Infineon BSP772T: High-Side Power Switch for Advanced Automotive and Industrial Applications
The demand for robust, efficient, and intelligent power switching solutions continues to grow across the automotive and industrial sectors. Addressing this need, the Infineon BSP772T stands out as a highly integrated high-side power switch engineered to deliver superior performance, diagnostic capabilities, and system protection. This device is specifically designed to meet the stringent requirements of modern applications, from body control modules and powertrain systems to factory automation and heavy machinery.
At its core, the BSP772T is a n-channel vertical power MOSFET controlled by a charge pump, allowing it to efficiently switch loads connected to the positive supply rail (high-side). A key advantage of this configuration is the simplification of wiring, as the load is directly grounded, enhancing both safety and design flexibility. The device is capable of driving a wide range of resistive, capacitive, and inductive loads—such as solenoids, valves, motors, and lamps—with a continuous current rating of up to 4.5 A.
One of the most critical aspects of the BSP772T is its comprehensive suite of integrated protection features. These are vital for ensuring system longevity and operational safety in harsh environments. The device includes over-current limitation (OCL), which protects against short circuits and overloads by regulating the output current. Active overtemperature shutdown with automatic restart prevents thermal damage by disabling the switch if the junction temperature exceeds a safe threshold. Furthermore, overvoltage protection (clamp) safeguards the system from voltage transients commonly found in automotive environments, such as load dump pulses. An open-drain status output pin provides real-time diagnostic feedback to the microcontroller, flagging conditions like overtemperature and open-load (in off-state), which is essential for predictive maintenance and functional safety compliance.
For automotive applications, the BSP772T is particularly valuable. It aligns with the industry's shift towards electrification and advanced driver-assistance systems (ADAS), where reliability is non-negotiable. Its ability to handle the challenging 12V battery environment, characterized by large voltage fluctuations and high electromagnetic interference (EMI), makes it an ideal choice. In industrial settings, the switch’s robustness ensures reliable operation in programmable logic controllers (PLCs), motor drives, and other control systems that demand high uptime.
The integration of these features into a single PG-TDSO-14 package helps designers reduce the overall component count, save valuable PCB space, lower system cost, and accelerate time-to-market. The combination of high performance, diagnostic intelligence, and robust protection makes the Infineon BSP772T a pivotal component for engineers designing the next generation of reliable automotive and industrial systems.
ICGOODFIND: The Infineon BSP772T is a highly capable high-side switch that excels in delivering power, protection, and diagnostics. Its integration simplifies design and enhances system resilience, making it a top-tier choice for demanding automotive and industrial applications.
Keywords: High-Side Switch, Automotive Applications, Over-Current Protection, Diagnostic Feedback, Power MOSFET
