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LM2642: Does this chip have automatic current sharing control?

Ray Hsu
Expert 1330 points
Part Number: LM2642


Does this chip have automatic current sharing control?
Two-Phase output connect together
It can automatic current sharing?

  • 0
    TI__Guru**** 191445 points
    LM2642 does not have a dedicated current share function. Dual phase current share is possible because of the high precision accurate current sense of each phase. You must use external current sense resistors and tie the FB1 and FB2 together along with COMP1 and COMP2. This forces both phases to have the same current within the tolerance of the accurate current sense. Also tie the ON/SS1 and ON/SS2 pins together. See page 17 of the data sheet.