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TPS2379

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IEEE 802.3at PoE High-Power PD interface with external gate driver

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Data sheet

TPS2379

ACTIVE
Data sheet Order now

Product details

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 Vin (max) (V) 57 Vin (min) (V) 0 PoE current limit (min) (mA) 850 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 420 Features Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 85 Rating Catalog
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 Vin (max) (V) 57 Vin (min) (V) 0 PoE current limit (min) (mA) 850 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 420 Features Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 85 Rating Catalog
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 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
  • 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

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.

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) PDF | HTML 28 Jul 2015
Application note PoE Powered Devices Debug Guidelines PDF | HTML 19 Jul 2021
Application note PoE PD Schematic Review Guidelines PDF | HTML 29 Apr 2021
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Application note Lightning Surge Considerations for PoE Powered Devices 30 Apr 2015

Design & development

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

Evaluation board

TPS2379EVM-106 — TPS2379 Evaluation Module

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

User guide: PDF
Not available on TI.com
Simulation model

TPS2379 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM996A.ZIP (30 KB) - PSpice Model
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Calculation tool

SLUC480 — PoE PD Efficiency Calculator

Supported products & hardware

Supported products & hardware

Products
Powered devices
  • TPS2375 — Class 3 PoE PD with latch protection
  • TPS23750 — Class 3 PoE PD with flyback DC-DC controller
  • TPS23751 — IEEE 802.3at PoE interface with flyback DC-DC controller
  • TPS23752 — IEEE 802.3at PoE interface with flyback DC-DC controller and Sleep Mode Feature
  • TPS23753 — IEEE 802.3-2005 PoE Interface and Isolated Converter and Controller
  • TPS23753A — IEEE 802.3-2005 PoE interface and Isolated Converter controller with Enhanced ESD Ride-Through
  • TPS23754 — IEEE 802.3at, high efficiency, PoE interface and DC/DC controller
  • TPS23754-1 — IEEE 802.3at PoE interface and isolated converter controller
  • TPS23756 — Class 4 PoE PD with flyback/forward DC-DC controller & 12V-57V adapter support
  • TPS23757 — Class 3 PoE PD with flyback/Forward DC-DC controller & 12V-57V Adapter Support
  • TPS2376 — Class 3 PoE PD with adjustable UVLO threshold & latch protection
  • TPS2377 — Class 3 PoE PD with legacy UVLO threshold & latch protection
  • TPS2378 — IEEE 802.3at PoE High-Power PD interface with AUX Control
  • TPS23785B — High-Power, High-Efficiency PoE PD and DC-to-DC Controller
  • TPS2379 — IEEE 802.3at PoE High-Power PD interface with external gate driver
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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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Reference designs

PMP7499 — Non-Standard (>25.5W) PoE - High Efficiency Forward Converter (12V@5A) Reference Design

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.
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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