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UCC29950: ACin 110~240V DCout 240V 12A CVCC for battery charger

CHOI SEUNG WON
Expert 1245 points
Part Number: UCC29950
Other Parts Discussed in Thread: UCC28070A, UCC28180, UCC28019A, UCC28950

Dear TI

"ACin 110~240V  DCout 240V 12A CVCC for battery charger"

I would like to recommend parts that can be used for the above design conditions.

I first considered PFC and LLC parts. I would like to recommend parts to consider.

The power stage part can use analog parts and can use a separate digital controller.

Best regards

  • 0
    TI__Mastermind 34465 points

    Hello ,

    Your application is for a 3kW design with a 240V ac max input and a 240V dc output CVCC output

    You will be able to use the UCC29950 in this application. This part was designed for 300W or so applications

    You should consider using the UCC28180, UCC28019A  or the UCC28070A pfc controllers to generate a 400V DC bus.

    The use the UCC28950 phase *** controller to generate 12V output from the 400V DC .

    You will probably require two separate UCC28950 controllers with each controller used in a 1.5kW module.

    The UCC28950's can be synchronized for seamless power control.

    Regards

    John

  • 0 in reply to John Griffin1
    Expert 1245 points

    Dear TI

    Dear John

    Thank you for answer.

    The parts you provided were a great reference.

    I have additional questions. This question assumes that there is no limit on magnetic device design and component selection and there is no limit on product size.

    If ucc28070a is a dual pfc structure, why would it be presented as ucc28180, ucc28019a, which uses a single inductor device for a 3kw design?

    ucc28950 also suggested a parallel structure. Is there any reason? In the case of ucc28950, there is no big problem in particular using one transformer.

    Best regards.

  • 0 in reply to CHOI SEUNG WON
    TI__Mastermind 34465 points

    Hello ,

    If you have a height restriction then you will find that two small inductors can be designed with less height then one large inductor.
    Your 3kW application will require some fairly large inductors so the UCC28070A offers the advantage of lower overall height.
    The same reasoning is true for synchronizing two UCC28950 controllers.

    If you have any further questions then please close this thread and open a new post.

    Regards

    John