1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06

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  • This demonstration board, based on the ST1S06, is an adjustable current-mode PWM synchronous, step-down DC-DC converter with inhibit function. It is optimized for powering all low-voltage applications and, more generally, to replace the high-current linear solution when the power dissipation may cause overheating of the application environment.

    It provides up to 1.5 A over an input voltage range of 2.5 V to 5.5 V.
    A high switching frequency (1.5 MHz) enables the use of tiny surface-mounted components (SMD). In addition to the resistor divider used to set the output voltage value, only an inductor and two capacitors are required.
    Moreover, low output ripple is guaranteed by the current-mode PWM topology and by the use of low series resistance (ESR) SMD ceramic capacitors.
    The device is thermal protected and current limited to prevent damage due to accidental short circuits.
    It is a complete 1.5 A switching regulator with its internal compensation eliminating the need for additional components.
    The constant-frequency, current-mode, PWM architecture and stable operation with ceramic capacitors results in a low, predictable output ripple. To clamp the error amplifier reference voltage, this device includes a soft-start control block generating a voltage ramp.
    The ST1S06 is available in a 6L-DFN 3x3 package.

    Key Features

    • Adjustable current-mode pulse width modulation (PWM) synchronous, step-down DC-DC converter with inhibit function
    • Input voltage, Vin: 2.5 V to 5.5 V
    • Output voltage, Vout: 3.3 V
    • Output current, Iout: 1.5 A
    • Switching frequency: 1.5 MHz
    • 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-ISA043V2 ST1S06PUR
Active
47 1 EAR99 ITALY - No availability of distributors reported, please contact our sales office

STEVAL-ISA043V2

Core Product

ST1S06PUR

Marketing Status

Active

Unit Price (US$)

47.0*

Unit Price (US$)

47

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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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB1172
      1.5 A /1.2 V high-frequency synchronous buck converter demonstration board based on the ST1S06
      1.1
      77.14 KB
      PDF
      DB1172

      1.5 A /1.2 V high-frequency synchronous buck converter demonstration board based on the ST1S06

    • Description Version Size Action
      AN2371
      ST1S06 high frequency synchronous buck converter
      2.2
      172.28 KB
      PDF
      AN2371

      ST1S06 high frequency synchronous buck converter

Hardware Resources

    • Description Version Size Action
      PCB layout 1.0
      31.98 KB
      ZIP

      PCB layout

    • Description Version Size Action
      Bill of materials 1.0
      46.08 KB
      PDF

      Bill of materials

    • Description Version Size Action
      Board schematic 1.0
      38.7 KB
      PDF

      Board schematic

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-ISA043V2
Active
CARD Industrial Ecopack2 -

STEVAL-ISA043V2

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.