Infineon BTS50085-1TMB: High-Current Smart Switch for Automotive and Industrial Applications

Modern automotive and industrial systems demand robust, intelligent power management solutions capable of operating reliably under harsh conditions. The Infineon BTS50085-1TMB stands out as a high-current PROFET™ (Protected MOSFET) smart switch engineered to meet these stringent requirements. Combining advanced protection features, diagnostic capabilities, and high power density in a compact package, this device is optimized for controlling heavy resistive or inductive loads with precision and safety.

At its core, the BTS50085-1TMB integrates a vertical N-channel power MOSFET with a continuous current rating of up to 35A, making it suitable for applications such as heating elements, motor control systems, and power distribution units. Its low typical on-state resistance (R_DS(on) of just 0.85 mΩ minimizes power losses and improves overall system efficiency, reducing the need for complex cooling mechanisms.

A key strength of this smart switch is its comprehensive suite of integrated protection and diagnostic functions. These include overload protection, short-circuit clamping, overtemperature shutdown, and overvoltage protection (including load dump resilience). The device also provides detailed feedback via a proportional current sense pin (IS), enabling real-time load current monitoring and fault detection—critical for functional safety standards like ISO 26262 in automotive contexts.

Housed in a TO-263-7 package, the BTS50085-1TMB offers excellent thermal performance and ease of mounting. Its automotive-grade qualification (AEC-Q100) ensures reliability in 12V and 24V battery systems, while its robustness also makes it ideal for industrial automation, power supplies, and heavy-duty solenoid control.

ICGOOODFIND

The Infineon BTS50085-1TMB exemplifies innovation in power switching, delivering high current handling, intelligent diagnostics, and superior reliability for demanding automotive and industrial environments.

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Keywords:

PROFET™ Smart Switch, High-Current Handling, Integrated Protection, Diagnostic Feedback, Automotive-Grade Reliability