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我按照TI资料 做了一个四管子buck boost,用DSP同步控制,问题如下
1、50%占空比,按照buck and boost占空比计算,Vout=Vin
2、当负载为2K欧姆时,Vout=Vin
3、当负载为20欧姆时,Vout下降严重,怎么回事?
系统虽为开环,但是电压下降很多也不正常吧?