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  • The STEVAL-ISA176V1 evaluation board implements a 5 W (5 V / 1 A) wide-range mains battery charger with constant voltage/constant current, tailored for AC-DC chargers for mobile phones and adapters or other hand-held equipment.

    The core of the application is the ALTAIR05T-800, the first “all-primary sensing switching regulator” of the ALTAIR family.
    The IC combines a high-performance, low-voltage PWM controller chip and an 800 V, avalanche-rugged power MOSFET in the same package.
    The PWM chip is a quasi-resonant (QR) current mode controller IC specifically designed for QR ZVS (zero voltage switching at switch turn-on) flyback converters.
    The device is capable of providing constant output voltage (CV) and constant output current (CC) regulation using primary-sensing feedback. This eliminates the need for the optocoupler, the secondary voltage reference and the current sensor, while still maintaining quite accurate regulation.
    In addition, it is possible to compensate the voltage drop on the output cable to improve CV regulation on the externally accessible terminals.
    Extremely low consumption under no load conditions is ensured thanks to controlled burst mode operation that, along with the built-in high voltage startup circuit and the low operating current of the device, helps minimize the residual input consumption. Although an auxiliary winding is required in the transformer to correctly perform CV/CC regulation, the chip can be powered directly from the rectified mains. This is useful particularly during CC regulation, where the flyback voltage is generated by the winding drops.

    Key Features

    • Universal input mains range: 90 - 264 V AC, frequency 45-65 Hz
    • Output voltage: 5 V @ 1 A continuous operation
    • Optoless constant voltage - constant current output regulation
    • Standby mains consumption: < 100 mW @ 230 V AC
    • Average efficiency: >70%
    • EMI: in accordance with EN55022-Class-B
    • RoHS compliant

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Related Applications

Power Supplies and Converters

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-ISA176V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA176V1

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.

Sample & Buy

Part Number
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Order from ST
Core Product
Marketing Status
Supplier
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
STEVAL-ISA176V1 Available at 2 distributors

Distributor availability ofSTEVAL-ISA176V1

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 3 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

ALTAIR05T-800
Active
ST EAR99 NEC ITALY - 59.0 / 1

STEVAL-ISA176V1

Core Product

ALTAIR05T-800

Marketing Status

Active

Budgetary Price (US$)*/Qty

59.0 / 1

Distributor availability ofSTEVAL-ISA176V1

Distributor Name
Region Stock Min. Order Third party link
RS COMPONENTS EUROPE 3 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2020-09-22

Distributor Name

RS COMPONENTS

Stock

3

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-09-22

Supplier

ST

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

59.0 / 1

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