STEVAL-IHM029V1 STMicroelectronics

UM1856 User manual STEVAL-IHM029V2: Universal motor control evaluation board based on the STM8S103F2 MCU and T1235T Triac Introduction This evaluation board specifically targets new vacuum cleaners which, from September 2017, must be limited to a maximum input power of 900 W to be compliant with the 2009/125/EC directive. The evaluation board is based on the 20-pin 8-bit STM8S103 MCU running at 16 MHz (user-trimmable internal RC clock), featuring 4 kBytes of flash memory, a 10-bit A/D converter, 8-/16-bit timers, communication interfaces and 640 bytes of EPROM. The power supply circuitry is based on VIPer16L, an off-line converter with an 800 V avalanche rugged power section operating at 60 kHz. The STEVAL-IHM029V2 performs phase angle control of any universal motor up to 900 W, thanks to the T1235T-8T, a 12 A 800 V T-series TRIAC which is manufactured using high- temperature processes and can hence maintain operation up to 150 C. In order to limit the in-rush current, the evaluation board features a soft-start routine and a smooth power change function.This routine renders the board compliant with the IEC 61000-3-3 standard on voltage fluctuation and flicker. The evaluation 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). When in stand-by mode, the overall STEVAL-IHM029V2 power consumption is below 300 mW. Figure 1. STEVAL-IHM029V2 evaluation board February 2015 DocID027359 Rev 1 1/22 www.st.com 22Contents UM1856 Contents 1 Safety instructions 3 2 Main features . 4 3 Target applications 5 4 Block diagram 6 5 Schematic . 7 6 Bill of material 8 7 Functional description 11 8 Scope waveforms 12 9 EMC test results . 15 9.1 Electrical fast transient / burst immunity test results (IEC-61000-4-4) . 15 9.2 Surge immunity test results (IEC-61000-4-5) 15 10 How to connect the STEVAL-IHM029V2 16 10.1 How to operate the STEVAL-IHM029V2 . 16 10.2 Firing angle table . 16 10.3 The STEVAL-IHM029V2 layout 17 11 Ordering information . 19 12 References and related material 20 13 Revision history . 21 2/22 DocID027359 Rev 1