Infineon BTS5120-2EKA: 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 BTS5120-2EKA stands out as a premier high-side power switch engineered specifically to meet these stringent requirements. As part of Infineon's renowned PROFET™ (Protected MOSFET) family, this device is designed to control a wide array of high-current loads in the harsh automotive environment, from lighting systems and motors to heaters and solenoids.

A key strength of the BTS5120-2EKA is its impressive high-current handling capability, supporting continuous currents up to 120A. This makes it exceptionally suitable for demanding applications such as electric power steering (EPS) systems, PTC heaters, and engine management modules. Housed in a robust TO-263-7 package, it offers excellent thermal performance, allowing for efficient dissipation of heat generated during operation.

Beyond mere switching, the BTS5120-2EKA is a truly "smart" device, integrating a comprehensive suite of advanced diagnostic and protection features. These include:

Load Current Feedback: Provides an analog output signal proportional to the load current, enabling precise monitoring without external shunts.

Over-Current Protection: Safely limits the output current during a short circuit.

Over-Temperature Protection: Shuts down the device if the junction temperature exceeds safe limits, automatically restarting once it has cooled.

Over-Voltage Protection (including load-dump): Shields the switch and the load from voltage transients common in automotive environments.

Short-Circuit Protection to Ground and Battery: Ensures system integrity under fault conditions.

Open-Load Detection: Identifies disconnected loads both in on and off states.

This level of intelligence enables predictive maintenance and enhances overall system safety and reliability. Furthermore, its very low standby current and compatibility with microcontrollers make it ideal for modern, energy-conscious vehicle architectures.

ICGOODFIND: The Infineon BTS5120-2EKA PROFET™ is a high-performance smart switch that exemplifies power density and intelligence. It provides a robust, all-in-one solution for controlling high-current loads, significantly simplifying design-in while offering critical diagnostic feedback for state-of-health monitoring. Its extensive built-in protection ensures maximum reliability in the challenging conditions of automotive applications, making it a top-tier choice for next-generation vehicle systems.

Keywords:

1. PROFET™ Smart Switch

2. High-Current (120A)

3. Automotive Applications

4. Diagnostic Features

5. Load-Dump Protection