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TPS51116: TPS51116 application question

Part Number: TPS51116

Hi Team,

My customer is using our TPS51116, now a new project is coming. They plan to use 1pcs TPS51116 to provide supply for 2 DDRs. For VDDQ and VTTREF, it's no problem. For VTT, However, they want to know how to calculate the sink/source current of DDR from VTT, do we have some related documents or application note or guidelines to show how to calculate the source/sink current from VTT? Thus they could know if 1pcs TPS51116 can provide VTT supply for 2 DDRs?

Similar question is how to know if 1pcs TPS51116 can provide multi DDRs at the same time?

Best regards,

Sulyn