May 2010
Doc ID 17259 Rev 1
1/23
UM0922
User manual
STEVAL-IHM029V1:
2000 W universal motor control based on the STM8S103F2
Introduction
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.
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
2
PROM.
The power supply circuitry is based on the VIPer16LN, 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.
The board has 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.
Figure 1.
STEVAL-IHM029V1
www.st.com
