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TPS54335A问题咨询

Other Parts Discussed in Thread: TPS54335A

我再使用TPS54335A过程中,12V转3.3V,如果上电时加延迟的话,总是会出现一个台阶,延迟时间长这个台阶的长度就长(黄色线),同一个板上,12V转1.5V加了延迟就不会(蓝色线)

调整分压电阻可以适当改变启动的时间,1.5V也是一样,3.3V是直接上拉到12V,EN脚价格电容都会有台阶出现,不知道是哪里可以调整。