Infineon BTS50050-1EGAAUMA1: High-Current PROFET™ Smart Switch for Demanding Automotive Applications

The increasing complexity of automotive electronic systems demands robust, intelligent, and highly reliable power switching solutions. The Infineon BTS50050-1EGAAUMA1 stands out as a premier high-current PROFET™ (PROtected FET) smart switch engineered specifically to meet these stringent requirements. This device is designed to drive a wide range of resistive, inductive, and capacitive loads, such as heaters, motors, and LEDs, making it a versatile cornerstone for body electronics, power management, and advanced driver-assistance systems (ADAS).

At its core, the BTS50050-1EGAAUMA1 integrates a vertical N-channel power MOSFET with a low typical on-state resistance (R_DS(on)) of just 0.5 mΩ. This exceptionally low resistance is critical for minimizing conduction losses and thermal dissipation, enabling the handling of continuous currents up to 50 A with high efficiency. Such performance is vital for power-hungry applications where energy efficiency and thermal management are paramount.

Beyond its raw switching power, the "smart" features of this PROFET™ device provide a comprehensive suite of diagnostic and protection functions. It offers precise load current feedback via an analog proportional current sense (IS) pin, allowing the microcontroller to monitor system status in real-time. Furthermore, it is equipped with advanced built-in protections including overload and short-circuit protection, over-temperature shutdown, and over-voltage clamp. These features safeguard both the switch itself and the connected load from damage due to fault conditions, significantly enhancing system reliability and safety.

The device also incorporates crucial automotive-grade qualifications, ensuring operation under the harsh conditions typical of vehicular environments. It is designed to withstand load-dump pulses and negative voltage transients on the supply line, making it exceptionally robust against electrical stressors common in 12V automotive systems. Its green, leadless PG-TO-263-7 (DPAK-7) package offers both excellent power dissipation and a small footprint.

ICGOOODFIND: The Infineon BTS50050-1EGAAUMA1 is an optimal solution for designers seeking a highly integrated, protected, and efficient high-side switch. Its combination of very low R_DS(on), high current capability, extensive diagnostic features, and robust automotive durability makes it an excellent choice for simplifying design and improving reliability in next-generation automotive power systems.

Keywords: PROFET™ Smart Switch, High-Current Switch, Automotive-Grade, Diagnostic and Protection, Low R_DS(on).