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TPS23730

現行

具有高效率 DC-DC 控制器的 IEEE 802.3bt Type-3 1-6 類 PoE 2 PD

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產品規格表

TPS23730

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 10.2 Vin (max) (V) 60 PoE current limit (min) (mA) 1550 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 300 PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3 PD power level 13W, 25W, 51W DC/DC control PD and DC/DC Fault response Auto Retry Features Adapter priority, Advanced startup, Automatic MPS, Error amplifier, Inrush delay, Primary-side adapter priority, Primary-side regulation, Second Gate Drive, Spread-spectrum frequency dithering, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
Vin (min) (V) 10.2 Vin (max) (V) 60 PoE current limit (min) (mA) 1550 PoE inrush limit (mA) (typ) (A) 0.14 rDS(on) per FET (typ) (mΩ) 300 PoE standards supported 802.3at Type 1 (802.3af), 802.3at Type 2, 802.3bt Type 3 PD power level 13W, 25W, 51W DC/DC control PD and DC/DC Fault response Auto Retry Features Adapter priority, Advanced startup, Automatic MPS, Error amplifier, Inrush delay, Primary-side adapter priority, Primary-side regulation, Second Gate Drive, Spread-spectrum frequency dithering, Thermal shutdown Operating temperature range (°C) -40 to 125 Rating Catalog
VQFN (RMT) 45 35 mm² 7 x 5
  • Complete IEEE 802.3bt Type 3 (Class 1-6) PoE PD Solution
    • EA Gen 2 logo-ready (PoE 2 PD Controller)
    • Robust 100-V, 0.3-Ω (typ) Hotswap MOSFET
    • Supports power levels for up to 60-W operation
    • Allocated power indicator outputs - parallel or serial encoding selectable
  • Integrated PWM controller for flyback or Active Clamp Forward configuration
    • Flyback control with primary-side regulation
      • Supports CCM operation
      • ±1.5% (typ, 5-V output) load regulation (0-100% load range) — with Sync FET
    • Also supports secondary-side regulation
    • Soft-start control with advanced startup and hiccup mode overload protection
    • Soft-stop shutdown
    • Adjustable frequency with synchronization
    • Programmable frequency dithering for EMI
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust to PSE type and load current with auto-stretch
  • Primary adapter priority input
  • –40°C to 125°C junction temperature range
  • Complete IEEE 802.3bt Type 3 (Class 1-6) PoE PD Solution
    • EA Gen 2 logo-ready (PoE 2 PD Controller)
    • Robust 100-V, 0.3-Ω (typ) Hotswap MOSFET
    • Supports power levels for up to 60-W operation
    • Allocated power indicator outputs - parallel or serial encoding selectable
  • Integrated PWM controller for flyback or Active Clamp Forward configuration
    • Flyback control with primary-side regulation
      • Supports CCM operation
      • ±1.5% (typ, 5-V output) load regulation (0-100% load range) — with Sync FET
    • Also supports secondary-side regulation
    • Soft-start control with advanced startup and hiccup mode overload protection
    • Soft-stop shutdown
    • Adjustable frequency with synchronization
    • Programmable frequency dithering for EMI
  • Automatic Maintain Power Signature (MPS)
    • Auto-adjust to PSE type and load current with auto-stretch
  • Primary adapter priority input
  • –40°C to 125°C junction temperature range

The TPS23730 device combines a Power over Ethernet (PoE) powered device (PD) interface, and a current-mode DC-DC controller optimized for flyback and active clamp forward (ACF) switching regulator designs . In the case of flyback configuration, the use of primary-side regulation (PSR) is supported. The PoE interface supports the IEEE 802.3bt standard for applications needing up to 51 W or less at PD input.

Programmable spread spectrum frequency dithering (SSFD) is provided to minimize the size and cost of EMI filter. Advanced Startup with adjustable soft-start helps to use minimal bias capacitor while simplifying converter startup and hiccup design, also ensuring that IEEE 802.3bt startup requirements are met.

The soft-stop feature minimizes stress on switching power FETs , allowing FET BOM cost reduction.

The PSR feature of the DC-DC controller uses feedback from an auxiliary winding for control of the output voltage, eliminating the need for external shunt regulator and optocoupler. It is optimized for continuous conduction mode (CCM), and can work with secondary side synchronous rectification, resulting in optimum efficiency, regulation accuracy and step load response over multiple outputs.

The DC-DC controller features slope compensation and blanking. Typical switching frequency is 250 kHz.

The automatic MPS enables applications with low power modes or multiple power feeds. It automatically adjusts its pulsed current amplitude and duration according to PSE Type and system conditions, to maintain power while minimizing consumption.

The TPS23730 device combines a Power over Ethernet (PoE) powered device (PD) interface, and a current-mode DC-DC controller optimized for flyback and active clamp forward (ACF) switching regulator designs . In the case of flyback configuration, the use of primary-side regulation (PSR) is supported. The PoE interface supports the IEEE 802.3bt standard for applications needing up to 51 W or less at PD input.

Programmable spread spectrum frequency dithering (SSFD) is provided to minimize the size and cost of EMI filter. Advanced Startup with adjustable soft-start helps to use minimal bias capacitor while simplifying converter startup and hiccup design, also ensuring that IEEE 802.3bt startup requirements are met.

The soft-stop feature minimizes stress on switching power FETs , allowing FET BOM cost reduction.

The PSR feature of the DC-DC controller uses feedback from an auxiliary winding for control of the output voltage, eliminating the need for external shunt regulator and optocoupler. It is optimized for continuous conduction mode (CCM), and can work with secondary side synchronous rectification, resulting in optimum efficiency, regulation accuracy and step load response over multiple outputs.

The DC-DC controller features slope compensation and blanking. Typical switching frequency is 250 kHz.

The automatic MPS enables applications with low power modes or multiple power feeds. It automatically adjusts its pulsed current amplitude and duration according to PSE Type and system conditions, to maintain power while minimizing consumption.
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類型 標題 日期
* Data sheet TPS23730 IEEE 802.3bt Type 3 PoE PD with High Efficiency DC-DC Controller datasheet (Rev. B) PDF | HTML 2020年 11月 25日
EVM User's guide TPS23730EVM-093 Evaluation Module (Rev. B) PDF | HTML 2023年 8月 2日
Application note PoE Powered Devices Layout Review Guide PDF | HTML 2021年 8月 27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
Technical article How to choose your Type 3 (>51-W) PoE power topology PDF | HTML 2020年 12月 8日
Application note Soft-Stop: TPS2373X Feature Explanation PDF | HTML 2020年 10月 27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

TPS23730EVM-093 — 適用於 IEEE802.3bt Type 3 PoE PD 應用的 TPS23730 評估模組

The TPS23730 evaluation module (TPS23730EVM-093) contains evaluation and reference circuitry for the TPS23730, which is a IEEE802.3bt Type 3 PoE PD, EA Gen 2 ready, controller suitable for Type 3 (51W) PoE PD applications.
使用指南: PDF | HTML
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Gerber 檔案

TPS23730EVM-093 Gerber Files (Rev. A)

SLVC805A.ZIP (941 KB)
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

PMP23365 — 具備外部熱插拔及遙測功能的 24V、3A 8 類 PoE PD 參考設計

此參考設計利用 24V 與 3A 輸出實作乙太網路供電 (PoE) 電源裝置 (PD) 主動箝位順向式轉換器。配備整合式脈衝寬度調變器 (PWM) 控制器的 TPS23730 PD 可提供所有必要功能，以實現主動箝位順向式轉換器的 PoE PD 與 PWM 控制。此設計使用二次側調節 (SSR) 和光耦合器回饋。增加外部熱插拔以實現 7 類與 8 類 PD 應用。一次側使用 INA237 來監控 DC/DC 輸入電壓和電流，電源資訊則會由 I2C 隔離器或光耦合器架構電路傳送至二次側。
Test report: PDF
參考設計

PMP23253 — 6 級、PoE、PD、15-V、3.3-A 主動箝位順向轉換器參考設計

此參考設計利用 15-V 與 3.3-A 輸出執行乙太網路供電 (PoE) 電源裝置 (PD) 主動箝位順向轉換器。配備整合式脈衝寬度調變器 (PWM) 控制器的 TPS23730 PD 可提供所有必要功能，以執行主動箝位順向轉換器的 PoE PD 控制與 PWM 控制。此設計使用二次側調節 (SSR) 和光耦合器回饋。
Test report: PDF
參考設計

PMP23287 — 6 級、PoE、PD、24-V、2.5-A 主動箝位順向轉換器參考設計

此參考設計利用 24-V 與 2.5-A 輸出執行乙太網路供電 (PoE) 電源裝置 (PD) 主動箝位順向轉換器。配備整合式脈衝寬度調變器 (PWM) 控制器的 TPS23730 PD 可提供所有必要功能，以執行主動箝位順向式轉換器的 PoE PD 和 PWM控制。此設計使用二次側調節 (SSR) 和光耦合器回饋。
Test report: PDF
參考設計

PMP22477 — 具有輸入電源限制和 PSR 的 6 級 PoE PD 隔離式返馳轉換器 (12 V、3.8 A) 參考設計

此參考設計利用 12-V 與 3.8-A 輸出執行乙太網路供電 (PoE) 電源裝置 (PD) 返馳轉換器。TPS23730 PD 和 PWM 控制器提供所有必要功能，以實作返馳式轉換器的 PoE PD 和 PWM 控制。TPS23730 採用一次側調節 (PSR)，免除對光耦合器回饋的需求。輸入電源限制電路可讓輸出並與第二個轉換器平行，以提升輸出功率能力。
Test report: PDF
參考設計

TIDA-050045 — Type-3 IEEE802.3bt 就緒主動箝位順向轉換器 PoE 供電裝置參考設計

This TI reference design showcases a Type-3, Class 6, 51-W active clamp forward converter for powered devices (PD) through PoE. The TPS23730 PD controller provides detection and classification while also containing a PWM controller. This design takes in a 37-V to 57-V PoE input, and outputs a 5-V (...)
Design guide: PDF
電路圖: PDF
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