Nexperia’s new 40 V low RDS(on) MOSFETs enable higher power density in automotive and industrial applications

Nexperia , an expert in basic semiconductor devices, today announced the launch of a new 0.55 mΩ RDS(on) 40 V power MOSFET in a high-reliability LFPAK88 package for automotive (BUK7S0R5-40H) and industrial (PSMNR55-40SSH) applications. These devices are the lowest RDS(on) 40 V devices produced by Nexperia , and more importantly, they offer more than 50 times the power density of traditional D2PAK devices. In addition, these new devices also provide higher performance in avalanche and linear modes, thereby improving durability and reliability.

Neil Massey, Product Marketing Manager at Nexperia, comments: “The new 8 x 8 mm LFPAK88  MOSFET combines the latest high-performance superjunction silicon technology with the proven LFPAK copper clip technology, which is renowned for delivering outstanding electrical and thermal performance. The low RDS(on) enables us to pack more die into the package, increasing power density and reducing device footprint.”

Measuring just 8 x 8 x 1.7 mm, these new power MOSFETs feature leading linear mode/safe operating area (SOA) characteristics for safe and reliable switching at high currents. At 1 ms, 20 VDS, SOA is 35 A due to the combination of die and package, while at 10 ms, 20 VDS, SOA is 17 A, where package dominates. These numbers are 1.5x to 2x better than competing products. The devices also offer a best-in-class single pulse avalanche rating (EAS) of 2.3 J and a very high ID current rating of 500 A, which, unlike competing products, is a measured limit, not a theoretical limit.

With the size and performance advantages of Nexperia's 8 x 8 mm LFPAK88 MOSFET, designers can replace two parallel legacy devices with one new LFPAK88, simplifying manufacturing and improving reliability. The AEC-Q101-qualified BUK7S0R5-40H device provides twice the reliability required by automotive standards and is suitable for braking, power steering, battery reverse protection, e-fuse, DC-DC converters and motor control applications. The industrial PSMNR55-40SSH MOSFET is suitable for battery isolation, current limiting, e-fuse, motor control, synchronous rectification and load switching applications in power tools, appliances, fans, electric bicycles, scooters and wheelchairs.