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Product details

Parameters

FET External Vin (Min) (V) 9 Vin (Max) (V) 80 Vabsmax_cont (V) 40 Current limit (Min) (A) 0.01 Current limit (Max) (A) 500 UL recognition No Overcurrent response Current Limiting Current limit type Fixed Fault response Latch Off Current limit function enabled Always Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

TSSOP (PW) 20 42 mm² 6.5 x 6.4 open-in-new Find other eFuses & hot swap controllers

Features

  • 9-V to 36-V Input Range, 40 V Abs. Max
  • Current, Voltage and Power Monitor
  • ±0.5% Accurate Current Monitoring
    (225°C < TJ < 85°C)
  • 16 Programmable I2C Addresses
  • Configurable Averaging Options
  • Programmable MOSFET SOA protection
  • High Side Gate Drive for External N-FET
  • Programmable Fault Timer
  • Open-Drain Power-Good Output
  • 20-Pin TSSOP Package
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Description

The TPS2482 and TPS2483 provide hotswap control and precision monitoring for 9-V to 36-V applications. Accurate voltage, current, and power monitoring is provided by a 16-bit A/D converter with a serial interface that is compatible with I2C and SMBus. Voltage and current measurements are interleaved and multiplied internally to provide concurrent power calculations. These devices have high current monitoring accuracy over temperature and a broad load range. This makes them well suited for applications where load identity and health is determined by current profile, such as remote radio heads or cellular antennae.

The hotswap section drives N-channel MOSFETs, with timed inrush and fault-current limiting. Advanced MOSFET safe operating area (SOA) protection is achieved by programmable constant-power foldback and a fixed current limit. This results in an exponential inrush current profile as shown in the start-up figure below. As VOUT ramps up and the VDS of the MOSFET is reduced the current increases keeping MOSFET power dissipation within its SOA at all times. The TPS2482 latches off after a hard fault, while the TPS2483 automatically attempts to restart after a cool-off delay.

The TPS2482 and TPS2483 can be dropped into existing TPS2480 and TPS2481 sockets to provide improved accuracy and operating voltage range. This can be accomplished with no PCB changes and minor software modifications.

While the standard monitoring function is limited to 36 V, with a few external components it is possible to monitor buses as high as 80 V. See special application description in High Voltage Application Example.

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Technical documentation

= Featured
No results found. Please clear your search and try again. View all 7
Type Title Date
* Datasheet 36V Hotswap Controller with Digital Power Monitoring datasheet (Rev. A) Mar. 15, 2013
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016
Selection guides Hot Swap Selection Tool Jul. 28, 2015
User guides EVM User Guide for TPS2482 and TPS2483 Nov. 20, 2012

Design & development

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

Hardware development

EVALUATION BOARDS Download
TPS2483 Evaluation Module
TPS2483EVM-157
document-generic User guide
$99.00
Description
The Texas Instruments TPS2483EVM-157 evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS2483 power-over-Ethernet powered device and DC/DC controller. The EVM contains input and output connectors as well as control jumpers to ease evaluation of device features.
Features
  • 9-V to 36-V Input Range
  • Programmable MOSFET Power Limit
  • I2C™ Monitoring of Current, Voltage and Power
  • 16 Programmable Serial-Bus Addresses
  • Gate Drive for External N-Channel MOSFET
  • Programmable Fault Timer
  • High-Accuracy Current Monitoring
  • Dynamic Calibration
  • Open-Drain Power-Good Output
GUIS FOR EVALUATION MODULES (EVM) Download
SLVC454.ZIP (120904 KB)

Design tools & simulation

CALCULATION TOOLS Download
Free tool: TPS2480/81/90/91/92/93 Design-in Calculator
TPS2480-81-90-91-92-93_CALC — 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 (...)
CALCULATION TOOLS Download
Free tool: TPS2482/TPS2483 Monitoring Accuracy Calculator
TPS2482-3_CALC — The TPS2482-3_CALC can be used to calculate the reporting accuracy of the TPS2482 and TPS2483 hotswap controller with digital power monitoring under user specified circuit conditions.
CALCULATION TOOLS Download
SLVC033J.ZIP (600 KB)
CALCULATION TOOLS Download
SLVC457B.ZIP (94 KB)

CAD/CAE symbols

Package Pins Download
TSSOP (PW) 20 View options

Ordering & quality

Support & training

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Videos

Using eFuses for overvoltage and inrush current protection

Using diodes, MOSFETS, and/or BJTs for input power protection? Watch this quick overview to see why a UL certified eFuse IC might be your best bet.

Posted: 06-Jan-2019
Duration: 02:59

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