Infineon BTS5482SFXUMA2: High-Side Power Switch with Diagnostic and Protection Features

The Infineon BTS5482SFXUMA2 is a state-of-the-art smart high-side power switch engineered for robust performance in demanding automotive and industrial applications. Integrating a vertical power MOSFET with advanced CMOS control circuitry into a single package, this device delivers efficient and reliable switching for loads up to several amperes while providing comprehensive diagnostic feedback and multiple layers of protection.

A key strength of the BTS5482SFXUMA2 lies in its integrated diagnostic and protection features, which are critical for enhancing system reliability and simplifying design. The device offers precise current sense feedback, providing a proportional current (IS) output that allows the microcontroller to monitor the load current continuously. This is invaluable for detecting conditions such as short circuits, overloads, and even open-load scenarios. Furthermore, the chip incorporates a wide range of protective functions, including overload protection (ILIM), active in-rush current management, and overtemperature shutdown (TSD). These features proactively safeguard both the switch and the connected load from potential damage caused by electrical faults or harsh operating environments.

The device is designed for low standby current and high energy efficiency, making it particularly suitable for automotive body electronics and powertrain systems where power consumption is a key concern. Its ability to handle high in-rush currents, such as those generated by lamp filaments or capacitive loads, ensures stable operation during turn-on. Packaged in a space-saving PG-SSO-14 clip-bonded package, it also offers excellent thermal performance, efficiently dissipating heat to maintain operational stability.

ICGOOODFIND: The Infineon BTS5482SFXUMA2 stands out as a highly integrated and intelligent solution for power distribution. Its combination of a robust switching element, precise diagnostic capabilities, and a comprehensive suite of protection mechanisms makes it an ideal choice for designers building next-generation systems that demand reliability, efficiency, and detailed system feedback.

Keywords: Smart High-Side Switch, Diagnostic Feedback, Overload Protection, Automotive Grade, Current Sense