5.2 DDR4

The PolarFire Evaluation Kit board has a current sense resistor (R222) for 1.2V power rail. Measure the voltage across the R222 using test points TP132 and TP133 and use the following equations to get the DDR4 power. This measurement includes PolarFire DDR4 IO power consumption and actual Micron DDR4 memory power consumption.

Current (mA) = $\frac{Measurevoltage\left(mV\right)}{R}$

Power (mW) = Current × Voltage

While running the demo, the measured voltage across R222 is 2.4 mV and resistor value is 0.01Ω.

Current (mA) = 2.4 ÷ 0.01 = 240 mA 
Power = 240 × 1.2 = 288 MW