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LM5149: Current sharing function with current loop

Godziller
Prodigy 120 points

Part Number: LM5149

Good morning, I'm designing a costant current power supply using the LM5149, I've created a feedback loop using a shunt and OP-AMPs and it works fine in the range 0.5A-10A, i was wondering now if I can parallelize more ICs using the SYNC functionality like if I was using a normal voltage FB or if i need a different approach.

Thank you.

  • 0
    TI__Mastermind 22302 points

    Hello,

    Yes it should be possible, you would just need an external clock generator with 0, 90, and 270 degree phase shift.

    You would synchronize the master to 0 degrees, and then third and fourth phases to 90 and 270 degrees, those two would be configured as secondaries and sharing the COMP.

    Hope this helps,

    -Orlando