ST EVALCOMMBOARD User manual

June 2006 Rev 1 1/39
UM0240
User manual
ST Industrial Communication Board - EVALCOMMBOARD
Introduction
ST Industrial Communication Board (order code: EVALCOMMBOARD) is a platform for
Communication, Command and Control exchange with Industrial reference design boards.
Its goal is to provide ST Industrial customers a reliable and easily accessible communication
channel, between a controlling PC and Industrial reference design boards.
It is a unique platform that allows evaluating a wide range of Industrial products in their
application environment.
Application fields covered by this platform are:
●Power line communication
●Motor control and gate driving
●Intelligent power switches
Industrial Communication Board
www.st.com

Contents UM0240
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Contents
1 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Main power supply (VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 MCU Flash programming (VPP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 OpAmp negative supply (-5V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3 Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Microcontroller features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Internal time base generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 10-bit digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Operational amplifiers (OpAmp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Interfaces and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6.1 USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 RS-232 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4 Power line communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.5 In-circuit communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.6 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.7 Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.1 Power line communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.2 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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10.1 Device firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.2.1 Power Line Communication (PLC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
10.2.2 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11 Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.1 PLC ST7538/40 DEMOKIT software evaluation tool . . . . . . . . . . . . . . . . 28
11.1.1 The user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.2 Motor control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
12.1 Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
12.2 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12.3 PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
12.4 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

List of tables UM0240
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List of tables
Table 1. Voltages present on board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Motor control interface pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 3. PLC interface digital signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 4. PLC interface analog signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 5. PLC interface control signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 6. Power connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 7. ST motor control evaluation boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 8. Bil of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Table 9. Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

UM0240 List of figures
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List of figures
Figure 1. Main power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2. Flash programming and OpAmp power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 3. Power supplies PCB area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 4. Industrial Communication Board connectors schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 5. Industrial Communication Board connectors pcb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 6. USB cable plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 7. Industrial Communication Board jumpers and switches on PCB . . . . . . . . . . . . . . . . . . . . 20
Figure 8. General purpose switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 9. General purpose switches voltages and decisions level . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 10. Industrial Communication Board leds on PCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 11. ST7538 dual channel reference design board (Rev 3.1) . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 12. ST7540 reference design board (Rev 2.0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 13. Motor control evaluation board EVAL6207N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 14. DFU graphic user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 15. A simple schematic of the PLC application environment . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 16. The main window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Figure 17. Stepper motor GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 18. DC motor driving GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 19. Power dissipation and thermal analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 20. Industrial Communication Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 21. Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 22. Industrial Communication Board and power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

System overview UM0240
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1 System overview
The ST Industrial Communication Board is a general purpose board developed around the
following principles:
●Provide a reliable communication channel between a controlling PC and Industrial
reference design boards
●Provide flexibility, one board to control all Industrial reference designs
●Run dedicated firmware (FW) available for all reference designs
●Interact with dedicated software (SW) implementing reference design Graphical User
Interface (GUI)
This enables ST Industrial customers to control and test all products using the same
controlling platform.
The ST Industrial Communication Board is based on a ST72F651AR6 USB microcontroller,
providing as main interface to controlling Personal Computer a standard 12 Mbs USB,
available on all modern PCs. This provides very easy interconnections to globally available
laboratory equipment. An RS232 interface is present too, and can be used as spare
communication port.
Specific interfaces to reference design boards are present to provide flexibility towards
different applications.
A 10-bit Digital to Analog Converter (DAC) and high gain, high bandwidth amplifiers are
present on board.
Jumpers, switches and LEDs give further adaptability and visualization tools.
A full range of dedicated FW, GUIs and reference design boards are available for every ST
Industrial product, fully compatible with the ST Industrial Communication Board.

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2 Power supply
Board components require the following voltage supplies.
These supplies are all derived from an input power supply that can be taken from four
different sources:
1. PLM 10V: connected to the 10V line of the PLM connector
2. 5V Motor: connected to the 5V line of the Motor connector
3. Phone Jack: external connector, compatible with common notebook power supply
connectors, bringing power supply in the 5V÷ 35V range
4. USB 5V: connected to the 5V line of the USB supply
This enhanced flexibility of source and source voltage selection coexists due to diodes D7,
D8, D10 and D12, which prevent the reverse current flowing in the supply inputs, keeping
different sources independent.
The higher voltage input will be the dominant supply.
LED D11 is turned on when the power supply is active.
Table 1. Voltages present on board
Function Supply Converter Device Input Range Output Value
Main Power
Supply VDD
Switching
Converter
(Buck)
L5973D 5V ÷ 35V 5V
MCU Flash
Programming VPP
Regulated
Charge Pump
Converter
ST662A (pin VOUT) Vdd 12V
OpAmp negative
supply -5V Non regulated Charge Pump ST662A (pin C1-) Vdd -5

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Figure 1. Main power supply

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Figure 2. Flash programming and OpAmp power supply

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Figure 3. Power supplies PCB area
2.1 Main power supply (VDD)
The main power supply system of Industrial Com Board consists of a DC-DC switching
converter based on step-down regulator L5973 from ST. The switching regulator is designed
to provide 5V (VDD) stabilized on the output with an input range 5V ÷ 35V and it can be
assembled in the two following configurations:
●Buck: referring to Figure 1, the N-MOS M1 is removed and the diode D9 is replaced
with a short
●Buck-Boost (not optimized)
2.2 MCU Flash programming (VPP)
A second power supply is implemented in the Industrial board, in order to provide the 12V
voltage supply required by the microcontroller during the In-Application Programming (IAP)
of the embedded Flash memory.
This power supply consists in a charge pump DC-DC regulator implemented by the ST
device ST662A, which is a step-up converter designed for the Flash memory programming.
Note that the charge pump converter is itself supplied by the switching regulator output VDD.
The device can be shut down through line PD3 of the microcontroller, in order to reduce
power consumption and noise when IAP is not needed.