• State TI Thinks Resolved
  • Locked Locked
  • Replies 5 replies
  • Answers 2 answers
  • Subscribers 64 subscribers
  • Views 2496 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.

UCC28063 _ High-Power 15kW PFC design

Alex Gud
Prodigy 30 points
Other Parts Discussed in Thread: UCC28063, UCC28070

Hi Everyone,

I am working on a 15kW battery charger. It consists of

1. AC/DC boost PFC rectifier

2. isolated Full-Bridge DC/DC stage

My question is about AC/DC boost interleaved PFC. Input: 240VAC, 1phase. Output: 700 VDC, 25A 

I plan to use UCC28063 or similar controller to drive interleaved PFC converter.

Cost is less important than development time. DSP controller is a worst case option

1. Since most sources refer to <1kW designs on those type of off-the-shelf controllers, have you been able to get it working on this power ranges?

2. Can UCC28063 / similar controllers be used at 15kW power range with 2 inteleaved phases and SiC MOSFETs ?

3. Do you feel it is better to split into 2x converters delivering 7.5kW each (with 4 phases total)?

  • 0
    Prodigy 30 points
    By the way, input voltage range may be pretty narrow - 240 VAC 1phase +-10%.
    That should minimize the requirements for inductor and capacitors size.

    By the question still open: can off-the-shelf controllers like UCC28063 be used in 7-15 kW range?
  • 0 in reply to Alex Gud
    TI__Genius 9790 points

    Hi, Alex

    15KW is really hard for UCC28063, since UCC28063 is 2phase interleaved boundary mode PFC controller. The peak current of MOSFET, inductor and freewheel diode is very high.

    I recommend UCC28070, which is 2 phase interleaved CCM PFC controller, which can handle high power, there is 6.6kW product at customer side with UCC28070.
    For 15kW, two UCC28070 with 4 phase CCM interleaved PFC would be better solution.

    ps: do you confirm it is OK for one phase AC with 15kW? not three-phase AC?

    Regards,

  • 0 in reply to Yunsheng Qu
    Prodigy 30 points

    Hi Yunsheng,

    Thank you for the answer.

    I also decided to go with 2x UCC28070 giving a total of 4 phases. Glad to know there are successful cases with similar power rating.

    By chance, Are there any reference docs on mentioned project?

    Using 240VAC 1phase is a requirement even though I realize that is unconventionally high power for a single phase. 

    Do you anticipate any crucial issues with that power rating with 1phase?

    Thanks,

    Alex

  • 0 in reply to Yunsheng Qu
    Expert 2490 points
    UCC28063 also can be used for 4phase??
  • 0 in reply to Mason Noh
    TI__Genius 9790 points

    Hi, Mason

    UCC28063 cannot be used for 4 phase PFC application, since there is no sync function of UCC28063.

    Regards,

    Yunsheng