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TPS61175应用疑问

Other Parts Discussed in Thread: PTN04050C

我想做一个输入3.6V,输出14V,输出电流0.5A左右。FREQUENCY脚我大概接的400多K的电阻,L设为30多UH,输入输出滤波电容都是钽电容和瓷片电容并联,我发现输出带个几十MA都会被拉低啊,更有甚者,工作一段时间后本来就被拉低的电压甚至拉到了跟输入电压一样的大小。我之后又在没有改电感的情况下改变了几次FREQUENCY脚所接的电阻值,结果效果都差不多。能麻烦TI的工程师帮忙设计一个合理的电路吗?感激不尽~