• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 208 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

Input current of UC3854

MD Home
Intellectual 840 points

We use UCC3854 for PFC boost (220VAC to 390Vdc). we notic that the input current changing(out of spec at 20% load condition),after that I replce new IC( at same board) the result is the input current reduce and pass criteria. What parameter effect to this input current?

MD

  • 0
    TI__Mastermind 25130 points

    MD,

    From the information provided i can not tell.

    Can you send me a copy of the schematic including all component values? i need to see where the sresses are.

    Also please send the date code information on the failing part so that I can look up the batch history to see if there are any probelms with the lot.

    Regards,

    John