Infineon BSP742R Smart High-Side Power Switch: Features and Applications
The Infineon BSP742R is a highly integrated smart high-side power switch designed to deliver robust and efficient load control in a wide range of automotive and industrial applications. As part of Infineon's PROFET™ (Protected MOSFET) family, this device combines a power MOSFET with advanced protection and diagnostic features, making it an ideal solution for driving resistive, capacitive, and inductive loads.
Key Features
Built on state-of-the-art SMPS technology, the BSP742R offers a continuous current capability of up to 0.7A from a 4.5V to 28V supply range. Its core strength lies in its comprehensive suite of integrated protection functions. These include overload protection, short-circuit protection, and over-temperature shutdown, which safeguard both the switch and the connected load from damage under fault conditions. Furthermore, its reverse battery protection (up to -18V) and over-voltage clamp (up to 38V) ensure reliable operation in the harsh electrical environments typical of automotive systems.
A standout feature is its sophisticated diagnostic feedback capability. The status pin provides valuable information on the operating state, such as normal operation, open load, overtemperature, or short-circuit to ground. This enables microcontroller-based systems to implement predictive maintenance and fault handling strategies, enhancing overall system safety and reliability. The device also features very low quiescent current in standby mode, which is critical for modern applications with strict energy efficiency requirements, especially in battery-powered systems.
Primary Applications
The BSP742R is engineered to meet the stringent demands of the automotive industry, conforming to the AEC-Q100 standard. Its primary applications include:
Automotive Body Electronics: Driving various loads such as LED lighting modules (interior, exterior, and courtesy lights), small motors (e.g., for HVAC damper control), and solenoids.
Industrial Automation: Controlling actuators, valves, and small relays in PLCs (Programmable Logic Controllers) and distributed I/O modules.
Heating Elements: Managing low-power resistive heaters in comfort and diagnostic systems.
Power Distribution Units: Serving as a reliable and intelligent switch in centralized power distribution boxes.
Its ability to interface directly with a microcontroller via a 3.3V/5V logic input simplifies circuit design, reduces component count, and saves valuable board space.
The Infineon BSP742R stands out as a highly reliable and intelligent solution for precise load management. Its blend of robust integration, extensive protective features, and precise diagnostic feedback makes it an excellent choice for designers seeking to improve the efficiency, safety, and intelligence of their 12V or 24V DC systems.
Keywords:
1. Smart High-Side Switch
2. Integrated Protection
3. Diagnostic Feedback
4. Automotive Applications
5. Load Management
