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lm3488空载上电输入电流过大

电路是典型电路,电感是10uH,检测电流电阻是10毫欧,调试用的是可调数字电源,当限流为10A以下时,无法启动,输出占空比为100%,电源处于CC模式,电压下降。感觉这个芯片上电瞬间要达到过流保护值,才能够正常启动,空载启动就要10A以上的电流