Part Number: TMS320F28035
用此芯片设计一款无刷电机控制方案,上电后用PWM驱动电机控制芯片开启MOS时,TMS320F28035芯片就发生VDDA引脚对地损坏,其它引脚对地测量无明显损坏,芯片使用3.3V LDO供电,测试供电电压也无过冲,请问通常产生什么操作才会引脚芯片VDDA引脚对地损坏?

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Part Number: TMS320F28035
用此芯片设计一款无刷电机控制方案,上电后用PWM驱动电机控制芯片开启MOS时,TMS320F28035芯片就发生VDDA引脚对地损坏,其它引脚对地测量无明显损坏,芯片使用3.3V LDO供电,测试供电电压也无过冲,请问通常产生什么操作才会引脚芯片VDDA引脚对地损坏?
