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TPS54336应用BOOT引脚问题

TPS54336 当输入19V时,输出5V,但当其BOOT引脚跟GND短路很短的一段时间的话,芯片就会烧坏,必须重新换芯片,是什么原因导致芯片这么容易烧坏?

想跟大家讨论讨论。