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TPS2480PWR
Positive Voltage, Intelligent Protection Device/Hotswap Controller and I2C Current Monitor
17 15 14kW 13 12 10 16 20 19PROG GND GND A0 A1 TIMER
VREF
SDA
SCL VINP VCC SENSEVINM GATE VOUTmWPGkW
10kW
190kWkW
0.01mF
0.01mFV to26V
3.3Vto5V
TPS2480
TPS2481
www.ti.com SLUS939B –APRIL 2010–REVISED DECEMBER 2010
Positive Voltage Intelligent Protection Device
Hotswap Controller andI2C Current Monitor
Checkfor Samples: TPS2480, TPS2481
1FEATURES DESCRIPTION Programmable FET Power Limit The TPS2480/81 are designedto minimize inrush into
applications and protect both the load and the FET
• External N-Channel FET Gate Drivefrom over-currentor short circuit events. They control
• Programmable Fault Timer an external N-channel MOSFET switch and provide
• Open Drain Power Good Output accurate voltage, current, and power monitoring using
I2C monitoringof Current, Voltage and Power a configurable 12 bit A/D converter via anI2C
interface. The independently adjustable power limit
• High Accuracy Current Monitoring and current limit ensure that the external MOSFET
(1% over temperature) operates within the FET's Safe Operating Area
• Dynamic Calibration (SOA).
9-Vto 26-V Input Range The flexible design includesa Power Good output
which can be used for sequencing as well as load
APPLICATIONS fault indication. An external timer capacitor can set
• Servers the fault time to help immunize the system from
nuisance shutdowns during brief transient events.
• Hard Drives Storage Networks The monitoring circuitry incorporatesa high accuracy
Base Stations A/D converter which canbe configured froma9to13
bit converter. The internal gainof the A/D can be
configuredto scale the current, voltage and power
readingsto the needsof the application. An additional
multiplying register calculates powerin Watts. The2C interface uses multi-level addressingto allow up16 programmable addresses.
Simplified Application Diagram
