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Interruptores y controladores de protección de potencia
Fusibles electrónicos (intercambios en caliente integrados)

TPS25940

ACTIVO

eFuse de 0.6-5.2 A, 2.7 V a 18 V, 42 mΩ, con bloqueo de corriente inversa y soporte DevSleep

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TPS25940

ACTIVO
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Detalles del producto

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, Thermal shutdown UL recognition UL2367, UL60950 Overcurrent response Current limiting Fault response Auto-retry, 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, Thermal shutdown UL recognition UL2367, UL60950 Overcurrent response Current limiting Fault response Auto-retry, 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 – 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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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos TPS25940x 2.7 – 18V eFuse with True Reverse Blocking and DevSleep Support for SSDs datasheet (Rev. A) PDF | HTML 26/03/2015
Certificado TPS25940 CB Test Certificate IEC 62368-1 8/07/2021
Certificado TPS2594x UL Certificate of Compliance UL 2367 10/04/2020
Información sobre seguridad funcional eFuse: Safety Certification and why it Matters 18/03/2020
Certificado TPS25940 UL Certificate of Compliance IEC 62368-1 17/01/2020
Libro electrónico 11 Ways to Protect Your Power Path 3/07/2019
Nota sobre la aplicación Minimizing System Down-time with Smart eFuses 12/06/2019
Nota sobre la aplicación Basics of eFuses (Rev. A) 5/04/2018
Nota sobre la aplicación Charging Super Capacitor With eFuse 8/08/2017
Artículo técnico How adding an eFuse will protect your brand’s reputation PDF | HTML 21/06/2017
Nota sobre la aplicación Power Multiplexing Using Load Switches and eFuses (Rev. A) 20/06/2017
Nota sobre la aplicación Achieve 20-A Circuit Protection and Space Efficiency Using Paralleled eFuses 3/11/2016
Artículo técnico eFuses: clamping and cutoff and auto retry, oh my! – part 2/3 PDF | HTML 26/05/2016
Artículo técnico eFuses: clamping and cutoff and auto retry, oh my! – part 1/3 PDF | HTML 10/05/2016

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

TPS25940EVM-635 — Módulo de evaluación TPS25940x

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 (...)

Guía del usuario: PDF
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En inventario
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Modelo de simulación

TPS25940A Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAB0C.ZIP (72 KB) - Modelo PSpice
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Modelo de simulación

TPS25940L Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAB1C.ZIP (72 KB) - Modelo PSpice
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Herramienta de cálculo

SLVC571 — TPS2594x Design Calculation Tool

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Herramienta de cálculo

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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Diseño de referencia

TIDA-00304 — Solución de almacenamiento de energía de retención de último gas

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%, (...)

Productos y hardware compatibles
Diseño de referencia

TIDA-00429 — Interruptor de alimentación e-Fuse con interfaz SATA DevSleep

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 (...)

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
WQFN (RVC) 20 Ultra Librarian
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