This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

UCC28722: Could you tell me about AC/DC converter(Isolation Power IC)?

Part Number: UCC28722
Other Parts Discussed in Thread: UCC28911, UCC28704, UCC24636, UCC28700

Hi team.

I have any questions.

So, could you tell me about this ?

Please help me !

Q1:I'm trying to introduce the following devices to the following specifications, is it possible to use it?
Device:UCC28722

Input Voltage:80V to 250V @ AC
Output Voltage:13V, 15V and other…
Output Power:~20 W @ total

Q2:Is there anything that is ICs with Goood Efficiency that conform to this specification?

Competitor is MIP2E2DMY (Panasonic) and UCC28911 has cost contending is also severe and due to power shortage and I am thinking that UCC28722 with freedom of power for external FET is good.
I could not find a suitable circuit example in the data sheet or "TI Designs", so I asked a question.

Please tell me.

Best regards,

Pokkun (Masumi Sekiguchi)

  • Hi Pokkun,

    Thanks for your interesting in TI's product.

    For 20W application , I suggest you use UCC28704, which also a PSR controller , more better on efficiency and lower cost.

    And I also found a reference design which output is 12V/2A  close to your application. Please find the reference design in attached file.

    If you want use SR controller , I proposal UCC24636 can be compatible with UCC28704.

    ThanksPMP21239A(001)_Sch.PDFPMP21239 REVA Test Report.pdf

  • Thank you for the answer.

    There is a difference in cost between UCC28722 and UCC28704, but where is the difference in characteristic performance?
  • Sekiguchi-san,
    UCC28722 is limited to about 10W based on common BJTs that are available from a current gain parameter standpoint. See this app note here for more explanation: www.ti.com/.../slua858.pdf

    Like Jaden mentioned UCC28704, (or UCC28700 if you don't need cable compensation) is probably a good option.
    Regards,
    John