DLPA2005: the squeak noise of inductor （DLPA2005 peripheral）

Frank Peng

Part Number: DLPA2005
Other Parts Discussed in Thread: DLPC3430,

Dears

When DLPC3430, DLPA2005 works, the inductor (2.2uH) makes a squeak noise, the SCH is the same as reference design. change the indctor, issue still exist .

over 5 years ago

0 Brandon Seiser over 5 years ago

TI__Intellectual 1825 points

Hi Frank,

Thank you very much for your post.

For your issue, is the squeak noise very high pitched and very loud? Also, have you been able to isolate the inductor as the part causing the noise?

Is your system able to correctly display an image?

Thanks,

Brandon

0 Kyle Rakos over 5 years ago

TI__Mastermind 20045 points

Hi Frank,

Could you also please confirm what current the LEDs are running at when you observe this noise? Could you vary the current across the operational range and see where the noise remains?

Thanks,
Kyle

0 Frank Peng over 5 years ago in reply to Kyle Rakos

Intellectual 440 points

Hi Kyle

Thank you ，The problem has been solved.

Because of the holidays, TI E2E™ design support forum responses will be delayed from Dec. 25 through Jan. 2. Thank you for your patience.

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DLPA2005: the squeak noise of inductor （DLPA2005 peripheral）