Infineon BTS723: 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 BTS723 stands out as a premier high-current PROFET™ (Protected FET) smart high-side switch, engineered specifically for the rigorous demands of modern vehicles.

This device integrates two low-ohmic N-channel power MOSFETs in a single package, capable of handling continuous currents up to 2 x 11A or a single channel up to 22A. Its primary role is to drive a wide array of automotive loads, including high-power lighting systems (e.g., LED arrays, headlights), DC motors, and heating elements, which are commonplace in body control modules, powertrain systems, and comfort applications.

The "smart" functionality of the BTS723 is what truly sets it apart. It incorporates a comprehensive suite of advanced protective features and diagnostic capabilities. Key protections include protection against overload, short-circuit to ground or battery, and overtemperature. In the event of a fault, the device limits the current and can shut down independently, safeguarding both itself and the connected load. Crucially, it provides detailed diagnostic feedback to the microcontroller, such as current sense proportional to load current, open-load detection (both on and off-state), and fault status reporting. This enables predictive maintenance and swift troubleshooting, which are vital for automotive safety and reliability.

Furthermore, the device is designed for exceptional electrostatic discharge (ESD) protection and features a very low standby current, making it ideal for always-on automotive systems where quiescent current is a critical parameter. Its compact PG-TO-263-7-311 package also offers excellent power dissipation in a small footprint.

ICGOOODFIND: The Infineon BTS723 is a highly integrated, robust, and intelligent solution that provides superior power switching, comprehensive diagnostics, and robust protection. It is an exemplary component for designers building next-generation automotive electronic systems that require high current handling, reliability, and detailed system feedback.

Keywords:

1. PROFET™ Smart High-Side Switch

2. Automotive Applications

3. Diagnostic Capabilities

4. Overcurrent Protection

5. Load Management