Quote:
Originally Posted by Piotrsko
I thought the spec stated you can run 400a @ rated V for a 92 degree temp rise.
First line collector current.
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I think that is for the raw IGBT, and depends on how well the heat sink takes away the heat ... Maybe not?
Quote:
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My swag rule of thumb, 15 seconds tops. My experience is voltage didn't seem to make much thermal difference, or I cant measure it using basic homebrew equipment.
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The voltage does not appear to affect heat. But reflected waves and switching transients do appear to ... amplify? .. the voltage. If you keep your bus voltage to half or less, the IGBTs appear to survive
