Power mosfet range improves performance

1 min read

Infineon Technologies has expanded its OptiMOS power mosfet portfolio, with a range of 200 and 250V devices.

These are designed for synchronous rectification in 48V systems, DC-DC converters, uninterruptable power supplies and inverters for DC motor drives. According to Infineon, the OptiMOS 200 and 250V technology features the lowest figure of merit on the market, cutting conduction losses in system designs by one half. Engineers designing 48V power supplies using a diode based rectification stage in the switched mode power supply now have an alternative that Infineon says enables overall efficiency levels exceeding 95%. This is 2% higher than typical today and translates to 30% lower power losses. The mosfets have been introduced to help address the growing demand for higher efficiency in telecommunication networking markets, where business customers are seeking economic and market positioning advantages based on green technology infrastructure. The OptiMOS 200 and 250V family devices feature R DS(on) (on state resistance), which Infineon states is 50% lower than alternative devices and the lowest possible power losses in high current applications. The industry's lowest gate charge (Q g) – up to 35 percent less than alternatives – contributes to low losses and fast switching in switched mode applications like isolated DC-DC converters for telecom applications.The devices incorporate reduced device paralleling and a fast and low complexity design process due to optimised switching behaviour. Andreas Urschitz, vice president and general manager, Industrial and Multimarket Division at Infineon, said: "Infineon's OptiMOS technology consistently sets the benchmark in key specifications for power system design, including leading on state resistance and figure of merit characteristics that enable reduced power losses and improved overall efficiency. Our commitment to continuous improvement in manufacturing process and packaging allows us to extend the product family into a higher voltage range, in line with our company wide strategy to address the energy efficiency challenges facing modern society."