5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN

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  • The STEVAL-ISA126V1 is a 5 V-2 A application with 3.3 A peak current capability for 1.9 sec, using VIPer28H, a new off-line high voltage converter from STMicroelectronics.

    In some applications an SMPS, normally supposed to deliver a certain amount of power, from time to time undergoes load peaks that can be even two or more times as much, but only for a time interval which is short if compared to the thermal time constants of the power components. Typical examples of such loads are printers and audio systems.
    In these cases, it is more cost-effective to thermally design the system for the maximum continuous power and not for the peak power demand, which will be sustained only for a limited time window.
    Such a design is possible thanks to the EPT function of VIPER28H, which allows the designer to fix the maximum time window during which the converter is able to manage the peak power still maintaining output voltage regulation. If the overload lasts more than this time window, the converter is automatically shut down in auto-restart mode, in order to avoid the damaging of the power components.

    Key Features

    • Input voltage range: 90 VRMS to 265 VRMS
    • Output voltage: 5 V
    • Max output current: IOUTmax 2 A
    • Peak output current: IOUTpk 3 A
    • Precision of output regulation: ΔVOUT_LF ±5%
    • High frequency output voltage ripple: ΔVOUT_HF 50 mV
    • Max ambient operating temperature: TA 60 ºC
    • 800 V avalanche rugged power section
    • PWM operation , at 115 kHz with frequency jittering for lower EMI
    • Limiting current with adjustable set point
    • On-board soft-start
    • Safe auto-restart after a fault condition, low standby power (< 50 mW at 265 Vac)
    • Adjustable and accurate over voltage protection, thermal shutdown with hysteresis, delayed overload protection
    • RoHS compliant

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Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
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STEVAL-ISA126V1 VIPER28
Active
75.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA126V1

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2019-11-19

Distributor Name

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-19

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STEVAL-ISA126V1

Core Product

VIPER28

Marketing Status

Active

Unit Price (US$)

75.0*

Distributor availability ofSTEVAL-ISA126V1

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2 1 Order Now

Distributor reported inventory date: 2019-11-19

Distributor Name

MOUSER

Stock

2

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-19

Unit Price (US$)

75

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) 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
      DB2091
      5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN
      1.0
      154.71 KB
      PDF
      DB2091

      5 V-2 A, 115 kHz flyback with temporary extra-power management based on the VIPER28HN

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA126V1 gerber files 1.0
      485.2 KB
      ZIP

      STEVAL-ISA126V1 gerber files

    • Description Version Size Action
      STEVAL-ISA126V1 BOM 1.0
      118.7 KB
      PDF

      STEVAL-ISA126V1 BOM

    • Description Version Size Action
      STEVAL-ISA126V1 schematics 1.0
      86.17 KB
      PDF

      STEVAL-ISA126V1 schematics

Publications and Collaterals

    • Description Version Size Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

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-ISA126V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA126V1

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.