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LM5175 9V转12V时输出电流太小。

Other Parts Discussed in Thread: LM5175

我们有四个左右的案子用了LM5175,都有一样的问题,在9V转12V时(都是Standby电源),最大输出电流只能到4A左右,超过后buck和boost的上下桥G极、Phase都会剧烈地抖动-关闭-抖动,电流再高就直接停止工作。12V以上转12V时,电流可以到6A以上。帮忙看下可能是什么问题。9V-12V.pdf