Part Number:DRV8870
1、U4芯片第4脚损坏,测量对地阻值134.7Ω,能否分析下有哪些原因会造成该针脚损坏呢。
2、测量芯片第2和3针脚对地电压均为0V,测量芯片第6和8针脚电压均为1.5V左右,第5针脚供电电压正常为11.6V


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