TI’s FirmPSE System Firmware, GUI, Host Interface Protocol and FirmPSE advisory is available. Request now
TPS23881 product advisory and SRAM firmware update is available. Request nowTIDA-050026-23881
24-port (PoE 2, 4-pair) power sourcing equipment reference design for multi-port applications
TIDA-050026-23881
Overview
This reference design showcases a Type-4 (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications which can send up to 90W per port for for IEEE 802.3bt (PoE 2) applications and up to 120W per port for non-standard applications. Based on the MSP430F523x family, our FirmPSE system software for this design reduces time to market and frees-up valuable software resources by enabling real-time communication with the system and customization of firmware. This design supports power management with priority, multiple power supplies, legacy PD detection, field upgradability, UART/I2C communication with the host, and more. In addition, two of these designs may be cascaded through the edge connectors in order to support up to 48-port PSE systems.
List of Required Hardware
- PSEMTHR24EVM-081: Mother board for 24-port IEEE 802.3bt (PoE 2) ready PSE system
- TPS23881EVM-083: IEEE 802.3bt (PoE 2) ready PSE daughter card for 24-port PSE system
- PSEMCUDAUEVM-082: MSP430 daughter card for 24-port IEEE 802.3bt (PoE 2) ready PSE system
- MSP-FET: Flash tool for flashing FirmPSE app code and BSL code to MSP430
- USB2ANY: Interface adapter to communicate between FirmPSE GUI and MSP430
List of Software to Download
- FirmPSE APP code: PSE system firmware application code
- FirmPSE BSL code: PSE system firmware boot strap loader code
- FirmPSE GUI: TI’s TPS2388x FirmPSE System Software Ecosystem GUI
Step-by-step to getting started:
Step 1: Order hardware
Step 2: Download the software
- Download the FirmPSE application code image, FirmPSE BSL code image and FirmPSE GUI here.
Step 4: Download and review the user guides
- 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applications
- FirmPSE host interface
Hardware design files
- Schematics and block diagrams
- Test data
- Design files (see below)
- CAD/CAE symbols (see below)
- How to Load TPS2388x SRAM and Parity Code Over I2C
- Get more out of your power supply with port power management
- Challenges and solutions for PoE systems in Ethernet switches
E2E Link
Related TI devices
- TPS23881
- TPS23882
- MSP430F5234
- LM5020
- TLV431
- INA240
- REF3425
- LM5050-2
- TPS7A4001
- TPS3890
Features
IEEE 802.3bt (PoE 2, 4-Pair) 24-port Ethernet switch for Power over Ethernet (PoE) applications. NOTE: For 2-Pair application click here.
Off-the shelf, production ready, system software solution (FirmPSE) running on an MSP430.
GUI for easy customization of FirmPSE and for real time communications.
| Output voltage options | TIDA-050026-23881.1 |
|---|---|
| Vin (Min) (V) | 44 |
| Vin (Max) (V) | 57 |
| Vout (Nom) (V) | 48 |
| Iout (Max) (A) | 2.5 |
| Output Power (W) | 120 |
| Isolated/Non-Isolated | Isolated |
| Input Type | DC |
| Topology | POE |
Communications equipment
Design files & products
Design files
Download ready-to-use system files to speed your design process.
SLVUBN3A.PDF (3038 K)
Reference design overview and verified performance test data
TIDM290.ZIP (1309 K)
Detailed schematic diagram for design layout and components
TIDM291.ZIP (158 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDM292.ZIP (1032 K)
Detailed overview of design layout for component placement
TIDM294.ZIP (7518 K)
Files used for 3D models or 2D drawings of IC components
TIDCFO4.ZIP (11941 K)
Design file that contains information on physical board layer of design PCB
TIDM293.ZIP (7647 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430F5234 — 25 MHz MCU with 128KB Flash, 8KB SRAM, comparator, DMA, UART/SPI/I2C, timer, HW multiplier
Data sheet: PDFStart development
Hardware
Daughter card
TPS23881EVM-083 — IEEE 802.3bt ready PSE daughter card for 24-port PSE system
TPS23881EVM-008 is a 24-port (48-channel) daughter card to evaluate the TPS23881 which is a 4-pair, type-4, 8-channel Power-over-Ethernet (PoE) PSE with 200mΩ sense resistor. This daughter card provides evaluation and reference circuitry for the TPS23881 in high port count applications such (...)
Not available on TI.com
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 (...)
Not available on TI.com
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.
Not available on TI.com
Evaluation board
FIRMPSEEVM-BDL — TPS23881EVM-083 + PSEMCUDAUEVM-082 + PSEMTHR24EVM-081 bundle
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.
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Design guide | 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applic (Rev. A) | Oct. 15, 2019 | |
| Application brief | Choosing PoE PSE System Software Solutions | PDF | HTML | Aug. 03, 2021 | |
| Technical article | Get more out of your power supply with port power management | PDF | HTML | Nov. 11, 2019 | |
| Analog Design Journal | Challenges and solutions for PoE systems in Ethernet switches | Sep. 30, 2019 |
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