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ucc28950 次级波形上下不对称

Other Parts Discussed in Thread: UCC28950

你好 :

我用UCC28950移相全桥 测量的次级变压器波形轻载的情况下不对称 

波形如下,粉色变压器次级波形:

请问是什么原因 变压器偏磁吗 

还是跟同步整流端驱动有关系

我的同步整流驱动其中一个MOS管走线较长

会是这样个原因引起的吗 

若不更换变压器 有解决的方法吗