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Original question:

TPS65185: the minimum application voltage of TPS651851 ?

TPS65185: Noise occurs when using TPS65185

Lumina Gui
Genius 3175 points
Part Number: TPS65185

Hi TI Teams,

One of our customer reported that their tablet products usingTPS65185, and there is current noise when refreshing the screen. Through analysis, it is confirmed that the noise is generated by TPS65185.

The schematic design is as below:

Can u help to analyze the cause of the problem? 

Thanks,

Kind Regards

  • 0
    TI__Genius 10460 points

    Hi,

    I have some questions to understand the issue:

    1. What are the panel's max load current requirements?
    2. How did the customer confirm the TPS65185 is generating the noise?
    3. Which rail is displaying the noise? 
      1. Can the customer provide a scope shot of the noisy rail?

    Thanks,

    Gerard