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TPS2373

現行

具有進階啟動功能的 IEEE 802.3bt PoE 高功率 PD 介面

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TPS2373

現行
產品規格表 立即訂購

產品詳細資料

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 Adapter priority, Advanced startup, Automatic MPS, Non-standard POE++ compatible, PG, Primary Side Adapter Priority, Primary-side adapter priority, Programmable UVLO, 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 Adapter priority, Advanced startup, Automatic MPS, Non-standard POE++ compatible, PG, Primary Side Adapter Priority, Primary-side adapter priority, Programmable UVLO, 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 ( TPS2373-4) 90-W and Type-3 ( TPS2373-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2373-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2373-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • Advanced Startup for DC-DC
    • Simplifies Downstream DC-DC Design
    • 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
  • Primary Adapter Priority Input
  • 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 ( TPS2373-4) 90-W and Type-3 ( TPS2373-3) 60-W Operation
  • Robust 100 V Hotswap MOSFET
    • TPS2373-4 (typ.): 0.1-Ω, 2.2-A Current Limit
    • TPS2373-3 (typ.): 0.3-Ω, 1.85-A Current Limit
  • Allocated Power Indicator Outputs
  • Advanced Startup for DC-DC
    • Simplifies Downstream DC-DC Design
    • 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
  • Primary Adapter Priority Input
  • Supports PoE++ PSE
  • -40°C to 125°C Junction Temperature Range
  • 20-lead VQFN Package

The TPS2373 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 TPS2373-4 and TPS2373-3 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 TPS2373 operates with enhanced features.

The Advanced Startup function for DC-DC results in a simple, flexible, and minimal system cost solution, while ensuring that IEEE802.3bt (draft) startup requirements are met. It helps to reduce the size of the low voltage bias capacitor considerably. It also allows long DC-DC converter soft-start period and enables the use of a low-voltage PWM controller.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2373 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 TPS2373 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 TPS2373-4 and TPS2373-3 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 TPS2373 operates with enhanced features.

The Advanced Startup function for DC-DC results in a simple, flexible, and minimal system cost solution, while ensuring that IEEE802.3bt (draft) startup requirements are met. It helps to reduce the size of the low voltage bias capacitor considerably. It also allows long DC-DC converter soft-start period and enables the use of a low-voltage PWM controller.

The Automatic MPS function enables applications requiring very low power standby modes. The TPS2373 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.
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類型 標題 日期
* Data sheet TPS2373 High-Power PoE PD Interface with Advanced Startup datasheet (Rev. C) PDF | HTML 2018年 11月 7日
EVM User's guide TPS2373-4EVM-758 Evaluation Module User's Guide (Rev. B) PDF | HTML 2023年 7月 25日
Application note PoE Powered Devices Debug Guidelines PDF | HTML 2021年 7月 19日
Application note PoE PD Schematic Review Guidelines PDF | HTML 2021年 4月 29日
Application brief How to Identify Allocated Power at PD Through TPH, TPL, and BT Pins PDF | HTML 2020年 7月 21日
Technical article The ABCs and 123s of PoE PDF | HTML 2020年 4月 17日
Technical article Delivering a smooth transition from AC to PoE power PDF | HTML 2018年 11月 1日
Technical article The new PoE standard: It’s almost here PDF | HTML 2018年 6月 6日
Technical article Less (standby) power and more light PDF | HTML 2018年 5月 10日
Application note Beyond BT High-Power PoE Solution using the TPS23880 and TPS2372-4 2018年 4月 17日
Technical article Would you like a logo to go with your PoE system? PDF | HTML 2018年 3月 16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

TPS2373-4EVM-758 — 適合 IEEE802.3bt PoE PD 應用的 TPS2373-4 評估模組

The TPS2373 evaluation module (TPS2373-4EVM-758) contains evaluation and reference circuitry for the TPS2373, which is a IEEE802.3bt PoE PD controller suitable for high power PoE PD applications. The EVM is designed with a 5V active clamp forward isolated converter for high efficiency, 70W PD (...)

使用指南: PDF | HTML
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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

PMP21318 — 8 級 PoE 12-V、6-A、供電裝置 (PD) 主動箝位順向式轉換器參考設計

此參考設計具備適用於透過乙太網路供電 (PoE) 供電裝置 (PD) 的 Type-4、8 級、71-W 主動箝位順向轉換器。TPS2373-4 PD 控制器提供偵測和分類，並且透過其進階啟動功能強化 UCC2897A 脈衝寬度調變 (PWM) 控制器。
Test report: PDF
參考設計

PMP20878 — 8 級高功率 PoE 隔離式主動鉗位順向式轉換器 (24V/3A) 參考設計

This reference design is a high power PoE Powered Device (PD) plus active clamp forward converter.  The TPS2373 high power PD controller EVM (TPS2373-4EVM-758) provides all functions necessary to implement an IEEE802.3bt-ready PD.  This is paired up with an active clamp forward converter (...)
Test report: PDF
電路圖: PDF
參考設計

PMP21103 — 具有平穩過渡至輔助設備的 5 類 PoE PD (12 V/2.5 A) 電源參考設計

This reference design implements an IEEE802.3bt compliant Class 5 Power over Ethernet (PoE) Powered Device (PD) with smooth transition between the PoE input and an auxiliary supply connected to the output.  The design consists of a 12-V/2.5-A active clamp forward converter utilizing the (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-050023 — Type-3 IEEE802.3bt 就緒返馳式轉換器 PoE 供電裝置參考設計

This design showcases a low cost, Type-3, Class 6, 51W flyback converter for powered devices through Power over Ethernet. The TPS2373-3 PD controller provides detection and classification while also powering up the LM51551-Q1 PWM controller through its advanced startup feature. This design takes in (...)
Design guide: PDF
電路圖: PDF
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