EVLSTCH03-36W-SR

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36W USB charger with selectable output voltage (5-9-12 V @3A) based on STCH03L and SRK1000B

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  • The EVLSTCH03-36W-SR shown in the image here is a 36 W wide-range mains USB charger demonstration board, with selectable output voltage (5 - 9 - 12 V @ 3 A output current), based on the STCH03L and SRK1000B.

    The power circuit is a quasi-resonant (QR) flyback converter, with peak current mode control, based on the STCH03L IC. The circuit operates with secondary side constant voltage (CV) regulation through an optocoupler and is capable of providing constant output current (CC) regulation using primary sensing feedback.
    The STCH03L embeds a 650 V, non-dissipative, HV startup cell, which, along with the extremely low quiescent current and burst-mode management, helps minimize residual input consumption, thus achieving less than 20 mW under no-load condition.
    At secondary side, the SRK1000B controller implements synchronous rectification to increase system efficiency: it controls the synchronous rectifier MOSFET, driving its gate with minimal turn-on delay and maximizing the turn-off time instant (through an adaptive mechanism) so that the residual conduction of the SR MOSFET body diode after turn-off reduces to the target value of 300 ns.
    The charger is designed to meet the most stringent energy saving recommendations (Eu CoC rev. 5 - Tier 2 and EPS of DOE USA) as well as EMI regulation EN55022-Class-B for line conducted noise emissions.

    Key Features

    • Universal AC mains input voltage range: 90 V to 264 V
    • Output voltage: 5 - 9 - 12 V selectable @3 A continuous operation
    • Constant voltage (CV) regulation with optocoupler and constant current (CC) regulation with primary side sensing
    • No-load consumption < 20mW at 230 VAC (with load disconnected from charger)
    • 4 points average efficiency and 10% load efficiency in compliance with Eu CoC rev. 5 - Tier 2 (2016)
    • Line conducted EMI in compliance with EN55022 - Class B
    • Small form factor (73 x 55 x 15 mm)
    • RoHS compliant

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Technical Documentation

    • Description Version Size Action
      DB3823
      36W USB charger with selectable output voltage (5-9-12 V @3A) based on STCH03L and SRK1000B
      1.0
      325.94 KB
      PDF
      DB3823

      36W USB charger with selectable output voltage (5-9-12 V @3A) based on STCH03L and SRK1000B

    • Description Version Size Action
      AN5280
      36W USB charger with selectable output voltage (5-9-12 V @3A) based on STCH03L and SRK1000B
      1.0
      6.72 MB
      PDF
      AN5280

      36W USB charger with selectable output voltage (5-9-12 V @3A) based on STCH03L and SRK1000B

Hardware Resources

    • Description Version Size Action
      EVLSTCH03-36W-SR gerber files 1.0
      360.98 KB
      ZIP

      EVLSTCH03-36W-SR gerber files

    • Description Version Size Action
      EVLSTCH03-36W-SR Bill of materials 1.0
      354.57 KB
      PDF

      EVLSTCH03-36W-SR Bill of materials

    • Description Version Size Action
      EVLSTCH03-36W-SR SCHEMATIC 1.0
      86.31 KB
      PDF

      EVLSTCH03-36W-SR SCHEMATIC

Publications and Collaterals

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      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
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      eDesignSuite-The smart way to design your application

Legal

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      Terms of use 1.7
      57.54 KB
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      Terms of use

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
EVLSTCH03-36W-SR
Active
CARD Industrial Ecopack1 -

EVLSTCH03-36W-SR

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) 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

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Budgetary Price (US$)*/Qty
EVLSTCH03-36W-SR Available at 3 distributors

Distributor availability ofEVLSTCH03-36W-SR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9 1 Order Now
MOUSER WORLDWIDE 9 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

Buy now STCH03
Active
- EAR99 NEC ITALY - 70.0 / 1

EVLSTCH03-36W-SR

Core Product

STCH03

Marketing Status

Active

Budgetary Price (US$)*/Qty

70.0 / 1

Distributor availability ofEVLSTCH03-36W-SR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9 1 Order Now
MOUSER WORLDWIDE 9 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-02

Supplier

-

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

70.0 / 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