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  • The STEVAL-ISA105V1 demonstration board implements a power supply based on a quasi-resonant mode of operation using ST primary side ALTAIR04-900 flyback switch.

    The ALTAIR04-900 is a high-voltage all-primary sensing switcher intended for operating directly from the rectified mains with minimum external parts. It combines a high-performance low voltage PWM controller chip and a 900 V avalanche-rugged power section in the same package.
    The controller is a current-mode specifically designed for offline quasi-resonant flyback converters. The device is capable of providing constant output voltage using all primary sensing feedback. This eliminates the need for the optocoupler, the secondary voltage reference, as well as the current sensor, while still maintaining quite accurate regulation.

    Key Features

    • Min. operating voltage Vacmin: 90 Vac
    • Max. operating voltage Vacmax: 265 Vac, 440 Vmax
    • Topology: quasi-resonant flyback converter, primary side regulation
    • Mains frequency fL: 50 Hz +/-3 Hz
    • Input/output isolation: yes, Galvanic isolation >2.7 KV
    • Nominal output voltage:
      • 5 V/70 mA nominal, 1 A max.
      • 3.3 V/30 mA nominal, 150 mA max.
      • 12 V/2 mA nominal, 100 mA max.
      • 5 V_ISO/2 mA nominal, 80 mA max.
    • Total output power Pout: 1 W nominal, 7.5 W (during transmission mode)
    • Typical efficiency @ 230 Vac: > 75%
    • Output voltage pk-pk ripple: < 100 mV
    • Protection: short-circuit protection
    • Reflected voltage of transformer, VR: 100 V
    • RoHS compliant

Sample & Buy

Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
Order from Distributors
Order from ST
STEVAL-ISA105V1 Altair04-900
Active
63 1 EAR99 ITALY - No availability of distributors reported, please contact our sales office

STEVAL-ISA105V1

Core Product

Altair04-900

Marketing Status

Active

Unit Price (US$)

63.0*

Unit Price (US$)

63

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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Related Applications

Metering

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB1721
      Power supply for energy meter and power line modem based on the ALTAIR04-900
      1.0
      187.96 KB
      PDF
      DB1721

      Power supply for energy meter and power line modem based on the ALTAIR04-900

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA105V1 gerber files 1.0
      96.88 KB
      ZIP

      STEVAL-ISA105V1 gerber files

    • Description Version Size Action
      STEVAL-ISA105V1 BOM 1.0
      76.91 KB
      PDF

      STEVAL-ISA105V1 BOM

    • Description Version Size Action
      STEVAL-ISA105V1 schematics 1.0
      62.36 KB
      PDF

      STEVAL-ISA105V1 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-ISA105V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA105V1

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.

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