help with 3 phase inverter

[PE_HELP]

The MOSFETs in my 3 phase inverter bridge are getting hotter than I would like. Would it be a good idea to put capacitors across the drain to source of all 6 mosfets? I think it would help to divert some of the current from the MOSFET internal diode during turn off thereby reducing losses in the MOSFETs. Any thoughts?

 

[FvM]

Addingt capacitors will increase switching losses, at least for a standard (hard switching) converter.

 

[PE_HELP]

Thanks FvM for your response. Will it reduce the heat on the MOSFETs though as anti-parallel diode won't be carrying so much current?

 

[schmitt trigger]

How are you driving the gates?
Improperly driving the gate could cause it to be in linear mode for too long.

But without a schematic our blind guesses are just that, and most likely incorrect.