Infineon BTS50202EKA: A High-Current PROFET™ Smart Switch for Automotive Applications

The increasing complexity of automotive electrical systems demands robust, intelligent, and highly reliable switching solutions. The Infineon BTS50202EKA stands out as a premier high-current PROFET™ (Protected MOSFET) smart switch, engineered specifically to meet the stringent requirements of modern vehicle applications. This device integrates a vertical power MOSFET with comprehensive protection and diagnostic features into a single, compact package, offering a powerful solution for driving resistive or inductive loads.

Key Features and Capabilities

At its core, the BTS50202EKA is designed to handle high-current loads up to 23A continuously, making it ideal for demanding automotive actuators such as heater units, power seats, window lifters, and sunroof motors. Its low typical on-state resistance (RDS(on)) of just 2.7 mΩ minimizes power dissipation and reduces heat generation, leading to higher system efficiency and reliability.

A defining characteristic of this PROFET™ device is its integrated smart protection and diagnostic suite. It provides robust safeguards against:

Overload and Short-Circuit Currents: The device automatically limits the output current in fault conditions, protecting both the switch and the load.

Overtemperature: An internal temperature sensor shuts down the power stage if the junction temperature exceeds a safe threshold, restarting automatically upon cooling.

Overvoltage and Reverse Battery: The chip can withstand negative voltages on the supply line, a common hazard in automotive environments.

Electrostatic Discharge (ESD): It offers high ESD protection, enhancing durability during handling and operation.

Diagnostic functionality is communicated via a current-sense (IS) pin that delivers a proportional current mirror output. This allows the microcontroller to monitor the load status continuously, detecting open-load conditions, short circuits to ground or battery, and overtemperature pre-warning, which is crucial for predictive maintenance and functional safety.

Designed for the Automotive Environment

The BTS50202EKA is AEC-Q100 qualified, ensuring it meets the rigorous quality and reliability standards for automotive components. Housed in a TO-263-7 (D2PAK) package with a removable tab, it offers excellent thermal performance for efficient heat dissipation from the PCB. Its very low current consumption in standby mode is a critical advantage for always-on systems, helping to prevent battery drain in vehicles.

ICGOOODFIND

The Infineon BTS50202EKA PROFET™ smart switch is an exceptional solution for high-current automotive body and comfort modules. Its seamless integration of a high-power switch, advanced protection mechanisms, and precise diagnostic feedback in a single package simplifies design, enhances system resilience, and contributes to the development of safer, more efficient, and more intelligent vehicles.

Keywords:

1. PROFET™ Smart Switch

2. High-Current Automotive

3. Integrated Protection

4. Diagnostic Feedback

5. AEC-Q100 Qualified