Infineon BTS5480SF: A High-Current PROFET™ Smart High-Side Power Switch for Robust Automotive Applications

The evolution of automotive electronics demands components that deliver not only high performance but also exceptional reliability under harsh conditions. The Infineon BTS5480SF stands out as a premier solution in this domain, representing a state-of-the-art PROFET™ (Protected MOSFET) smart high-side power switch engineered to meet the rigorous requirements of modern vehicle systems.

Designed to control a wide array of resistive or inductive loads, such as heaters, motors, and LEDs, the BTS5480SF integrates a vertical power MOSFET with a comprehensive suite of protection and diagnostic features. Its capability to handle continuous currents up to 6.5 A and even higher peak currents makes it exceptionally suited for high-power applications. A key advantage is its very low standby current, which is critical for minimizing power drain in always-on systems, a common necessity in automotive environments.

What truly defines this device is its robustness and intelligence. It is built to withstand the electrical hazards typical in automobiles, including load dump, overvoltage, reverse battery, and short-circuit conditions. The integrated protection mechanisms actively safeguard both the switch itself and the load it controls. Furthermore, its advanced diagnostic feedback provides real-time status information on output load current, overtemperature, and open-load conditions (both on and off-state), enabling predictive maintenance and enhanced system control.

The device operates seamlessly with microcontrollers via a 3.3 V/5 V compatible logic input, simplifying design-in for modern ECUs (Electronic Control Units). Its efficient switching performance minimizes power losses, contributing to better fuel economy and lower thermal stress. Housed in a TO-252 (DPAK) package, it offers an excellent power-to-size ratio and is designed for automated assembly, ensuring reliability in high-volume manufacturing.

In summary, the Infineon BTS5480SF is a cornerstone technology for designers building the next generation of automotive systems, from body control modules and powertrain systems to advanced driver-assistance systems (ADAS), where durability, diagnostic intelligence, and high-current driving capability are paramount.

ICGOOFind: The Infineon BTS5480SF PROFET™ is an intelligent high-side switch that sets a high benchmark for robustness, diagnostic capability, and power density in automotive designs, making it an optimal choice for demanding high-current applications.

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