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UCC256303做电源的问题

Other Parts Discussed in Thread: UCC256303

用 webench  设计输入DC250-380V   输出DC30V 25A 可以出现设计方案.        改成输入AC 220V  50Hz   输出DC 30V 25A 却不能生成设计   ,

         其实我实际需要的输出是0-30V可调  电流20A以内就刚好够用

这个UCC256303难道不能AC-DC吗?