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UCC24612: MOS驱动会被拉低

Part Number: UCC24612

  你好,左图黄色波形是UCC24612在没有驱动电阻时即没有连接到MOS上时的Vgs波形,右图黄色是50欧的驱动电阻的Vgs波形,MOS管是IRFS4227TRLPBF,请问这是什么问题引起的?怎么解决?芯片VDD的电容距离有点远会不会引起这种现象?