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UCC39002: Parallel operation of battery charger power supplies with different current rating- Leader module

Mani Thundiyil
Prodigy 40 points
Part Number: UCC39002

Tool/software:

I would like to design a battery charger and I would like to have the following features:
1. Parallel connection of DC to DC converters of different power rating
2. Charger voltage should be varied from 21 V to 29 V
3. Charging current must be able to share as per the capacity of the DC- DC  module
4. One selected unit to act as leader module so that it can act as the charging controller ( CC and CV Operation).

Please suggest how these features can be added by using UCC39002. 

Thanks,

-Mani

  • 0
    TI__Guru 50090 points

    Hi Mani,

    I am not sure that the UCC39002 can do this. It is designed to force sharing between two or more similarly rated power supplies. 

    For what you are trying to do with sharing two dissimilar supplies my be best handled with an OR-ing controller. 

    If I have misinterpreted what you are trying to achieve, please clarify maybe with a block diagram?

    I hope this answers your question.