ST STEVAL-ILH007V1 User manual

June 2015 DocID025509 Rev 1 1/30
30
UM1694
User manual
STEVAL-ILH007V1: 150W HID digital ballast based on STLUX385A
Introduction
This document describes 150 W high intensity discharge (HID) digital ballasts driven by
STLUX385A devices. This platform is a solution to drive HID lamps (sodium and metal
halide). The board is composed of two stages:
1. Power factor corrector (PFC), based on boost topology to correct the AC input current
in phase with AC voltage mains.
2. Inverter, based on full bridge topology to drive the lamps.
The STLUX385A digital controller drives both stages.
Figure 1. STEVAL-ILH007V1
www.st.com

Contents UM1694
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Contents
1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1 STEVAL-ILH007V1 firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.1.1 Implemented peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.2 Used pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.3 Module summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Firmware download into the STLUX MCU . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 STEVAL-ILH007V1 evaluation board operation . . . . . . . . . . . . . . . . . . 18
5.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Appendix A STEVAL-ILH007V1 schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6 Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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UM1694 List of tables
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List of tables
Table 1. Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 2. Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. HID FW user source file list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 4. Used pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Table 5. Module information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 6. Executable summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 7. Bill of material (BOM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table 8. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

List of figures UM1694
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List of figures
Figure 1. STEVAL-ILH007V1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Figure 2. Top layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. STEVAL-ILH007V1 block diagram of the firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 5. STEVAL-ILH007V1 finite state machine lamp management . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 6. SMED4 PFC state machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 7. SMED0 bridge low side drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 8. SMED1 bridge high side drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 9. Voltage reference for bridge peak current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 10. RLink. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 11. RLink-ADP-ST7-STM8-V1.2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 12. RFlasher7 configuration - select the processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 13. RFlasher7 configuration - open .HEX file . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 14. RFlasher7 configuration - program the STLUX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 15. STVP - download FW into the program memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 16. Auxiliary power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 17. PFC and input section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 18. Full-bridge scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 19. Control section scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

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UM1694 Features
30
1 Features
The STEVAL-ILH007V1 board has the following features:
•GREEN LED: indicates the normal operation of the board
•RED LED: indicates the fault condition of the board
•UART: connector for serial data communication to a PC to monitor the system
parameters.
Table 1. Features
Parameter Notes and conditions Min. Typ. Max. Unit
Input characteristics
V
in
input voltage 185 230 265 V
Eff efficiency V
in
= 230 V, load = 150 W 90 %
PF power factor V
in
=185 V; load = 150 W 0.98
THD% input current THD V
in
=185 V; load = 150 W 10 %
Load characteristics
Load lamp type sodium or metal halide
Pout lamp power 150 W
Iout lamp current 1.6 A

Connectors UM1694
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2 Connectors
With reference to the schematic in Appendix A:
Figure 2. Top layout
Figure 3. Bottom layout

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30
Table 2. Connectors
Pin Description
J1 Power supply connector / 230Vac – 3 way screw terminal
J2 Power connector for power line modem / 230V - 2 way screw terminal
J3 Output connector for lamp connection - 2 way screw terminal
J4 Connector for UART output- 24 way terminals
J5 SWIM Connector to FW download and debug
J7 DALI Connector 12 way terminals
J8 UART output - stereo jack connector 3.5mm

Firmware UM1694
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3 Firmware
The MCU used is an STLUX385A, which is part of the MASTERLUX™ family of ST digital
devices tailored for lighting and power conversion. The STLUX385A has been successfully
integrated in a wide range of architectures and applications, including simple buck
converters for LED driving, boosts for power factor correction, half-bridge resonant
converters for dimmable LED strings, full-bridge control in HID lamp ballasts, wireless power
chargers and TV power supplies.
This MCU has 16 MHZ CPU frequency, 32 Kbyte program memory and 2 Kbyte of RAM.
The firmware is organized as a collection of files inside a project for Raisonance RIDE7, a
fully-featured Integrated Development Environment (IDE) that provides seamless
integration and easy access to the complete range of Raisonance tools and features for
writing, compiling and debugging application code from a single user interface.
The firmware is released as an Intel HEX file (Rev01.HEX).
3.1 STEVAL-ILH007V1 firmware
The firmware running the STLUX385A of the STEVAL-ILH007V1 allows the MCU to
manage the PFC and full-bridge of the board.
STEVAL-ILH007V1 is also able to manage UART communication with a PC to show system
status information.
Following CPU clock and peripheral configuration, the MCU manages the board as a finite
state machine, as shown below.
Figure 4. STEVAL-ILH007V1 block diagram of the firmware

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30
Figure 5. STEVAL-ILH007V1 finite state machine lamp management
The following table lists the user source.c files for the STEVAL-ILH007V1.
3.1.1 Implemented peripherals
Analog to Digital Converter (ADC)
Table 3. HID FW user source file list
File Brief descriptions
main.c Main module
adc.c ADC peripheral configuration
stlux_smed.c Automatically generated by SMED_Configurator, a PC software application
stlux_it.c Manages the IRQ functions
stmr.c Manage the requested timing
uart.c
•ADC0 VIN Measures the main input voltage
•ADC1 VBUS Measures the output voltage of the PFC stage
•ADC2 PFC_ISENS Currently not used
•ADC3 PFC_OK Currently not used
•ADC4 VLAMP Measures of the voltage across the lamp
•ADC5 VOUT33 Checks the presence of the 3.3 V voltage regulator
•ADC6 VTEMP Measures the temperature of the board; the sensor is
currently not calibrated

Firmware UM1694
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Analog comparators
16-bit system timer
State machine event driven
CPP0 Currently not used
CPP1 Currently not used
CPP2 Currently not used
CPP3 Sets the bridge peak current value
STMR Sets the correct timing of all events for the application:
– PID controller
– drive signals of the bridge
– systems state machine
SMED0 Provides for the high frequency signal generation of the
bridge; it is also used for ZCD signal synchronization and
bridge peak current control
SMED1 Provides for the high frequency signal generation of the
bridge; it is also used for ZCD signal synchronization and
bridge peak current control
SMED2 Currently not used
SMED3 Currently not used
SMED4 Generates the signals for the PFC switch
SMED5 Generates the reference voltage for CPP3 comparator