BTS50452EKAXUMA1: High-Current PROFET™ Power Switch for Automotive Applications

The increasing complexity of automotive electrical systems demands robust, intelligent, and highly reliable components for power distribution and management. The BTS50452EKAXUMA1, a member of Infineon's PROFET™ (Protected MOSFET) family, stands out as a premier high-current power switch engineered specifically to meet the stringent requirements of modern vehicles. This device integrates a vertical N-channel power MOSFET with comprehensive protection and diagnostic features into a single, compact package, offering a streamlined solution for driving high-current loads.

A key strength of the BTS50452EKAXUMA1 is its high continuous current capability of up to 35A. This makes it ideally suited for demanding automotive loads such as heating elements, motors, and power seats. It is designed to control 12V automotive ground-connected loads through a simple microcontroller-compatible input pin, significantly simplifying the design process for engineers.

Beyond its switching capability, the device is distinguished by its extensive suite of integrated protection and diagnostic functions. These features are critical for ensuring system safety and reliability in the harsh automotive environment. Key integrated protections include:

Overload and Short-Circuit Protection: Safely limits current to protect the switch and the load during fault conditions.

Overvoltage Protection: Guards against damage from load dump and other voltage transients.

Overtemperature Protection: Shuts down the device in case of excessive junction temperature, restarting automatically once it has cooled.

Reverse Battery Protection: Withstands negative voltage at the battery terminal without requiring an external series diode.

The PROFET™ also provides advanced diagnostic feedback to the microcontroller, including status on open-load conditions, short-to-ground, and overtemperature warnings. This enables predictive maintenance and enhances system-level diagnostics.

Housed in a thermally enhanced, surface-mountable TO-263-7 package, the BTS50452EKAXUMA1 offers excellent power dissipation. Its very low typical on-state resistance (RDS(on)) of 4.5 mΩ minimizes conduction losses, leading to higher efficiency and reduced thermal stress, which is paramount in energy-conscious and space-constrained automotive applications.

ICGOOODFIND: The BTS50452EKAXUMA1 PROFET™ is an all-in-one intelligent high-side switch that delivers exceptional power handling, robust integrated protection, and precise diagnostic capabilities. It dramatically reduces system complexity and board space while enhancing the reliability and intelligence of automotive power systems, from body control modules to advanced driver-assistance systems (ADAS).

Keywords:

1. PROFET™ Power Switch

2. High-Current (35A)

3. Integrated Protection

4. Diagnostic Feedback

5. Automotive-Grade