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Product details

Parameters

Vin (Min) (V) 0 Vin (Max) (V) 57 PoE current limit (Min) (mA) 850 PoE inrush limit (Typ) (mA) 140 rDS(on) per FET (Typ) (mOhms) 420 PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, Non Standard PD power level 13W, 25W, >25W DC/DC control PD Only Fault response Auto Retry Features Thermal Shutdown open-in-new Find other Powered devices

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Powered devices

Features

  • IEEE 802.3at Type-2 Hardware Classification With
    Status Flag
  • Auxiliary Gate Driver for High-Power Expansion
  • Robust 100-V, 0.5-Ω Hotswap MOSFET
  • 1A (Typical) Operating Current Limit
  • 140 mA (Typical) Inrush Current Limit
  • DC-DC Converter Enable
  • 15 kV/8 kV System-level ESD Capability
  • PowerPAD™ HSOP Package
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Description

The TPS2379 device is an 8-pin integrated circuit that contains all of the features needed to implement an IEEE802.3at type-2 powered device (PD) such as Detection, Classification, Type 2 Hardware Classification, and 140-mA inrush current limit during startup. The low 0.5-Ω internal switch resistance, combined with the enhanced thermal dissipation of the PowerPAD package, enables this controller to continuously handle up to 0.85 A. The TPS2379 integrates a low 0.5-Ω internal switch to allow for up to 0.85 A of continuous current through the PD during normal operation. The TPS2379 device supports higher-power applications through an external pass transistor. The TPS2379 contains several protection features such as thermal shutdown, current limit foldback, and a robust 100-V internal switch.

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TPS2373 ACTIVE IEEE 802.3bt PoE high-power PD interface with advanced startup This product is fully compliant to the IEEE 802.3bt standard.

Technical documentation

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Type Title Date
* Data sheet TPS2379 IEEE 802.3at PoE High-Power PD Interface With External Gate Driver datasheet (Rev. A) Jul. 28, 2015
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Lightning Surge Considerations for PoE Powered Devices Apr. 30, 2015
User guide TPS2379EVM-106 Evaluation Module (Rev. A) May 05, 2014
Technical article SLEIGH secrets revealed! Dec. 24, 2013
Technical article Watch your Power over Ethernet OPEX or risk obsolescence! Oct. 09, 2012

Design & development

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

Hardware development

EVALUATION BOARD Download
TPS2379 Evaluation Module
TPS2379EVM-106
document-generic User guide
49
Description
The Texas Instruments TPS2379EVM-106 evaluation module is a fully assembled and tested circuit for evaluating the TPS2379 IEEE 802.3at PoE High-Power PD Interface with External Gate Driver.


In need of IEEE802.3bt compliance? Check out the TPS2373

Features
  • IEEE 802.3at PoE High-Power PD Interface
  • IEEE 802.3at type-2 hardware classification with status flag
  • Gate drive output for external booster FET
  • DC/DC converter enable
  • Robust 100 V, 0.5 ohm hotswap MOSFET with 850mA current limit

Design tools & simulation

SIMULATION MODEL Download
SLVM996A.ZIP (30 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
SLUC480.ZIP (452 KB)

Reference designs

REFERENCE DESIGNS Download
Non-Standard PoE (>25.5W) - High Efficiency Forward Converter (5V@10A) Reference Design
PMP8923 This converter provides a high power PoE output of 5V/10A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (12V@5A) Reference Design
PMP7499 This converter provides a high power PoE output of 12V/5A. The TPS2379 PD controller allows the use of an external hot swap FET for increased efficiency. The UCC2897A PWM controller is used to implement a high efficiency active clamp forward converter.
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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