ST IHM029V1 User Manual

2000 W universal motor control demonstration board

based on the STM8S103F2 MCU and T1235H Triac

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: 2000 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 T1235H high-temperature

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

STEVAL-IHM029V1

Data brief

STEVAL-IHM029V1

The power supply circuitry is based on the
VIPer16L, an off-line converter with an 800 V
avalanche-rugged power section, operating at 60
kHz.

The STEVAL-IHM029V1 can control any universal
motor up to 2000 W, thanks to the T1235H, a 12 A
600 V high temperature Triac. The motor control
is based on phase-angle.

In order to limit the in-rush current and possible
current peaks, the demonstration board features a
soft-start routine and a smooth power change
function.

Description

The STEVAL-IHM029V1 is a low-cost universal
motor control demonstration board designed for
the home appliance market, with particular focus
on vacuum cleaners, food processors and power
tools.

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-IHM029V1 has an
overall standby power consumption below 300
mW.

This system features the 20-pin, 8-bit
STM8S103F2 microcontroller running at 16 MHz
(RC 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 E

June 2010 Doc ID 17284 Rev 1 1/4

For further information contact your local STMicroelectronics sales office.

2

PROM.

www.st.com

4

Schematic diagram STEVAL-IHM029V1

1 Schematic diagram

Figure 1. STEVAL-IHM029V1 circuit schematic

2/4 Doc ID 17284 Rev 1