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電源管理
電源保護開關與控制器
eFuse（整合式熱插拔）

TPS25940-Q1

現行

具有電流監控與電池短路保護功能的 2.7-V 至 18-V、42mΩ、0.6-5.3A 汽車 eFuse

立即訂購
產品規格表

TPS25940-Q1

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) 5.3 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, Thermal shutdown Overcurrent response Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 42 Overvoltage response Cut-off Rating Automotive Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.00014 Quiescent current (Iq) (max) (A) 0.00027 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
Vabsmax_cont (V) 20 Vin (max) (V) 18 Vin (min) (V) 2.7 Current limit (max) (A) 5.3 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, Thermal shutdown Overcurrent response Current limiting Fault response Auto-retry, Latch-off Ron (typ) (mΩ) 42 Overvoltage response Cut-off Rating Automotive Soft start Adjustable Quiescent current (Iq) (typ) (A) 0.00014 Quiescent current (Iq) (max) (A) 0.00027 Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 125
WQFN (RVC) 20 12 mm² (4 mm × 3 mm)
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • 2.7-V to 18-V operating voltage, 20 V (maximum)
  • Total RON: 42 mΩ (typical)
  • 0.6-A to 5.3-A adjustable current limit (±8%)
  • IMON Current indicator output
    • ±8% accuracy for TPS25940-Q1/TPS25940L-Q1
  • Adjustable under-, overvoltage threshold (±2%)
  • Reverse current blocking
  • 1-µs reverse voltage shutoff
  • Programmable dVo/dt control
  • Power good and fault outputs
  • Short-to-battery protection
  • Short-to-ground protection
  • TPS25940-Q1/TPS259401A-Q1: auto-retry
  • TPS25940L-Q1: latch-off
  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C5
  • 2.7-V to 18-V operating voltage, 20 V (maximum)
  • Total RON: 42 mΩ (typical)
  • 0.6-A to 5.3-A adjustable current limit (±8%)
  • IMON Current indicator output
    • ±8% accuracy for TPS25940-Q1/TPS25940L-Q1
  • Adjustable under-, overvoltage threshold (±2%)
  • Reverse current blocking
  • 1-µs reverse voltage shutoff
  • Programmable dVo/dt control
  • Power good and fault outputs
  • Short-to-battery protection
  • Short-to-ground protection
  • TPS25940-Q1/TPS259401A-Q1: auto-retry
  • TPS25940L-Q1: latch-off

The TPS25940xx-Q1 eFuse Power Switches are compact, feature rich power management devices 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 systems with load side holdup energy that must not drain back to a failed supply bus.

Load, source and device protection are provided with many programmable features including overcurrent, dVo/dt ramp and overvoltage, undervoltage thresholds. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output. Precise programmable undervoltage, overvoltage thresholds and mode simplify power management design.

The TPS25940xx-Q1 monitor V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) – 66 mV). This function supports supply bus protection from over-voltages during output short to battery faults.

The TPS25940xx-Q1 eFuse Power Switches are compact, feature rich power management devices 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 systems with load side holdup energy that must not drain back to a failed supply bus.

Load, source and device protection are provided with many programmable features including overcurrent, dVo/dt ramp and overvoltage, undervoltage thresholds. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output. Precise programmable undervoltage, overvoltage thresholds and mode simplify power management design.

The TPS25940xx-Q1 monitor V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) – 66 mV). This function supports supply bus protection from over-voltages during output short to battery faults.
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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 TPS25940xx-Q1 2.7-V to 18-V eFuse with Integrated Short-to-Battery Protection datasheet (Rev. E) PDF | HTML 2021/1/29
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
應用說明 Charging Super Capacitor With eFuse 2017/8/8
應用說明 Power Multiplexing Using Load Switches and eFuses (Rev. A) 2017/6/20

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

TPS25940EVM-635 — TPS25940x 評估模組

TPS25940XEVM-635 是一款運作範圍從 2.7V 到 18V 的電子保險絲（具備 DEVSLP 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

TPS25940-Q1 Unencrypted PSpice Transient Model Package (Rev. B)

SLVMBN6B.ZIP (78 KB) - PSpice 模型
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模擬型號

TPS25940L-Q1 PSpice Transient Model

SLVMCQ3.ZIP (84 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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參考設計

PMP30046 — 企業級 SSD 備用電源參考設計

PMP30046 參考設計提供企業 SSD 備用電源供應器的系統解決方案。熱插拔控制器的輸入電壓可以是 5V 或 12V。降壓級將此輸入電壓轉換為 3.3V，最大負載電流為 2.5A。3.3V 升壓至 28V，用於為備用電容器充電。若發生電源故障事件，另一個降壓級會使用儲存在備用電容器中的能源，以 2.5A 最大負載電流向輸入軌供應 5V。
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參考設計

TIDA-01413 — 具有兩個 4-Gbps 四路解串器的 ADAS 8 通道感測器融合集線器參考設計

此感測器融合集線器參考設計允許透過同軸纜線連接最多四台 2 百萬像素的攝影機和最多四組雷達模組。此設計運用這些同軸纜線為感測器提供電源、後通道通訊及時鐘同步。這兩個 4 Gbps FPD-Link III 四路解串器可透過 Samtec 連接器，支援行動工業處理器介面 (MIPI) 攝影機序列介面-2 (CSI-2) 到應用處理器的雙輸出。
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參考設計

TIDA-01514 — 用於天線模組的保護和輕載偵測參考設計

TIDA-01514 參考設計可為車用資訊娛樂與導航系統中使用的天線模組提供保護與診斷。此設計是天線低壓降線性穩壓器 (LDO) 的替代解決方案，旨在減少歐姆壓降 (IR)，同時實現短路、電池短路、逆電流和過電壓保護等必要保護措施。此設計符合子系統級的診斷要求，例如精準的輕負載和過載偵測。

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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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