Infineon extends MOSFET application scope

The company has introduced a range of 200 and 250V devices suited for synchronous rectification in 48V systems, DC-DC converters, uninterruptable power supplies (UPS) and inverters for DC motor drives.

Said to feature the lowest Figure of Merit compared to alternative devices, OptiMOS 200V and 250V technology slash conduction losses in system designs by one half.

Engineers that until now designed 48V power supplies using a diode-based rectification stage in the SMPS now have an alternative that enables overall efficiency levels exceeding 95 per cent.

OptiMOS 200V and 250V devices feature R DS(on) (on-state resistance) 50 per cent lower than alternative devices, which translates to the lowest possible power losses in high-current applications.

The low gate charge contributes to low losses and fast switching in switched-mode applications such as isolated DC-DC converters for telecom applications.

The devices allow reduced device paralleling; the ability to use smaller heat sinks as a result of the low on-state resistance; and a fast and low-complexity design process due to optimised switching behaviour.

The OptiMOS 200 and 250V range enables the use of a slim SuperSO8 package (5 x 6 x 1mm) for applications that previously required DPAK devices (9 x 10 x 4.5mm).

Going from DPAK to SuperSO8 reduces the power semiconductor space requirement by more than 90 per cent and enables higher power density systems.

The range includes components in TO-220, TO-262, DPAK and SuperSO8 packages in R DS(on) classes 10.7, 20, 32 and 60mOhm.