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ucc28950 变压器异响

Other Parts Discussed in Thread: UCC28950

你好 我参照UCC28950 评估板  外围参数  100w功率时 变压器出现“滴答滴答”有节奏的异响 之前 类似情况出现过 炸过管子 A B   cd管子也烧成短路  现在一旦有异响 我就关掉12V   管子不烧坏 请帮忙分析一下什么原因 我现在正在拆板子 查找是否是哪个器件烧坏了