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buck电路boot电容短路和断路实测波形
2022-07-29 05:59:00 【ltqshs】
电容C14短路引发的故障
文字描述对应相应的下图的波形图。
5V0_MOS电压波形
VDD18波形
VCC33波形
电容C14断路波形,也就是没有输出,可能是靠内部ESD二极管的反向压降才有0.9V左右的输出压降。
正常输出5V0_MOS电压波形
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