Top

Product details

Parameters

FET Internal Ron (Typ) (mOhm) 42 Vin (Min) (V) 2.7 Vin (Max) (V) 18 Vabsmax_cont (V) 20 Current limit (Min) (A) 0.6 Current limit (Max) (A) 5.3 Overcurrent response Current limiting Fault response Auto Retry, Latch Off UL recognition open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

WQFN (RVC) 20 12 mm² 3 x 4 open-in-new Find other eFuses & hot swap controllers

Features

  • 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
open-in-new Find other eFuses & hot swap controllers

Description

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.

open-in-new Find other eFuses & hot swap controllers
Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 7
Type Title Date
* Data sheet TPS25940xx-Q1 2.7-V to 18-V eFuse with Integrated Short-to-Battery Protection datasheet (Rev. E) Jan. 29, 2021
Application note eFuse: Safety Certification and why it Matters Mar. 18, 2020
E-book 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
User guide TPS25940 Evaluation Module User's Guide (Rev. B) Jul. 09, 2018
Application note Basics of eFuses (Rev. A) Apr. 05, 2018
Application note Charging Super Capacitor With eFuse Aug. 08, 2017
Application note Power Multiplexing Using Load Switches and eFuses (Rev. A) Jun. 20, 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
TPS25940x Evaluation Module
TPS25940EVM-635
document-generic User guide
75
Description

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 (...)

Features
  • 2.7V to 18V operating voltage range
  • Up to 5A Adjustable ILIMIT setting option using Jumpers
  • On board fault and power good LED’s
  • Linear output ramp (gate dV/dt control) option
  • On board test point access for all device level pins

Design tools & simulation

SIMULATION MODEL Download
SLVMBN6B.ZIP (78 KB) - PSpice Model
SIMULATION MODEL Download
SLVMCQ3.ZIP (84 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
SLVC571.ZIP (190 KB)

Reference designs

REFERENCE DESIGNS Download
ADAS 8-Channel Sensor Fusion Hub Reference Design with Two 4-Gbps Quad Deserializers
TIDA-01413 — This sensor fusion hub reference design allows the connection of up to four 2-megapixel cameras and up to four radar modules over coaxial cable. This design utilizes these coaxial cables to provide power, backchannel communication, and clock synchronization to the sensors. The two 4 Gbps FPD-Link (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Protection and Light-Load Detection Reference Design for Antenna Modules
TIDA-01514 The TIDA-01514 reference design provides protection and diagnostics for antenna modules for use in automotive infotainment and navigation systems. This design is an alternate solution for antenna low-dropout linear regulators (LDOs) for the purpose of achieving lower ohmic drop (IR) while meeting (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Enterprise SSD Backup Power Reference Design
PMP30046 — The PMP30046 reference design shows a system solution for an enterprise SSD backup power supply. The input voltage of the hotswap controller can be either 5V or 12V. A buck stage converts this input voltage to 3.3V with a maximum load current of 2.5A. The 3.3V are boosted to 28V for charging a (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
WQFN (RVC) 20 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos