ST STEVAL-ILH007V1 Manual de usuario

June 2015 DocID025509 Rev 1 1/30

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

2/30 DocID025509 Rev 1

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

DocID025509 Rev 1 3/30

UM1694 List of tables

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

4/30 DocID025509 Rev 1

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

DocID025509 Rev 1 5/30

UM1694 Features

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

input voltage 185 230 265 V

Eff efficiency V

= 230 V, load = 150 W 90 %

PF power factor V

=185 V; load = 150 W 0.98

THD% input current THD V

=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

6/30 DocID025509 Rev 1

2 Connectors

With reference to the schematic in Appendix A:

Figure 2. Top layout

Figure 3. Bottom layout

DocID025509 Rev 1 7/30

UM1694 Connectors

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

8/30 DocID025509 Rev 1

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

DocID025509 Rev 1 9/30

UM1694 Firmware

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

10/30 DocID025509 Rev 1

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

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