Design Win

Universal motor control evaluation board based on the STM8S103F2 MCU and T1235T Triac

Download databrief Order Direct

Product overview


The STEVAL-IHM029V2 is a low-cost universal motor control evaluation board designed for the home appliance market, with particular focus on vacuum cleaners, food processors and power tools. This system features the 20-pin, 8-bit STM8S103F2 microcontroller running at 16 MHz (user-trimmable internal RC clock), featuring 4 KB of Flash memory, a 10-bit A/D converter, 8/16 bit timers, communication interfaces and 640 bytes of E2PROM. The power supply circuitry features the VIPer16L, an off-line converter with an 800 V avalanche-rugged power section, operating at 60 kHz.

The STEVAL-IHM029V2 especially targets vacuum cleaner applications with power up to 900 W and fulfills the requirements of the 2009/125/EC EU directive, applicable starting in September 2017, thanks to the T1235T, a 12 A 800 V high performance Triac. The motor control is based on phase-angle.

In order to limit in-rush current and possible current peaks, the evaluation board features a soft-start routine and a smooth power change function. The board passed the pre-compliance tests for EMC directives IEC 61000-4-4 (burst up to 8 kV) and IEC 61000-4-5 (surge up to 2 kV). In standby mode, the STEVAL-IHM029V2 has an overall power consumption below 300 mW.

  • All features

    • Input voltage range: 90-265 VAC, 50/60 Hz
    • 12 VDC / 5 VDC auxiliary power supply based on the VIPer16L in buck converter topology
    • Total power consumption below 300 mW in standby mode
    • Maximum output power: 1500 W
    • 20-pin, 8-bit STM8S103F2 MCU as main controller
    • Employs zero-voltage switching (ZVS) to synchronize MCU events with the voltage mains
    • Motor driven by T1235T Triac in phase-angle control
    • 5 power levels and standby mode selectable by potentiometer
    • 5 LEDs to display the power level of the board
    • “RUN” LED to indicate the board is functioning
    • Standard in-circuit programming connector
    • IEC 61000-4-4 pre-compliance test passed (burst up to 8 kV)
    • IEC 61000-4-5 pre-compliance test passed (surge up to 2 kV)
    • RoHS compliant

You might also like...

Quality and Reliability

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




Material Declaration**:

Marketing Status






RoHS Compliance Grade


(**) The Material Declaration forms available on 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

Swipe or click the button to explore more details Don't show this again
Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Packing Type
Country of Origin
Core Product
Available at distributors

Distributor availability of STEVAL-IHM029V2

Distributor Name
Region Stock Min. Order Third party link

Distributor reported inventory date:

No availability of distributors reported, please contact our sales office

STEVAL-IHM029V2 Active

Budgetary Price (US$)*/Qty:
Packing Type:
Country of Origin:

Part Number:




Core Product:

T1635T-8FP, VIPER16, STTH1R06

Distributor Name

Distributor reported inventory date:

Swipe or click the button to explore more details Don't show this again

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors