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Product details

Parameters

FET Internal Ron (Typ) (mOhm) 28 Vin (Min) (V) 2.7 Vin (Max) (V) 23 Vabsmax_cont (V) 28 Current limit (Min) (A) 0.5 Current limit (Max) (A) 6 Overcurrent response current limiting, circuit breaker Fault response Auto Retry, Latch Off UL recognition UL2367, IEC62368 (pending) open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

VQFN-HR (RPW) 10 open-in-new Find other eFuses & hot swap controllers

Features

  • Wide operating input voltage range: 2.7 V to 23 V
    • 28-V absolute maximum
    • Withstands negative voltages up to – 15 V
  • Integrated back-to-back FETs with low On-Resistance: RON = 28.3 mΩ (typ)
  • Ideal diode operation with true reverse current blocking
  • Fast overvoltage protection
    • Overvoltage clamp (OVC) with pin-selectable threshold (3.8 V, 5.7 V, 13.8 V) and 5-µs (typ) response time OR
    • Adjustable overvoltage lockout (OVLO) with 1.2-µs (typ) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit OR circuit-breaker options
    • Adjustable threshold (ILIM) 0.5 A - 6 A
      • ±10% accuracy for ILIM > 1 A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 x ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1 A)
  • Fast-trip response for short-circuit protection
    • 500-ns (typ) response time
    • Adjustable (2 x ILIM) and fixed thresholds
  • Active high enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Digital outputs
    • Priority power MUX control (AUXOFF) and Fault indication (FLT) OR
    • Power Good indication (PG) with adjustable threshold (PGTH)
  • UL 2367 recognition (pending)
  • IEC 62368 CB certification (pending)
  • Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch

All trademarks are the property of their respective owners.

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Description

The TPS25947xx family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the devices well suited for power MUX/ORing applications as well as systems which need load side energy hold up storage in case input power supply fails. The devices use linear ORing based scheme to ensure almost zero DC reverse current and emulate ideal diode behavior with minimum forward voltage drop and power dissipation.

Output slew rate and inrush current can be adjusted using a single external capacitor. Loads are protected from input overvoltage conditions either by clamping the output to a safe fixed maximum voltage (pin selectable), or by cutting off the output if input exceeds an adjustable overvoltage threshold. The devices respond to output overload by actively limiting the current or breaking the circuit. The output current limit threshold as well as the transient overcurrent blanking timer are user adjustable. The current limit control pin also functions as an analog load current monitor.

The devices are available in a 2-mm x 2-mm, 10-pin HotRod QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Datasheet TPS25947xx, 2.7 - 23 V, 5.5 A, 28-mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection datasheet (Rev. A) Mar. 31, 2021
Application note Basics of Power MUX (Rev. A) Oct. 20, 2020
Application note Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) Oct. 07, 2020
User guide TPS25947EVM: Evaluation Module for TPS25947 eFuse Sep. 30, 2020
Application note eFuses in Smart Electricity Meters Sep. 01, 2020

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
99
Description
The TPS25947EVM eFuse evaluation board allows reference circuit evaluation of TPS25947 eFuse products. The TPS25947xx device is a 2.7-V to 23-V, 5.5-A eFuse with integrated 28 mΩ FET with reverse current protection, input reverse polarity protection, over current, inrush current (...)
Features
  • 2.7 V to 23 V (typ) operation
  • 0.5-A to 6-A programmable current limit using onboard jumpers
  • Programmable transient current blanking timer
  • Programmable output slew rate control, UVLO , current limit
  • LED status for power good and fault indication
  • Power mux and parallel configurations

Design tools & simulation

SIMULATION MODEL Download
SLVMDJ6.ZIP (118 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
SLVRBH5.ZIP (163 KB)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RPW) 10 View options

Ordering & quality

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  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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