Infineon BTS70081EPPXUMA1: High-Current PROFET™ Smart Switch for Automotive and Industrial Applications

The demand for robust and intelligent power management solutions continues to grow in automotive and industrial systems. Addressing this need, Infineon Technologies introduces the BTS70081EPPXUMA1, a state-of-the-art high-current PROFET™ (Protected MOSFET) smart switch. This device is engineered to deliver superior performance, diagnostic capabilities, and protection in demanding 12 V and 24 V DC applications.

At its core, the BTS70081EPPXUMA1 is a single-channel high-side power switch integrated into a compact PG-TO263-7 package. It boasts an impressive continuous current rating of up to 45 A, making it ideal for controlling heavy loads such as motors, heaters, and power circuits. A key feature is its extremely low typical on-state resistance (RDS(on)) of just 0.8 mΩ. This high efficiency minimizes power losses and heat generation, which is critical for improving system reliability and thermal management.

The "smart" in PROFET™ is defined by its comprehensive suite of integrated protection and diagnostic functions. The device is designed to be inherently robust, featuring:

Overload and short-circuit protection with active current limiting.

Overvoltage protection, including load-dump resilience.

Overtemperature protection with precise shutdown and restart mechanisms.

Reverse battery protection down to -40 V, safeguarding the system from incorrect power supply connections.

Diagnostic feedback is provided through a current sense (IS) pin that delivers a proportional current mirror signal. This allows the microcontroller to monitor the load status continuously, enabling the detection of open-load conditions, overtemperature warnings, and short-circuit events, which is vital for predictive maintenance and functional safety.

The BTS70081EPPXUMA1 is AEC-Q100 qualified, ensuring it meets the stringent reliability standards required for automotive electronics. Its applications are vast, ranging from automotive body electronics (e.g., seat heaters, window lifters, sunroof controls) to industrial automation systems (e.g., PLC outputs, solenoid and valve control).

ICGOODFIND: The Infineon BTS70081EPPXUMA1 PROFET™ smart switch stands out as a highly integrated and reliable solution for high-current switching. Its exceptional combination of low RDS(on), high current handling, and advanced diagnostic capabilities makes it a superior choice for designers aiming to enhance system efficiency, safety, and intelligence in harsh automotive and industrial environments.

Keywords: High-Current Switch, PROFET™, Automotive Grade, Diagnostic Features, Load Protection.