800 V MOSFET for Flyback SMS: suggestions?

[edaenrico]

Hi,

I'm designing a 30 Watt Flyback converter.

I'm gonna use a low Rds, 800 V Mosfet.

Are there any suggestions?

Thanks in advance,
Enrico Migliore

 

[mtwieg]

How low of an Rds on do you think you need? To get much below 1 ohm, you're looking at expensive technology, like SiC. For such high voltages, conduction losses probably won't even dominate, so you might look at fast IGBTs as well. Or just using a different topology that requires less voltage handling.

 

[voroojak_52000]

see here https://http://www.onsemi.com/PowerSolutions/parametrics.do?id=809

and https://www.st.com/internet/analog/subclass/1168.jsp
use filters for best choice.

 

[goldsmith]

Hi,

I'm designing a 30 Watt Flyback converter.

I'm gonna use a low Rds, 800 V Mosfet.

Are there any suggestions?

Thanks in advance,
Enrico Migliore

Hi Enrico
Try 2sk2611 !
Best Wishes + Merry Christmas
Goldsmith