STMicroelectronics X-NUCLEO-IHM07M1 User manual

Introduction
The X-NUCLEO-IHM07M1 is a three-phase brushless DC motor driver expansion board based on the L6230 for STM32 Nucleo.
It provides an affordable and easy-to-use solution for driving three-phase brushless DC motor in your STM32 Nucleo project.
The X-NUCLEO-IHM07M1 is compatible with the ST Morpho connector and supports the addition of other boards which can be
stacked with onto a single STM32 Nucleo board.
The user can also mount the Arduino UNO R3 connector. The driver used on this expansion board is the L6230, a DMOS fully
integrated driver for three-phase brushless DC motors assembled in a PowerSO-36 package (L6230PD), with overcurrent and
thermal protection.
The L6230 driver is optimized for six-step and FOC algorithms thanks to independent current sensing.
Figure 1. X-NUCLEO-IHM07M1 three-phase brushless DC motor driver expansion board based on L6230 for STM32
Nucleo
Getting started with the X-NUCLEO-IHM07M1 motor driver expansion board
based on the L6230 for STM32 Nucleo
UM1943
User manual
UM1943 - Rev 2 - July 2021
For further information contact your local STMicroelectronics sales office.
www.st.com

1Getting started
1.1 Overview
The X-NUCLEO-IHM07M1 expansion board features:
• 3-phase driver for BLDC/PMSM motors
• Nominal operating voltage range from 8 V to 48 VDC
• 2.8 A output peak current (1.4 ARMS)
• Operating frequency up to 100 kHz
• Non dissipative overcurrent detection and protection
• Cross-conduction protection
• Thermal measuring and overheating protection
• Compatible with STM32 Nucleo boards
• Fully compatible with STM32 Motor Control SDK (X-CUBE-MCSDK-Y)
• Equipped with ST morpho connectors
• Three-shunt and single-shunt configurable jumpers for motor current sensing
• Hall/Encoder motor sensor connector and circuit
• Debug connector for DAC, GPIOs, etc.
• Potentiometer available for speed regulation
• User LED
• RoHS compliant
1.2 Target applications
• Low voltage PMSM motor driver
• Low power fans
• Power tools
• Industrial drives
1.3 Architecture
A generic motor control system can be schematized in:
• a control block which accepts user commands and drive the motor; an STM32 Nucleo development board
provides digital signals to properly implement motor driver control;
• a power block which is based on three-phase inverter topology. The power block core consists of the L6230
driver, which contains the necessary active power and analog components to perform low voltage PMSM
motor control;
• a motor - the X-NUCLEO-IHM07M1 can drive a low voltage BLDC/PMSM motor.
UM1943
Getting started
UM1943 - Rev 2 page 2/19

Figure 2. Motor control system
1.4 System setup
The X-NUCLEO-IHM07M1 expansion board (power block) has to be connected to an STM32 Nucleo
development board (control block) through the ST morpho connector, as shown below.
Figure 3. X-NUCLEO-IHM07M1 plugged on STM32 Nucleo
The X-NUCLEO-IHM07M1 is designed to be plugged onto many STM32 Nucleo development boards without
modifying any solder bridge. When stacked, the system is ready to operate with a BLDC/PMSM motor.
Note: For software details, refer to STM32 Motor Control SDK (X-CUBE-MCSDK-Y).
1.4.1 Hardware settings
Table 1. Jumper settings
Jumper Allowed configurations Default condition
JP1 Pull-up insertion (BIAS) in current sensing circuit OPEN
JP2 Op-amp gain modification in current sensing circuit OPEN
UM1943
System setup
UM1943 - Rev 2 page 3/19

Jumper Allowed configurations Default condition
JP3 Pull-up enabling in Hall/Encoder detection circuit CLOSED
J9 Supply the STM32 Nucleo development board through the X-NUCLEO-IHM07M1 expansion
board (1) OPEN
J5
Single/three shunt configuration.
Note: Set to single shunt by default.
2-3 CLOSED
J6
Single/three shunt configuration.
Note: Set to single shunt by default.
2-3 CLOSED
J7 Debug connector for DAC, available for probe connection OPEN
1. Remove J9 jumper before powering on J1.
Caution: When J9 is closed, do not exceed 12 V DC on J1 connector to prevent damaging the STM32 Nucleo board.
Important:
JP5 jumper on the STM32 Nucleo has to be connected between pin 2 and 3 to enable the STM32 Nucleo external power
supply.
Table 2. Screw terminal table
Screw terminal Function
J1 Motor power supply input (8 V- 48 V DC)
J2 3-phase motor connector
Figure 4. X-NUCLEO-IHM07M1 silk-screen (top layer)
The X-NUCLEO-IHM07M1 expansion board is equipped with ST morpho connectors (CN7 and CN10 male pin
headers are accessible on both sides of the board). They connect the power board to the STM32 Nucleo board.
All signals and power pins of the MCU are available on the ST morpho connector.
Table 3. ST morpho connector table
Connector Pin Default Signal Solder bridge
CN7 1 PC10 Enable_CH1-L6230 R58
UM1943
System setup
UM1943 - Rev 2 page 4/19

Connector Pin Default Signal Solder bridge
CN7
2PC11 Enable_CH2-L6230 R67
3 PC12 Enable_CH3-L6230 R72
4 PD2
5 VDD
6 E5V
7 BOOT0
8 GND
9 NC/PF6
10 NC
11 NC/PF7
12 IOREF
13 PA13
14 RESET
15 PA14
16 +3V3
17 PA15 Encoder A/Hall H1 R79
18 +5V Encoder/Hall PS
voltage
19 GND
20 GND
21 PB7
22 GND
23 PC13 Blue button
24 VIN J9
25 PC14
26 NC
27 PC15
28 PA0 Curr_fdbk_PhA R47
29 PH0/PF0/PD0
30 PA1 VBUS_sensing R51
31 PH1/PF1/PD1
32 PA4 DAC_Ch R76 N.M.
33 VLCD/VBAT
34 PB0 BEMF2_sensing R60
35 PC2 Temperature feedback R54
36 PC1 or PB9 (1) Curr_fdbk_PhB R48
37 PC3 BEMF1_sensing R59
38 PC0 or PB8(1) Curr_fdbk_PhC R50
CN10
1 PC9
2 PC8
3 PB8
UM1943
System setup
UM1943 - Rev 2 page 5/19

Connector Pin Default Signal Solder bridge
CN10
4PC6
5 PB9
6 PC5
7 AVDD
8U5V (2)
9 GND
10 NC
11 PA5 (3) GPIO/DAC/PWM R80
12 PA12 CPOUT R52
13 PA6(3) DIAG/ENABLE/BKIN1 R53
14 PA11 DIAG/ENABLE/BKIN2 R46
15 PA7(3) BEMF3_sensing R63
16 PB12
17 PB6
18 PB11/NC
19 PC7
20 GND
21 PA9 VH_PWM R64
22 PB2 LED RED R83
23 PA8 UH_PWM R56
24 PB1 POTENTIOMETER R78
25 PB10 Encoder Z/Hall H3 R84
26 PB15(3) BEMF3_sensing R66
27 PB4 CURRENT REF R77
28 PB14(3) DIAG/ENABLE/BKIN1 R49
29 PB5 GPIO/DAC/PWM R85
30 PB13(3) GPIO/DAC/PWM R82
31 PB3 Encoder B/Hall H2 R81
32 AGND
33 PA10 WH_PWM R70
34 PC4
35 PA2
36 NC/PF5
37 PA3
38 NC/PF4
1. Refer to Section 6.9 Solder bridges in UM1724 for further details.
2. U5V is 5 V power from ST-LINK/V2-1 USB connector and it rises before +5 V.
3. Only for STM32 Nucleo development boards based on STM32F302 MCUs:
• pin PA5 is on CN10/pin 30 and PB13 is on CN10/pin 11
• pin PA6 is on CN10/pin 28 and PB14 is on CN10/pin 13
• pin PA7 is on CN10/pin 26 and PB15 is on CN10/pin 13
UM1943
System setup
UM1943 - Rev 2 page 6/19

2Circuit description
2.1 Power section
2.1.1 L6230 driver with integrated three-phase bridge
The main section is based on the L6230. It is a DMOS fully-configurable driver for three-phase brushless BLDC/
PMSM motors. The supply voltage is provided through an external connector (J1) and with (J9) jumper settings,
it is possible to choose if the digital section (STM32 Nucleo board) must be supplied by USB or by the expansion
board. For these settings, please refer to Table 1. Jumper settings.
Figure 5. X-NUCLEO-IHM07M1 power section
1. J9 jumper
2. L6230 in PowerSO36 package
3. Power supply input
4. Motor connector
12
34
UM1943
Circuit description
UM1943 - Rev 2 page 7/19

The L6230 integrates a three-phase bridge which consists of six power MOSFETs. Using the N-channel power
MOSFET for the upper transistors in the bridge requires a gate drive voltage above the power supply voltage.
The bootstrapped supply (VBOOT) is obtained through an internal oscillator and a few external components to
implement a charge pump circuit as shown below.
Figure 6. X-NUCLEO-IHM07M1 – charge pump circuit
U11
L6230PD
IN1
9
CPOUT
24
VSA
4
N.C . 3
N.C . 2
GND 1
OUT3
32
N.C . 31
VBOOT
30
EN3 29
CP-
28
VCP
7
CP+
13
N.C . 14
OUT1
15
N.C . 16 N.C . 17
GND 18
GND 19
N.C . 20 N.C . 21
EN1
10
SENS1 12
N.C . 23 N.C . 6
IN2 26
SENS2 8
SENS3 25
EN2 27
IN3 11
OUT2
5
DIAG/EN 22
VSB
33
N.C . 34 N.C . 35
GND 36
EP 37
D12
SMBJ48A-TR
C12
10n 100V
C9
220nF, 16V
VIN+
C13
100nF/100V
C15
100uF, 63V
J16
RIN G
1
CP-
C11
100nF/100V
CPOUT
R21
33K
J1
CON2
1
2
CP+
CURR ENTR EF
CP+
D1
SMBD 7000
1 2
3
2.1.2 Overcurrent detection (OCP) and current sensing measurement
The L6230 driver implements overcurrent protection with an internal detection circuit that does not require an
external resistor.
The current is compared with an embedded current reference and the output signals a fault condition to the
DIAG pin that goes to ground. This pin, connected to the STM32 Nucleo board (BKIN timer function), detects this
condition and immediately disables the driving signals.
The current sensing input is connected to the sensing resistors Rsense (shown in the figure below). You can
choose between three-shunt or single-shunt configuration through J5 and J6 jumpers (refer to Table 1. Jumper
settings).
Figure 7. X-NUCLEO-IHM07M1 current sensing circuit
U11
L6230PD
IN1
9
CPOUT
24
VSA
4
N.C . 3 N.C . 2
GND 1
OUT3
32
N.C . 31
VBOOT
30
EN3 29
CP-
28
VCP
7
CP+
13
N.C . 14
OUT1
15
N.C . 16 N.C . 17
GND 18
GND 19
N.C . 20 N.C . 21
EN1
10
SENS1 12
N.C . 23 N.C . 6
IN2 26
SENS2 8
SENS3 25
EN2 27
IN3 11
OUT2
5
DIAG/EN 22
VSB
33
N.C . 34 N.C . 35
GND 36
EP 37
OUT1 OUT2
J2Motor
1 2 3
OUT3
J5
CON3 1
2
3
J6
CON3 1
2
3
R43
0.33 1W
R44
0.33 1W
R45
0.33 1W
SENS1
SENS2
3V3
SENS3
IN3
EN3
IN2
EN2
R25
39k
R26
39k C17
1nF/6.3V
R22
10K
Vshunt_2
EN3
IN3
EN2
IN2
DIAG/EN
Vshunt_3
SENS3
Vshunt_2
Vshunt_1
SENS1
Vshunt_2
Vshunt_1 Vshunt_2 Vshunt_3
UM1943
Power section
UM1943 - Rev 2 page 8/19

2.2 Analog section
2.2.1 Hall/Encoder motor speed sensor
The X-NUCLEO-IHM07M1 expansion board implements the Hall/Encoder sensor detecting circuit for speed
measurement. The motor sensor pins, through J3 connector and an analog circuit, are connected to the STM32
Nucleo board to detect the motor spin; a +5 V and GND are also provided for the sensor power supply.
For sensors that require external pull-up, use JP3 jumper (refer to Table 1. Jumper settings).
Figure 8. X-NUCLEO-IHM07M1 Hall/Encoder sensor circuit
HALL/ENCODER SENSOR
5V
GND
A+/H1
B+/H2
Z+/H3
3V3 3V3
5V
A+/H1
B+/H2
Z+/H3
R30
1k8
JP3
JUMPER
C20
10pF 10V
R32
1k8 R34
4K7 N.M.
R31
1k8
R33
4K7 N.M.
R29
10k
J3
Stripline m. 1x5
1
2
3
4
5
C22
10pF 10V
R28
10k
R27
10k
D4
BAT30KFILM
D3
BAT30KFILM
D2
BAT30KFILM
C19
100n
R35
4K7 N.M.
J4
RING
1
C21
10pF 10V
2.2.2 BEMF detection circuit
The X-NUCLEO-IHM07M1 expansion board provides two hardware solutions for motor position measuring: one
based on sensors (refer to Section 2.2.1 Hall/Encoder motor speed sensor) and the other based on sensorless
detection.
In six-step driving mode, one of the three phases is left in high impedance state. By comparing the voltage of this
phase to the center-tap voltage, you can detect the BEMF zero-crossing. This signal is acquired with an analog
circuit embedded on the board as shown below.
Figure 9. X-NUCLEO-IHM07M1 – BEMF detection circuit
BEMF DETECTION - SIX STEP
OUT1 OUT2 OUT3
GPIO_BEMF GPIO_BEMF GPIO_BEMF
BEMF1 BEMF3
3V3 3V3 3V3
3V3
GPIO_BEMF
BEMF1 BEMF2
GPIO_BEMF GPIO_BEMF
BEMF3
R39
10k
R36
2.2k
D10
BAT30KFILM
D6
BAT30KFILM
R41
10k
D9
BAT30KFILM
D5
BAT30KFILM
D8
BAT30KFILM
R38
2.2k
C23
0.1µF/6.3V
R40
10k
D7
BAT30KFILM
R37
2.2k
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Analog section
UM1943 - Rev 2 page 9/19

2.2.3 Bus voltage and temperature sensing circuit
The X-NUCLEO-IHM07M1 expansion board provides the hardware for bus voltage sensing and temperature
measurement. This signal is acquired with a resistor divider and an embedded NTC (close to L6230 driver) as
shown below.
Figure 10. X-NUCLEO-IHM07M1 – VBUS and temperature sensing circuit
VBUS_SENS
V I N +
V B U S
C 1 4
4 . 7n F / 10 V
R 1 8
9 . 31K 1 %
R 1 7
169 K 1 %
RS model 742-8420
Placed near the L6230 driver
3 V 3
Temperature feedback
R 1 9
N T C 10 K
2
1
R 2 0
4 K 7
C 1 0
10n F 10 V
UM1943
Analog section
UM1943 - Rev 2 page 10/19

3Schematic diagrams
Figure 11. X-NUCLEO-IHM07M1 circuit schematic (1 of 4)
C8
N.M. 100pF/6.3V
Vs hun t _3 _GND
Vs hun t _2 _GND
Vs hun t _1 _GND
Ove r a l l AV=1 . 53
3V3
3V3
3V3
3V3
3V3
3V3
3V3
Vshunt_1
Curr_fdbk1
Curr_fdbk2
CP+
Vshunt_2
Curr_fdbk3
Vshunt_3
JP1
FOC
R11
2.2k
C4
N.M. 100pF/6.3V
R13
680
C1
100nF10V
R9
2.2k
-
+
U10C
TSV994IPT
10
9
8
411
-
+
U10D
TSV994IPT
12
13
14
411
R10 2.2k
C3
680pF 10V
R30
R15
2.2k
R1
2.2k
C7
680pF 10V
R5 2.2k
R4
2.2k
R14
0
R8
0
R2
680
R12
2.2k
C5
680pF 10V
-
+
U10B
TSV994IPT
5
6
7
411
-
+
U10A
TSV994IPT
3
2
1
411
R7
680
R16
2.2k
R6
2.2k
C6
N.M. 100pF/6.3V
JP2 FOC
C2
4.7uF 10V
External operational amplifier
UM1943 - Rev 2 page 11/19
UM1943
Schematic diagrams

Figure 12. X-NUCLEO-IHM07M1 circuit schematic (2 of 4)
5V
GND
A+/ H1
B+/ H2
Z+/ H3
RS mode l 7 4 2- 84 2 0
Pl a c e d ne a r t he L62 30 dr i ve r
Vs h u nt _1 _ GND
Vs h u nt _2 _ GND Vs hu n t _3_GND
VBUS_SENS
SPEED
VIN+
3V3
3V3
3V3 3V3
5V
Temperature feedback
VBUS
A+/H1
B+/H2
Z+/H3
SPEED
Vshunt_1 Vshunt_2 Vshunt_3
R30
1k8
JP3
JUMPER
C20
10pF 10V
R32
1k8 R34
4K7 N.M.
R31
1k8
R33
4K7 N.M.
R29
10k
J3
Stripline m. 1x5
1
2
3
4
5
C22
10pF 10V
R28
10k
R19
NTC 10K
21
R27
10k
R20
4K7
C14
4.7nF/10V
D4
BAT30KFILM
D3
BAT30KFILM
C10
10nF 10V
D2
BAT30KFILM
C19
100n
R45
0.33 1W
R44
0.33 1W
R35
4K7 N.M.
R43
0.33 1W
R18
9.31K 1%
J4
RING
1
R17
169K 1%
R42
100K
C21
10pF 10V
Shunt resistorSpeed regulation
Hall/Encoder sensor
VBUS sensor
UM1943 - Rev 2 page 12/19
UM1943
Schematic diagrams

Figure 13. X-NUCLEO-IHM07M1 circuit schematic (3 of 4)
3Sh
1Sh
3Sh
1Sh
OUT1 OUT2 OUT3
OUT1 OUT2 OUT3
GPIO_BEMF GPIO_BEMF GPIO_BEMF
SENS1
SENS2
SENS3
CPOUT
IN1
EN1
EN3
IN3
EN2
IN2
CP+
BEMF1 BEMF3
CP-
VIN+
3V3 3V3 3V3
3V3
3V3
3V3
Vshunt_2
EN3
IN3
EN2
IN2
DIAG/EN
CURRENT REF
CPOUT
CP+
IN1
EN1
GPIO_BEMF
BEMF1 BEMF2
GPIO_BEMF GPIO_BEMF
BEMF3
Vshunt_3
SENS3
Vshunt_2
Vshunt_1
SENS1
Vshunt_2
R39
10k
J6
CON3
1
2
3
R21
33K
R36
2.2k
J16
RING
1
D10
BAT30KFILM
R25
39k
R23
10K
J2Motor
1 2 3
C13
100nF/100V
D6
BAT30KFILM
R41
10k
C17
1nF/6.3V
D1
SMBD 7000
1 2
3
J5
CON3
1
2
3
D9
BAT30KFILM
D5
BAT30KFILM
C18
10n-N.M.
C15
100uF, 63V
D8
BAT30KFILM
C12
10n 100V
U11
L6230PD
IN1
CPOUT
24
VSA
N.C. N.C.
GND
OUT3
32
N.C. 31
VBOOT
30
EN3 29
CP-
28
VCP
CP+
13
N.C. 14
OUT1
15
N.C. 16
N.C. 17
GND 18
GND 19
N.C. 20
N.C. 21
EN1
10
SENS1 12
N.C. 23
N.C.
IN2 26
SENS2
SENS3 25
EN2 27
IN3 11
OUT2
DIAG/EN 22
VSB
33
N.C. 34
N.C. 35
GND 36
EP 37
R38
2.2k
C16
100n,6.3V
C23
0.1uF/6.3V
R22
10K
R40
10k
C9
220nF, 16V
C11
100nF/100V
R26
39k
D7
BAT30KFILM
R37
2.2k
D12
SMBJ48A-TR
R24
39k
J1
CON2
1
2
Power connector
L6230 DMOS driver for three-phase brushless DC motor
BEMF detection - six step
Single/three shunt configuration
5
9
4
7
2
3
6
8
1
UM1943 - Rev 2 page 13/19
UM1943
Schematic diagrams

Figure 14. X-NUCLEO-IHM07M1 circuit schematic (4 of 4)
F3 0 2
F3 0 2
J27 ON:
1)12VMAX ON J26
2)JP5 (Nucleo pin 2,3)
2)JP1 (Nucleo) Removed
OPEN BY DEFAULT
F3 0 2
F3 0 2
PA8-UH
C7_1
C7_3
C7_5
C7_7
C7_13
C7_15
C7_17
C7_19
C7_21
C7_23
C7_25
C7_27
C7_29
C7_31
C7_33
C7_35
C7_37
C7_14 C6_3
C7_16
C7_18 C6_5
C7_20
C7_22
C7_24 C6_8
C7_28 C8_1
C7_38 C8_6
C7_36 C8_5
C7_34 C8_4
C7_30 C8_2
C7_32 C8_3
C7_2
C7_4
E5V C7_6
C7_8
C10_3C5_10
C10_7C5_8
C10_9C5_7
C10_11C5_6
C10_13C5_5
C10_15C5_4
C10_17C5_3
C10_19C5_2
C10_21C5_1
C10_5C5_9
C10_35C9_2
C10_29C9_5
C10_31C9_4
C10_25C9_7
C10_33C9_3
C10_27C9_6
C10_23C9_8
C10_37C9_1
C10_1 C10_2
C10_4
C10_6
C10_8
C10_10
C10_12
C10_14
C10_16
C10_18
C10_20
C10_22
C10_24
C10_26
C10_28
C10_30
C10_32
C10_34
C10_36
C10_38
C7_9
C7_11 C7_12
C6_1 N.C.
C6_2 +3V3
C6_6
PA6-BKIN
PA9-VH
PA10-WH
PA0 - PhA
PC1 - PhB
PC0 - PhC
PA1 - BUSV
PC2 - Temp. Sens.
PA15 - Enc. A/H1
PB3 - Enc. B/H2
PB10 - Enc. Z/H3
PA5/PB13
PC9 - GPIO
PC3 - ADC
PB0 - ADC
PA7 - ADC
PA4- DAC
PB4-PWM
PA5 - DAC
PA12- TIM1 ETR
VIN
PC12
PC11
PC10
PC13 - START/STOP (B1 BUTTON)
RESET - MCU RST (B2 BUTTON)
PA1 - EmbPGA
PA7 - EmbPGA
PB0 - EmbPGA
PB1
PB2
PA11
PB5-DAC PWM
N.C. C7_10
C6_7
C7_26
C6_4
C7_18
C7_17
C10_31
C10_25 Z+/H3
A+/H1
B+/H2
VIN+
3V3
3V3
5V
DIAG/EN
IN1
EN1
IN2
EN2
IN3
EN3
C10_14
C10_28
C10_13
C10_23
C7_1
C10_21
C7_2
C10_33
C7_3
C7_28
C7_38
C7_35
Curr_fdbk1
Curr_fdbk2
Curr_fdbk3
VBUS
Temperature feedback
C7_30
C10_15
C7_34
Vshunt_1
Vshunt_2
C10_26
Vshunt_3
CURRENT REFC7_32
C10_27
C10_11
C10_30
C10_29
C10_12
C10_1
C7_37
C7_34
C10_15
C10_26
CPOUT
GPIO_BEMF
BEMF1
BEMF2
BEMF3
C10_24
C10_22
SPEED
C7_24
C7_36
C7_30
R520
R470
R73 0
R81 0
R660
R590
R820
R58 0
R540
CN6
1
2
3
4
5
6
7
8
R69
N.M.13K 1%
R65 0
J8
RING
1
R46 0
R74
N.N. 4.99K
R64 0
R70 0
CN5
1
2
3
4
5
6
7
8
9
10
R800
R630
R68
N.N. 4.99K
R61
N.N. 4.99K
J7
Stripline m. 1x3
1
2
3
J9
JUMPER VIN 3A
12
R71 0-N.M.
R770
R79 0
CN10
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
R510
D11
RED
R480
R600
CN7
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
37 38
CN8
1
2
3
4
5
6
R550
R780
R500
R570
R67 0
R53 0
R84 0
R83
510
R62 N.M.13K 1%
R72 0
R56 0
R760-N.M.
R49 0
CN9
1
2
3
4
5
6
7
8
R75
N.M.13K 1%
R850
PWM Currents BEMF six-step
EmbPGA
User
Hall/Encoder sensor
STM32 Nucleo part used
DAC/REF
Arduino/STMorpho connector
UM1943 - Rev 2 page 14/19
UM1943
Schematic diagrams

4Bill of materials
Table 4. X-NUCLEO-IHM07M1 bill of materials
Item Q.ty Ref. Part/Value Description Manufacturer Order code
1 4 C1, C16,
C19, C23
100 nF 10 V X7R
±10% 0603
Ceramic multilayer
capacitors Any Any
2 1 C2 4.7 µF 10 V X7R
±20% 0805
Ceramic multilayer
capacitors TDK C2012X7R1A475M125A C
3 3 C3, C5, C7 680 pF 10 V C0G
±5% 0603
Ceramic multilayer
capacitors Any Any
4 3 C4, C6, C8 100 pF 6.3 V
X7R ±10% 0603
Ceramic multilayer
capacitors (not
mounted)
Any Any
5 1 C9 220 nF 16 V X7R
±10% 0603
Ceramic multilayer
capacitors Any Any
6 1 C10 10 nF 10 V ±10%
0603
Ceramic multilayer
capacitors Any Any
7 1 C18 10 nF 10 V X7R
±10% 0603
Ceramic multilayer
capacitors (not
mounted)
Any Any
8 2 C11, C13 100 nF 100 V
X7R ±10% 0603
Ceramic multilayer
capacitors Any Any
9 1 C12 10 n 100 V X7R
±10% 0603
Ceramic multilayer
capacitors Any Any
10 1 C14 4.7 nF 10 V X7R
±10% 0603
Ceramic multilayer
capacitors Any Any
11 1 C15
100 µF 63 V 0.2
SMD 10 mm x
10.5 mm
Aluminium
electrolytic
capacitor
Nichicon UUX1J101MNL1GS
Panasonic EEEFK1J101P
Farnell 2254433
12 1 C17 1 nF 6.3 V X7R
±10% 0603
Ceramic multilayer
capacitor Any Any
13 3 C20, C21,
C22
10 pF 10 V C0G
±5% 0603
Ceramic multilayer
capacitor Any Any
14 1 D1 SMBD 7000 220
mA SOT-23 Signal diode Infineon SMBD 7000
15 9
D2, D3, D4,
D5, D6, D7,
D8, D9,
D10
BAT30KFILM 30
V 0.3 A SOD-523
30 V, 300 mA
SMD general
purpose signal
Schottky diode
ST BAT30KFILM
16 1 D11 RED, SMD SMD
0603 LED Lite-on LTST-C193KRKT-5A
17 4 JP1, JP2,
JP3, J9
2-way strip line
male 2.54 mm
TH 2.54 mm
pitch
Jumpers Any Any
18 1 J1
2 way 3.81mm
PCB terminal
block TH 3.81
mm pitch
Input connector
Any Any
4UCONN 12342
UM1943
Bill of materials
UM1943 - Rev 2 page 15/19

Item Q.ty Ref. Part/Value Description Manufacturer Order code
19 1 J2
3 way 3.81mm
PCB terminal
block TH 3.81
mm pitch
Motor connector
Any Any
4UCONN 12335
20 1 J3
Stripline m. 1x5
5-way strip line
2.54 mm TH 2.54
mm pitch
Jumper Any Any
21 3 J4, J8, J16 RING TH Jumpers Vero
Technologies 20-2137
22 3 J5, J6, J7
CON3 Stripline
m. 1x3 3-way
strip line 2.54
mm TH 2.54 mm
pitch
Jumpers Any Any
23 2 CN7, CN10
ST_MORPHO_1
9x2 TH 2.54 mm
pitch
38-pin elevated
socket morpho
connector
Samtec ESQ-119-24-T-D
24 2 CN6, CN9
CONN8 TH 2.54
mm pitch (not
mounted)
8-pin elevated
socket
Samtec ESQ-108-24-T-S
4UCONN 15284
25 1 CN5
CONN10 TH
2.54 mm pitch
(not mounted)
10-pin elevated
socket
Samtec ESQ-110-24-T-S
4UCONN 15286
26 1 CN8
CONN6 TH 2.54
mm pitch (not
mounted)
6-pin elevated
socket
Samtec ESQ-106-24-T-S
4UCONN 15282
27 13
R1, R4, R5,
R6, R9,
R10, R11,
R12, R15,
R16, R36,
R37, R38
2.2 kOhm 0.1 W
±1% 0603 SMD resistors Any Any
28 3 R2, R7,
R13
680 Ohm 0.1 W
0603 SMD resistors Any Any
29 34
R3, R8,
R14, R46,
R47, R48,
R49, R50,
R51, R52,
R53, R54,
R55, R56,
R57, R58,
R59, R60,
R63, R64,
R65, R66,
R67, R70,
R72, R73,
R77, R78,
R79, R80,
R81, R82,
R84, R85
0 Ohm 0.1 W
0603 SMD resistors Any Any
30 1 R17 169 kOhm 0.1 W
±1% 0603 SMD resistor Vishay CRCW0603169KFKEA
31 1 R18 9.31 kOhm 0.1 W
±1% 0603 SMD resistor Panasonic ERJ3EKF9311V
32 1 R19 NTC 10 kOhm
±1% NTC thermistor TDK NTCG103JF103F
UM1943
Bill of materials
UM1943 - Rev 2 page 16/19

Item Q.ty Ref. Part/Value Description Manufacturer Order code
33 1 R20 4.7 kOhm 0.1 W
0603 SMD resistor Any Any
34 1 R21 33 kOhm 0.1 W
0603 SMD resistor Any Any
35 5
R22, R23,
R27, R28,
R29
10 kOhm 0.1 W
0603 SMD resistors Any Any
36 3 R39, R40,
R41
10 kOhm 0.25 W
0805 SMD resistors Panasonic ERJT06J103V
37 3 R24, R25,
R26
39 kOhm 0.1 W
0603 SMD resistors Any Any
38 3 R30, R31,
R32
1.8 kOhm 0.1 W
0603 SMD resistors Any Any
39 3 R33, R34,
R35
4.7 kOhm 0.1 W
0603
SMD resistors (not
mounted) Any Any
40 1 R42 100 kOhm 1/2 W
±10% Trimmer resistor Bourns 3386P-1-104LF
41 3 R43, R44,
R45
0.33 Ohm 1 W
±1% 2512 Shunt resistor Panasonic ERJ1TRQFR33U
42 3 R61, R68,
R74
4.99 kOhm 0.1W
0603
SMD resistors (not
mounted) Any Any
43 3 R62, R69,
R75
13 kOhm 0.1W
0603
SMD resistors (not
mounted) Any Any
44 2 R71, R76 0.1 W N.M. 0603 SMD resistors (not
mounted) Any Any
45 1 R83 510 Ohm 0.1 W
0603 SMD resistor Any Any
46 1 U10 TSV994IPT
TSSOP
Wide bandwidth
(20 MHz) rail-to-
rail input/output 5
V CMOS op-amp
ST TSV994IPT
47 1 U11 PowerSO
DMOS driver
for three-phase
brushless DC
motors
ST L6230PD
48 6 Female 2.54 mm Jumper Any Any
49 1 SMBJ48A-TR
SMB
600 W, 48 V TVS
in SMB ST SMBJ48A-TR
UM1943
Bill of materials
UM1943 - Rev 2 page 17/19

Revision history
Table 5. Document revision history
Date Version Changes
17-Sep-2015 1 Initial release.
20-Jul-2021 2
Updated Introduction,
Section 1.1 Overview,
Section 1.4 System setup,
Section 1.4.1 Hardware settings and
Section 2.1.1 L6230 driver with
integrated three-phase bridge.
Text changes throughout the document.
UM1943
UM1943 - Rev 2 page 18/19

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UM1943
UM1943 - Rev 2 page 19/19