• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 33 subscribers
  • Views 300 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.

TPS25830-Q1: How to design circuit of TPS25830.

Jeongtae Park
Prodigy 50 points
Part Number: TPS25830-Q1
Other Parts Discussed in Thread: CSD85312Q3E

Dears,

I have some questions.

In order to limit of current for VBUS, I should add to option circuits.(FETs)

-> would you like to recommend FETs for option circuit?

-> Should I use  FETs for LS_GD? If I apply one FET into LS_GD, how is the problem?

In order to sensing of current, I should use Rsns for current limit setting.

-> Would you like to recommend resister for Rsns?

If I don't use pins of DM and DP, how to design circuit?

Please help for this.

Thanks.

  • 0
    TI__Expert 8420 points

    Hi Park,

    We have use TI back to back FET for the design, you can refer to CSD85312Q3E . 

    There are different application for the external FET you can refer to attached file.  If you don't use the external FET you can use the Buck average current limit function feature. The detail you can see the datasheet Page28(Without external MOSFETs).

    I don't know your design max output current , If for type C design we suggest you choose 15mR for Rsns. 

    If you don't need DP/M in your design , just let it floating. PSIL040E1(001)_Sch.pdf

    1586.TPS25830-Fet_ (2).pdf