• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 63 subscribers
  • Views 261 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.

Original question:

LM25119: Dual Phase not sharing current

LM25119: interleave two phase current uneven issue

Robin Liu
Intellectual 1950 points
Part Number: LM25119

Hi team,

my customer use LM25119, but the two phase current is not balanced, please help.

Vin: 35V;

Vout: 21V Iout: 9A;

the difference of the two phase average current is about 640mA. how our part do the current balance function?

Regards

Robin Liu 

  • 0
    TI__Mastermind 24075 points
    Hi Robin,

    LM25119 is a peak current mode controller which has nature current balance capability.
    Due to sensing resistor tolerance and the variation of input offset of current sense amplifier, there could be slightly imbalance between two phases.
    I don't think the 640mA imbalance will be a problem for customer's system.

    Thanks
    Qian