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TPS23881

現行

具 200mΩ RSENSE 的 4 對 Type-4、8 通道 PoE PSE

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產品規格表

TPS23881

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3, 802.3bt Type 4 FET External MPS method DC Disconnect Pair control 2-Pair Alt A, 4-Pair Operating temperature range (°C) -40 to 125 Features Auto Mode, Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable PCUT, Programmable Port Power Limiting, SRAM Programmable Number of PSE ports 8 Rating Catalog
Vin (min) (V) 44 Vin (max) (V) 57 ILIM Programmable PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3, 802.3bt Type 4 FET External MPS method DC Disconnect Pair control 2-Pair Alt A, 4-Pair Operating temperature range (°C) -40 to 125 Features Auto Mode, Current Limit with Foldback, Fast shutdown, Multi Level Port Priority, Over Current Reporting, Over Temp Reporting, Port remapping, Programmable PCUT, Programmable Port Power Limiting, SRAM Programmable Number of PSE ports 8 Rating Catalog
VQFN (RTQ) 56 64 mm² 8 x 8
  • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications
  • Eight independent PSE channels
  • Compatible with TI’s FirmPSE system firmware
  • SRAM Programmable memory
  • Programmable power limiting accuracy ±2.5%
  • 200-mΩ current sense resistor
  • Legacy PD capacitance measurement
  • Selectable 2-pair or 4-pair port power allocations
    • 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
  • Single and dual signature PD compatibility
  • Dedicated 14-bit integrating current ADC per port
    • Noise immune MPS for DC disconnect
    • 2% current sensing accuracy
  • 1- or 3-bit fast port shutdown input
  • Auto-class discovery and power measurement
  • Inrush and operational foldback protection
  • Flexible processor controlled operating modes
    • Auto, semi auto and manual / diagnostic
  • Per port voltage monitoring and telemetry
  • –40°C to +125°C temperature operation
  • Ultra Low Alpha (ULA) packaging (TPS23881A)
  • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications
  • Eight independent PSE channels
  • Compatible with TI’s FirmPSE system firmware
  • SRAM Programmable memory
  • Programmable power limiting accuracy ±2.5%
  • 200-mΩ current sense resistor
  • Legacy PD capacitance measurement
  • Selectable 2-pair or 4-pair port power allocations
    • 15.4 W, 30 W, 45 W, 60 W, 75 W or 90 W
  • Single and dual signature PD compatibility
  • Dedicated 14-bit integrating current ADC per port
    • Noise immune MPS for DC disconnect
    • 2% current sensing accuracy
  • 1- or 3-bit fast port shutdown input
  • Auto-class discovery and power measurement
  • Inrush and operational foldback protection
  • Flexible processor controlled operating modes
    • Auto, semi auto and manual / diagnostic
  • Per port voltage monitoring and telemetry
  • –40°C to +125°C temperature operation
  • Ultra Low Alpha (ULA) packaging (TPS23881A)

The TPS23881 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.

The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’s FirmPSE system firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.

Programmable SRAM enables in-field firmware upgradability over I 2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements. 

The TPS23881 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.

The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’s FirmPSE system firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.

Programmable SRAM enables in-field firmware upgradability over I 2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements. 
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TPS23882B 現行 具自主模式、SRAM 和 200-mΩ RSENSE 的 Type-3 雙對 8 通道 PoE PSE 控制器 Pin-to-pin for <30 W IEEE 802.3bt Type 3

技術文件

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類型 標題 日期
* Data sheet TPS23881 Type-4 4-Pair 8-Channel PoE 2 PSE Controller with SRAM and 200 mΩ RSENSE datasheet (Rev. E) PDF | HTML 2023年 5月 16日
Application brief How to Load TPS2388x SRAM and Parity Code Over I2C (Rev. E) PDF | HTML 2023年 4月 20日
Application brief Choosing PoE PSE System Software Solutions PDF | HTML 2021年 8月 3日
Test report TPS23881 PoE2 Test Report 2020年 5月 26日
Technical article The ABCs and 123s of PoE PDF | HTML 2020年 4月 17日
Technical article Get more out of your power supply with port power management PDF | HTML 2019年 11月 11日
Design guide 24-Port (4 Pair) Power Sourcing Equipment Reference Design for Multi-port Applic (Rev. A) 2019年 10月 15日
Analog Design Journal Challenges and solutions for PoE systems in Ethernet switches 2019年 9月 30日
EVM User's guide TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module (Rev. A) 2019年 8月 8日
EVM User's guide TPS23881EVM: PoE, PSE, TPS23881 Evaluation Module 2019年 4月 24日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

PSEMTHR24EVM-081 — 適用於 24 埠 IEEE 802.3bt 就緒 PSE 系統的主機板

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.

檢視選項
子卡

PSEMCUDAUEVM-082 — 適用於 24 埠 IEEE 802.3bt 就緒 PSE 系統的 MCU 子卡

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 (...)

TI.com 無法提供
子卡

TPS23881EVM-008 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS23881 子卡

TPS23881EVM-008 is the 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 which is suitable for high power PSE applications such as (...)

使用指南: PDF
TI.com 無法提供
子卡

TPS23881EVM-083 — 適用於 24 埠 PSE 系統的 IEEE 802.3bt 就緒 PSE 子卡

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 (...)

TI.com 無法提供
開發套件

BOOST-PSEMTHR-007 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS2388x 主機板

BOOST-PSEMTHR-007 is the base board for the TPS23880 and TPS23881 PSE controllers. This board contains four 2-pair ports that can be used to send up to 30W/port for IEEE 802.3at applications and two 4-pair ports that can be used to send up to 90W/port for IEEE 802.3bt applications.

使用指南: PDF
TI.com 無法提供
程式碼範例或展示

SLVC771 — TPS23881 PoE MSP430 Reference Code for Basic Application

支援產品和硬體

支援產品和硬體

產品
供電設備
TPS23881 — 具 200mΩ RSENSE 的 4 對 Type-4、8 通道 PoE PSE
硬體開發
開發套件
BOOST-PSEMTHR-007 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS2388x 主機板
下載
開發模組 (EVM) 的 GUI

SLVC772 — TPS2388x EVM GUI

lock = 需要匯出核准 (1 分鐘)
支援產品和硬體

支援產品和硬體

產品
供電設備
TPS23880 — 具有可編程 SRAM 的 4 對 Type-4、8 通道 PoE PSE TPS23881 — 具 200mΩ RSENSE 的 4 對 Type-4、8 通道 PoE PSE TPS23882 — 具有 SRAM 和 200mΩ RSENSE 的 Type-3、雙對 8 通道 PoE PSE 控制器 TPS23882B — 具自主模式、SRAM 和 200-mΩ RSENSE 的 Type-3 雙對 8 通道 PoE PSE 控制器
硬體開發
開發板
BOOST-PSEMTHR8-097 — TPS23882 Type-3、30W、2 對、PSE 主機板 (用於 8 埠 PSE 系統)
子卡
TPS23880EVM-008 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS23880 EVM 子卡 TPS23881EVM-008 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS23881 子卡 TPS23882B1EVM-008 — TPS23882B 子卡 type-3、30-W、雙對、八埠系統 PSE TPS23882EVM-008 — TPS23882 Type-3、30W、2 對、PSE 子板 (用於 8 埠 PSE 系統)
開發套件
BOOST-PSEMTHR-007 — 適合 IEEE 802.3bt 就緒 PoE PSE 應用的 TPS2388x 主機板
lock 下載
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

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 (...)
要求
參考設計

TIDA-050026-23881 — 適合多埠應用的 24 埠 (PoE 2、4 對) 電源設備參考設計

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 (...)
Design guide: PDF
電路圖: PDF
封裝 引腳 下載
VQFN (RTQ) 56 檢視選項
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