ST X-NUCLEO-IHM08M1 User manual

Chipsmall Limited consists of a professional team with an average of over 10 year of expertise in the distribution
of electronic components. Based in Hongkong, we have already established firm and mutual-benefit business
relationships with customers from,Europe,America and south Asia,supplying obsolete and hard-to-find components
to meet their specific needs.
With the principle of “Quality Parts,Customers Priority,Honest Operation,and Considerate Service”,our business
mainly focus on the distribution of electronic components. Line cards we deal with include
Microchip,ALPS,ROHM,Xilinx,Pulse,ON,Everlight and Freescale. Main products comprise
IC,Modules,Potentiometer,IC Socket,Relay,Connector.Our parts cover such applications as commercial,industrial,
and automotives areas.
We are looking forward to setting up business relationship with you and hope to provide you with the best service
and solution. Let us make a better world for our industry!
Contact us
Tel: [phone] Fax: [phone]
Email & Skype: [email protected]om Web: www.chipsmall.com
Address: A1208, Overseas Decoration Building, #122 Zhenhua RD., Futian, Shenzhen, China
  

May 2016
DocID028716 Rev 2
1/29
www.st.com
UM1996
User manual
Getting started with X-NUCLEO-IHM08M1 low-voltage BLDC motor
driver expansion board based on STL220N6F7 for STM32 Nucleo
Introduction
The X-NUCLEO-IHM08M1 is a three-phase brushless DC motor driver expansion board based on
STripFET™ F7 Power MOSFET STL220N6F7 for STM32 Nucleo. It provides an affordable and easy-to-
use solution for driving a three-phase brushless DC motor in your STM32 Nucleo project. The X-
NUCLEO-IHM08M1 is compatible with the ST morpho connector and supports further stacking of
additional boards on a single STM32 Nucleo board. You can also mount the Arduino™ UNO R3
connector.
The X-NUCLEO-IHM08M1 is fully configurable and ready to support different closed loop control
scenarios based on sensorless or sensor mode control, and it is compatible with three-shunt or single-
shunt current sense measuring. The L6398 IC driver used on this STM32 Nucleo expansion board is a
single-chip half bridge gate driver for the N-channel power MOSFET. This combination of the L6398
gate driver and the STL220N6F7 Power MOSFET forms a high current power platform for BLDC
motors, while the digital section supported by the STM32 Nucleo board allows for a 6-step or FOC
control algorithm solution, which you can select via the firmware. This document describes how to
configure the X-NUCLEO-IHM08M1 expansion board to operate with STM32 Nucleo board.
Figure 1: X-NUCLEO-IHM08M1 low-voltage BLDC motor driver expansion board based on STL220N6F7 for
STM32 Nucleo

Contents
UM1996
2/29
DocID028716 Rev 2
Contents
1System overview ............................................................................. 5
1.1 Main characteristics ..........................................................................5
1.2 Target applications............................................................................5
2Getting started................................................................................. 6
2.1 System architecture ..........................................................................6
2.2 Building the system ...........................................................................6
2.2.1 Hardware settings............................................................................... 8
3Board schematics.......................................................................... 12
4Circuit description......................................................................... 15
4.1 Power section.................................................................................. 15
4.1.1 L6398 gate driver and STL220N6F7 STripFET™ F7 Power
MOSFET .......................................................................................................... 15
4.1.2 Overcurrent detection (OCP) and current sensing measurement.... 16
4.2 Analog section................................................................................. 17
4.2.1 Hall/Encoder motor speed sensor .................................................... 17
4.3 BEMF detection circuit .................................................................... 18
5Bill of materials.............................................................................. 19
6X-NUCLEO-IHM08M1 STM32 PMSM FOC SDK parameters ........ 27
7Revision history ............................................................................ 28

UM1996
List of tables
DocID028716 Rev 2
3/29
List of tables
Table 1: Jumper settings ............................................................................................................................8
Table 2: Screw terminals ............................................................................................................................8
Table 3: ST morpho connector –CN7 ........................................................................................................9
Table 4: ST morpho connector –CN10 ....................................................................................................10
Table 5: BoM (1 of 2) ................................................................................................................................19
Table 6: BoM (2 of 2) ................................................................................................................................23
Table 7: Document revision history ..........................................................................................................28

List of figures
UM1996
4/29
DocID028716 Rev 2
List of figures
Figure 1: X-NUCLEO-IHM08M1 low-voltage BLDC motor driver expansion board based on
STL220N6F7 for STM32 Nucleo ................................................................................................................1
Figure 2: System functional hardware blocks .............................................................................................6
Figure 3: X-NUCLEO-IHM08M1 plugged on STM32 Nucleo board ...........................................................7
Figure 4: X-NUCLEO-IHM08M1 top layer with silk-screen.........................................................................9
Figure 5: Power section ............................................................................................................................12
Figure 6: Current sensing and B-emf circuit .............................................................................................12
Figure 7: Auxiliary power supply circuit ....................................................................................................13
Figure 8: Sensing and Hall/Encoder circuit...............................................................................................13
Figure 9: Analog conditioning and current protection circuit.....................................................................13
Figure 10: MCU pin-out assignment .........................................................................................................14
Figure 11: X-NUCLEO-IHM08M1 –power section...................................................................................16
Figure 12: X-NUCLEO-IHM08M1 –OCP circuit.......................................................................................16
Figure 13: X-NUCLEO-IHM08M1 –Current sensing circuit (1 of 3).........................................................17
Figure 14: X-NUCLEO-IHM08M1 –Current sensing circuit (2 of 3).........................................................17
Figure 15: X-NUCLEO-IHM08M1 –Current sensing circuit (3 of 3).........................................................17
Figure 16: X-NUCLEO-IHM08M1 –Hall/Encoder sensor circuit ..............................................................17
Figure 17: X-NUCLEO-IHM08M1 –BEMF detection circuit .....................................................................18
Figure 18: X-NUCLEO-IHM08M1 –VBUS and temperature sensing circuit............................................18

UM1996
System overview
DocID028716 Rev 2
5/29
1 System overview
1.1 Main characteristics
Three-phase driver board for BLDC/PMSM motors
Nominal operating voltage range from 8 V to 48 V DC
15 ARMS output current
Operating frequency selectable by firmware
Overcurrent detection and protection (30 APEAK)
Thermal measuring and overheating protection
Full compatible with ST Six Step or ST FOC control algorithm
Full support for sensorless and sensor mode
3-shunt and 1-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
Compatible with STM32 Nucleo boards
Equipped with ST morpho connectors
RoHS compliant
1.2 Target applications
The target applications for the X-NUCLEO-IHM08M1 include:
Low voltage PMSM motor driver
Low power fans
Power tools
Industrial drives

Getting started
UM1996
6/29
DocID028716 Rev 2
2 Getting started
2.1 System architecture
A generic motor control system can be basically schematized as the arrangement of three
main functional blocks (see System functional hardware blocks):
Control block accepts user commands to drive a motor. The X-NUCLEO-IHM08M1 is
based on the STM32 Nucleo board, which provides all the digital signals for effective
motor driving control.
Power block is based on the 3-phase inverter topology. The core of the power block
is the embedded L6398 driver, which contains all the necessary active power and
analog components to perform low voltage PMSM motor control.
Motor the X-NUCLEO-IHM08M1 is able to proper drive a low voltage BLDC/PMSM
motor.
This section describes how to set up different hardware parts before writing and executing
an application on the STM32 Nucleo board with the low-voltage BLDC motor driver
expansion board.
Figure 2: System functional hardware blocks
2.2 Building the system
The X-NUCLEO-IHM08M1 expansion board (Power block in the figure above) is a
complete hardware development platform for the STM32 Nucleo board allowing effective
evaluation of motor control solutions for single BLDC/PMSM motors. For regular board
operation, please follow the steps below:
1. Plug the expansion board on an STM32 Nucleo main board (Control block) through
the ST morpho connector; there is only one position allowed for this connection.
Ensure that the blue (B1) and black (B2) buttons on the STM32 Nucleo board are not
covered, as shown below.

UM1996
Getting started
DocID028716 Rev 2
7/29
Figure 3: X-NUCLEO-IHM08M1 plugged on STM32 Nucleo board
The interconnection between the STM32 Nucleo board and the X-NUCLEO-IHM08M1
expansion board is designed for full-compatibility with a wide range of STM32 Nucleo
boards without any solder bridge modifications, except for the removal of resistor R60 on
the NUCLEO-F401RE Nucleo board if the X-CUBE-SPN8 firmware is installed.
The stacked system is ready to operate with the connection of a BLDC/PMSM motor. For
correct use, please follow the hardware and software settings. For software details, please
refer to X-CUBE-SPN8 documentation available on www.st.com.
1. Connect the three motor wires U,V,W to the J16 connector.
2. To select the control algorithm (6-step or FOC), ensure no voltage supply is
connected.
On the STM32 NUCLEO board, set jumpers: JP1 open, JP5 (PWR) on E5V side, JP6
(IDD) closed.On the X-NUCLEO-IHM08M1 expansion board, set jumpers: J9 open,
JP3 closed.
For 6-step control (X-CUBE-SPN8 FW), set jumpers: JP1 and JP2 open, J5&J6
on the 1-Sh side. Keep capacitor C5 mounted; in case of poor motor current
regulation during startup, reduce its value.
For FOC control (STSW-STM32100 FW), set jumpers: JP1 and JP2 closed,
J5&J6 on the 3-Sh side. Remove capacitors C3, C5 and C7.
3. Connect the DC supply voltage to the J1 connector. An external power supply is
required to power up the power board and the STM32 Nucleo board. Be sure to
supply the right power for the connected motor; (e.g., max. 12V and 2A for the
BR2804 motor).

Getting started
UM1996
8/29
DocID028716 Rev 2
When using a different motor rated greater than 12 V, keep jumper J9 on the
power board open before applying power-on voltage at J1 to avoid damaging the
Nucleo board. To supply the STM32-NUCLEO via usb, connect jumper JP5
between PIN 1 and PIN2. For further details on Nucleo settings, refer to UM1724
at http://www.st.com.
2.2.1 Hardware settings
By default, the X-NUCLEO-IHM08M1 provides the power supply voltage for STM32 Nucleo
board (+5V on E5V) independently through the power voltage applied at the J1 connector.
Removing resistor R170 on the expansion board, you can disconnect internal voltage
regulation and select jumper J9 to supply the STM32 Nucleo board directly from J1
connector (see Table 1: "Jumper settings") if, for instance, higher conversion efficiency is
required. For this last configuration please read the recommendation below.
Table 1: Jumper settings
Jumper
Permitted Configurations
Default
Condition
JP1
Selection for pull-up insertion (BIAS) in current sensing circuit
OPEN
JP2
Selection for operational amplifier gain modification in current sensing
circuit
OPEN
JP3
Selection for enabling pull-up in Hall/Encoder detection circuit
CLOSED
J9
Selection to supply the STM32 Nucleo board through the X-NUCLEO-
IHM08M1.
Note: You should remove jumper J9 before power-on at J1.
Do not provide more than 12 V DC on J1 when J9 is closed or you risk
damaging the STM32 Nucleo board. Jumper JP5 on the STM32 Nucleo
board must be connected between PIN 2 and 3 to enable external
powering of the STM32 Nucleo board.
OPEN
J5
Selection for single/three shunt configuration. It is set to single shunt by
default
1Sh
J6
Selection for single/three shunt configuration. It is set to single shunt by
default
1Sh
J7
Debug connector for DAC. It is available for probe connection
OPEN
Table 2: Screw terminals
Screw
Terminal
Function
J1
Motor power supply input (8 V to 48 V)
J16
3-phase motor connector

UM1996
Getting started
DocID028716 Rev 2
9/29
Figure 4: X-NUCLEO-IHM08M1 top layer with silk-screen
The X-NUCLEO-IHM08M1 power block features the ST morpho male pin header
connectors (CN7 and CN10) accessible on both sides of the board, which can be used to
connect this power board to the STM32 Nucleo board. All the MCU signal and power pins
are available on the ST morpho connector.
For further details, please refer to UM1724 document (5.12 STMicroelectronics morpho
connector) available on website www.st.com.
Table 3: ST morpho connector –CN7
Pin
Default
Signal
Solder Bridge
1
PC10
2
PC11
3
PC12
4
PD2
5
VDD
6
E5V
+5 V for STM32 Nucleo supply
R170
7
BOOT0
8
GND
9
NC/PF6
10
NC
11
NC/PF7
12
IOREF
13
PA13
14
RESET
15
PA14