TPS2480 Series

9-V to 80-V hot swap controller with I2C current monitor and latch off

Catalog

9-V to 80-V hot swap controller with I2C current monitor and latch off

Part	Programmable Features	Features	Current - Supply	Supplier Device Package	Applications	Type	Internal Switch(s)	Voltage - Supply [Min]	Voltage - Supply [Max]	Package / Case [y]	Package / Case	Package / Case [x]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Number of Channels
Texas Instruments TPS2480PWR	Current Limit Fault Timeout	I2C Latched Fault UVLO	1 mA	20-TSSOP	General Purpose	Hot Swap Controller Monitor		9 V	80 V	4.4 mm	20-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	1
Texas Instruments TPS2480PW	Current Limit Fault Timeout	I2C Latched Fault UVLO	1 mA	20-TSSOP	General Purpose	Hot Swap Controller Monitor		9 V	80 V	4.4 mm	20-TSSOP	0.173 in	125 °C	-40 °C	Surface Mount	1

Catalog

9-V to 80-V hot swap controller with I2C current monitor and latch off

Key Features

• Programmable FET Power LimitExternal N-Channel FET Gate DriveProgrammable Fault TimerOpen Drain Power Good OutputI2C monitoring of Current, Voltage and PowerHigh Accuracy Current Monitoring(1% over temperature)Dynamic Calibration9-V to 26-V Input RangeAPPLICATIONSServersHard DrivesStorage NetworksBase StationsProgrammable FET Power LimitExternal N-Channel FET Gate DriveProgrammable Fault TimerOpen Drain Power Good OutputI2C monitoring of Current, Voltage and PowerHigh Accuracy Current Monitoring(1% over temperature)Dynamic Calibration9-V to 26-V Input RangeAPPLICATIONSServersHard DrivesStorage NetworksBase Stations

Description

The TPS2480/81 are designed to minimize inrush into applications and protect both the load and the FET from over-current or short circuit events. They control an external N-channel MOSFET switch and provide accurate voltage, current, and power monitoring using a configurable 12 bit A/D converter via an I2C interface. The independently adjustable power limit and current limit ensure that the external MOSFET operates within the FET’s Safe Operating Area (SOA). The flexible design includes a Power Good output which can be used for sequencing as well as load fault indication. An external timer capacitor can set the fault time to help immunize the system from nuisance shutdowns during brief transient events. The monitoring circuitry incorporates a high accuracy A/D converter which can be configured from a 9 to 13 bit converter. The internal gain of the A/D can be configured to scale the current, voltage and power readings to the needs of the application. An additional multiplying register calculates power in Watts. The I2C interface uses multi-level addressing to allow up to 16 programmable addresses. The TPS2480 and TPS2481 monitors shunts on buses that can vary from 9 V to 26 V and with a few external components it is possible to monitor buses as high as 80 V. The monitoring circuitry uses a single 3-V to 5.5-V supply, drawing a maximum of 1 mA of supply current. The TPS2480/81 are designed to minimize inrush into applications and protect both the load and the FET from over-current or short circuit events. They control an external N-channel MOSFET switch and provide accurate voltage, current, and power monitoring using a configurable 12 bit A/D converter via an I2C interface. The independently adjustable power limit and current limit ensure that the external MOSFET operates within the FET’s Safe Operating Area (SOA). The flexible design includes a Power Good output which can be used for sequencing as well as load fault indication. An external timer capacitor can set the fault time to help immunize the system from nuisance shutdowns during brief transient events. The monitoring circuitry incorporates a high accuracy A/D converter which can be configured from a 9 to 13 bit converter. The internal gain of the A/D can be configured to scale the current, voltage and power readings to the needs of the application. An additional multiplying register calculates power in Watts. The I2C interface uses multi-level addressing to allow up to 16 programmable addresses. The TPS2480 and TPS2481 monitors shunts on buses that can vary from 9 V to 26 V and with a few external components it is possible to monitor buses as high as 80 V. The monitoring circuitry uses a single 3-V to 5.5-V supply, drawing a maximum of 1 mA of supply current.