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TPS2372

ACTIVE

IEEE 802.3bt PoE high-power PD interface with automatic MPS & autoclass

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Data sheet

TPS2372

ACTIVE
Data sheet Order now

Product details

Vin (min) (V) 8 Vin (max) (V) 57 PoE current limit (min) (mA) 1550, 1900 PoE inrush limit (mA) (typ) (A) 0.2, 0.335, 200, 335 rDS(on) per FET (typ) (mΩ) 100, 300 PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Fault response Auto Retry Features Autoclass, Automatic MPS, Inrush delay, Non-standard POE++ compatible, PG, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Vin (min) (V) 8 Vin (max) (V) 57 PoE current limit (min) (mA) 1550, 1900 PoE inrush limit (mA) (typ) (A) 0.2, 0.335, 200, 335 rDS(on) per FET (typ) (mΩ) 100, 300 PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Fault response Auto Retry Features Autoclass, Automatic MPS, Inrush delay, Non-standard POE++ compatible, PG, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RGW) 20 25 mm² 5 x 5
  • IEEE 802.3bt (Draft) PD Solution for Type 3 or Type 4 PoE
  • Supports Power Levels for Type-4 ( TPS2372-4) 90-W and Type-3 ( TPS2372-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2372-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2372-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • PG Output with Inrush Completion Delay
    • Compliant to PSE Inrush
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust MPS for Type 1-2 or 3-4 PSE
    • Supports Ultra-Low Power Standby Modes
  • Supports Autoclass Operation
  • Supports PoE++ PSE
  • -40°C to 125°C Junction Temperature Range
  • 20-lead VQFN Package
  • IEEE 802.3bt (Draft) PD Solution for Type 3 or Type 4 PoE
  • Supports Power Levels for Type-4 ( TPS2372-4) 90-W and Type-3 ( TPS2372-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2372-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2372-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • PG Output with Inrush Completion Delay
    • Compliant to PSE Inrush
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust MPS for Type 1-2 or 3-4 PSE
    • Supports Ultra-Low Power Standby Modes
  • Supports Autoclass Operation
  • Supports PoE++ PSE
  • -40°C to 125°C Junction Temperature Range
  • 20-lead VQFN Package

The TPS2372 contains all of the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2372-4 and TPS2372-3 to support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

The TPS2372 operates with enhanced features.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2372 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.

The TPS2372 also implements a delay function to allow the remote PSE to complete its inrush phase before releasing the Power Good (PG) output. This ensures that the IEEE802.3bt (draft) startup requirements are met.

The Autoclass enable input also allows advanced system power optimization modes compliant with IEEE802.3bt (draft) standard.

The TPS2372 contains all of the features needed to implement an IEEE802.3at or IEEE802.3bt (draft) (Type 1-4) powered device (PD). The low internal switch resistance allows the TPS2372-4 and TPS2372-3 to support high power applications up to 90 W and 60 W respectively. Assuming 100-meter CAT5 cable, this translates into 71.3 W and 51 W at PD input.

The TPS2372 operates with enhanced features.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2372 automatically generates the necessary pulsed current to maintain the PSE power. An external resistor is used to enable this functionality and to program the MPS pulsed current amplitude.

The TPS2372 also implements a delay function to allow the remote PSE to complete its inrush phase before releasing the Power Good (PG) output. This ensures that the IEEE802.3bt (draft) startup requirements are met.

The Autoclass enable input also allows advanced system power optimization modes compliant with IEEE802.3bt (draft) standard.
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Technical documentation

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Type Title Date
* Data sheet TPS2372 High-Power PoE PD Interface with Automatic MPS and Autoclass datasheet (Rev. B) PDF | HTML 19 Oct 2018
Application note PoE Powered Devices Debug Guidelines PDF | HTML 19 Jul 2021
Application note PoE PD Schematic Review Guidelines PDF | HTML 29 Apr 2021
Application brief How to Identify Allocated Power at PD Through TPH, TPL, and BT Pins PDF | HTML 21 Jul 2020
Technical article Delivering a smooth transition from AC to PoE power PDF | HTML 01 Nov 2018
Technical article Key considerations for designing with the new PoE standard PDF | HTML 16 Jul 2018
Technical article The new PoE standard: It’s almost here PDF | HTML 06 Jun 2018
Technical article Less (standby) power and more light PDF | HTML 10 May 2018
Application note Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 17 Apr 2018
Technical article Would you like a logo to go with your PoE system? PDF | HTML 16 Mar 2018
EVM User's guide TPS2372-3EVM-757 Evaluation Module 22 Dec 2017
EVM User's guide TPS2372-4EVM-006 Evaluation Module (Rev. A) 18 Sep 2017

Design & development

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

Evaluation board

TPS2372-3EVM-757 — TPS2372-3 IEEE802.3bt Type 3 PoE PD Evaluation Module for Lighting Applications

The TPS2372-3EVM-757 evaluation module contains design and reference circuitry for the TPS2372, which is a IEEE802.3bt Type 3 PoE PD controller suitable for high power PoE PD Lighting applications.

In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23881.
User guide: PDF
Not available on TI.com
Evaluation board

TPS2372-4EVM-006 — TPS2372-4EVM evaluation module for IEEE802.3bt PoE PD applications

The TPS2372 evaluation module (TPS2372-4EVM-006) contains evaluation and reference circuitry for the TPS2372, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications such as LED lighting and modules.

In need of an IEEE802.3bt-ready PSE controller? Check out the TPS23880.

User guide: PDF
Not available on TI.com
Gerber file

TPS2372-3EVM-757 Gerber

SLVC707.ZIP (485 KB)
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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

PMP23366 — Dual-input redundant PoE Class 6 PD with smooth transition and telemetry reference design

This design implements a Power over Ethernet (PoE) Class 6 Powered Device (PD) with dual redundant PoE inputs and smooth transition between these inputs and a an auxiliary input. Two TPS2372-3 PD controllers are utilized for high power PoE control up to 51W. A 5V at 9A active clamp forward (...)
Test report: PDF
Reference designs

PMP20859 — Dual-input redundant PoE PD with smooth transition reference design

This reference design implements an IEEE802.3bt (draft) Power over Ethernet (PoE) Powered Device (PD) with dual redundant inputs and a smooth transition between these inputs and an auxiliary input.  The design consists of a 5V/6A synchronous flyback converter and allows for up to three (...)
Test report: PDF
Schematic: PDF
Reference designs

TIDA-01463 — Connected LED Lighting With IEEE802.3bt Power Over Ethernet (PoE) Reference Design

This Power over Ethernet (PoE) reference design supplies power and data over a single Ethernet cable to a connected LED lighting ballast. This reference design uses TI's TPS2372-4 PoE powered device (PD) interface, LM3409 buck controller, LM5165 buck converter, TPS62740 buck converter, (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VQFN (RGW) 20 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

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