用LMZ14203H设计了一个24V-12V的DCDC转换器，原理图见附件1
输出滤波电容采用了47uF/16V的陶瓷电容，但是输出信号发生振荡，振荡频率180Hz左右，不知道问题出在哪里？请高手解答一下，谢谢了
是因为输出电容ESR太大吗？但是陶瓷电容的ESR应该已经比较小了，但是查不到具体的ESR值
输出振荡的波形见附件2
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