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。
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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。
你好,最高才87的效率是有点低,我的驱动波形测试过了,很完美,只是7脚的电容按要求是470P,但我的要像470P不行(没有输出),要用到1Nf才能正常输出,请问正常不?你发出来的最高有90%的效率。