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Subject:	The Buck Switch-mode Power supply buzzs
From:	"Liew, Sen Joon" <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Wed, 8 Jun 2005 18:14:14 +0800
Content-Type:	text/plain
Parts/Attachments:	text/plain (21 lines)

Hi, Everyone,

I have one issue to ask for assistance. I am designing a simple Switch-mode Buck power
supply. I noticed that when I changed to certain inductor value. The whole board seems to
buzz loudly. Does it mean I used the wrong inductor value or otherwise.

Has everyone encountered the same phenomenon before, and what is the possible cause.
Your response is very much appreciated. Thanks!

Best regards,
Sk Liew

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