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DRV8301: 驱动器上桥臂电荷泵BST引脚(48\43\38)短路

Part Number: DRV8301

请教一个问题,参考官方数据手册自己画了一块板,使用Odrive的固件,测试的时候使用OdriveTool配置完参数后8301会发烫,经过测量三个电荷泵的BST引脚会随机短路接地(已经坏了两片,不同的脚),Gvdd电压也会掉到3伏左右,将短路的BST脚剥离焊盘后温度正常。请问可能存在的原因有哪些?附上原理图