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Product details

Parameters

FET Internal 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 UL recognition Yes Overcurrent response Current Limiting Current limit type Adjustable Fault response Auto Retry Current limit function enabled Always Ron (Typ) (mOhm) 42 Rating Automotive Operating temperature range (C) -40 to 125 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%)
  • 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: Auto-Retry
  • TPS25940L-Q1: Latch-Off

All trademarks are the property of their respective owners.

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Description

The TPS25940x-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 TPS25940x-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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Technical documentation

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Type Title Date
* Datasheet TPS25940x-Q1 2.7-V to 18-V eFuse with Integrated Short-to-Battery Protection datasheet (Rev. D) Sep. 18, 2018
Application notes eFuse: Safety Certification and why it Matters Mar. 18, 2020
More literature 11 Ways to Protect Your Power Path white paper Jul. 03, 2019
User guides TPS25940 Evaluation Module User's Guide (Rev. B) Jul. 09, 2018
Application notes Basics of eFuses (Rev. A) Apr. 05, 2018
Technical articles How can a load switch extend your device’s battery life? Mar. 20, 2018
Technical articles How and why you should use load switches for power sequencing Feb. 06, 2018
Technical articles How to use load switches and eFuses in your set-top box design Nov. 23, 2017
Application notes Charging Super Capacitor With eFuse Aug. 08, 2017
Application notes Power Multiplexing Using Load Switches and eFuses (Rev. A) Jun. 20, 2017
Technical articles Don’t leave it floating! Power off your outputs with quick output discharge Dec. 09, 2016

Design & development

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

Hardware development

EVALUATION BOARDS Download
TPS25940x Evaluation Module
TPS25940EVM-635
document-generic User guide
$75.00
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 MODELS Download
SLVMBN6B.ZIP (78 KB) - PSpice Model
SIMULATION MODELS Download
SLVMCQ3.ZIP (84 KB) - PSpice Model
CALCULATION TOOLS 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 — This 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 the (...)
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

Support & training

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Videos

Understanding circuit protection solutions: eFuses vs. discrete protection circuits

In this video, learn how eFuse solutions overcome the limitations of discrete solutions while meeting circuit protection requirements.

Posted: 21-Jan-2017
Duration: 02:56

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