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電源保護開關與控制器
eFuse（整合式熱插拔）

TPS25947

現行

具有整合式反向極性保護的 2.7V 至 23V、28mΩ、5.5A eFuse

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產品規格表

TPS25947

現行
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產品詳細資料

Vabsmax_cont (V) 28 Vin (max) (V) 23 Vin (min) (V) 2.7 Current limit (max) (A) 6 Current limit (min) (A) 0.5 Features Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Reverse polarity protection, Short-circuit protection, Thermal shutdown UL recognition IEC62368, UL2367 Overcurrent response Circuit breaker, Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 28.3 Overvoltage response Clamp, Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000426 Quiescent current (Iq) (max) (A) 0.00061 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 28 Vin (max) (V) 23 Vin (min) (V) 2.7 Current limit (max) (A) 6 Current limit (min) (A) 0.5 Features Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Reverse polarity protection, Short-circuit protection, Thermal shutdown UL recognition IEC62368, UL2367 Overcurrent response Circuit breaker, Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 28.3 Overvoltage response Clamp, Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000426 Quiescent current (Iq) (max) (A) 0.00061 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
VQFN-HR (RPW) 10 4 mm² (2 mm × 2 mm)
  • Wide operating input voltage range: 2.7V to 23V
    • 28V absolute maximum
    • Withstands negative voltages up to –15V
  • Integrated back-to-back FETs with low on-resistance: RON = 28.3mΩ (typical)
  • Ideal diode operation with true reverse-current blocking
  • Fast overvoltage protection
    • Overvoltage clamp (OVC) with pin-selectable threshold (3.8V, 5.7V, 13.8V) and 5µs (typical) response time OR
    • Adjustable overvoltage lockout (OVLO) with 1.2µs (typical) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit OR circuit-breaker options
    • Adjustable threshold (ILIM) 0.5A to 6A
      • ±10% accuracy for ILIM > 1A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1A)
  • Fast-trip response for short-circuit protection
    • 500ns (typical) response time
    • Adjustable (2 × ILIM) and fixed thresholds
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Digital outputs
    • Priority power MUX control (AUXOFF) and fault indication (FLT) or
    • Power Good indication (PG) with adjustable threshold (PGTH)
  • UL 2367 recognition
    • File No. E339631
    • RILM ≥ 750Ω
  • IEC 62368-1 CB certified
  • Small footprint: QFN 2mm × 2mm, 0.45mm pitch
  • Wide operating input voltage range: 2.7V to 23V
    • 28V absolute maximum
    • Withstands negative voltages up to –15V
  • Integrated back-to-back FETs with low on-resistance: RON = 28.3mΩ (typical)
  • Ideal diode operation with true reverse-current blocking
  • Fast overvoltage protection
    • Overvoltage clamp (OVC) with pin-selectable threshold (3.8V, 5.7V, 13.8V) and 5µs (typical) response time OR
    • Adjustable overvoltage lockout (OVLO) with 1.2µs (typical) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit OR circuit-breaker options
    • Adjustable threshold (ILIM) 0.5A to 6A
      • ±10% accuracy for ILIM > 1A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1A)
  • Fast-trip response for short-circuit protection
    • 500ns (typical) response time
    • Adjustable (2 × ILIM) and fixed thresholds
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Digital outputs
    • Priority power MUX control (AUXOFF) and fault indication (FLT) or
    • Power Good indication (PG) with adjustable threshold (PGTH)
  • UL 2367 recognition
    • File No. E339631
    • RILM ≥ 750Ω
  • IEC 62368-1 CB certified
  • Small footprint: QFN 2mm × 2mm, 0.45mm pitch

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices an excellent choice for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to establish an almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using an external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.

The devices are available in a 2mm × 2mm, 10-pin HotRod™ QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range from –40°C to +125°C.

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices an excellent choice for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to establish an almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using an external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.

The devices are available in a 2mm × 2mm, 10-pin HotRod™ QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range from –40°C to +125°C.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 TPS25947xx, 2.7V to 23V, 5.5A, 28mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection datasheet (Rev. C) PDF | HTML 2026/5/21
應用說明 How eFuse Ensures Integrated FET Operation in Safe Operating Area PDF | HTML 2022/9/7
Application brief Using an eFuse to Meet IEC62368-3 for USB 2.0 and USB 3.1 Power Sourcing Ports PDF | HTML 2022/2/7
證書 TPS25947x UL2367 Certificate of Compliance E169910 2022/1/19
證書 TPS25947x UL2367 Certificate of Compliance E339631 2022/1/18
證書 TPS25947x CB Test Certificate IEC 62368-1 2021/12/8
應用說明 Basics of Power MUX (Rev. A) PDF | HTML 2020/10/20
Application brief Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) PDF | HTML 2020/10/7
Application brief eFuses in Smart Electricity Meters PDF | HTML 2020/9/1

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開發板

TPS25947EVM — TPS25947 eFuse 評估模組

TPS25947EVM eFuse 評估板允許對 TPS25947 eFuse 產品進行參考電路評估。TPS25947xx 裝置是一款 2.7-V 至 23-V、5.5-A eFuse，具有整合 28 mΩ FET 和反向電流防護、輸入反極性防護、過電流、突波電流防護、可調式過電流瞬態消隱定時器、可編程欠電壓與過電壓防護。
使用指南: PDF | HTML
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模擬型號

TPS25947x PSpice Transient Model (Rev. A)

SLVMDJ6A.ZIP (131 KB) - PSpice 模型
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計算工具

SLVRBH5 — TPS25947 Design Calculator

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計算工具

TVS-RECOMMENDATION-CALC — TVS diode recommendation tool

This tool suggests suitable TVS for given system parameters and abs max voltage rating of the device.
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參考設計

TIDA-010231 — 適合光電應用、適用於電弧偵測的類比前端參考設計

此參考設計在光伏系統中實作四通道類比前端進行 DC 電弧偵測，支援高達 tp 1000 V 的 DC 電壓及高達 10 A 的電流。透過分析太陽能面板和逆變器間 DC 電流的 AC 雜訊，即可偵測電弧。在使用 C2000 即時微控制器 (MCU) 完成頻率分析前，訊號會由條件為類比濾波器階段的電流變壓器擷取，並由 16 位元 ADC ADC8363 取樣。此設計相容於不同 C2000 controlCARD，可將 MCU 調整至系統。可以使用 ADS8363 的旁路選項來評估 C2000™MCU 的內部 ADC。C2000 軟體套件可在最新 (...)

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參考設計

TIDA-010239 — AC Level 2 充電器平台參考設計

Electric vehicle supply equipment (EVSE) facilitates power delivery to electric vehicles safely from the grid. An EVSE control system consists of an auxiliary power stage, an off-board AC/DC high-power stage (only in DC charging stations), energy metering unit, AC and DC residual current detector, (...)

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TIDA-01606 — 11-kW、雙向三相三級 (T 型) 逆變器和 PFC 參考設計

此參考設計概述了雙向三階、三相、SiC 式主動前端 (AFE) 逆變器和功率因數校正 (PFC) 階段的實作方式。此設計使用高達 90kHz 的切換頻率和 LCL 輸出濾波器來縮小磁性元件尺寸。達成了 98.6% 的峰值效率。此設計展示如何在 DQ 領域中實作完整的三相 AFE 控制。此雙向轉換器可實現 DC 快速充電及車輛至電網 (V2G) 應用。
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VQFN-HR (RPW) 10 Ultra Librarian
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