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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

PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Vin (max) (V) 57 Vin (min) (V) 8 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 Features Autoclass, Automatic MPS, Inrush delay, Non-standard POE++ compatible, PG, Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 125 Rating Catalog
PoE standards supported 802.3bt Type 3, 802.3bt Type 4 PD power level 13W, 25W, 51W, 71W DC/DC control PD Only Vin (max) (V) 57 Vin (min) (V) 8 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 Features Autoclass, Automatic MPS, Inrush delay, Non-standard POE++ compatible, PG, Thermal shutdown Fault response Auto Retry Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RGW) 20 25 mm² (5 mm × 5 mm)
  • 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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Top documentation Type Title Format options Date
* Data sheet TPS2372 High-Power PoE PD Interface with Automatic MPS and Autoclass datasheet (Rev. B) PDF | HTML Oct 19, 2018
Application note PoE Powered Devices Debug Guidelines PDF | HTML Jul 19, 2021
Application note PoE PD Schematic Review Guidelines PDF | HTML Apr 29, 2021
Application brief How to Identify Allocated Power at PD Through TPH, TPL, and BT Pins PDF | HTML Jul 21, 2020
Technical article Delivering a smooth transition from AC to PoE power PDF | HTML Nov 1, 2018
Technical article Key considerations for designing with the new PoE standard PDF | HTML Jul 16, 2018
Technical article The new PoE standard: It’s almost here PDF | HTML Jun 6, 2018
Technical article Less (standby) power and more light PDF | HTML May 10, 2018
Application note Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 Apr 17, 2018
Technical article Would you like a logo to go with your PoE system? PDF | HTML Mar 16, 2018

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
Supported products & hardware
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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
Supported products & hardware
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Reference design

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 (...)
Supported products & hardware
Reference design

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 (...)

Supported products & hardware
Reference design

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, (...)
Supported products & hardware
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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