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TPS2481

ACTIVE

9-V to 80-V hot swap controller with I2C current monitor and Auto Retry

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Data sheet

TPS2481

ACTIVE
Data sheet Order now

Product details

FET External Vin (min) (V) 9 Vin (max) (V) 80 Vabsmax_cont (V) 26 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response Circuit breaker, current limiting Fault response Auto-retry Soft start Adjustable Features Current monitoring, Fault output, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Power good signal, Short circuit protection
FET External Vin (min) (V) 9 Vin (max) (V) 80 Vabsmax_cont (V) 26 Current limit (min) (A) 0.01 Current limit (max) (A) 500 Overcurrent response Circuit breaker, current limiting Fault response Auto-retry Soft start Adjustable Features Current monitoring, Fault output, Power good signal Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125 Function Adjustable current limit, Current monitoring, Inrush current control, Power good signal, Short circuit protection
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Programmable FET Power Limit
  • External N-Channel FET Gate Drive
  • Programmable Fault Timer
  • Open Drain Power Good Output
  • I2C monitoring of Current, Voltage and Power
  • High Accuracy Current Monitoring
    (1% over temperature)
  • Dynamic Calibration
  • 9-V to 26-V Input Range
  • APPLICATIONS
    • Servers
    • Hard Drives
    • Storage Networks
    • Base Stations
  • Programmable FET Power Limit
  • External N-Channel FET Gate Drive
  • Programmable Fault Timer
  • Open Drain Power Good Output
  • I2C monitoring of Current, Voltage and Power
  • High Accuracy Current Monitoring
    (1% over temperature)
  • Dynamic Calibration
  • 9-V to 26-V Input Range
  • APPLICATIONS
    • Servers
    • Hard Drives
    • Storage Networks
    • Base Stations

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.
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Technical documentation

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Type Title Date
* Data sheet Positive Voltage Hotswap Controller and I2C Current Monitor datasheet (Rev. B) 29 Oct 2010
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Selection guide Hot Swap Selection Tool 28 Jul 2015
EVM User's guide TPS2480 and TPS2481 Evaluation Module User's Guide (Rev. A) 18 Jun 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

GUI for evaluation module (EVM)

SLUC167 — TPS2480 and TPS2481 GUI File

Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
TPS2480 — 9-V to 80-V hot swap controller with I2C current monitor and latch off TPS2481 — 9-V to 80-V hot swap controller with I2C current monitor and Auto Retry
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Calculation tool

TPS2480-81-90-91-92-93_CALC — TPS249x8x Design Calculator Rev B

Simply enter the input voltage, the output current, the output capacitance, and other application specifications into this spreadsheet calculator and the values of the required external components for TPS2480, TPS2481, TPS2490, TPS2491, TPS2492 or TPS2493, such as the sense resistance, the Timer (...)
Supported products & hardware

Supported products & hardware

Products
eFuses & hot swap controllers
TPS2480 — 9-V to 80-V hot swap controller with I2C current monitor and latch off TPS2481 — 9-V to 80-V hot swap controller with I2C current monitor and Auto Retry TPS2482 — 9-V to 80-V hot swap controller with digital powermonitoring and latch off TPS2483 — 9-V to 80-V hot swap controller with digital powermonitoring and Auto Retry TPS2490 — 9-V to 80-V hot swap controller with power limiting and latch off TPS2491 — 9-V to 80-V hot swap controller with power limiting and Auto Retry TPS2492 — 9-V to 80-V hot swap controller with power limiting, latch off and analog current monitor TPS2493 — 9-V to 80-V hot swap controller with power limiting, Auto Retry and analog current monitor
Hardware development
Evaluation board
TPS2483EVM-157 — TPS2483 Evaluation Module
Software
Calculation tool
TPS2480-81-90-91-92-93_CALC — Free tool: TPS2480/81/90/91/92/93 Design-in Calculator
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Calculation tool

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
Supported products & hardware

Supported products & hardware

This design resource supports most products in these categories.

Check the product details page to verify support.
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TSSOP (PW) 20 Ultra Librarian
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