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I think that 600V rating of IRS2186 bootstrap drivers is too low for 400 V inverters. I'm not aware of other bootstrap drivers with sufficient voltage margin. That's why separate low- and high side drivers come into play.
Starting power electronics from the scratch means learning things the hard way. I smell burned burned IGBTs and drivers...
Starting power electronics from the scratch means learning things the hard way. I smell burned burned IGBTs and drivers...