Infineon BTS5020-2EKA: High-Current PROFET™ Smart Switch for Automotive Applications

The increasing complexity of modern automotive systems demands robust, intelligent, and highly reliable components for power management. The Infineon BTS5020-2EKA stands out as a premier solution in this domain. This device is a high-current PROFET™ (Protected MOSFET) smart switch engineered specifically for the rigorous demands of automotive applications, such as driving resistive, capacitive, and inductive loads in safety-critical systems.

At its core, the BTS5020-2EKA is a two-channel high-side switch integrated into a single, compact PG-TO-263-7 package. Each channel can handle a continuous current of up to 20 A, making it exceptionally capable of driving high-power loads like heaters, motors, or LEDs directly. A key feature is its extremely low typical on-state resistance (RDS(on)) of just 7 mΩ per channel. This high efficiency minimizes power dissipation as heat, a critical factor for reliability in the high-temperature environments under the hood.

Beyond its switching capability, the "smart" in PROFET™ signifies a high level of integrated protection and diagnostic functions. The device is designed to be inherently robust against harsh automotive electrical conditions, featuring:

Overload and Short-Circuit Protection: It automatically limits the output current to protect itself and the load.

Overtemperature Shutdown: The chip is monitored and shut down in case of excessive junction temperature, with automatic restart upon cooling.

Overvoltage Protection (including load-dump): It can handle voltage transients typical in 12V automotive systems.

Ground Loss and Reverse Battery Protection: The switch remains protected even if the battery connections are compromised.

Advanced Diagnostic Feedback: It provides a proportional current sense (IS) signal for accurate load current monitoring and flags open-load conditions, short-to-ground, and overtemperature warnings via a dedicated status pin.

These features make the BTS5020-2EKA an ideal choice for body control modules (BCMs), seat and window control units, and other systems where diagnostics and functional safety (supporting ISO 26262) are paramount. It simplifies design, reduces component count, and enhances the overall reliability of the electronic control unit (ECU).

ICGOO

D FIND Summary: The Infineon BTS5020-2EKA PROFET™ is a highly integrated, dual-channel smart high-side switch that delivers exceptional power handling, comprehensive embedded protection, and precise diagnostic capabilities, making it a cornerstone component for designing efficient and fail-safe automotive power systems.

Keywords:

1. PROFET™ Smart Switch

2. High-Current (20A)

3. Automotive Applications

4. Diagnostic Feedback

5. Overload Protection