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TPS61175

Other Parts Discussed in Thread: TPS61175, TPS55340, TPS55330, MC33063A

按TPS61175说明书绘制的原理图并打样,制作后,采用单节锂电池供电,实现3.7V/20V,在不接负载时,输出,满足要求,接负载后,输出由20V降到4V,换稳压电源供电结果也是一样,怎么回事?具体需要更改什么配置来改善?