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電源保護開關與控制器
eFuse（整合式熱插拔）

TPS25944L

現行

具有反向電流阻斷功能的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse

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產品規格表

TPS25944L

現行
產品規格表 立即訂購

產品詳細資料

Vabsmax_cont (V) 20 Vin (max) (V) 18 Vin (min) (V) 2.7 Current limit (max) (A) 5.2 Current limit (min) (A) 0.6 Features Adjustable current limit, Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Short-circuit protection UL recognition UL2367, UL60950 Overcurrent response Circuit breaker Fault response Latch-off Ron (typ) (mΩ) 42 Overvoltage response Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000199 Quiescent current (Iq) (max) (A) 0.00026 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85
Vabsmax_cont (V) 20 Vin (max) (V) 18 Vin (min) (V) 2.7 Current limit (max) (A) 5.2 Current limit (min) (A) 0.6 Features Adjustable current limit, Adjustable soft start, Current monitoring, Fault output, Overcurrent protection, Overvoltage protection, Power good signal, Reverse current blocking always, Short-circuit protection UL recognition UL2367, UL60950 Overcurrent response Circuit breaker Fault response Latch-off Ron (typ) (mΩ) 42 Overvoltage response Cut-off Rating Catalog Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.000199 Quiescent current (Iq) (max) (A) 0.00026 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85
WQFN (RVC) 20 12 mm² (4 mm × 3 mm)
  • 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
  • 42-mΩ RON (Typical)
  • 0.6 A to 5.3 A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • 200-µA Operating IQ (Typical)
  • 15-µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Thresholds
  • Reverse Current Blocking
  • 1-µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • Two Overcurrent Fault Response Options
    • TPS25942: I(LIMIT) with Thermal Shutdown
    • TPS25944: 4 ms Fault Timer then Shutoff
  • –40°C to +125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A Maximum)
  • UL60950 Safe during Single Point Failure
    • Open-Short ILIM detection
  • 2.7 V to 18 V Operating Voltage, 20 V (Maximum)
  • 42-mΩ RON (Typical)
  • 0.6 A to 5.3 A Adjustable Current Limit (±8%)
  • IMON Current Indicator Output (±8%)
  • 200-µA Operating IQ (Typical)
  • 15-µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Thresholds
  • Reverse Current Blocking
  • 1-µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • Two Overcurrent Fault Response Options
    • TPS25942: I(LIMIT) with Thermal Shutdown
    • TPS25944: 4 ms Fault Timer then Shutoff
  • –40°C to +125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A Maximum)
  • UL60950 Safe during Single Point Failure
    • Open-Short ILIM detection

The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.

Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.

The TPS25942, TPS25944 monitor V(IN) and V(OUT) to provide true reverse blocking from output when V(IN) < (V(OUT) – 10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.

The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.

Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.

The TPS25942, TPS25944 monitor V(IN) and V(OUT) to provide true reverse blocking from output when V(IN) < (V(OUT) – 10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.

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技術文件

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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 TPS25942x/44x 2.7 V-18 V, 5-A eFuse Power MUX With Multiple Protection Modes datasheet (Rev. D) PDF | HTML 2017/11/1
證書 TPS2594x UL Certificate of Compliance UL 2367 2020/4/10
功能安全資訊 eFuse: Safety Certification and why it Matters 2020/3/18
電子書 11 Ways to Protect Your Power Path 2019/7/3
應用說明 Basics of eFuses (Rev. A) 2018/4/5
技術文章 eFuses: clamping and cutoff and auto retry, oh my! – part 3/3 PDF | HTML 2016/6/2
技術文章 eFuses: clamping and cutoff and auto retry, oh my! – part 2/3 PDF | HTML 2016/5/26

設計與開發

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開發板

TPS25942EVM-635 — 適用於 TPS25942x 的 TPS25942EVM-635 評估模組

TPS25942XEVM-635 是一款運作範圍從 2.7V 到 18V 的電子保險絲（具備 ENBLKb 的限流器），並整合了背對背 FET，具備可程式化欠壓、過壓、反向電壓、過流與湧浪電流保護功能。它還在小型的 3x4-mm 20 接腳 QFN 封裝中包含類比電流監控功能。在熱插拔期間，該裝置會限制湧浪電流，且輸出斜坡率可透過 dVdT 接腳上的單一電容器進行設定。

使用指南: PDF
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模擬型號

TPS25944L Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAA6C.ZIP (86 KB) - PSpice 模型
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計算工具

SLVC571 — TPS2594x Design Calculation Tool

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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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封裝 針腳 CAD 符號、佔位空間與 3D 模型
WQFN (RVC) 20 Ultra Librarian
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