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It wouldnt' work at 250v. It would blow up, since the components are rated for 200v. I finished a driver board, control board, and power board for a high side 350v DC (or so) controller though with film caps. 600v TO-247 IGBTs and diodes, and 450v film caps. I just need to send it in. It would only be rated for around 400 amp though.
The last 1000 amp controller blew up, but there were extenuating circumstances. Some of it was a software mistake and a miscalibrated current sensor. I'm finishing up another one which is low side drive, but with 6 isolated supplies. It will be done hopefully by tomorrow or monday.
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