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全脉冲测试问题

Other Parts Discussed in Thread: TPS54286

Hi

     电源部分采用了TI的TPS54286,在做全脉冲测试2000V(对电源直接注入)中,电压抖动很大,导致LCD显示屏闪屏严重,TPS54286烧毁。现在前段加了100uF 50V,100uF 50V,330uF 50V三颗电容,对电源做脉冲测试有所改善,但对地做脉冲测试LCD依然闪屏,TPS54286有时还会烧毁。

     大家有什么方案没有?