User Manuals | Evaluation Boards | System Evaluation Boards | Motor Control

100 W 3-phase inverter for BLDC sensorless motor evaluation board

User Manual

Format: (957 kb)

Last Updated: 07/04/2008

Pages: 39

Related Data Briefs

100 W 3-phase inverter for BLDC sensorless motor evaluation board

Related Datasheets

N-channel 520 V,1.22 Ω,4.4 A,TO-220,IPAK,I²PAK,DPAK,TO-220FP Zener-protected SuperMESH™ Power MOSFET

Related Information

Software GUI for configuring the 100 W 3-phase inverter for BLDC sensorless motor evaluation board

Raw Ascii Text- ( Hide )
(Unformatted textual content of the document used by search engines)

UM0522 User manual
100 W 3-phase inverter for BLDC sensorless motor evaluation board
Introduction
The 100 W 3-phase inverter for the BLDC sensorless motor evalaluation board (for brevity also referred with its order code STEVAL-IHM017V1) is a complete development platform for BLDC sensorless motor application with nominal power up to 100 W. It is based on a cost-effective, flexible and open design, including a three-phase inverter bridge based on the STD5NK52ZD-1 Power MOSFET in IPAK package and an ST7MC 8-bit microcontroller with 16 Kbyte internal Flash memory. The system has been designed to drive a three-phase brushless motor with permanent magnet rotor exploiting trapezoidal sensorless control. The STEVAL-IHM017V1 features complete hardware for developing motor control applications based on ST7MC peripherals including motor control peripheral (MTC). The STEVAL-IHM017V1 uses an in-circuit communication (ICC) standard interface to connect to the host PC via In-circuit debuggers/programmers such as the inDART-STX board from Softec. The board is designed to support 230 Vac of bus voltage up to 100 W of input power. It also includes a power supply stage with VIPer12A-E as the buck converter to generate voltage reference for the driver and the microcontroller. Figure 1. STEVAL-IHM017V1 evaluation board

April 2008

Rev 1

1/39
www.st.com

Contents

UM0522

Contents
1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 1.2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 3

System architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Safety and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 3.2 3.3 3.4 3.5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Evaluation board intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Evaluation board installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electronic connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Evaluation board operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4

ST7FMC2S4T6 microcontroller functions . . . . . . . . . . . . . . . . . . . . . . . 10
4.1 Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5 6 7

STD5NK52ZD-1 characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Board electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Board architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1 7.2 7.3 7.4 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Power stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 ICC connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8

Motor control operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.1 8.2 8.3 Environmental considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Hardware requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Software requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.3.1 Installing the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
STEVAL-IHM017V1 - GUI installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 3rd party software installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Installation note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

2/39

UM0522

Contents

8.4 8.5 8.6 8.7 8.8 8.9 8.10 8.11 8.12 8.13 8.14 8.15 8.16 8.17 8.18

Board setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Firmware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Configuring the firmware using GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Motor type selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 "3-phase BLAC/DC (trapezoidal)" settings . . . . . . . . . . . . . . . . . . . . . . . . 22 "3-phase BLAC/DC (trapezoidal)" advanced settings . . . . . . . . . . . . . . . . 24 Changing the maximum current allowed by GUI . . . . . . . . . . . . . . . . . . . 26 Compiling the firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Programming firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Setup option byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Board connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Changing the maximum current level allowed . . . . . . . . . . . . . . . . . . . . . 31 Driving the BLDC motor (trapezoidal - sensorless) . . . . . . . . . . . . . . . . . 32 LED behavior after power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Potentiometers functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

9 10 11

Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3/39

List of figures

UM0522

List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. STEVAL-IHM017V1 evaluation board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Motor control system architecture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STD5NK52ZD-1, package and internal schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . 12 Board architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Power supply architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Gate driving network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 ICC connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Board schematic - control block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Board schematic - power block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 STVD7 for InDART-STX toolset configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Motor type choice window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 "3-phase BLAC/DC (trapezoidal)" settings basic parameters window . . . . . . . . . . . . . . . . 22 "3-phase BLAC/DC (trapezoidal)" advanced parameters window . . . . . . . . . . . . . . . . . . . 25 ST7VD active project configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 System setup for programming phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Option byte settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Programming option auto window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 System setup for running phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

4/39

UM0522

List of tables

List of tables
Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. ST7FMC2S4T6 functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Board electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Configuration ".h" files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 "3-phase BLAC/DC (trapezoidal)" basic parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 "3-phase BLAC/DC (trapezoidal)" advanced parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Potentiometer functionality based on open/closed loop driving strategy . . . . . . . . . . . . . . 32 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

5/39

Overview

UM0522

1
1.1

Overview
Features

Input voltage 220 - 230 Vac Maximum power 100 W Power MOSFET STD5NK52ZD-1 - 4.4 A 520 V included 15 V auxiliary power supply connector Programming and debug support via 10-pin ICC connector Three potentiometers for runtime settings Star t/stop button Reset button

1.2

Applications

Refrigerator compressors Dishwasher pumps

6/39

UM0522

System architecture

2

System architecture
A generic motor control system can be basically schematized as the arrangement of four main blocks (see Figure 2):

A control block whose main tasks are to accept user command and motor drive configuration parameters and to provide digital signals to implement the proper motor driving strategy A power block that makes a power conversion from DC bus transferring it into the motor by means of a three-phase inverter topology The motor itself. The STEVAL-IHM017V1 board is able to drive a three-phase brushless motor with permanent magnet rotor exploiting trapezoidal sensorless control. The power supply block is able to accept 230 Vac input voltage and provide the proper levels to supply both the control block and power block devices. Motor control system architecture

Figure 2.

Control Block

P ow er Supply

P ow er Block

M otor

The system proposed by STEVAL-IHM017V1 includes all the above hardware blocks (apart the motor) plus a software GUI that allows configuring the motor drive. Moreover, an open source C code is available, derived from the ST7MC motor control libraries, allowing easy customization and extension of control algorithms. The core of the control block is constituted of an ST7MC MCU that provides the driving signals to the power block according to a driving strategy, the latter one closely related to the motor type and characteristics. Driving signals are constituted of 3 complementary PWM signals (in the range of 0-5 V) for providing logic inputs for high/low side gate driver belonging to the power block. In the system proposed, three legs are present (3-phase inverter). The power block, based on the gate drivers L6386 and Power MOSFET (STD5NK52ZD-1), converts the control signals from ST7MC MCU to power signals for the three phase inverter in order to drive the motor. The board can be supplied by an AC power supply of 230Vac with a maximum input power of 100 W. Please refer to Section 7: Board architecture on page 14 for more details on system architecture. With the included Power MOSFET device STD5NK52ZD-1, the maximum rating of rectified voltage is 520 V and the maximum continuous current is 4.4 A at 25C.

7/39

Safety and operating instructions

UM0522

3
3.1

Safety and operating instructions
General
Warning: During assembly and operation, STEVAL-IHM017V1 evaluation board poses several inherent hazards, including bare wires, moving or rotating parts, and hot surfaces. There is danger of serious personal injury and damage to property, if the kit or its components are improperly used or installed incorrectly.

All operations involving transportation, installation and use, as well as maintenance are to be carried out by skilled technical personnel (national accident prevention rules must be observed). For the purposes of these basic safety instructions, "skilled technical personnel" are suitably qualified people who are familiar with the installation, use, and maintenance of power electronic systems.

3.2

Evaluation board intended use
The STEVAL-IHM017V1 evaluation board is a component designed for demonstration purposes only, and shall not be used for electrical installation or machinery. The technical data as well as information concerning the power supply conditions shall be taken from the documentation and strictly observed.

3.3

Evaluation board installation
The installation and cooling of the demonstration kit boards shall be in accordance with the specifications and the targeted application (see Section 8: Motor control operations on page 19). The motor drive converters shall be protected against excessive strain. In particular, no components are to be bent, or isolating distances altered during the course of transportation or handling. No contact shall be made with other electronic components and contacts. The boards contain electrostatically sensitive components that are prone to damage through improper use. Electrical components must not be mechanically damaged or destroyed (to avoid potential health risks).

3.4

Electronic connections
Applicable national accident prevention rules must be followed when working on the main power supply with a motor drive. The electrical installation shall be completed in accordance with the appropriate requirements (e.g., cross-sectional areas of conductors, fusing, PE connections; for further information, see Section 8: Motor control operations on page 19).

8/39

UM0522

Safety and operating instructions

3.5

Evaluation board operation
A system architecture which supplies power to the STEVAL-IHM017V1 evaluation board shall be equipped with additional control and protective devices in accordance with the applicable safety requirements (e.g., compliance with technical equipment and accident prevention rules).

Warning:

Do not touch the board after disconnection from the voltage supply, as several parts and power terminals which contain possibly energized capacitors need to be allowed to discharge.

9/39

ST7FMC2S4T6 microcontroller functions

UM0522

4
4.1

ST7FMC2S4T6 microcontroller functions
Main features

TQFP44 package 16 Kbyte dual voltage Flash program memory with read-out protection capability 768 bytes RAM (256 stack bytes) Clock, reset and supply management with: enhanced reset system enhanced low voltage supervisor (LVD) for mains supply and auxiliary voltage detector (AVD) with interrupt capability clock sources: crystal/ceramic resonator oscillators and bypass for external clock, clock security system four power-saving modes: halt, active-halt, wait and slow

Configurable window watchdog timer Nested interrupt controller with 14 interrupt vectors Two 16-bit timers One 8-bit auto-reload timer Serial peripheral interface (SPI) (not used in this evaluation board) Serial communication interface (LINSCITM) (not used in this evaluation board) Motor controller (MTC) peripheral with: 6 high sink pulse width modulator (PWM) output channels asynchronous emergency stop analog inputs for rotor position detection permanent magnet motor coprocessor including: multiplier, programmable filters, blanking windows and event counters Operational amplifier and comparator for current limitation

10-bit analog-to-digital converter (ADC) with 11 inputs In-circuit communication interface (ICC, debug) ST7FMC2S4T6 functions
I/O name MCO0 MCO1 MCO2 MTC MCO3 MCO4 MCO5 MCIA, MCIB, MCIC Description (depends on embedded software) PWM outputs high side phase A PWM outputs low side phase A PWM outputs high side phase B PWM outputs low side phase B PWM outputs high side phase C PWM outputs low side phase C Analog or digital input for position sensor or B.E.M.F. detection

Table 1.

Function

10/39

UM0522 Table 1.

ST7FMC2S4T6 microcontroller functions ST7FMC2S4T6 functions (continued)
I/O name MCVREF NMCES OAP OAN MTC OAZ MCCREF MCPWMV MCZEM MCDEM MISO SPI MOSI SCK RDI LINSCITM TDO AIN12 10-bit ADC AIN11 AIN7 ICCCLK ICC ICCDATA ICCSEL/Vpp PE2 Other I/O PB7 LED management Transmit data output - not used in this evaluation board Trimmer R63 reading input Trimmer R62 reading input Trimmer P61 reading input Output serial clock Input/output serial data Programming voltage input Star t/stop pushbutton Description (depends on embedded software) Not used in this evaluation board Emergency stop Operational amplifier positive input Operational amplifier negative input Operational amplifier output Current limitation reference PWM output V user for current reference Not used in this evaluation board Not used in this evaluation board Master in/slave out data - not used in this evaluation board Master out/slave in data - not used in this evaluation board Serial clock - not used in this evaluation board Received data input - not used in this evaluation board

Function

11/39

STD5NK52ZD-1 characteristics

UM0522

5

STD5NK52ZD-1 characteristics
The STD5NK52ZD-1 is a n-channel Power MOSFET in the IPAK package (520 V - 1.22 4.4 A) Zener-protected, SuperMESHTM. Figure 3. STD5NK52ZD-1, package and internal schematic diagram

3 2 1

IPAK

Table 2.
Symbol VDS VDGR VGS ID ID IDM
(1)

Absolute maximum ratings
Parameter Drain-source voltage (VGS = 0) Drain-gate voltage (RGS = 20 k) Gate-source voltage Drain current (continuous) at TC = 25C Drain current (continuous) at TC = 100C Drain current (pulsed) Total dissipation at TC = 25C Value 520 520 30 4.4 2.7 17.6 70 Unit V V V A A A W

PTOT

1. Pulse width limited by safe operating area

Stresses above the limit shown in Table 2 may cause permanent damage to the device.

12/39

UM0522

Board electrical characteristics

6

Board electrical characteristics
Stresses above the limit shown in Table 3 may cause permanent damage to the devices present inside the board. This is a stress rating only and functional operation of the device under these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. 15 V bias current measurement can be useful to check the working status of the board. If measured value is considerably greater than typical value, it means that some damage has occurred in the board. Supply the control board using a 15 V power supply connected to CON2 observing the polarity. Table 3. Board electrical characteristics
Board parameters STEVAL-IHM017V1 Min 15 V auxiliary supply range CON2 15 V bias current (typical) VBUS J9 12 23 30 Max 15 23 270 V mA Vac Unit

13/39

Board architecture

UM0522

7

Board architecture
The STEVAL-IHM017V1 can be schematized as in Figure 4 Figure 4. Board architecture

V Bus

L6386

L6386

Vdriver

L6386

Power Supply

M

R SENSE

PWMs 5V

ST7MC
ICC LEDs

Potentiometers and button

The heart of the evaluation board is the ST7MC microcontroller with a dedicated peripheral included to drive the three-phase brushless motor with permanent magnet rotor exploiting trapezoidal sensorless control. The board is provided with three potentiometers (R61, R62, R63) used for tuning, in real time, some parameters related to the drive. See Section 8: Motor control operations on page 19. Two LEDs (green/red) are used to get information about the status of the system. Their behavior is related to the drive. See Section 8: Motor control operations on page 19. In normal functionality it is expected that the board is supplied by VBUS connector J9 but an auxiliary supply connector CON2 is included on the board to feed the drivers and the microcontroller. This auxiliary supply can be useful for safety reasons, for example it should be used to program or debug the device without feeding the board with high voltage. One communication system can be established with the microcontroller:

ICC used for programming/debugging purposes

7.1

Power supply
The power supply is able to address a wide range of AC input voltage voltages from 30 Vac up to 270 Vac. The alternate current input is rectified by a diodes bridge and bulk capacitor to generate a direct current bus voltage approximately equal to 2 Vac minus the voltage drop on the bridge and ripple. Then we have used a VIPer12A-E based buck converter to generate voltage reference for driver 15 V and a linear voltage regulator L7805 to generate the microcontroller voltage reference (see Figure 5).

14/39

UM0522 Figure 5. Power supply architecture

Board architecture

15V auxiliary supply CON2 Vbus Vac Rectifier Vdc = Vac
2

Vdrivers Buck converter VIPer 12 +15V Linear regulator L7805 +5V

7.2

Power stage
The power stage is based on six power MOSFETs in full 3-phase bridge configuration. In the board there are six STD5NK52ZD-1s in an IPAK package. Each device contains the freewheeling Zener diode. Three L6386 have been used to drive the Power MOSFETs gates and for hardware current protection. For each Power MOSFET in the 3-phase bridge the network shown in Figure 6 (default configuration) has been used as the starting configuration. Figure 6. Gate driving network
Turn on Turn on D2 2 R1 1 0 0R R5 2 2 0R R2 1 2 2R C1 3 1 0 0 pF Q1 Turn off R2 1 22R R1 100R Turn off R2 0 D2 2

Default configuration

Alternate configuration

In this default configuration the gate of the Power MOSFET is turned on by means of R1 and D22 while the turnoff is performed very fast by means of the Q1 transistor. It is also possible to use the alternate configuration of the network (See Figure 6). To set this configuration transistor Q1, resistor R5 and C13 must be removed from each network (6). The direction of the diode D22 must be inverted and a resistor R20 must be mounted. In this alternate configuration the gate of the Power MOSFET is turned on by means of R1 and R20 while the turnoff is performed by means of R1 and D22.

15/39

Board architecture Figure 7. Board layout

UM0522

7.3

ICC connector
The ICC connector (J7) is used to establish ICC communication for programming/debugging purposes. The pinout is shown in Figure 8. This connector is compatible with Softec's inDART-STX board (not included in the package). Figure 8. ICC connector

16/39

7.4

UM0522

Figure 9.

+5V

R2 0 N.M. D2 2 R1 100R R5 2 2 0R 100pF 13 12 11 D23 10 9 R6 8 C1 1 2 . 2 u F - 1 6V 100R R22 N.M. R21 22R BA 1 BB 2 R 7 2 2 0R 1 0 0 pF N.M. R26 STTH1L06A R9 R8 100R 14 13 12 OUT NC NC CIN 7 GND LVG GND 11 10 DIAG 9 8 220R N.M. C18 R4 6 1.5K R23 12K IP RBC IC4 1 +5V 2 470nF C34 3 +5V +15 V R6 0 100R C2 5 7 S T 7 F M C 2 S 4T 6 - TQFP44 470nF 25V R6 1 C49 10nF R4 3 27K Not Mount C5 2 10nF R6 2 C5 1 10nF R6 3 C50 1uF 1nF 220R C2 0 100pF C48 4 5 6 LIN SD HIN VCC DIAG CIN GND L 6 3 8 6D VBOOT HVG OUT NC NC LVG GND 14 13 12 11 10 9 8 R3 4 2 R33 1 0 0R R4 7 N.M. STTH1L06A R37 22R C1 2 2.2uF - 16V R30 1 0 0R R36 N.M. D2 6 BE 2 R3 2 220R C19 1 0 0 pF BE 1 C16 1 0 0 pF R31 22R R1 1 100R 220R C15 1 0 0 pF BC1 R3 5 N.M. D2 5 6 C23 IC6 470nF 25V 1nF C17 STTH1L06A R14 2 D2 4 2 Q3 BC807 - 25 2 Q2 C14 BC807 - 25 C1 3 STTH1L06A 2

BEMFC

BEMFB IC5 1 LIN SD HIN VCC DIAG CIN GND GND LVG NC NC OUT HVG VBOOT +15 V 2 3 4 R52 47K +5V 5 C2 4 R4 0 100K 7 R59 10K 4 7 0 nF 25V C2 2 1nF 6 +5V ICC connector : HE10 male type +5V S2 SW PUSH J7 14 +5V R5 4 47K L 6 3 8 6D

1

R3 8 100K +5V Q1

C7 2.2uF - 16V

BA 2

BEMFA

BC807 - 25

9 7 5 3 1

10 8 6 4 2

3

1

Board schematic

STTH1L06A

C37 C3 9 1nF 1 R3 9 10K R19 2 SD HIN VCC HVG 3 4 5 1K +15 V LIN VBOOT IC3 L6386D

3

GNDBB1 BC2

C38

47pF N.M

47pF N.M

3

C41

47pF N.M

1

BD2

1
Q4 BC807 - 25

+5V

LS

3
GNDBD1

Board schematic - control block

CSTCE16MOV53

- RO

X1

C2 8 1 0 0 nF

2

1
Q5 BC807 - 25

STTH1L06A

C30 1 0 nF 100nF C42 25V

C3 6

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 MCO3 (HS) MCO2 (HS) MCO4 (HS) MCO1 (HS) MCO5 (HS) MCO0 (HS) MCES VP P OSC1 PE 3/ICAP 1_B OSC2 PE 2/ICAP 2_B Vss_1 PE1/OCMP1_B Vdd_1 PEO (HS)/OCMP2_B PA 3/PWM0/AIN0 PD7 (HS)/TDO PA5/ARTIC1/AIN1 PD6 (HS)/RDI PB 0/MCVREF PD5/AIN15/ICCDATA PB 1/MCIA PD4/EXTCLK_A/AIN14/ICCCLK PB 2/MCIB PD3/ICAP1_A/AIN13 PB 3/MCIC PD2/ICAP2_A/MCZEM/AIN12 PB 4/MIS O PD1 (HS)/OCMP1_A/MCPWMV/MCDEM PB5/MOSI/AIN3 PD0/OCMP2_A/AIN11 PB6 (HS)/SCK RES E T PB7 (HS)/SS/AIN4 VDD_ 0 PC2/ OAP VS S _ 0 PC3/ OAN VS SA OAZ/MCCFI1/AIN6 VAREF PC4/MCCREF PC7/MCPWMW/AIN7

44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23

R5 3 N.M

3

R51 56K

t.b.d.

1

D27

BF2

Q6 BC807 - 25

+5V R56 33K

R41 10K

R42 10K

+5V

R44 2.7K

LSCS

D13 C4 0 R5 5 68K 100nF Not Mount

C

A

R45 2.7K

LED

D12

A

C

LED

3
GNDBF1

Board architecture

17/39

4

100K - 1/2W

C3 +15V IC1 VIPER12ADIP +5V R3 330K

+

2

C1

TR1

C2

1

STTH106
0.23V RES

D2
SET

D3 BZX84C15
VDD DRAIN

220uF/450V
FB SOURCE

transil 2.2uF/25V

10uF/35V 35V 3 + L1 1mH/350mA IC 2 L 7 8 L 0 5 AC Z Vin GND D6 BZX85C16 2 C6 Vout 1 2
TOKO 00499

8 7 6 5

D2 1 BRIDGE_2KPB**

2

-

Not mounted
1
R2 5 C4 22nF/50V

1 2

100K - 1/2W

t
C5 100uF/25V

2

1

CAP NP 0.22uF 275V BA2 BA1 1 Q7 STD5NK52ZD -1

- X2

F1 FUSE 3A

2

3

2

- Main

GNDBB1
2
J8 BC2 1 Q9 STD5NK52ZD -1 CON3 LSCS

Phase - Main

Neutral

3

1 2

3

2

GNDBD1

2

3

BE1

2

3

GNDBF1

3

18/39
R2 4 1 D1 2 1N4148 R2 680K HV Monitoring D5 BZX85C5V1 13 R4 12K 1uF/16V 16V D7 STTH108 C8 Q8 STD5NK52ZD -1 22nF/400V BB2 1 Phase A 1 2 3 Phase B Phase C R1 0 0.1R - 2.5W -1

Board architecture

15 - 5A

NTC

C10

Figure 10. Board schematic - power block

J9 BC1

120/230

- Vac

230VAC

BD2

1

Q1 0 STD5NK52ZD

BE2

1

Q1 1 STD5NK52ZD -1

BF2

1

Q1 2 STD5NK52ZD -1

1 R1 2 BEMFA +15V 1 CON2 +15V 2 1 C9 100nF/50V BEMFB R1 5

D1 8

STTH106 2 82K D1 9 STTH106 2 82K D2 0 1 R1 7 8 2 K BEMFC STTH106 2

R64 1.2K

R1 3 8 2 K R65 1.2K

R1 6

82K R66 1.2K

UM0522

R1 8

82K

UM0522

Motor control operations

8
8.1

Motor control operations
Environmental considerations
Warning: The STEVAL-IHM015V1 evaluation board must only be used in a power laboratory. The voltage used in the drive system presents a shock hazard.

The kit is not electrically isolated from the DC input. This topology is very common in motor drives. The microprocessor is grounded by the integrated ground of the DC bus. The microprocessor and associated circuitry are hot and MUST be isolated from user controls and communication interfaces.

Warning:

Any measurement equipment must be isolated from the main power supply before powering up the motor drive. To use an oscilloscope with the kit, it is safer to isolate the DC supply AND the oscilloscope. This prevents a shock occurring as a result of touching any SINGLE point in the circuit, but does NOT prevent shocks when touching two or more points in the circuit.

An isolated AC power supply can be constructed using an isolation transformer and a variable transformer. A schematic of this AC power supply is in the application note, "AN438, TRIAC + microcontroller: safety precautions for development tools." (Although this application note was written for TRIAC, the isolation constraints still apply for switching semiconductor devices such as MOFSETs.) Note: Isolating the application rather than the oscilloscope is highly recommended in any case.

8.2

Hardware requirements
To set up the STEVAL-IHM017V1 evaluation board system, the following items are required:

The board: STEVAL-IHM017V1 High-voltage insulated AC power supply up to 230 Vac Softec inDART-STX (not included in the package) Softec ICC isolation board (not included in the package) Two 10-pin flat cables (not included in the package) 3-phase brushless motor with permanet magnet rotor (not included in the package) Insulated oscilloscope (as needed) Insulated multimeter (as needed)

19/39

Motor control operations

UM0522

8.3

Software requirements
To customize, compile, and download the motor control firmware, the following software must be installed:

"STEVAL-IHM017V1 - GUI" (included in the CD-ROM) STVD7 for inDART-STX V.3.11 (also called "ST7 Toolset" downloadable from Softec's website: www.softecmicro.com) Cosmic compiler - ST7 C compiler 16 Kbyte free version - 4.5c (downloadable from Cosmic's website: www.cosmic-software.com).

8.3.1

Installing the software
STEVAL-IHM017V1 - GUI installation
Inser t the CD-ROM provided with the kit and execute Setup.exe.

3rd party software installation
Follow the instructions of the related software to install and configure STVD7 for inDARTSTX and cosmic compiler.

Installation note
1. Install the Cosmic compiler first. Use the default installation folder: "C:\Program Files\COSMIC\CXST7_16Kbite". Registration is required before using the product. You can perform this procedure at any time by running the "lmreg16k.exe" file inside Cosmic's installation folder. Complete the form and click on the "Register by email" button. You will receive a license file "license.lic" that must be copied inside the installation folder under the "license" folder. Then install STVD7 for inDART-STX. During the first run of the software after installation, a prompt for the configuration of the toolset should appear. The toolset can be configured at any time by opening "tools options" inside STVD7. To do this, click "toolset", and select the "toolset" menu tab, select "ST7Cosmic" and configure as in Figure 11.

2.

Figure 11. STVD7 for InDART-STX toolset configuration

20/39

UM0522

Motor control operations

8.4 8.5

Board setup Firmware description
To address the driving of 3-phase brushless motor with permanent magnet rotor exploiting the sensorless trapezoidal control it is required to use the firmware named "BLDC_3PH_SL" (released for free). Together with the installation of "STEVAL-IHM017V1 - GUI" the BLDC_3PH_SL firmware source code is installed on the PC inside the installation folder under the "BLDC_3PH_SL" folder. The following files are present inside the working folder:

".stw" file - STVD7 workspace file ".stp" file - STVD7 project file "source" folder - containing all .c and .h files required

Note:

We suggest making a backup copy of the original working folder. The following procedure modifes the original content of the workspace folder without leaving the possibility to return to a previous step.

8.6

Configuring the firmware using GUI
Before "using" the firmware, it must be configured. The term "configure" indicates the act of selecting a specific driving strategy, such as open or closed loop, voltage or current mode and so on. The setting of customized parameters such as current limitation, motor settings, driving related parameters and so on is also indicated. Configuring the firmware is performed by compiling a set of .h files inside the source folder and writing a series of values as fields of #define statements. To do this configuration, solid knowledge of the hardware and the architecture of the firmware is required. Otherwise, the configuration tool provided inside the CD-ROM called "STEVAL-IHM017V1 - GUI" can be used. This allows the user to choose and set all required parameters visually and the software automatically generates the ".h" files required (refer to the ".h" files that constitute the configurations related to the firmware in Table 4). Table 4. Configuration ".h" files
Configuration files MTC_Settings_Sensorless.h BLDC_3PH_SL spec_settings.h version.h

Firmware name

For a detailed description of the configuration files and how to manually customize the related parameters see AN1905.

21/39

Motor control operations

UM0522

8.7

Motor type selection
After "STEVAL-IHM017V1 - GUI" is started, the motor type choice dialog box appears (see Figure 12). In this window the user can choose the kind of motor. For this evaluation board only the 3-phase BLAC/DC motor (trapezoidal) is available. Figure 12. Motor type choice window

Press the OK button.

8.8

"3-phase BLAC/DC (trapezoidal)" settings
Figure 13. "3-phase BLAC/DC (trapezoidal)" settings basic parameters window

22/39

UM0522

Motor control operations

Table 5.

"3-phase BLAC/DC (trapezoidal)" basic parameters
Description The number of pole (north/south) pairs in the motor The manner in which to run the motor, either open loop (without speed regulation) or closed loop (with speed regulation) The motor driving mode, current mode or voltage mode The software current limitation value (only in voltage mode), if the current flowing inside one (of three) phases of the motor reaches this value overcurrent is not generated but the pwm is managed to limit the current at this level. The back EMF (BEMF) detection mode (rotor position), only sensorless control is allowed in this evaluation board

Parameter name Poles pairs Speed regulation Driving mode

Current bus limitation

Detection mode Alignment phase Final duty cycle Final current Alignment duration Acceleration phase Mechanical acceleration rate Duty cycle Current reference Number of Z events before auto-switched mode Electrical frequency Minimum Maximum Run settings

The percentage of final duty cycle applied at the end of alignment phase (only in voltage mode) The value of current flowing inside the motor at the end of the "alignment phase" (only in current mode) The duration of the "alignment phase" in milliseconds (ms)

The mechanical acceleration rate of the rotor during the ramp up in RPMs (or Hz) per second (alternate between RPM and Hz settings by clicking on the "RPM" button) The duty cycle percentage during the ramp up (only in voltage mode) The value of current flowing inside one (of three) phases of the motor at the end of the "acceleration phase" (only in current mode) The number of consecutive Z events that occur before the microcontroller runs the motor in autoswitched mode

The minimum target rotor frequency in closed loop, expressed in Hz The maximum target rotor frequency in closed loop, expressed in Hz

From RV1

When the "From RV1" checkbox is selected: duty cycle value is defined by the RV1 potentiometer (only for voltage mode), or current reference is defined by the RV1 potentiometer (only for current mode), or target speed is defined by the RV1 potentiometer (only for closed loop) if this box is unchecked, the above parameters are set by the user. The duty cycle percentage when the motor is run in "open loop" "voltage mode"

Duty cycle

23/39

Motor control operations Table 5. "3-phase BLAC/DC (trapezoidal)" basic parameters (continued)
Description

UM0522

Parameter name Current reference

The value of current flowing inside one (of three) phases of the motor at run time in "open loop" "current mode" The target mechanical (rotor) Speed in RPMs (or Hz) if speed regulation is set to "closed loop" (alternate between RPM and Hz settings by clicking on the "RPM" button) If the check box (Delay coefficient from RV2-RV3) is checked, then the Rising/Falling delay are set by R62 and R63. Otherwise if the check box is unchecked, these two parameters (Rising/Falling delay) can be set by the user in the following control boxes (B-emf rising/falling edge), in this case the two parameters are fixed and cannot be modified during the run time. The B-EMF Rising delay coefficient value (from 0 to 255) The B-EMF Falling delay coefficient value (from 0 to 255)

Target speed

Delay coefficient from RV2-RV3

B-emf rising edge B-emf falling edge

Closed loop parameter (only in closed loop) Integral coefficient (Ki) The value of the Integral Coefficient (Ki) of the proportional integrative (PI) regulator

Propor tional coefficient The value of the proportional coefficient (Kp) of the PI regulator (KP) Sampling time Change motor type The regulation sampling time (in milliseconds) the "change motor type" button enables the user to change the motor type (see Figure 13) the "advanced settings" button enables the user to set the advanced parameters (see Section 8.9: "3-phase BLAC/DC (trapezoidal)" advanced settings on page 24) the "generate source files" button enables the user to generate the configuration ".h" files shown in Table 7 - configuration ".h" files. A "save" dialog window appears, where the user can select in which folder to create the file. User must choose the right "Source" directory in the firmware working folder (see Section 8.5: Firmware description on page 21).

Advanced settings

Generate source files

8.9

"3-phase BLAC/DC (trapezoidal)" advanced settings
Clicking the "advanced settings" button (see Figure 13) opens the "advanced settings" dialog box (see Figure 14). This is where the advanced "3-phase BLAC/DC (trapezoidal)" motor type parameters are set.

24/39

UM0522

Motor control operations Figure 14. "3-phase BLAC/DC (trapezoidal)" advanced parameters window

Table 6.

"3-phase BLAC/DC (trapezoidal)" advanced parameters
Description Pulse width modulation (PWM) frequency in kHz PWM minimum off time in microseconds (s) to detect the BEMF If synchronous rectification it is enable or not Value of deadtime in s (only if Complementary PWM enabled)

Parameter name Switches PWM frequency Switches PWM minimum off time Complementary PWM signal Deadtime Current loop Current blanking window Current event counter filter

Time window filter in milliseconds to prevent erroneous sampling of the current after the PWM is turned ON Defines the number of counter events required to validate a current limitation event

D and Z sampling parameters Sampling clock Unused MCIx input Sets the frequency of the sampling clock for D and Z events in kHz Defines in which state the unused MCI input is fixed, either "Grounded" or "Hi-Z"

25/39

Motor control operations Table 6.

UM0522

"3-phase BLAC/DC (trapezoidal)" advanced parameters (continued)
Description

Parameter name Zero-crossing After D blanking window Z event counter filter Threshold voltage Demagnetization After C blanking window D event counter filter Demagnetization method Demagnetization time

Sets the blanking window after a D event in microseconds (s) Defines the number of counter events required to validate a Z event Voltage set (in volts) for Z detection

Sets the blanking window after a C event in microseconds (s) Defines the number of counter events required to validate a D event Three methods are available: "all hardware", "alternate hardware/software" or "all software" Fixed demagnetization time in microseconds (s) (only with demagnetization methods "all software")

Force duty cycle during Allows using a different value of duty cycle rather than the one in run time demagnetization setting Duty cycle Stop condition Free wheeling DC current braking Brake level Brake time After stopping, the motor continues to spin freely Active brake obtained injected dc current into the motor Value of duty cycle percentage of PWM brake signal Duration in milliseconds of the active brake Value of duty cycle percentage forced during demagnetization

8.10

Changing the maximum current allowed by GUI
The maximum current allowed by GUI has been set to 4.4 A. This value may be changed by modifying the file "gui.ini" inside the folder where the " STEVAL-IHM017V1 - GUI" file is installed. Open the "gui.ini" file using the notepad and change the value of the following line:

MAX_CURRENT = 4.4

Replace the value 4.4 with the desired value of current limitation expressed in ampere. Remember that also the hardware current limitation must be changed accordingly, see Section 8.10: Changing the maximum current allowed by GUI on page 26 to know how to modify this limitation.

8.11

Compiling the firmware
Once the configuration files have been produced (manually or using the GUI), the binary executable file (.s19) must be compiled and produced. To do this, the STVD7 for inDARTSTX is used with the Cosmic compiler (see Section 8.3: Software requirements on page 20)

26/39

UM0522 1. 2. 3. 4.

Motor control operations Run the STDV7 for inDART-STX and choose "file > open workspace". Select the workspace file under the "firmware working folder" depending on the motor type (see Section 8.5: Firmware description on page 21). The default project in use is opened by the environment and is shown on the left side of the window below the opened ".stw" file. Make sure that "Release" is set as the active project configuration (see Figure 15).

Figure 15. ST7VD active project configuration

5.

Use the "build" pull-down menu to display and select the "rebuild all" command. The project will be compiled and built, and an executable file ".s19" will be generated inside "release" folder under the workspace.

Note:

1 2

Make sure that the following string: ".elf - 0 error(s), 0 warning(s)" is displayed inside the output pane after the building of the executable. After the building of the executable, please ensure that the file ".s19" generated inside the "release" folder under the workspace has been created. To do this, show the properties and check the creation date.

8.12

Programming firmware
Before programming the firmware, the board must be supplied and connected to the PC using the inDART board. We suggest setting up the system as described in Figure 16.

27/39

Motor control operations Figure 16. System setup for programming phase

UM0522

1.

Use the USB cable to connect the inDART-STX board to the PC. The green LED on the inDART-STX board turns on. The Windows operating system automatically detects the new hardware and loads the appropriate USB and inDART-STX drivers.

Note:

Windows 2000 and Windows XP may issue a warning the first time the inDART-STX power board is connected to the PC. The USB driver used by inDART-STX is not digitally signed by Microsoft, however, the user may safely ignore the warning since every kind of compatibility and security test has been carried out by Softec Microsystems. 2. 3. Connect the inDART board with the J7 connector using the 10-pin flat cable. Supply the control board using a 15 V power supply connected to CON2 observing the polarity.

Once the ST7VD for inDART has been installed, the "datablaze programmer" utility that can be used to program the firmware using the inDART-STX is automatically installed. 4. 5. 6. Run the Softec datablaze programmer utility. Click the "select device" button on the toolbar. In the "select device" window, select "inDART-STX" in the "programmer hardware" box, and "ST7FMC2S4" as the device code, and press OK.

28/39

UM0522 Note:

Motor control operations If an error occurs, make sure that the inDART-STX board is connected to the PC. A green LED lights up if the board is connected. 7. 8. 9. Click on the file pull-down menu, select "load", then "code buffer". In the "load file to code buffer" dialog box format menu, select "Motorola S-Rec" settings. Click the button near "name" box and select the binary code (.S19) to download into the microcontroller, and press "OK" (to know which binary code to select, see Section 8.11: Compiling the firmware on page 26).

8.13

Setup option byte
10. Press the "option byte" button in the toolbar and select the value as shown in the "option configuration" window (see Figure 17), and press "OK". Figure 17. Option byte settings

11. Press the "auto" button in the toolbar and select the programming options as shown in Figure 18.

29/39

Motor control operations Figure 18. Programming option auto window

UM0522

12. Press "start" to program the device. If an error window appears, make sure that the inDART-STX board is connected to the STEVAL IHM017.01 board and that the board is well supplied. 13. After programming check LED behavior to verify that the firmware has been correctly downloaded.

8.14

Board connection
After the board has been programmed, the system can be configured as shown in Figure 19. This configuration is called a "running configuration". Remove the ICC flat cable from the board if present. 1. 2. Connect the insulated AC power supply to the J9 connector of STEVAL-IHM017V1. Connect the phases of the motor to the J8 connector of the board.

Figure 19. System setup for running phase

30/39

UM0522

Motor control operations At this point the system is ready to run. If the hardware current limitation set by default for this board (8 A) has to be modified, go to next paragraph, otherwise it is possible to skip to paragraph Section 8.16: Driving the BLDC motor (trapezoidal - sensorless) on page 32.

8.15

Changing the maximum current level allowed
An overcurrent protection mechanism is included inside the board that protects the system, disabling all the power switches if current that flows inside the motor is greater than a certain threshold. If this occurs, the red LED starts blinking. This mechanism is called "hardware current protection". This threshold value is fixed by the hardware to 8 A. To change this threshold to IMAX (expressed in A), resistor R51 (expressed in k) must be modified according to equation 1. Equation 1:
450R 51 = ----------- K IM A X

For example if the desired threshold is 2.2 A it is required to use R51=200k. Note: A place holder named R53 in parallel to R51 is also included that can be useful if the calculated value is not a standard value resistor. In this case it is possible to get better accuracy using two standard value resistors in parallel to get the calculated value. For a lower value of current threshold, in order to avoid noise on current feedback, the shunt resistor R10 may be reduced, in which case the formula that should be used is equation 2: Equation 2:
45 R 51 = ----------------------------- K I M A X R 10

If R51 and/or R10 are changed, the "gui.ini" file must be modified. This file is stored in the same folder as the "STEVAL-IHM017.01 - GUI" file. First calculate the Amplification factor using equation 3: Equation 3:
R5 -A = ----------1-10 K

Open the "gui.ini" file using the notepad and change the value of the following line: MAX_CURRENT = 4.4 ... AMP_SENS = 5.6 R_SENS = 0.1 Replace the value 4.4 with IMAX expressed in amps, the value 5.6 with the A value calculated by equation 3, and 0.1 with the value of R10.

31/39

Motor control operations

UM0522

Remember to close and re-open "LVST7MC - GUI" to activate this modification and follow the instructions in Section 8.6: Configuring the firmware using GUI on page 21.

8.16

Driving the BLDC motor (trapezoidal - sensorless)
Let's start the demonstration driving the brushless permanent magnet motor sensorless, so at this point please check that the board has been set up for sensorless driving (See Section 8.8: "3-phase BLAC/DC (trapezoidal)" settings on page 22. To drive the motor also in closed loop mode, it is not required that the motor include any position or speed sensor.

8.17

LED behavior after power-on
Turn on the power supply. For this demonstration the power supply output voltage should be set to 230 Vac and the current limitation of the power supply should be set to 2 A. After power-on the control board LED behavior should be the following:

LED D12 blinks signaling that the firmware has started to run. After a while LED D13 stays on to indicate "idle state".

8.18

Potentiometers functionality
If enabled during the configuration the three potentiometers R61, R62, R63 can be used to set run time parameters. See Table 7 to understand their functionality. Table 7. Potentiometer functionality based on open/closed loop driving strategy
Voltage mode Open loop Closed loop Sets the target rotor frequency value from minimum value to maximum value configured (see Section 8.8: "3-phase BLAC/DC (trapezoidal)" settings on page 22

R61

Sets the duty cycle percentage from 0% to the maximum duty cycle allowed.

R62 R63

Sets the value of rising delay coefficient from 0 to 255 Sets the value of falling delay coefficient from 0 to 255 Current mode Open loop Closed loop Sets the target rotor frequency value from minimum value to maximum value configured (see Section 8.8: "3-phase BLAC/DC (trapezoidal)" settings on page 22

R61

Sets the current reference value from 0 A to maximum current allowed.

R62 R63

Sets the value of rising delay coefficient from 0 to 255 Sets the value of rising delay coefficient from 0 to 255

32/39

UM0522

Motor control operations If during the configuration using GUI, the "from RV1" control has been unchecked, then the value of the duty cycle (or the value of current reference) is not set by R61 but has a fixed value. If during the configuration using GUI, the "from RV2 - RV3" control has been unchecked, then the value of the rising delay coefficient and the value of the falling delay coefficient are not set by P2 and P3 but have fixed values.

Note:

The value of rising and falling delay are expressed in 255th of last measured step time. So 0 means no delay between zero-crossing and commutation, while 255 means that the delay between zero-crossing and commutation is equal to last step time. The maximum duty cycle allowed in voltage mode depends on the value of PWM frequency and the value of PWM min off time set by the GUI. The maximum current allowed by GUI has been set to 4.4 A. (see Section 8.10: Changing the maximum current allowed by GUI on page 26). In "idle state" (D13 led is ON), push the start/stop button to start the motor. The D13 LED is turned OFF and D12 LED is turned ON to indicate that the firmware has been switched to "run state". In "run state" (D12 led is ON), push again the start/stop button to stop the motor. The D12 LED is turned OFF and D13 LED is turned ON to indicate that the firmware has been switched to "idle state".

33/39

Bill of material

UM0522

9

Bill of material
Table 8.
Item 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

Bill of materials
Reference CON2 C1 C2 C3 C4 C5 C6 C7,C11,C12 C8 C9 C10 C13,C14,C15,C16,C19,C20 C17,C22,C39,C48 C18 C23,C24,C25,C34 C28,C40,C42 C30,C49,C51,C52 C36 C37,C38,C41 C50 D1 D2,D18,D19,D20 D3 D5 D6 D7 D12,D13 D21 D22,D23,D24,D25,D26,D27 J8 J9 Part CON2 220 F/450 V 2.2 F/50 V 10 F/50 V 22 nF/50 V 100 F/25 V 1 F/50 V 2.2 F/16 V 22 nF/400 V 100 nF/50 V 0.22 F/275 V/x2 100 pF 1 nF N.M. 470 nF 100 nF 10 nF N.M N.M 1 F 1N4148 STTH1L06 BZX84C15 BZX85C5V1 BZX85C16 STTH108 LED BRIDGE_2KPB** STTH1L06A Morsetto a vite 3 poli. Morsetto a vite 2 poli. Footprint TRH-pitch 2.54mm TRH-pitch 10mm TRH-pitch 2.54mm TRH-pitch 3.5mm TRH-pitch 2.54mm TRH-pitch 3.5mm TRH-pitch 2.54mm SMD-0805 TRH-pitch 15.24mm TRH-pitch 2.54mm TRH-pitch 15.24mm SMD-1206 SMD-1206 Not assy SMD-1206 SMD-1206 SMD-1206 Not assy Not assy SMD-1206 TRH-Ver ticale TRH-Ver ticale TRH-Ver ticale TRH-Ver ticale TRH-Ver ticale TRH-Ver ticale SMD-1206 TRH SMD-1406 pitch-5mm pitch-5mm

34/39

UM0522 Table 8.
Item 32 33 34 35 36 37 38 39 40
41

Bill of material Bill of materials (continued)
Reference F1 IC1 IC2 IC3,IC4,IC5 IC6 J7 L1 Q1,Q2,Q3,Q4,Q5,Q6 Q7,Q8,Q9,Q10,Q11,Q12 R1,R6,R8,R11,R30,R33,R60 R2 R3 R4 R23 R5,R7,R9,R14,R32,R34 R10 R12,R13,R15,R16,R17,R18 R19 R20,R22,R35,R47,R26,R36 R21,R31,R37 R24,R25 R38,R40 R39,R41,R42,R59 R43 R44,R45 R46 R51 R52,R54 R53 R55 R56 R64,R65,R66 Part FUSE 3A-verticalecon fusibile VIPer12AS-E L78L05ACZ L6386D ST7FMC2S4T6 ICC connector : HE10 male type 1 mH/350 mA BC807-25 STD5NK52ZD-1 100 680 330 12 12 220 0.1 -3 W 82 1 N.M. 22 100 k-1/2W 100 10 N.M. 2.7 1.5 56 47 N.M. N.M. 33 1.2 SMD-1206 TRH TRH TRH SMD-1206 SMD-1206 TRH TRH SMD-1206 Not assy SMD-1206 TRH SMD-1206 SMD-1206 NOT ASSY SMD-1206 SMD-1206 SMD-1206 SMD-1206 Not assy Not assy SMD-1206 TRH TRHTRH-PICTH 5.0mm SOT23 Footprint TRH

42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

35/39

Bill of material Table 8.
Item 64 65 66 67 68 69

UM0522 Bill of materials (continued)
Reference R61,R62,R63 S2 TR1 X1 15-5A Nylon spacer Part 50K code RS 100-1199 12,64 x 10 e distrelec 50k cod 740218 0.82x 10 SW PUSH N.M. CSTCE16MOV53-RO NTC 10 mm TRH-3pin TRH Any SMD Footprint

36/39

UM0522

References

10

References
This user manual provides information about using the STEVAL-IHM017V1 and its hardware features. For additional information about supporting software and tools, please refer to: 1. 2. 3. 4. ST7MC datasheet: complete information about microcontroller features and peripherals. ST7MC motor control related application notes: complete information about motor control libraries developed for the ST7MC microcontroller. STD5NK52ZD-1 datasheet: complete information about the Power MOSFET devices included. Website and motor control forum: http://www.st.com/mcu/

37/39

Revision history

UM0522

11

Revision history
Table 9.
Date 07-Apr-2008

Document revision history
Revision 1 Initial release Changes

38/39

UM0522

Please Read Carefully:

Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein.

UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER'S OWN RISK.

Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST.

ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.

2008 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com

39/39

Document Number: 14524



All rights reserved © 2008 STMicroelectronics :: Terms Of Use :: Privacy Policy