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TPS40210升压效率低

Other Parts Discussed in Thread: TPS40210

各位大神,现在我用TPS40210做12升85v 0.3A,能正常工作,但效率低(电感用铁硅铝的100uH ,mos用25A100V Qg值及Rds(ON)都很小,),只有87%,调了好几天了,还是不行,请问各位大神我该怎么改。