Datasheet

Max_ShuntVoltage=Max_Current_Before_Overflow R´
SHUNT
Max_ShuntVoltage=0.32
MaximumPower=Max_Current_Before_Overflow V´
BUS_MAX
MaximumPower=20.48
Corrected_Full_Scale_Cal=trunc
Cal MeasShuntCurrent
_Current
´
TPS2480/81
Corrected_Full_Scale_Cal=4068
TPS2480
TPS2481
www.ti.com SLUS939B –APRIL 2010–REVISED DECEMBER 2010
Max_Current_Before_Overflow = 0.64 (Note: This result is displayed by software as seen in Figure 26.)
(36)
If Max_ShuntVoltage ≥ V
SHUNT_MAX
Max_ShuntVoltage_Before_Overflow = V
SHUNT_MAX
Else
Max_ShuntVoltage_Before_Overflow= Max_ShuntVoltage
End If
Max_ShuntVoltage_Before_Overflow = 0.32
NOTE
This result is displayed by software as seen in Figure 26.
(Max_ShuntVoltage is greater than V
SHUNT_MAX
in this example.)
8. Compute the maximum power with Equation 37.
(37)
9. (Optional second Calibration step.) Compute corrected full-scale calibration value based on measured
current.
TPS2480/81_Current = 0.0504
MeaShuntCurrent = 0.05006
(38)
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