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TPS63070稳压到6.5v给舵机供电，没用两天芯片和外围就发烫这是为什么？
上传一下你的原理图和Layout吧，
确定一下是不是参数不合理导致的，对照数据手册，看看开关节点波形时候正常
原理图应该没什么问题，layout需要改一改，参考数据手册11.2修改你的布局布线。
像这种大功率的开关电源，铺地是很重要的散热手段
