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UCC28951-Q1: 在某些情况下驱动OUTC、OUTD出现超过或者小于50%的驱动异常

Part Number: UCC28951-Q1
Other Parts Discussed in Thread: UCC28951, UCC3895, UCC28950

红色:初级互感器电流波形

蓝色:outc驱动波形

绿色:输出电压波形

 大家好:

        我在用UCC28951调试一个6KW电源,输入为280V,输出27V/230A。在从0A切载到230A的过程中,出现了上图的异常。outc,outd均出现了大于50%或者小于50%的的驱动抖动,导致变换器偏磁,出现电流尖刺。请教大家是什么原因呢?