Other Parts Discussed in Thread: LM5146
Hi team,
Our customer use LM5146, while it 5V output noise is 272mV, it's not usual.
Following is their schiematic.
Following is 5pin feedback and 8pin switch waveform.
Is there any wrong with that?
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Hi Sir,
What is your test condition on these waveforms? thanks.
Colin
Hi Sir,
I see the inductor chosen is too small and resulting in DCM mode. This can cause output ripple too large.
You can change inductor to 120uH and test again.Thanks.
Colin