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抱歉,我犯了个低级错误,忘记芯片的欠压关断功能,导致误以为异常。结贴
直流稳压源设置最大3A输出。正常情况下是24V0.5A或12V1A,当下降到11.1V的时候,直接从约1A跳到十几个mA的待机电流。
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非常感谢,我忽略了欠压关断脚的电阻配置导致。