你好!
低压85Vac输入时,VCC电压跌落最低电压是7.8V,高压288Vac输入时VCC电压跌落最低电压是7.9V.两个值小于UC2843AQ最小工作电压的最大值8.2V,请问这样是否有隐患?如下图
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请问你所指的跌落是上升过程中有个小跌落么?那个电压是芯片启动到VCC辅助绕组接收时造成的,这个没关系