大家好,我最近使用TPS54383 24V输入12V和5V输出时,12V输出端(SW1)正常,5V输出端(SW2)波形异常,2路规格参数是一样的。原理图和波形见下:
SW2波形
理想的波形应该为这样。
我尝试着更改5V后端的滤波电容从100uF改为200uF以及更改采用电阻的走线,结果一样,谁请帮忙分析一下,谢谢!
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