TIDA-050026-23882

24-port (PoE 2, 2-pair) power sourcing equipment reference design for multi-port applications ;

TIDA-050026-23882

Design files

Overview

This reference design showcases a Type-3, 30W, 2-Pair 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 30W per port for IEEE 802.3bt Type 3 applications and up to 60W per port for non-standard applications. Based on the MSP430F523x family, TI's TPS2388x FirmPSE system firmware provides a total system level solution for multi-port applications which reduces time to market and frees-up valuable software resources. This design supports port power management with priority, multiple power supplies, legacy PD detection, field upgradability, UART/I2C communication with the host, and more. TI’s FirmPSE system firmware GUI for this design enables the customization of production level PSE system firmware code with just a few clicks of a button and provides real-time communication to the system. In addition, two of these designs may be cascaded through the edge connectors in order to support up to 48-port PSE systems.

The full PoE Evaluation ecosystem includes the following (optional companion tools also listed):

  •  24 Port PoE PSE Evaluation System
    • PSEMTHR24EVM-081: Mother board for 24 Port PoE PSE applications (sold separately)
    • TPS23881EVM-083: TPS23881 daughter card for 24 port Type 3/Type 4 4-Pair (90W) PoE PSE applications (sold separately)
    • TPS23882EVM-084: TPS23882 daughter card for 24 port Type 3 2-Pair (30W) PoE PSE applications (sold separately)
    • PSEMCUDAUEVM-082: MSP430 daughter card for 24 Port PoE PSE applications (sold separately)
    • MSP-FET: Used with PSE system firmware GUI to flash code into MSP430 device (sold separately)
    • USB2ANY Interface Adapter: Used with PSE system software GUI for I2C/UART Interaction with PSEMCUDAU-082 daughter card (sold separately)
    • PSE system software code image
  • TPS2373 Evaluation Module for IEEE 802.3bt PoE PD Applications
  • TPS2372-4EVM Evaluation Module for IEEE 802.3bt PoE PD Applications
  • TPS2372-3 IEEE 802.3bt Type 3 PoE PD Evaluation Module for Lighting

Features
  • Configurable GUI and host interface
  • Multi-port power management
  • Ability to cascade two designs through edge connectors to enable 48-port PSE system
  • Supports multiple power supplies
  • Legacy PD capacitance measurement
Output voltage options TIDA-050026-23882.1
Vin (Min) (V) 44
Vin (Max) (V) 57
Vout (Nom) (V) 48
Iout (Max) (A) 1.25
Output Power (W) 60
Isolated/Non-Isolated Isolated
Input Type DC
Topology POE
Communications equipment
Important note

TI’s FirmPSE System Firmware, GUI, Host Interface Protocol and FirmPSE advisory is available. Request now

TPS23882 product advisory and SRAM firmware update is available. Request now

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDA032.PDF (2285 K)

Reference design overview and verified performance test data

TIDM285.ZIP (1085 K)

Detailed schematic diagram for design layout and components

TIDM286.ZIP (162 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDM287.ZIP (865 K)

Detailed overview of design layout for component placement

TIDM289.ZIP (7222 K)

Files used for 3D models or 2D drawings of IC components

TIDCFO3.ZIP (11011 K)

Design file that contains information on physical board layer of design PCB

TIDM288.ZIP (6836 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

Power sourcing equipment

TPS23882Type-3 2-pair 8-channel PoE PSE controller with SRAM and 200 mΩ Rsense

Data sheet document-pdfAcrobat PDF open-in-new HTML
Boost controllers (external switch)

LM502013-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller

Data sheet document-pdfAcrobat PDF
Current sense amplifiers analog output

INA240-4 to 80V, bidirectional, ultra-precise current sense amplifier with enhanced PWM rejection

Data sheet document-pdfAcrobat PDF open-in-new HTML
Digital isolators

ISO7731Robust EMC, triple-channel, 2/1, reinforced digital isolator

Data sheet document-pdfAcrobat PDF open-in-new HTML
I2C isolators

ISO15412.5-kVrms, isolated unidirectional clock, bidirectional I2C isolator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Ideal diode/ORing controllers

LM5050-15-V to 75-V, 400-uA IQ ideal diode controller

Data sheet document-pdfAcrobat PDF open-in-new HTML
Linear & low-dropout (LDO) regulators

TPS7A400150-mA, 100-V, low-IQ, adjustable low-dropout voltage regulator with enable

Data sheet document-pdfAcrobat PDF open-in-new HTML
MSP430 microcontrollers

MSP430F523425 MHz MCU with 128KB Flash, 8KB SRAM, comparator, DMA, UART/SPI/I2C, timer, HW multiplier

Data sheet document-pdfAcrobat PDF
Series voltage references

REF34252.5-V, low-drift, low-power, small-footprint series voltage reference

Data sheet document-pdfAcrobat PDF open-in-new HTML
Shunt voltage references

TLV4311.5% accuracy, low-voltage, adjustable precision shunt regulator

Data sheet document-pdfAcrobat PDF open-in-new HTML
Supervisor & reset ICs

TPS3890Low-quiescent current 1% accuracy supervisor with programmable delay

Data sheet document-pdfAcrobat PDF open-in-new HTML

Start development

Hardware

Daughter card

PSEMCUDAUEVM-082 — MCU daughter card for 24-port IEEE 802.3bt ready PSE system

PSEMCUDAUEVM-082 is the MSP430 MCU daughter card for TI's 24-port reference designs with the TPS23881 and TPS23882. This board combined with the GUI enables FirmPSE which is TI's production ready system firmware that can deliver system features such as port power management and the use of multiple (...)

In stock
Limit: 2
Evaluation board

PSEMTHR24EVM-081 — Mother board for 24-port IEEE 802.3bt ready PSE system

PSEMTHR24EVM-081 is the base board for the TPS23881 and TPS23882 PSE controllers. This board contains 24 2-Pair / 4-Pair ports that can that can be used to send up to 30W/port for IEEE 802.3at applications and up to 90W/port for IEEE 802.3bt applications.

In stock
Limit: 1
Daughter card

TPS23882EVM-084 — TPS23882 Type-3, 30W, 2-pair, PSE daughter card for 24-port PSE systems

TPS23882EVM-084 is a 24-port (24-channel) daughter card used to evaluate the TPS23882 which is a 2-pair, type-3, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23882 in high port count applications (...)

In stock
Limit: 1
Daughter card

FIRMPSEEVM2P-BDL — TPS23882EVM-084 + PSEMCUDAUEVM-082 + PSEMTHR24EVM-081 bundle

TPS23882EVM-084 is a 24-port (24-channel) daughter card used to evaluate the TPS23882 which is a 2-pair, type-3, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23882 in high port count applications (...)

Technical documentation

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Type Title Date
* Design guide 24-Port (2 pair) Power Sourcing Equipment Ref Design for Multiport Applications Oct. 22, 2019
Application note Choosing PoE PSE System Software Solutions Aug. 03, 2021
Technical article Get more out of your power supply with port power management Nov. 11, 2019
Analog Design Journal Challenges and solutions for PoE systems in Ethernet switches Sep. 30, 2019

Related design resources

Hardware development

EVALUATION BOARD
USB2ANY USB2ANY interface adapter
HARDWARE PROGRAMMING TOOL
MSP-FET MSP MCU Programmer and Debugger

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