用TPS59124设计一款双路输出电源,输入电压4.5V~20V,输出可调,输出负载8A,按PDF典型应用画板,现在碰到以下2个问题。
1、在5V输入时,输出电压3.3V与1.2V,最大能带载的电流只能到4A,加大负载就无输出,也不能启动。
2、输入电压只能在6V以内,往上就就算是空载也无输出。
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