Infineon BTS50055-1TMA Smart High-Side Power Switch, 130A, TO-220-7

The Infineon BTS50055-1TMA is a sophisticated N-channel high-side vertical power FET switch, engineered using advanced SIPMOS® chip-on-chip technology. It integrates a charge pump, a current-controlled input, and diagnostic feedback with load current sense into a single, robust TO-220-7 package. This smart power switch is designed to provide reliable, protected switching for demanding automotive and industrial applications, offering superior performance and embedded safety features.

A core strength of this device is its comprehensive suite of embedded protective functions. It features overload protection, current limitation, and short-circuit protection to safeguard both the switch and the load. Additional protections include over-temperature and over-voltage shutdown, a clamp for negative voltage at the output, and electrostatic discharge (ESD) protection. It also supports fast de-energising of inductive loads and includes loss of VBB protection for enhanced system reliability.

The switch delivers exceptional power handling capabilities, including a high load current capability, high inrush current tolerance, and high energy capability. Its low on-state resistance (6000 µΩ) ensures efficient operation with minimal power loss. The integrated diagnostic feedback via the current sense pin enables open-load detection and real-time monitoring of the load status, which is critical for advanced control systems.

Primary Applications

This component is ideally suited for a wide range of automotive and power management systems. Key application areas include automotive body control modules, lighting systems (such as LED drivers), power distribution units, and HVAC (Heating, Ventilation, and Air Conditioning) controls. Its AEC-Q100 qualification confirms its suitability for the rigorous environmental demands of the automotive industry.

With its combination of smart features, robust protection, and high current-handl