February 2015
DocID027368 Rev 1
1/4
For further information contact your local STMicroelectronics sales
office
www.st.com
STEVAL-IHM029V2
Universal motor control evaluation board based on the
STM8S103F2 MCU and T1235T Triac
Data brief
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
Description
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.
Schematic diagram
STEVAL-IHM029V2
2/4
DocID027368 Rev 1
1 Schematic diagram
Figure 1: STEVAL-IHM029V2 circuit schematic
Neutral
Line
NRST
Line
Line
SWIM
ZVS
NRST
SWIM
VDD
V-12
VDD
VDD
VDD VDD
VDD
VDD
VDD
VDD
VDD
VDD
-12V -5V
0V
VSS
A2
Gate
A1
Debugger
MAINS
Motor
230V~
50Hz
C5 nc
DL5
LED
+
C8
100u
25V
+
RV1
300V
TP1
R31 820
+C3
4u7
400V
+
1
2
3
4
J3
CON4
R25
220k
R3 nc
R2 nc
R24
220k
D5
STTH1R06
R5 90k
+
C9
10u
16V
+
1
2
J1
CON2
C12
1u
DL4
LED
R26
75
TP2
VIN
2VOUT 3
GND
1
U2
L7905CP
DL1
LED
R30 820
C10
100n
+C6
10u
25V
+
DL3
LED
C1
47n
275V~ X2
R28 820
L1
1m H
R4
33k
D2
1N4007
TR1
T1235T-8T
R32 820
D6
P6KE400CA
D3
STTH1R06
C23
10n
P1
50K
C11
10n
C7
100n
PB4/I2C_SCL 12
PC3(HS)/TIM1_CH313
PC4(HS)/AIN2/TIM1_CH4/CLK_CCO14
PC5(HS)/SPI_SCK 15
PC6(HS)/SPI_MOSI 16
BEEP /UART1_CK/PD4(HS)
1
PD3(HS)/AIN4/TIM2_CH2/ADC_ETR 20
PD2(HS)/AIN3 19
TIM2_CH3/(HS)PA3
10
I2C_SDA/PB511
PC7(HS)/SPI_MISO 17
PD1(HS)/SWIM 18
UART1_TX/AIN5/PD5(HS)
2
UART1_RX/AIN6/PD6(HS)
3
NRST 4
OSCIN/PA1
5
OSCOUT/PA2
6
VSS7
VCAP 8
VDD 9
U3
STM8S103F2P6
R27 820
D4
STTH1R06
1
2
J2
CON2
C22
1n
GND 1
FB 4
LIM 3
VDD 2
COMP 5
DRAIN1
7
DRAIN2
8
U1
VIPer16L
R1
47 2W
DL6
LED
D1
1N4007
DL2
LED
C4 1n
+C2
4u7
400V
+L2
470u H
L2
470u H
R29 820
GSPG140 1151535SG
STEVAL-IHM029V2
Revision history
DocID027368 Rev 1
3/4
2 Revision history
Table 1: Document revision history
Date
Rev
Changes
02-Feb-2015
1
First release.
STEVAL-IHM029V2
4/4
DocID027368 Rev 1
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST
products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the
design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2015 STMicroelectronics – All rights reserved
