5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

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  • The STEVAL-IFP021V1 demonstration board is based on the STEF05 and STEF12 electronic fuses (E-Fuses).

    It is designed to help users evaluate the benefit of the complete protection offered by the E-Fuse family and to customize their own application.
    The E-Fuse family of hot-swap converters is designed to replace the mechanical fuses on low voltage power lines.
    The STEF05 and STEF12 are integrated electronic fuses optimized for monitoring output current and input voltage.
    Connected in series to the 5 V/12 V rails, they are capable of protecting the electronic circuitry on the output from overcurrent and overvoltage.
    The turn-on time is programmable by means of an external capacitor, allowing control of the inrush current at startup and during hot-swaps.
    When an overload condition occurs, the E-Fuse limits the output current to a predefined safe value. If the anomalous overload condition persists, it goes into an open state, disconnecting the load from the power supply.
    If a continuous short-circuit is present on the board, when power is re-applied the E-Fuse initially limits the output current to a safe value, and then again goes into an open state.
    Both devices are equipped with a thermal protection circuit.
    The intervention of the thermal protection is signaled to the board monitoring circuits through a signal on the enable/fault pin that can be connected to other parts belonging to the same family to cause a simultaneous shutdown during failure events.
    Unlike mechanical fuses, which must be physically replaced after a single event, E-Fuses do not degrade in their performance after short-circuit/thermal protection interventions and can be reset either by re-cycling the supply voltage or by using the enable pin.

    Key Features

    • Input voltages: 5 V and 12 V
    • Continuous current: 3.6 A (typ.) each
    • Adjustable slew rate for output voltage
    • Overvoltage clamp
    • Undervoltage lockout
    • Programmable short-circuit current limit
    • Overload current limit
    • Controlled output voltage ramp
    • Thermal latch protection
    • Fault condition flag
    • Enable pin
    • RoHS compliant

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Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
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STEVAL-IFP021V1 STEF05; STEF12
Active
50.0 1 EAR99 ITALY Check Availability

Distributor availability ofSTEVAL-IFP021V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 11 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

11

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-14

Buy now

STEVAL-IFP021V1

Core Product

STEF05; STEF12

Marketing Status

Active

Unit Price (US$)

50.0*

Distributor availability ofSTEVAL-IFP021V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1 1 Order Now
P&S ASIA/PACIFIC 1 1 Order Now
MOUSER WORLDWIDE 11 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

1

Min.Order

1

Region

WORLDWIDE Order Now

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

11

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-14

Unit Price (US$)

50

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DB1521
      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses
      1.1
      164.68 KB
      PDF
      DB1521

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

    • Description Version Size Action
      AN4069
      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses
      1.1
      807.4 KB
      PDF
      AN4069

      5 V and 12 V power line protection based on STEF05 and STEF12 electronic fuses

Hardware Resources

    • Description Version Size Action
      STEVAL-IFP021V1 gerber files 3.1
      112.38 KB
      ZIP

      STEVAL-IFP021V1 gerber files

    • Description Version Size Action
      STEVAL-IFP021V1 BOM 2.1
      39.71 KB
      PDF

      STEVAL-IFP021V1 BOM

    • Description Version Size Action
      STEVAL-IFP021V1 schematics 1.0
      23.56 KB
      PDF

      STEVAL-IFP021V1 schematics

Publications and Collaterals

    • Description Version Size Action
      Products and solutions for Smart industry 3.0
      2.99 MB
      PDF

      Products and solutions for Smart industry

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-IFP021V1
Active
CARD Industrial Ecopack2 -

STEVAL-IFP021V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.