• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 136 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.

UCC29910A: UCC29910 Upper power limits?

Lucas Uecker
Prodigy 30 points
Part Number: UCC29910A
Other Parts Discussed in Thread: UCC28070A, , UCC28019A

Tool/software:

Hello-

I'd like to implement a Buck PFC to convert 3-phase AC power (either 208 or 480 in separate designs) to ~200 Vdc at maximum of just over 2kW. According to sluaao8 the upper power limit of UCC29910A would be at about 2kW but suggests the UCC28070A in interleaved PFCs for higher than 2kW, but the application information on the UCC28070A datasheet shows a boost configuration. Can a UCC29910A based buck PFC be pushed to this kind of output voltage and power rating? If not, are there higher power interleaved buck PFC options?

Thanks

  • 0
    TI__Mastermind 40580 points

    Hello Lucas, 

    The Product Overview paper SLUAAO8 makes no mention of the UCC29910A.  I believe you are mistaking the UCC28019A that is suggested for up to 2kW. 

    The UCC29910A is optimized for low power operation over the so-called "universal-line" input range with Vout about 84Vdc.  
    With specialized adaptive circuits, it can probably be scaled for use in a 2kW, 200V output design, but off-hand I don't know the extent of the necessary modifications.  
    But it is definitely designed to be a buck-PFC controller. 

    The UCC28070A is a boost-PFC controller which can eb used in multi-kW applications. 
    It, too, can be adapted to buck-PFC, however I think the adaptive circuitry needed for using this controller may be more complicated and extensive than those needed to extend the UCC29910A capability.   

    I suggest to peruse the UCC29910A datasheet, identify the built-in limitations, and investigate what adaptations would be necessary to accommodate your input and output requirements to the UCC29910A limitations. 

    Regards,
    Ulrich