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TPS2480PW Datasheet(PDF) 50 Page - Texas Instruments

Part # TPS2480PW
Description  Positive Voltage Intelligent Protection Device Hotswap Controller and I2C Current Monitor
PDF  60 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

TPS2480PW Datasheet(HTML) 50 Page - Texas Instruments

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Current=
ShuntVoltage
CalibrationRegister
´
4096
TPS2480
TPS2481
SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
www.ti.com
Current Register 04h (Read-Only)
Full-scale range and LSB depend on the value entered in the Calibration Register. See the TPS2480/81 Power
Measurement Engine section. Negative values are stored in two's complement format.
BIT #
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
BIT
CSIGN
CD14
CD13
CD12
CD11
CD10
CD9
CD8
CD7
CD6
CD5
CD4
CD3
CD2
CD1
CD0
NAME
POR
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VALUE
The value of the Current Register is calculated by multiplying the value in the Shunt Voltage Register with the
value in the Calibration Register according to the equation:
Calibration Register
Calibration Register 05h (Read/Write)
Current and power calibration are set by bits D15 to D1 of the Calibration Register. Note that bit D0 is not used in
the calculation. This register sets the current that corresponds to a full-scale drop across the shunt. Full-scale
range and the LSB of the current and power measurement depend on the value entered in this register. See the
TPS2480/81 Power Measurement Engine section. This register is suitable for use in overall system calibration.
Note that the '0' POR values are all default.
BIT #
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
(1)
BIT
FS15
FS14
FS13
FS12
FS11
FS10
FS9
FS8
FS7
FS6
FS5
FS4
FS3
FS2
FS1
FS0
NAME
POR
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VALUE
(1)
D0 is a void bit and will always be '0'. It is not possible to write a '1' to D0. CALIBRATION is the value stored in D15:D1.
50
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Copyright © 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2480 TPS2481



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