ST STEVAL-SPIN3202 User manual

September 2017
DocID030941 Rev 1
1/20
www.st.com
UM2278
User manual
Getting started with the STEVAL-SPIN3202 evaluation board,
advanced BLDC controller with embedded STM32 MCU
Introduction
The STEVAL-SPIN3202 3-phase brushless DC motor driver board is based on the STSPIN32F0A 3-
phase controller with integrated STM32 MCU.
It implements a single shunt resistor current reading topology and provides an easy-to-use solution for
device evaluation in different applications such as home appliances, fans, drones and power tools.
The board is designed for the sensored or sensorless six-step algorithm and Field Oriented Control with
single shunt current sensing.
Figure 1: STEVAL-SPIN3202 evaluation board

Contents
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Contents
1Hardware and software requirements............................................5
2Getting started.................................................................................6
2.1 Hardware description and configuration............................................6
2.2 Circuit description..............................................................................8
2.2.1 STEP/FOC selection .......................................................................... 8
2.2.2 Hall/encoder_connector motor speed sensor .................................... 9
2.2.3Overcurrent detection and current sensing measurement................. 9
2.2.4 Bus voltage sensing circuit............................................................... 10
2.2.5 Hardware user interface................................................................... 10
2.2.6 Debug............................................................................................... 10
2.2.7 Bill of materials ................................................................................. 11
2.2.8 Schematic diagrams......................................................................... 15
3Revision history ............................................................................19

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List of tables
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List of tables
Table 1: Hardware setting jumpers.............................................................................................................7
Table 2: Connectors, jumpers and test points............................................................................................7
Table 3: Hall/encoder connector (J4)..........................................................................................................9
Table 4: Overcurrent thresholds .................................................................................................................9
Table 5: STEVAL-SPIN3202 bill of materials ...........................................................................................11
Table 6: Document revision history ..........................................................................................................19

List of figures
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List of figures
Figure 1: STEVAL-SPIN3202 evaluation board .........................................................................................1
Figure 2: STEVAL-SPIN3202 evaluation board: jumper and connector positions.....................................6
Figure 3: STEVAL-SPIN3202 schematic (1 of 4) .....................................................................................15
Figure 4: STEVAL-SPIN3202 schematic (2 of 4) .....................................................................................16
Figure 5: STEVAL-SPIN3202 schematic (3 of 4) .....................................................................................17
Figure 6: STEVAL-SPIN3202 schematic (4 of 4) .....................................................................................18

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Hardware and software requirements
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1 Hardware and software requirements
Using the STEVAL-SPIN3202 evaluation board requires the following software and
hardware:
a Windows ®PC (XP, Vista 7 , Windows 8, Windows 10 ) to install the software
package;
a mini-B USB cable to connect the STEVAL-SPIN3202 evaluation board to the PC;
the STSW-SPIN3202 firmware example or the STM32 PMSM six-step software
development kit (STSW-STM32100) (both available on www.st.com);
a 3-phase brushless DC motor with compatible voltage and current ratings;
an external DC power supply.

Getting started
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2 Getting started
To use the board:
1. Check the jumper position according to the target configuration (see Section 2.2.1:
"STEP/FOC selection")
2. Connect the motor to J3 connector taking care of the motor phases sequence
3. Supply the board via J2 connector input 1 and 2; the DL1 (red) LED turns on
4. Connect the board to the PC through the USB cable
5. Develop your application using the code examples provided. The STSW-SPIN3202
firmware example also provides pre-compiled binaries that are ready-to-use.
The board maximum ratings are:
power stage supply voltage (VS) from 6.7 V to 45 V;
motor phase current up to 15 Arms.
2.1 Hardware description and configuration
Figure 2: STEVAL-SPIN3202 evaluation board: jumper and connector positions

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Table 1: Hardware setting jumpers
Jumper
Permitted configurations
Default condition
JP1
Selection of VREG connected to V motor
OPEN
JP2
Selection motor power supply connected to DC power supply
CLOSED
JP3
Selection Hall encoder supply to USB (1)/VDD (3) power supply
1-2 CLOSED
JP4
Selection reset of ST-LINK (U4)
OPEN
JP5
Selection PA0 connected to Hall 1
OPEN
JP6
Selection PA1 connected to Hall 2
OPEN
JP7
Selection PA2 connected to Hall 3
OPEN
JP8
Selection mode 6STEP(1)/FOC (3)
1-2 CLOSED
J11
Selection mode FOC
CLOSED
J12
Selection mode 6STEP
OPEN
JP9
Selection PA0 connected to OUT U
CLOSED
JP10
Selection PA1 connected to OUT V
CLOSED
JP11
Selection PA2 connected to OUT W
CLOSED
Table 2: Connectors, jumpers and test points
Name
Pin
Label
Description
J1
1-2
J1
Motor power supply
J2
1-2
J2
Device main power supply (VM)
J3
1-2-3
U, V, W
3-phase BLDC motor phase connection
J4
1-2-3
J4
Hallsensors/encoder connector
4-5
J4
Hall sensors/encoder supply
J5
-
J5
USB input ST-LINK
J6
1
3v3
ST-LINK power supply
2
CLK
SWCLK of ST-LINK
3
GND
GND
4
DIO
SWDIO of ST-LINK
J7
1-2
J7
UART (ST-LINK Virtual COM)
J8
1-2
J8
ST-LINK reset
J9
1-2
BOOT
Boot mode
J10
1-2
RX/TX
Bootloader UART connector
TP1
-
VREG
12 V voltage regulator output
TP2
-
GND
GND
TP3
-
VDD
VDD
TP4
-
SPEED
Speed potentiometer output
TP5
-
5V
USB supply voltage
TP6
-
VBUS
Bus voltage feedback

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Name
Pin
Label
Description
TP7
-
OUT_U
Output U
TP8
-
TP8
Output op amp sense 2
TP9
-
TP9
PA5 GPIO
TP10
-
GND
GND
TP11
-
OUT_V
Output V
TP12
-
TP12
GPIO BEMF
TP13
-
OUT_W
Output W
TP14
-
3V3
3V3 ST-LINK
TP15
-
TP15
Output op amp sense 3
TP16
-
CLK
SWD_CLK
TP17
-
I/O
SWD_IO
2.2 Circuit description
The STEVAL-SPIN3202 evaluation board provides a complete single-shunt six-step
solution consisting of an STSPIN32F0A (advanced BLDC controller with an embedded
STM32 MCU) and a triple half-bridge power stage with the NMOS STD140N6F7.
The STSPIN32F0A autonomously generates all the required supply voltages starting from
the motor supply: the internal DC/DC buck converter provides 3.3 V and the internal linear
regulator provides 12 V for the gate drivers.
The current feedback signal conditioning is performed through the operational amplifiers
embedded in the device and an internal comparator performs overcurrent protection via the
shunt resistor.
Two user buttons, two LEDs and a trimmer are available to implement simple user
interfaces (e.g., starting/stopping the motor and set target speed).
The STEVAL-SPIN3202 evaluation board supports the quadrature encoder and digital Hall
sensors for motor position feedback. It also provides the circuitry to sense the motor BEMF
(sensorless operation).
The board includes an ST-LINK-V2 which allows the user to debug and download firmware
without any extra hardware.
The board also supports sensored or sensorless Field Oriented Control algorithm with
single-shunt sensing.
2.2.1 STEP/FOC selection
The user can select between six-step and Field Oriented Control modes by selecting
different jumpers on the board.
By default, the six-step mode is selected as per the following configuration:
jumper connected on J12 open and jumper J11 closed;
jumper connected on JP8 between pin 1 and 2 (6 STEP position).
The Field Oriented Control mode is selected as follows:
jumper connected on J12 closed and remove jumper from J11;
jumper connected on JP8 between pin 2 and 3 (FOC position).

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2.2.2 Hall/encoder_connector motor speed sensor
The STEVAL-SPIN3202 evaluation board supports the digital Hall and quadrature encoder
sensors as motor position feedback.
The sensors can be connected to the STSPIN32F0A by closing jumpers JP5, JP6 and JP7
(open by default).
When JP5, JP6 and JP7 are closed (Hall/encoder mode), JP9, JP10 and
JP11should be respectively open (BEMF sensing mode).
The Hall sensor/encoder should be connected to J4 as per the following table.
Table 3: Hall/encoder connector (J4)
Name
Pin
Description
Hall1/A+
1
Hall sensor 1/encoder out A+
Hall2/B+
2
Hall sensor 2/encoder out B+
Hall3/Z+
3
Hall sensor 3/encoder zero feedback
VDD sensor
4
Sensor supply voltage
GND
5
Ground
A protection resistor of 1 kΩ is mounted in series with the sensor outputs.
For sensors requiring an external pull-up, three 10 kΩ resistors are already mounted on the
output lines and connected to the VDD voltage. On the same lines, a footprint for pull-down
resistors is also available.
The jumper JP3 selects the power supply for the sensor supply voltage:
jumper between pin 1 and pin 2: Hall sensors powered by VUSB (5 V)
jumper between pin 1 and pin 2: Hall sensors powered by VDD (3.3 V)
2.2.3 Overcurrent detection and current sensing measurement
The STEVAL-SPIN3202 evaluation board implements overcurrent protection based on the
STSPIN32F0A integrated OC comparator.
The shunt resistor measures the load current. Resistors R26 and R27 bring the voltage
signal to the OC_COMP pin. When the peak current flowing though the shunt exceeds the
selected threshold, the integrated comparator is triggered and all the high side power
switches are disabled.
The current threshold of the STEVAL-SPIN3202 varies according to the STSPIN32F0A OC
threshold as listed in the following table.
Table 4: Overcurrent thresholds
PF6
PF7
Internal comp. threshold
OC threshold
0
1
100 mV
20 A
1
0
250 mV
65 A
1
1
500 mV
140 A

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2.2.4 Bus voltage sensing circuit
The STEVAL-SPIN3202 evaluation board provides the bus voltage sensing. This signal is
set through a voltage divider by the motor supply voltage (VBUS, R10 and R16) and sent to
the PB1 GPIO (the ADC channel 9) of the embedded MCU. The signal is also available on
the TP6.
2.2.5 Hardware user interface
The board provides the following hardware user interface:
potentiometer (R6 setting, for example, the target speed)
switch SW1 (to reset STSPIN32F0A MCU and ST-LINK V2)
switch SW2 (user button 1)
Switch SW3 (user button 2)
LED DL3 (user LED 1, turned on when the user 1 button is pressed too)
LED DL4 (user LED 2, turned on when the user 2 button is pressed too)
2.2.6 Debug
The STEVAL-SPIN3202 evaluation board embeds an ST-LINK/V2-1
debugger/programmer.
The ST-LINK features:
USB software re-enumeration
virtual com port interface on USB connected to the STSPIN32F0A (UART1) PB6/PB7
pins
mass storage interface on USB
The ST-LINK is supplied by the host PC through the USB cable connected to the board.
The LED LD1 provides ST-LINK communication status information:
Red LED flashing slowly: at power-on before USB initialization
Red LED flashing quickly: following the first successful communication between the
PC and ST-LINK/V2-1 (enumeration)
Red LED ON: the initialization between the PC and ST-LINK/V2-1 is complete
Green LED ON: successful target communication initialization
Red/green LED flashing: during communication with target
Green ON: communication successfully completed
The reset function is activated by removing the jumper J8.