We test LM3478 EVM board & try to change Vout to 5V2A but can't work. We use both datasheet page2 circult & webench circult but result is the same.
So is that workable? Or what should we have to know about LM3478 if we need to use on 3.3 input? Like Vgs threshold or something?
The fail symptom is before 5V 0.2A, sw node is normally but over 0.2A sw node will start jitter & unstable... Output ripple will become larger.
Please send us your design schematic with the actual part numbers and values that you are currently using on the board. We could take a look at it and let you know.
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