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DLP6500 EVM - Which Power Supply Components make the most noise on DMD Board?

Jon Ledwith
Prodigy 50 points


I have an application where the audible DMD power supply noise is not acceptable. I have tried to identify the most noisy components, capacitors and inductors, and in the process damaged the DMD itself. I understand that the audible noise doesn't imply the power supply is not functioning properly but this has been a costly exercise as the replacement DMD is almost 3/4 the cost of the full development kit.

Could someone identify the components I need to change to make the power supply quiet? Are there recommendations for specific replacement components that would be quiet?

Thanks,

Jon

  • 0
    TI__Expert 6370 points

    Hi Jon,

    Thanks for your question! You rightly indicated that the possible sound would be coming from your power supply circuitry. I am going to follow up with some of our board designers to make sure I get you the best answer to your question. I'll get back to you tomorrow or later in the week.

    Thanks,

    Trevor