Infineon BTS781GP: High-Current PROFET™ Smart High-Side Switch for Automotive Applications

The increasing complexity of automotive electrical systems demands robust, intelligent, and highly reliable switching solutions. Addressing this need, the Infineon BTS781GP stands out as a high-current PROFET™ (Protected FET) smart high-side switch engineered specifically for the rigorous demands of modern vehicles. This device integrates advanced protection, diagnostic features, and control functions into a single package, providing a compact and efficient solution for driving heavy loads.

A key strength of the BTS781GP is its impressive current handling capability, supporting loads up to 75A. This makes it ideally suited for a wide range of high-power automotive applications, including but not limited to electric power steering (EPS) systems, transmission control units, and advanced driver-assistance systems (ADAS). By integrating two channels in a single package, it offers design flexibility for controlling multiple loads or for parallel operation to achieve even higher current capacity, all while minimizing the PCB footprint.

Beyond raw power, the "smart" functionality is what truly defines this component. It incorporates a comprehensive suite of embedded protection features that safeguard both the switch itself and the load it controls. These include protection against overload, short-circuit, over-temperature, and over-voltage conditions. Furthermore, its advanced diagnostic capabilities provide critical feedback to the microcontroller, reporting on load current (via a proportional current sense pin), open-load conditions, and overtemperature warnings. This enables predictive maintenance and enhances overall system safety and reliability.

Designed for the challenging automotive environment, the BTS781GP operates reliably over a wide temperature range and is resistant to transients like load-dump and reverse battery voltages. Its low standby current is a crucial advantage for today's vehicles, where minimizing quiescent power consumption is essential for meeting low-leakage requirements and preventing battery drain.

ICGOOODFIND: The Infineon BTS781GP is a premier solution for automotive designers seeking to combine high power, intelligent control, and robust protection in a single device. Its high-current dual-channel design, extensive diagnostic suite, and resilience against harsh electrical conditions make it an exceptional choice for next-generation automotive power management systems.

Keywords:

PROFET™ Smart High-Side Switch

High-Current (75A)

Automotive Applications

Embedded Protection Features

Advanced Diagnostics