Infineon BTS282Z: High-Side Power Switch with Integrated Protection Features

In the realm of automotive, industrial, and consumer electronics, robust and intelligent power management is paramount. The Infineon BTS282Z stands out as a premier high-side power switch, engineered to deliver superior performance while integrating a comprehensive suite of protection features directly on-chip. This device exemplifies the move towards smarter, more reliable, and space-efficient power switching solutions.

As a high-side switch, the BTS282Z is designed to control the power supply rail connected to a load. This configuration is particularly advantageous in applications where short-circuit protection is critical, as it inherently prevents ground potential shifts. The core of the device is built using Infineon's proprietary Smart SIPMOS technology, which enables efficient switching of high currents with very low static and dynamic losses.

The true strength of the BTS282Z lies in its integrated protection features, which significantly enhance system reliability and reduce the need for external components. These include:

Overload and Short-Circuit Protection: The device actively monitors the current flow and shuts down instantly upon detecting a fault condition, safeguarding both the switch and the connected load.

Overtemperature Protection: An internal thermal shutdown mechanism disables the output if the junction temperature exceeds a safe threshold, preventing thermal runaway.

Overvoltage Protection (including load dump): Clamping structures protect the switch from voltage transients common in harsh environments like automotive electrical systems.

ESD Protection: High electrostatic discharge protection ensures resilience during handling and operation.

Undervoltage Shutdown: This feature ensures the device operates correctly only when the supply voltage is within a specified range, preventing malfunction.

Furthermore, the BTS282Z provides diagnostic feedback to the microcontroller via a status output pin. This open-drain output signals fault conditions such as overtemperature or short-circuit, enabling sophisticated system monitoring and predictive maintenance strategies.

Housed in a compact TO-263 (D2PAK) package, the BTS282Z offers excellent thermal performance, allowing it to handle high continuous and peak currents in a minimal footprint. Its combination of power handling, intelligence, and robustness makes it an ideal choice for driving resistive or inductive loads such as heaters, motors, solenoids, and lamps.

ICGOOODFIND: The Infineon BTS282Z is a highly integrated and robust high-side power switch that consolidates control, power switching, and multiple critical protection mechanisms into a single device. It dramatically simplifies design-in, reduces board space, and enhances the overall durability and intelligence of power distribution systems, making it a top-tier component for demanding applications.

Keywords: High-Side Switch, Integrated Protection, Smart SIPMOS, Diagnostic Feedback, Load Dump Protection.