Datasheet

Max_Current=Current_LSB 32767´
Max_Current=0.06226
Max_ShuntVoltage=Max_Current_Before_Overflow R´
SHUNT
Max_ShuntVoltage=0.3113
MaximumPower=Max_Current_Before_Overflow V´
BUS_MAX
MaximumPower=1.992
Corrected_Full_Scale_Cal=trunc
Cal MeasShuntCurrent
TMP513_Current
´
Corrected_Full_Scale_Cal=3462
TMP512
TMP513
SBOS491A –JUNE 2010– REVISED MAY 2011 www.ti.com
7. Compute the maximum current and shunt voltage values (before overflow), as shown by Equation 20 and
Equation 21. Note that both Equation 20 and Equation 21 involve an If - then condition.
(20)
If Max_Current ≥ MaxPossible_I then
Max_Current_Before_Overflow = MaxPossible_I
Else
Max_Current_Before_Overflow = Max_Current
End If
(Note that Max_Current is less than MaxPossible_I in this example.)
Max_Current_Before_Overflow = 0.06226
(21)
If Max_ShuntVoltage ≥ V
SHUNT_MAX
Max_ShuntVoltage_Before_Overflow = V
SHUNT_MAX
Else
Max_ShuntVoltage_Before_Overflow= Max_ShuntVoltage
End If
(Note that Max_ShuntVoltage is less than V
SHUNT_MAX
in this example.)
Max_ShuntVoltage_Before_Overflow = 0.3113
8. Compute the maximum power with Equation 22.
(22)
9. (Optional second calibration step.) Compute the corrected full-scale calibration value based on measured
current.
TMP513_Current = 0.06226
MeaShuntCurrent = 0.05
(23)
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