Onsemi aims mosfets at server and telecom PSUs

Author: EIS Release Date: Dec 14, 2021

Onsemi is aiming at 80 Plus Titanium efficiency in server PSUs as well as telecoms with a 600V power mosfet family called 600V Superfet V.

 

ONSsuperfetV

“80 Plus Titanium certification requires server and data storage hardware to deliver 90% power efficiency levels in 10% load conditions, and 96% efficiencies when dealing with 50% loads,” said company general manger Asif Jakwani.

 

The 10% load condition is especially challenging.

 

 

For better reliability, the body diode is optimised for robustness and Vgss is ±30V.

 

 

 

There are ‘Fast, Easy Drive and FRFET versions.

 

Fast are optimised for high efficiency in hard switching topologies, such as PFC, with reduced gate charge (Qg) and EOSS losses. The devices are:

 

NTNL041N60S5H – 41mΩ Rds(on) TO-247 package

NTHL185N60S5H – 185mΩ Rds(on) TO-247

NTP185N60S5H – TO-220

NTMT185N60S5H – Kelvin source Power88 package (8x8x1mm)

Easy Drive for hard and soft switching, with an internal gate resistor and optimised internal capacitance, for applications including PFC and LLC. The 120mΩ  version has a built-in gate-source Zener diode to reduced gate oxide stress and improves ESD ruggedness leading. The devices are:

 

NTHL099N60S5 – 99mΩ TO-247

NTHL120N60S5Z – 120mΩ TO-247 with gate Zener

Fast recovery (FRFET) versions are intended for soft-switching topologies such as phase-shifted full bridge (PSFB) and LLC. They have a fast body diode and offer reduced reverse recovery charge and reverse recovery time. The devices are:

 

NTP125N60S5FZ – 125mΩ TO-220 with built-in Zener diode

NTMT061N60S5F – 61mΩ in Power88

NTHL019N60S5F – 19mΩ TO-247 – the lowest loss device