Infineon BTS118D Smart High-Side Power Switch: Features and Application Overview

The Infineon BTS118D is a versatile and highly integrated smart high-side power switch designed for a wide range of automotive and industrial applications. As part of Infineon’s PROFET™ (Protected MOSFET) family, this device combines power control, protection, and diagnostic capabilities in a single compact package, making it an ideal solution for driving resistive or inductive loads.

One of the standout features of the BTS118D is its integrated protection functionality. The device includes safeguards against overload, short-circuit, over-temperature, and over-voltage conditions, significantly enhancing system reliability. Its diagnostic feedback feature allows for real-time monitoring of the load status, providing essential information such as open-load detection and fault reporting to the microcontroller.

The BTS118D operates with a supply voltage of up to 40V and can deliver a continuous output current of up to 0.7A, making it suitable for applications like small motors, solenoids, bulbs, or LEDs. Its low standby current and efficient switching performance help reduce overall power consumption, which is especially critical in battery-powered systems.

Thanks to its CMOS-compatible input, the device can be directly interfaced with microcontrollers, simplifying circuit design. The built-in charge pump ensures efficient driving of the internal MOSFET, enabling low on-state resistance and minimal heat generation.

Typical applications include:

- Automotive body electronics (e.g., mirror adjustment, seat control)

- Industrial automation systems

- HVAC controls

- Power distribution units

ICGOOODFIND:

The Infineon BTS118D stands out as a robust and intelligent power switch, offering a blend of performance, diagnostic insight, and comprehensive protection. Its versatility makes it a top choice for designers seeking to improve system efficiency and reliability in demanding environments.

Keywords:

Smart High-Side Switch, Over-Current Protection, Diagnostic Feedback, Automotive Applications, PROFET™