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Original question:
TPS74401: 用TPS74401电源芯片中,发现部分电源没有输出,经过进一步对比验证发现芯片坏了
这个芯片bias管脚的功能主要是?能否通俗点的讲解下
用BIAS管脚为TPS74401供电是为了取得超低压差和高效率,最小值必须比输出电压高1.62V(VDO-BIAS)。