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eFuses 和熱插拔制器

TPS25940

現行

具有反向電流阻斷與 DevSleep 支援的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse

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產品規格表

TPS25940

現行
產品規格表 立即訂購

產品詳細資料

FET Internal Ron (typ) (mΩ) 42 Vin (min) (V) 2.7 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.6 Current limit (max) (A) 5.2 Overcurrent response current limiting Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, Power good signal, Reverse current blocking always UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Reverse current blocking, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
FET Internal Ron (typ) (mΩ) 42 Vin (min) (V) 2.7 Vin (max) (V) 18 Vabsmax_cont (V) 20 Current limit (min) (A) 0.6 Current limit (max) (A) 5.2 Overcurrent response current limiting Soft start Adjustable Overvoltage response Cut-off Features Current monitoring, Fault output, Power good signal, Reverse current blocking always UL recognition UL2367, UL60950 Rating Catalog Device type eFuses and hot swap controllers Operating temperature range (°C) -40 to 85 Function Adjustable current limit, Current monitoring, Inrush current control, Overvoltage protection, Power good signal, Reverse current blocking, Short circuit protection, Thermal shutdown Quiescent current (Iq) (typ) (A) 0.0058 Quiescent current (Iq) (max) (A) 0.008
WQFN (RVC) 20 12 mm² 4 x 3
  • 2.7 V – 18 V Operating Voltage, 20 V (Max)
  • 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)
  • 95 µA DevSleep Mode IQ (Typical)
  • 15 µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Threshold
  • Reverse Current Blocking
  • 1 µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • –40°C to 125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A max)
  • UL60950 - Safe during Single Point Failure Test
    • Open/Short ILIM detection
  • 2.7 V – 18 V Operating Voltage, 20 V (Max)
  • 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)
  • 95 µA DevSleep Mode IQ (Typical)
  • 15 µA Disabled IQ (Typical)
  • ±2% Overvoltage, Undervoltage Threshold
  • Reverse Current Blocking
  • 1 µs Reverse Voltage Shutoff
  • Programmable dVo/dt Control
  • Power Good and Fault Outputs
  • –40°C to 125°C Junction Temperature Range
  • UL 2367 Recognized
    • File No. 169910
    • RILIM ≥ 20 kΩ (4.81 A max)
  • UL60950 - Safe during Single Point Failure Test
    • Open/Short ILIM detection

The TPS25940 eFuse Power Switch is a compact, feature rich power management device with a full suite of protection functions, including a low power DevSleep™ mode that supports compliance with the SATA™ Device Sleep standard. 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 the low IQ DevSleep mode simplify SSD power management design.

The TPS25940 monitors V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) - 10 mV). This function supports swift changeover to a boosted voltage energy storage element in systems where backup voltage is greater than bus voltage.

The TPS25940 eFuse Power Switch is a compact, feature rich power management device with a full suite of protection functions, including a low power DevSleep™ mode that supports compliance with the SATA™ Device Sleep standard. 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 the low IQ DevSleep mode simplify SSD power management design.

The TPS25940 monitors V(IN) and V(OUT) to provide true reverse current blocking when V(IN) < (V(OUT) - 10 mV). This function supports swift changeover to a boosted voltage energy storage element in systems where backup voltage is greater than bus voltage.
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類型 標題 日期
* Data sheet TPS25940x 2.7 – 18V eFuse with True Reverse Blocking and DevSleep Support for SSDs datasheet (Rev. A) PDF | HTML 2015年 3月 26日
Certificate TPS25940 CB Test Certificate IEC 62368-1 2021年 7月 8日
Certificate TPS2594x UL Certificate of Compliance UL 2367 2020年 4月 10日
Functional safety information eFuse: Safety Certification and why it Matters 2020年 3月 18日
Certificate TPS25940 UL Certificate of Compliance IEC 62368-1 2020年 1月 17日
E-book 11 Ways to Protect Your Power Path 2019年 7月 3日
Application note Minimizing System Down-time with Smart eFuses 2019年 6月 12日
EVM User's guide TPS25940 Evaluation Module User's Guide (Rev. B) 2018年 7月 9日
Application note Basics of eFuses (Rev. A) 2018年 4月 5日
Application note Charging Super Capacitor With eFuse 2017年 8月 8日
Technical article How adding an eFuse will protect your brand’s reputation PDF | HTML 2017年 6月 21日
Application note Power Multiplexing Using Load Switches and eFuses (Rev. A) 2017年 6月 20日
Application note Achieve 20-A Circuit Protection and Space Efficiency Using Paralleled eFuses 2016年 11月 3日
Technical article eFuses: clamping and cutoff and auto retry, oh my! – part 2/3 PDF | HTML 2016年 5月 26日
Technical article eFuses: clamping and cutoff and auto retry, oh my! – part 1/3 PDF | HTML 2016年 5月 10日

設計與開發

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開發板

TPS25940EVM-635 — TPS25940x 評估模組

The TPS25940XEVM-635 is an eFuse (Current Limiter with DEVSLP) that operates from 2.7V to 18V, and have integrated back-to-back FETs with programmable under-voltage, over-voltage, reverse-voltage, over-current and in-rush current protection. It also includes analog current monitoring in a small (...)

使用指南: PDF
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模擬型號

TPS25940A Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAB0C.ZIP (72 KB) - PSpice Model
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模擬型號

TPS25940L Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAB1C.ZIP (72 KB) - PSpice Model
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計算工具

SLVC571 — TPS2594x Design Calculation Tool

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產品
eFuses 和熱插拔制器
TPS25940 — 具有反向電流阻斷與 DevSleep 支援的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse TPS25940-Q1 — 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 TPS25942A — 具有反向電流阻斷、IMON 和 PG 的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse TPS25942L — 具有反向電流阻斷和閉鎖故障反應功能的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse TPS25944A — 具有反向電流阻斷和 4-ms 斷路器功能的 2.7-V 至 18-V、42mΩ、0.6-5.2A eFuse TPS25944L — 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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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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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

TIDA-00429 — 具有 DevSleep SATA 介面的 e-Fuse 電源開關

TPS25940A provides a dedicated DevSleep interface terminal (DEVSLP) to force the device in low power mode. The DEVSLP pin is compatible with standard hardware signals asserted from the host controller. When pulled high, it puts the device in low power DevSleep mode. In this mode, the quiescent (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00304 — 斷電保持儲能解決方案

This solution stores and delivers "last gasp" energy for systems, such as SSDs, that require functionality for a short time after power loss in order to shut down in a controlled fashion. By storing holdup energy at higher than bus voltage the amount of capacitance can be reduced by up to 80%, (...)
Design guide: PDF
電路圖: PDF
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