Infineon AUIRFR540ZTRL: High-Performance Automotive MOSFET for Power Switching Applications
The relentless drive towards vehicle electrification, advanced driver-assistance systems (ADAS), and enhanced comfort features demands robust and highly efficient electronic components. At the heart of many of these automotive power systems lies the power MOSFET, a critical switch controlling everything from motors to LED lighting. The Infineon AUIRFR540ZTRL stands out as a premier component engineered specifically to meet the rigorous demands of the modern automobile.
This device is an N-channel power MOSFET built on Infineon's advanced low ohmic technology, which is the cornerstone of its exceptional performance. The primary hallmark of the AUIRFR540ZTRL is its remarkably low on-state resistance (R DS(on)) of just 6.5 mΩ. This ultra-low resistance is crucial as it directly translates to minimized conduction losses. When the MOSFET is switched on, it wastes very little power as heat, leading to significantly higher system efficiency and reduced thermal load. This allows for smaller heatsinks or even their complete elimination in some applications, contributing to overall system miniaturization and cost savings.
Designed from the ground up for the automotive environment, this MOSFET is AEC-Q101 qualified, guaranteeing its reliability and performance under the extreme conditions typical of automotive applications. It is engineered to operate flawlessly across a wide temperature range and withstand the voltage spikes and transients common in vehicular electrical systems. Its ability to handle a continuous drain current (I D) of 150 A at 25°C and its high peak current capability make it exceptionally suited for handling the high inrush currents seen in motor start-ups or lamp filaments at cold start.
The AUIRFR540ZTRL is housed in a TO-220 FullPAK package. This package is fully insulated, meaning the metal tab is isolated from the die. This offers a major advantage for designers: it allows for easier mounting to a heatsink without the need for an insulating washer, streamlining the assembly process and improving thermal performance by reducing the thermal resistance between the package and the heatsink.
Typical applications where this MOSFET excels include:
DC Motor Control: For power windows, seat adjusters, wipers, and pumps.
Lighting Systems: Switching for high-intensity LED headlights and interior lighting.
Solonoid and Valve Control: In transmission control units and engine management systems.
Heated Seats and Steering Wheels: For efficient PWM-based power control.
ICGOOODFIND: The Infineon AUIRFR540ZTRL is a benchmark for automotive-grade power switching. Its combination of ultra-low R DS(on), high current handling, AEC-Q101 qualification, and innovative fully insulated package makes it an indispensable component for designers aiming to create efficient, compact, and highly reliable automotive power systems.
Keywords: Automotive MOSFET, Low RDS(on), AEC-Q101, Power Switching, High Current Capability.
