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The thru hole boards are populated already. The new one is really done just with the 4th igbt in mind, so you can do a boost input stage. Since your motor is already wound for a lower voltage, it would sort of be a waste. There would be an empty part of the board for no reason. To be honest, I would prefer just to keep things mostly as the current board, since I prefer thru hole , and like the diy model. But there are only surface mount chips with 8 pwms. So, the people who want to use those 700v motors need a boost stage.
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