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UCC28180: UCC28180 EMI & efficiency optimization

Lin Zhao
Intellectual 1230 points
Part Number: UCC28180

Hello,

Could you give some suggestion on UCC28180 EMI & Efficiency optimization, below is description, thank you.

Input 220-480, output 600W
Input 220-277, output 480W
Input 1802-480, output 1200W
Input 220-277, output 1400W
At present, the frequency band that conducts EN55015 10M-20M is NG. The inductor uses magnetic ring inductance, iron silicon aluminum.
During low voltage input, the efficiency suffered.

  • 0
    TI__Mastermind 31580 points
    Hi Lin,

    Can you share the EMI plots and the PCB layout and schematic.

    Thanks

    Peter
  • 0
    TI__Mastermind 34465 points

    Hello Lin Zhao,


    To improve either  EMI or efficiency you should start by evaluating the test results.
    Do you have any test results ?

    Then you should look at the electrical and mechanical design of the product you are testing.
    Do you have any design  information available?
    By this I mean the schematic for the pfc controller, the power stage and the EMI filter.
    You will also need the pcb layout files that detail component placement and  packaging information of each part and the overall pfc.

    If you feel the UCC28180 pfc stage is causing the issue you need to test this on its own with a resistive load.
    Efficiency and EMI are a systems based parameter but this post can only address the pfc stage.

    Please post this data and I will be able to offer suggestions on how to improve your results

    Regards

    John.

     

  • 0 in reply to John Griffin1
    TI__Intellectual 1230 points

    Hi John,

    thank you, I'm collecting related data.

  • 0 in reply to Lin Zhao
    TI__Mastermind 31580 points
    Hi Lin,

    It has been nearly two weeks since the last update, please add more information or we can close this post and you can create a new post when you have the information available.

    Regards

    Peter