Infineon BTS141BKSA1 High-Side Power Switch: Features, Applications, and Technical Overview
The Infineon BTS141BKSA1 is a robust and highly integrated high-side power switch designed for a wide range of automotive and industrial applications. As part of Infineon's proven PROFET™ (Protected MOSFET) family, this device combines a vertical power MOSFET with sophisticated smart protection and diagnostic features into a single package. It is engineered to control resistive, inductive, and capacitive loads with exceptional reliability, making it a cornerstone component for modern electronic power management.
Key Features
The BTS141BKSA1 stands out due to its comprehensive set of features designed for safety, durability, and ease of use.
Overload and Short-Circuit Protection: The device features advanced current limiting that protects both the switch and the connected load in the event of a fault condition, such as a short circuit or excessive current draw.
Overtemperature Protection: An integrated temperature sensor shuts down the power stage if the junction temperature exceeds a critical threshold, preventing thermal damage. It automatically restarts once the device has cooled down.
Overvoltage Protection (Clamping): The built-in active clamp handles inductive load turn-off by safely dissipating energy, protecting the switch from voltage spikes that could otherwise cause destruction.
Diagnostic Feedback: A crucial feature is its diagnostic output pin, which provides valuable status information to the microcontroller. This includes indications of open-load (both on and off-state), overtemperature pre-warning, and short-circuit conditions, enabling predictive maintenance and system monitoring.
Very Low Standby Current: It consumes minimal current when in the off state, which is a critical parameter for battery-powered applications, especially in automotive systems where quiescent current directly impacts fuel consumption or battery life.
Green Product (RoHS Compliant): The device is manufactured to be lead-free and compliant with environmental directives.
Primary Applications
The robust design and protective features of the BTS141BKSA1 make it ideal for demanding environments:
Automotive Power Management: Primarily used for driving various automotive loads, including actuators, motors, heaters, and lamps. It is commonly found in body control modules (BCMs) for controlling power windows, sunroofs, seat heaters, and interior lighting.
Industrial Automation: Suitable for controlling solenoids, valves, small DC motors, and other industrial peripherals where reliable switching and diagnostic feedback are required.
Replacement for Relays and Fuses: It offers a solid-state, wear-free alternative to electromechanical relays with the added benefits of diagnostic capabilities and precise electronic control.
Technical Overview
The BTS141BKSA1 is housed in a TO-263-7 (D2PAK) surface-mount package, which offers an excellent thermal performance-to-footprint ratio. Its key technical specifications include:
Output Configuration: High-side switch.
Output Type: N-Channel.
Load Voltage: Up to 40 V, making it suitable for standard 12V and 24V automotive systems.
Continuous Output Current: Up to 17 A, providing ample power for most medium-current applications.
On-State Resistance (RDS(on)): Typically 25 mΩ, which ensures low conduction losses and high efficiency, minimizing heat generation.
Control Interface: Voltage-controlled input compatible with 3.3V and 5V microcontrollers, featuring very low input current requirements.
ICGOOODFIND
The Infineon BTS141BKSA1 is a highly reliable and intelligent high-side power switch that simplifies design and enhances system robustness. Its integration of a power FET, comprehensive protection circuits, and detailed diagnostic feedback into a single package reduces component count, saves board space, and accelerates development time. For engineers designing systems for the automotive and industrial sectors, the BTS141BKSA1 represents an optimal solution for efficient and protected power switching.
Keywords:
1. High-Side Switch
2. Protected MOSFET (PROFET)
3. Automotive Power Management
4. Diagnostic Feedback
5. Overcurrent Protection
