UBOOT起来之后,文件系统未启动之前,电流异常。与原来的芯片相比,7.4v外部供电情况下,电流增加约为6mA(6~8mA)。目前测到有十几颗芯片都这样,想请问如何定位该问题?
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监控的话需要独立测试1.2 1.8 3.3V三路电流,看看那路有所增加。
而且板子上有其他芯片的供电,也要独立测量一下。