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TPS62A04AB: VDDAC ripple noise confirmation

Jeff YANG
Mastermind 7785 points
Part Number: TPS62A04AB

Tool/software:

Hi,

Could you help evaluate the feasibility of the simulation: Using TPS62A04BDRLR (circuit configuration as shown in the spec), with input/output of 3.3V/0.825V, and based on the attached current profile, simulate whether the Vout ripple can be within ±1.5% under the condition of <1MHz?

  1. Current profile: Column E - time slot unit = seconds, Column F - 128bit VDDAC unit = A. Please simulate the Vout ripple under the current variations in this column.
  2. Do I need to provide the actual part numbers for the inductor (L) and capacitor (C) ?
  3. Can the number of capacitors be further optimized? What would be the result if Cout = 22uF*2?
  4. If the current profile duration is too short, you can duplicate the current values in Column F (128bit VDDAC) corresponding to the time slot in Column E from 3.00E-08 to 4.00E-08, and append them to the end of the current values in Column F for extension.

DQ+CA_wrl_VDDAC_current_profile.xlsx

Thanks