原标题：ST STLUX385A 100W街灯照明解决方案

　　ST公司的STLUX385A是集成了多达6个可编程PWM发生器,96MHz PLL和数字可寻址照明接口(DALI),PWM分辨率为1.3ns,CPU频率为16MHz,总线频率为1.2, 2.4或4.8 kHz,器件具有多种架构和应用,包括驱动多个LED串的降压转换器,用于PFC的升压转换器,用于大功率可调光的半桥谐振转换器和用于HID灯镇流器的全桥控制器.本文介绍了STLUX385A主要特性,框图,以及100W街灯照明解决方案STEVAL-ILL066V1主要特性,框土,电路图和材料清单.

　　The STLUX™ family of controllers is a part of the STMicroelectronics®digital devices tailored for lighting and power conversion applications. The STLUX controllers have been successfully integrated in a wide range of architectures and applications, starting from simple buck converters for driving multiple LED strings, boost for power factor corrections, half-bridge resonant converters for high power dimmable LED strings and up to full bridge controllers for HID lamp ballasts.

　　STLUX385A主要特性:

　　Up to 6 programmable PWM generators (SMEDs-“State Machine Event Driven”)

　　10 ns event detection and reaction

　　Max.1.3 ns PWM resolution

　　Single, coupled and two coupled operational modes

　　Up to 3 internal/external events per SMED

　　DALI (digital addressable lighting interface)

　　Interrupt driven hardware encoder

　　Bus frequency: 1.2, 2.4 or 4.8 kHz

　　IEC 60929 and IEC 62386 compliant plus 24-bit frame extension

　　Configurable noise rejection filter

　　Reverse polarity on Tx/Rx lines

　　4 analog comparators

　　4 internal 4-bit references

　　1 external reference

　　Less than 50 ns propagation time

　　Continuous comparison cycle

　　ADCs (up to 8 channels)

　　10-bit precision, with operational amplifier to extend resolution to 12-bit equivalent

　　Sequencer functionality

　　Input impedance: 1 MΩ

　　Configurable gain value: x1 and x4

　　Integrated microcontroller

　　Advanced STM8® core with Harvard architecture and 3-stage pipeline

　　Max. fCPU : 16 MHz

　　Multiple low power modes

　　Memories

　　Flash and E2 PROM with read while write (RWW) and error correction code (ECC)

　　Program memory: 32 Kbytes Flash; data retention 15 years at 85 ℃ after 10 kcycles at 25℃

　　Data memory: 1 Kbyte true data E2 PROM; data retention:15 years at 85℃

　　after 100 kcycles at 85℃

　　RAM: 2 Kbytes

　　Clock management

　　Internal 96 MHz PLL

　　Low power oscillator circuit for external crystal resonator or direct clock input

　　Internal, user-trimmable 16 MHz RC and low power 153.6 kHz RC oscillators

　　Clock security system with clock monitor

　　Basic peripherals

　　System and auxiliary timers

　　IWDG/WWDG watchdog, AWU, ITC

　　I/O

　　GPIO with highly robust design, immune against current injection

　　Fast digital input DIGIN, with configurable pull-up

　　Communication interfaces

　　UART asynchronous with SW flow control and boot loader support

　　I2 C master/slave fast-slow speed rate

　　Operating temperature: -40℃ up to 105℃

　　图1.STLUX385A框图

　　采用STLUX385A的100W街灯照明解决方案STEVAL-ILL066V1

　　The STEVAL-ILL066V1 evaluation board provides all the physical communication interfaces such as a DALI, insulated 0-10 and UART. All the communication is managed by the STLUX385A device. The UART interface and STLUX385A flexibility allow to quickly connect the STEVAL-ILL066V1 to alternative interfaces such as Wi-Fi, power line modems, Bluetooth®andZigbee®. (Previous part number was STEVAL385LEDPSR).

　　STEVAL-ILL066V1主要特性:

　　· Wide input voltage range: 90 V to 265 V AC (50 or 60 Hz) compliant with IEC61000-3-2

　　· Single isolated output suitable for LED connection.

　　· Output voltage range (hardware configurable):

　　– Standard version: 30 V to 100 V

　　– High voltage version: 60 V to 200 V

　　· Output current and dimmability range:

　　– Standard version: from 10 mA to 1000 mA

　　– High voltage range: from 5 mA to 500 mA

　　· Output resolution: 11-bit equivalent.

　　· Maximum output power: 100 W

　　· Primary side control for higher efficiency (92% at full load)

　　· Faults detection and protection: short- or open circuit.

　　· IDLE mode power consumption: < 200 mW

　　· Remote control:

　　– DALI command [IEC62386 - plus extension 207 (LED)]

　　– Isolated serial line

　　– Isolated 0 - 10 V (alternative to DALI)

　　· Two status LEDs: green = ready-run-CPU load; red = fault

　　· Primary to secondary and interfaces isolation: 3750 V

　　图2.STLUX385A PSR-ZVS评估板外形图

　　图3.STLUX385A PSR-ZVS评估板框图

　　STLUX385A PSR-ZVS评估板材料清单: