• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 33 subscribers
  • Views 481 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.

TPS65982: 5 Cells bat charger from USB PD 20V

Shlomi Yehezkia
Mastermind 6150 points
Part Number: TPS65982
Other Parts Discussed in Thread: BQ24610, TPS65987D

Hi Team,

I would like to design 5 Cells bat charger from USB PD 20V.

Consist on the flowing parts: TPS65982, BQ24610

1: Are these parts remommended for my application.

2: For Prof of consept I need Evaloation boards for both parts

As I have seen in TI Web: TPS65982 EVM Does not have the native hardware to support the 5, 9, 15 and 20V rails. Do you have anather Evaloation board that can help?

Thanks,

Shlomi

5807.TPS65982.docx

  • 0
    TI__Mastermind 36756 points

    Hi Shlomi,

    I would recommend using the TPS65987D for your application as it is our latest PD3.0 controller. The TPS65987EVM supports 5V, 9V, 15V, and 20V rails natively.

    With regards to the BQ device, I would suggest asking a new question with the BQ part number so that team can be notified.

    If this answers your question, PLEASE select This resolved my issue

    Thank you,
    Eric

  • 0 in reply to Eric Beljaars
    Mastermind 6150 points

    Hi Eric,

    My Application: Battery charger that get its power from of the shelf Power USB power PD 20V.

    I shell be only Upstream Facing Port (UFP) device Sink. No need for DRP, The external PS shell be the host.

    Myr aplication deal only with the USB no need to suport the data USB Data signals.

     

    Battery is made of INR18650-25R from Samsung (datasheet attached).

     

     S= series

    P=Parallel

    5S1P

    Chemistry

    Li Ion Samsung

    Cell Model

    INR18650-25R

    Voltage (nominal)

    18V

    Capacity (Nominal)

    2.5Ah 
    (60% at 20A discharge)

    Pack Power [Wh]

    45

    Cycles

    200-250

    Number of cells

    5

    .

     

    Allowed Current are: 0.5A up to 1.25A.

    Cut off current at end of charge is 100mA.

    Pre charge can be 100mA as well.

     

    1. Please Go over my Block Diagram What do you think? 
    2. Do you see any problem to charge 5 Cells of that battary from USB 20V?

     

    Best Regards,

    Shlomi

    130109_INR18650-25R Cell SPEC (3) (1).pdf

     

    Block Diagram 251018.pdf

  • 0 in reply to Shlomi Yehezkia
    TI__Mastermind 36756 points

    Hi Shlomi,

    I can only comment on the TPS65987D portion of your design. In that regard, it looks ok. However, you can use the internal power paths of the TPS65987D. This would remove your external FETs connected to the PD controller and reduce your BOM cost. The internal power path can handle up to 20V @ 5A.

    If this answers your question, PLEASE select This resolved my issue

    Thank you,
    Eric