初次使用LM5576,电路图如上,输入电压采用12VDC,希望得到输出为7V/3A,
输出电压一直都为6.4V,而且改变R4和R5阻值,输出电压仍然为6.4V。
测试负载能力很弱,100mA.
请专家给予指导
谢谢
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