ST STEVAL-SPIN3202 Bedienungsanleitung

September 2017

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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.

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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

Label

Description

1-2

Motor power supply

1-2

Device main power supply (VM)

1-2-3

U, V, W

3-phase BLDC motor phase connection

1-2-3

Hallsensors/encoder connector

4-5

Hall sensors/encoder supply

USB input ST-LINK

3v3

ST-LINK power supply

CLK

SWCLK of ST-LINK

GND

DIO

SWDIO of ST-LINK

1-2

UART (ST-LINK Virtual COM)

1-2

ST-LINK reset

1-2

BOOT

Boot mode

J10

1-2

RX/TX

Bootloader UART connector

TP1

VREG

12 V voltage regulator output

TP2

GND

TP3

VDD

TP4

SPEED

Speed potentiometer output

TP5

USB supply voltage

TP6

VBUS

Bus voltage feedback

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Name

Label

Description

TP7

OUT_U

Output U

TP8

Output op amp sense 2

TP9

PA5 GPIO

TP10

GND

TP11

OUT_V

Output V

TP12

GPIO BEMF

TP13

OUT_W

Output W

TP14

3V3

3V3 ST-LINK

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

Description

Hall1/A+

Hall sensor 1/encoder out A+

Hall2/B+

Hall sensor 2/encoder out B+

Hall3/Z+

Hall sensor 3/encoder zero feedback

VDD sensor

Sensor supply voltage

GND

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

100 mV

20 A

250 mV

65 A

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.

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