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LMZ36002: Can these devices be run in parallel?

Matthew Odinotski
Prodigy 120 points
Part Number: LMZ36002

1- Can 2 or more LMZ36002 be run in parallel (either to increase load or fault tolerance)?

2- If 2 devices are run in parallel, should the parts be sync'd with clock at 180 degrees? or each part should run independently?

Thanks

  • 0
    TI__Guru 50120 points

    Hi Matthew,

    What is your desired application condition (VIN and VOUT)? The LMZ36002 cannot be ran in parallel because it doesn't have an ISHARE pin. 

    Depending on your package preference there are two options:

    For information on how to run these modules in parallel please take a look at the following TI Collaterals:

    Regards,

    Jimmy 

  • 0 in reply to Jimmy Hua
    Prodigy 120 points
    Hi Jimmy

    1- Parallel output (vout).
    2- the other 2 parts are no good (I need a 60V max input - 12 Cel-lion battery)
    3- Even without the ishare, if the parts are synced, shouldn't they regulate the output (5V in my case). One unit might produce more current than the other, but shouldn't they still work? As soon as one reaches 2Amps, the second unit should start making up the difference.. no?

    Matthew
  • 0 in reply to Matthew Odinotski
    TI__Guru 50120 points
    Hi Matthew,

    Ideally I'd stick with validated power modules that have current sharing capabilities. I was under the assumption that you must have both paths equally share current. The good thing is that this device has a current-mode control topology which is required when designing parallel converters. However to answer your question, yes you can parallel the LMZ36002 to emulate current sharing capabilities.

    Regards,
    Jimmy