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  • PMP41009: About a filter capacitor on the VS input

    Resolved
    Part Number: PMP41009 Why place a filter capacitor on the VS input even though specification states "Avoid placing a filter capacitor on this input which interferes with accurate sensing of this waveform"? Also, what noise effects are being considered…
    • Resolved

  • RE: PMP41009: Questions about the cascode

    Hi, Shilin, It is possible to do the regulation without optocoupler. Below is the example to accomplish feedback through auxiliary winding(Vout), however, we can't directly add resistor on auxiliary winding rectifier voltage because there is no error…
    • Answered

  • RE: PMP41009:About the operation of UCC28740

    Resolved
    I'm sorry for replying late, because in Japan, it was a long holiday during Golden Week. As for the problem, I've solved it. I will post a new thread if there is something I don't understand or want to ask. Thank you.

  • PMP41009: Sample request

    TI Thinks Resolved
    Part Number: PMP41009 Other Parts Discussed in Thread: UCC28740-Q1 , PMP Could we provide 1pcs of sample about this reference design to customer? They will use UCC28740-Q1 in Motor Controller Unit. Waiting for your reply
    • Answered

  • PMP41009: Transformer Details

    Resolved
    Part Number: PMP41009 Hello, Can I get the details for the transformer used in the reference design? In BOM, there is no such part number is given. Regards, Darshan
    • Resolved
    • Answered

  • RE: UCC28740: Using a voltage divider to step the voltage at HV

    Resolved
    Hi Ikenna, The method which which show is a cascode solution which could potentially be used. I do not see the reference design/results online though. You can refer PMP41009 schematic and the following app note for HV startup methods (both conventional…
    • Answered

  • UCC28740: Transformer Choice for this flyback

    Resolved
    Part Number: UCC28740 Other Parts Discussed in Thread: TIDA-01505 , PMP41009 Hello, I need some help here with the choice of transformer I can use for this flyback converter (UCC28740) that can be able to step the input voltage to 15V, 2A and an input…
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