4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR

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  • The STEVAL-ISA082V1, based on the ST1S40IPHR, is an internally compensated 800 kHz fixed-frequency PWM synchronous stepdown converter evaluation board.

    The ST1S40 operates from 4.0 V to 18.0 V input, while it regulates an output voltage as low as 0.8 V and up to VIN (100% duty cycle).
    The ST1S40 integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltage.
    The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
    The ST1S40 is protected through cycle-by-cycle current limiting in case of overload and is also protected by a current foldback function with frequency reduction in case of short-circuit.
    The device is available with an enable on/off function.

    Key Features

    • Input voltage Vin = 4 V to 18 V
    • Output voltage Vout = 3.3 V
    • Maximum output current: 3 A
    • Switching frequency: 800 kHz
    • Short-circuit protected
    • 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-ISA082V1 ST1S40IPHR
Active
47 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-ISA082V1

Distributor Name
Region Stock Min. Order Third party link
P&S ASIA/PACIFIC 1 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

Distributor reported inventory date: 2019-11-13

Distributor Name

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Farnell Element14

Stock

6

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-13

STEVAL-ISA082V1

Core Product

ST1S40IPHR

Marketing Status

Active

Unit Price (US$)

47.0*

Distributor availability ofSTEVAL-ISA082V1

Distributor Name
Region Stock Min. Order Third party link
P&S ASIA/PACIFIC 1 1 Order Now
Farnell Element14 EUROPE 6 1 Order Now

Distributor reported inventory date: 2019-11-13

Distributor Name

P&S

Stock

1

Min.Order

1

Region

ASIA/PACIFIC Order Now

Farnell Element14

Stock

6

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-13

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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Technical Documentation

    • Description Version Size Action
      DB1447
      3 A peak 800 kHz fixed-frequency PWM synchronous step-down evaluation board with enable on/off based on the ST1S40IPHR
      2.0
      231.17 KB
      PDF
      DB1447

      3 A peak 800 kHz fixed-frequency PWM synchronous step-down evaluation board with enable on/off based on the ST1S40IPHR

Hardware Resources

    • Description Version Size Action
      STEVAL-ISA082V1 gerber files 2.1
      135.5 KB
      ZIP

      STEVAL-ISA082V1 gerber files

    • Description Version Size Action
      STEVAL-ISA082V1 BOM 1.0
      70.44 KB
      PDF

      STEVAL-ISA082V1 BOM

    • Description Version Size Action
      STEVAL-ISA082V1 schematics 1.0
      37.66 KB
      PDF

      STEVAL-ISA082V1 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-ISA082V1
Active
CARD Industrial Ecopack2 -

STEVAL-ISA082V1

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.