Infineon BTS3205G: High-Side Power Switch with Diagnostic and Protection Features

The Infineon BTS3205G is a state-of-the-art high-side power switch engineered for robust and intelligent power management in demanding automotive and industrial applications. This device integrates a vertical power MOSFET with advanced CMOS control circuitry on a single chip, enabling efficient control of resistive or inductive loads with a nominal operating voltage of 24 V and a continuous current capability of up to 1.8 A.

A core strength of the BTS3205G lies in its comprehensive suite of integrated protection and diagnostic features, which significantly enhance system reliability and simplify design. Key protective functions include protection against overloads and short-circuits, which safeguards both the switch and the connected load from damage. The device also features overtemperature protection with a precise shutdown mechanism that automatically restarts once the chip cools down. Furthermore, it offers overvoltage protection (including load-dump resilience) and reverse battery protection, which is crucial for the harsh electrical environments found in automotive systems.

The diagnostic capabilities are equally impressive. The switch provides a current sense (IS) pin that delivers a proportional current output, allowing the microcontroller to monitor the load current accurately for fault detection and system feedback. It also features an open-drain status output (SO) pin that provides real-time fault signaling for conditions like overtemperature, short-circuit, and open-load detection (in off-state), enabling proactive system maintenance and debugging.

Housed in a compact and robust PG-TSDSO-14 package, the BTS3205G is designed for high power density and excellent thermal performance. Its combination of low standby current and high electromagnetic compatibility (EMC) makes it an ideal solution for driving a wide array of loads, including solenoids, valves, motors, and lamps.

ICGOODFIND: The Infineon BTS3205G stands out as a highly integrated and reliable solution, offering designers a perfect blend of robust power switching, advanced diagnostic feedback, and multi-layered protection mechanisms for creating safer and more intelligent systems.

Keywords: High-Side Switch, Diagnostic Features, Overcurrent Protection, Reverse Battery Protection, Load Dump Resilience.