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  • The STEVAL-IHT008V1 evaluation board limits the inrush current charging a DC bus capacitor so that it is compliant with the IEC 61000-3-3 standard. This inrush current is based on a soft-start procedure for the rectifier bridge achieved with a T1635T-8FP Triac added in series with the mains line, which is controlled by the STM8S103K3 microcontroller through progressive phase-control during the startup phase.

    This solution drastically reduces standby losses as the DC bus can be totally disconnected from the AC mains when it is not required. The DC bus is easily turned off by turning off the series Triac, without needing an additional relay to open the circuit in standby.
    Steady-state losses are also reduced because NTC resistors, traditionally used to limit inrush current, are not required; nor are the corresponding relays to bypass them.
    This board also demonstrates that AC loads can be driven with an easy-design isolated solution using the same power supply for the whole system and some opto-transistors to control the ACST210-8FP, ACS108-8SN and Z0109MUF AC switches.

    Key Features

    • Fully electronic solution without the need for an inrush current limiter resistor and bulky by-pass electromechanical relay
    • DC bus disconnection at standby to reduce loss below 0.3 W
    • Inrush current compliant with IEC61000-3-3
    • Operation allowed with PFC (continuous or discontinuous)
    • EN 55015, IEC 61000-4-11 compliant
    • Criteria A @ 2 kV IEC 61000-4-5 and @ 4 kV IEC 61000-4-4
    • Insulated control of AC switches used to drive AC loads for residential appliances
    • RoHS compliant

Recommended for you

Embedded Software

    • Part Number

      STEVAL-IHT008V1 firmware

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB2822
      Low standby loss front-end with inrush current limitation and insulated AC switch control
      2.0
      1.39 MB
      PDF
      DB2822

      Low standby loss front-end with inrush current limitation and insulated AC switch control

    • Description Version Size Action
      UM2027
      Inrush current limitation when charging a DC bus capacitor for IEC 61000-3-3 compliance
      1.1
      2.57 MB
      PDF
      UM2027

      Inrush current limitation when charging a DC bus capacitor for IEC 61000-3-3 compliance

Hardware Resources

    • Description Version Size Action
      STEVAL-IHT008V1 gerber files 1.0
      323.33 KB
      ZIP

      STEVAL-IHT008V1 gerber files

    • Description Version Size Action
      STEVAL-IHT008V1 BOM 1.0
      17.87 KB
      PDF

      STEVAL-IHT008V1 BOM

    • Description Version Size Action
      STEVAL-IHT008V1 schematic 1.0
      102.41 KB
      PDF

      STEVAL-IHT008V1 schematic

Legal

    • Description Version Size Action
      Terms of use 1.7
      57.54 KB
      PDF

      Terms of use

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-IHT008V1
Active
CARD Industrial Ecopack2 -

STEVAL-IHT008V1

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

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Core Product
Marketing Status
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ECCN (US)
ECCN (EU)
Country of Origin
Budgetary Price (US$)*/Qty
STEVAL-IHT008V1 Available at 2 distributors

Distributor availability ofSTEVAL-IHT008V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
MOUSER WORLDWIDE 3 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

Buy now ACST210-8FP, ACS108-8SN, Z0109MUF, T1635T-8FP, VIPer26LD
Active
ST EAR99 NEC ITALY 220.0 / 1

STEVAL-IHT008V1

Core Product

ACST210-8FP, ACS108-8SN, Z0109MUF, T1635T-8FP, VIPer26LD

Marketing Status

Active

Budgetary Price (US$)*/Qty

220.0 / 1

Distributor availability ofSTEVAL-IHT008V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3 1 Order Now
MOUSER WORLDWIDE 3 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

Supplier

ST

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

220.0 / 1

Country of Origin

ITALY

(*) 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