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TPS51200: What is the maximum number of DDR4 devices for the current source and sink?

Louie
Expert 3180 points
Part Number: TPS51200
Other Parts Discussed in Thread: TPS53317A

Hello,

Can the TPS51200  handle 10 DDR4 devices for current source and sink?

Thank you,

Louie

  • 0
    TI__Expert 3180 points
    Hello,

    Could you also tell me what the is current for +3.3V power input?

    Thanks in advanced!
    Louie
  • 0
    TI__Mastermind 24075 points

    Hi Louie,

    Different DDR4 devices need different VTT current. Please check DDR datasheet or contact DDR manufacturer for the VTT current information.

    TPS51200 is 3A device. To leave margin, I suggest to keep the current below 2A.

    The VIN current of TPS51200  is only a few mA.

    If you want to support 10 DDR4 devices, probably you need a high current device, like TPS53317A. It is a switching converter supporting 6A.

    Thanks

    Qian