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TPS2553-1: 量测1脚和6脚短路,即内部MOS管的源级和漏级已击穿导通,调控作用已失效。

Part Number: TPS2553-1


Schneider A9314133-E01-D Function Test Fail Analysis.doc

查看此芯片FA,芯片1脚为POWER IN,6脚为POWER OUT

查看芯片内部电路,此芯片是通过给EN高低电平信号来控制内部MOS管的开关,从而来调控POWER OUT输出。量测1脚和6脚短路,即内部MOS管的源级和漏级已击穿导通,调控作用已失效。

请问根据测试报告,是否可以说明这五个芯片质量有问题?