New application specific FET category delivers optimised performance

26-10-2020 | Nexperia | Power

Nexperia has defined a new MOSFET product group. Application Specific FETs (ASFETs) feature MOSFETs with optimised parameters for specific applications. By targeting individual applications, notable improvements can be delivered.


The company offers ASFET families for battery isolation, motor control, hot-swap and PoE applications. Defining the advancements that these tailored ASFETs can provide is application specific, examples include 3x–5x improvement in SOA for hot-swap applications and maximum current ratings over 300A for motor applications.


Commented Chris Boyce, senior director for the Power MOSFETs Group at Nexperia: “As designers push the boundaries of performance, it is crucial to understand how the MOSFET will be used in the application. There are 100+ parameters on a regular MOSFET datasheet, but usually only a few are critical in each project. However, as the applications change, so do the critical parameters. At Nexperia, we determine the performance of every element of our products; the core silicon technology, the chip design, the package and the manufacturing and test procedures. By keeping individual application requirements front and centre of our thinking, we can choose to optimise the parameters that matter most in a particular use-case, often at the expense of others of less relevance. In essence, we have combined our proven MOSFET expertise with a broad understanding of applications so we can tailor products which offer the ultimate performance for a specific application or functionality.”


Added Boyce: “We are continually seeking to deepen our understanding of specific applications, often working hand-in-hand with our customers. In exposing our best engineers to detailed application requirements, we are opening new and exciting possibilities of innovation – there are many more ASFET advances in the pipeline.”

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