NXP BUK7M17-80EX: A High-Performance Automotive MOSFET for Demanding Applications

The relentless drive towards vehicle electrification, advanced driver-assistance systems (ADAS), and more sophisticated onboard power management demands components that deliver uncompromising performance, reliability, and efficiency. At the heart of many of these critical automotive systems lies the power MOSFET, a workhorse for switching and controlling electrical power. The NXP BUK7M17-80EX stands out as a premier solution engineered specifically to meet the stringent requirements of the modern automobile.

This MOSFET is built upon NXP's advanced Trench 9 technology, a cornerstone of its design that enables exceptionally low on-state resistance (RDS(on)). With a maximum RDS(on) of just 1.7 mΩ at 10 V, the device minimizes conduction losses. This high efficiency translates directly into less wasted energy, reduced heat generation, and the potential for smaller heatsinks, contributing to overall system miniaturization and improved fuel economy or electric vehicle range.

Beyond raw efficiency, the BUK7M17-80EX is designed for robustness in the harsh automotive environment. It offers a high maximum drain current (ID) of 170 A, providing ample margin for high-current applications like electric power steering (EPS), braking systems, and DC-DC converters. Furthermore, it features an AEC-Q101 qualification, guaranteeing that it meets the rigorous quality and reliability standards mandated for automotive components. This includes exceptional resilience against thermal cycling, mechanical shock, and vibration.

The device's 80 V drain-source voltage (VDS) rating makes it well-suited for handling load-dump events and other voltage transients common in 12 V and 24 V automotive battery systems. Its low gate charge (Qg) also ensures fast switching speeds, which is crucial for high-frequency switching applications, further improving efficiency and allowing for smaller peripheral components.

In application, the BUK7M17-80EX is an ideal choice for a wide array of demanding roles. It is particularly effective in:

Motor control modules (e.g., for EPS, pumps, fans)

Solid-state relay replacements in junction boxes

High-current DC-DC conversion

Active load switches in ADAS and infotainment systems

ICGOODFIND: The NXP BUK7M17-80EX is a benchmark automotive-grade MOSFET that successfully combines ultra-low on-resistance, high current handling, and robust reliability. Its optimized performance through Trench 9 technology makes it a superior choice for designers aiming to enhance efficiency, power density, and durability in next-generation automotive electronic systems.

Keywords:

1. AEC-Q101 Qualified

2. Low RDS(on)

3. Automotive MOSFET

4. Trench 9 Technology

5. High Current Handling