Infineon BTT6050-1ERA: A High-Current PROFET™ Smart Switch for Robust Automotive Applications

The increasing complexity of automotive electronic systems demands highly reliable, efficient, and intelligent power management solutions. At the heart of many modern vehicle designs, from body control modules to advanced driver-assistance systems (ADAS), are high-side switches. The Infineon BTT6050-1ERA stands out as a premier solution in this category, representing a significant leap in high-current switching capability and diagnostic intelligence for the most demanding automotive environments.

As part of Infineon's renowned PROFET™ (Protected MOSFET) family, the BTT6050-1ERA is engineered to drive harsh resistive, capacitive, and inductive loads with unparalleled robustness. Its key defining feature is its impressive current handling capacity of up to 70A, making it ideal for controlling power-hungry applications such as PTC heaters, motorized actuators, and solenoid valves. This high-power capability is seamlessly integrated into a compact PG-TO-263-7 package, optimizing board space without compromising performance.

Beyond raw power, the device exemplifies the "smart" in smart switch. It incorporates a comprehensive suite of advanced diagnostic and protection features that are critical for functional safety (ISO 26262) and system reliability. These include:

Load Current Feedback: An analog proportional current sense pin (IS) provides real-time monitoring of the load current, enabling precise control and fault detection.

Overload and Short-Circuit Protection: The device autonomously protects itself and the load by limiting current in case of a fault, reporting the condition back to the microcontroller.

Overtemperature Shutdown: A built-in temperature sensor shuts down the switch if its junction temperature exceeds a safe threshold, restarting automatically once it has cooled.

Overvoltage Protection (including load dump): It is inherently resilient against the voltage transients typical in automotive electrical systems.

Open-Load Detection: It can detect an open-load condition both in on-state and off-state, which is crucial for safety-critical applications.

Designed for robustness in the harsh automotive environment, the BTT6050-1ERA is qualified to AEC-Q100 and capable of handling high inrush currents. Its very low typical on-state resistance (RDS(on)) of just 0.9 mΩ minimizes conduction losses, leading to higher efficiency and reduced thermal stress, which is paramount for always-on systems and energy management.

ICGOO

The Infineon BTT6050-1ERA is a powerhouse of integration, combining exceptional high-current switching, robust protective functions, and detailed diagnostic feedback in a single package. It empowers automotive design engineers to build more reliable, efficient, and intelligent systems, simplifying design while enhancing overall system safety and durability. It is a quintessential component for the next generation of automotive electronics.

Keywords:

1. PROFET™ Smart Switch

2. High-Current (70A)

3. Automotive Applications

4. Advanced Diagnostics

5. Robust Protection