我用24V转5V的DC-DC模块后接TI 的LMS1587-3.3定压输出的LDO输出3.3V,在正常工作状态是用示波器测量该3.3V输出纹波峰峰值100mv,120mv,160mv跳动,纹波过大,该怎么解决?DC-DC输出的5V纹波对LMS1587-3.3的影响怎样?
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