows for real-time load current monitoring and fault detection, enabling predictive maintenance and enhanced system control.

The component is built using Infineon’s proven SMART7 technology, which provides exceptionally low standby current and high energy efficiency. Its very low typical on-state resistance (RDS(on)) minimizes conduction losses, leading to reduced heat generation and improved thermal performance. The TMA package (TO-252-5) offers an efficient thermal path, ensuring stable operation even under high ambient temperatures.

In summary, the Infineon BTS50055-1TMA stands out as a versatile and robust solution for designers seeking to optimize power switching in severe environments. Its combination of high current handling, integrated protection, and accurate diagnostics makes it a cornerstone for modern automotive and industrial power systems.

ICGOOODFIND: The Infineon BTS50055-1TMA is a top-tier smart high-side switch that excels in performance, integration, and robustness, making it an excellent choice for high-current switching tasks where reliability is non-negotiable.

Keywords: High-Current Switch, Automotive Applications, Diagnostic Features, Over-Temperature Protection, SMART7 Technology.