參數(shù)資料
型號: TPS2480PW
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PDSO20
封裝: GREEN, PLASTIC, TSSOP-20
文件頁數(shù): 33/56頁
文件大?。?/td> 1381K
代理商: TPS2480PW
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
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
≥ VSHUNT_MAX
Max_ShuntVoltage_Before_Overflow = VSHUNT_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 VSHUNT_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)
Copyright 2010, Texas Instruments Incorporated
39
Product Folder Link(s): TPS2480 TPS2481
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