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求助:UCC27714D输出驱动脉冲被展宽了



我在做数字LLC,用UCC27714D来驱动MOS管,测试中发现,当开启外部强电源时,UCC27714D输出的上管驱动脉冲被展宽了,如下图所示:

请专家帮忙看看,这个可能是什么原因呢?

UCC277144D的外围电路都是按照DataSheet上给出的,参数也是用的与应用实例一致的。