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电源芯片LMZ22010型号12V转1V和1.8V电压时,采用直流稳压源给板卡供电,经过测试1.8V输出电压正确,1.0V电压输出不正确,实际为1.54V,直流稳压源电压设定为12V,1A,在测试时直流稳压源电压降为5V,测试时为无负载情况下,原理图如下: