Various aspects of home brew inverters

Author	Message
Warpspeed Guru Joined: 09/08/2007 Location: Australia Posts: 4406	Posted: 07:40am 12 Apr 2021       Safe operating area is a thermal limit of conduction loss only. Ten milliseconds on, and then a cool down period significantly longer than 10mS. Its switching on and off at 20Khz+ so there will be switching losses on top of conduction losses, and you cannot be sure that the current shares equally between the three mosfets. But I think you might be getting pretty close to the limit, but difficult to know where the cliff edge of absolute ultimate doom precisely is.