You mean two antiparallel diodes in series with drain?
No I did not try, but I would not expect to much advantage, because you would still make use of the body diode and for reverse recovery you would still have to remove the related charge. And for this path you would use one forward direction of the antiparallel diodes.
...but that's just grey theory... Did you try it? If yes, please post comparative screen shots.
Is there a reason for fast recovery high voltage diodes? If antiparallel you should be able to use the lowest voltage schottkys...
Anyway it would be again 3 ugly power semiconductors instead of just one.
Yes, yes... I know, I am driving you all crazy with my anti-component attitude.
Of course I am also fully aware that using the body diodes is causing by far more losses during hard switching compared to keeping the body diode without current. For continuous high power applications the combination of a series schottky plus a fast soft recovery freewheling diode is for sure the way to go. I do not doubt that (just compare i.e. MUR3020 vs a MosFet body diode.... :Tongue: ) . But music program does not show continuous high power. If you settle a filter with resonable higher inductive current ripple (means small choke), then you will not often have hard switching conditions. May be 10% of the switching events will be hard even if you play music close into slight clipping. And by this I do not expect issues with the losses during musical use. The power stage of my amp is not intended for continuous DC-welding applications. Such use would for sure overheat it....