ST STLUX385A 100W LED街灯照明解决方案

ST公司的STLUX385A是用于照明和电源转换的数字器件STLUX系列产品,集成了各种架构和应用功能,包括用来驱动多个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LED串的半桥谐振转换器和用于HID灯的全桥控制器.本文介绍了STLUX385A主要特性,内部框图和内部设计图,以及100W LED街灯照明演示板STEVAL385LEDPSR主要特性,电路图和材料清单.
The STLUX385A device is part of the STLUX™ family of STMicroelectronics® digital devices tailored for lighting and power conversion applications. The STLUX385A has 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.
The heart of the STLUX385A device is the SMED (state machine event driven) technology which allows the device to operate six independently configurable PWM clocks with a maximum resolution of 1.3 ns. A SMED is a powerful autonomous state machine, which is programmed to react to both external and internal events and may evolve without any software intervention. The SMED reaction time can be as low as 10.4 ns, giving the STLUX385A the ability of operating in time critical applications. The SMED offers superior performance when compared to traditional, timer based, PWM generators.
Each SMED is configured via the STLUX385A internal microcontroller. The integrated controller extends the STLUX385A reliability and guarantees more than 15 years of both operating lifetime and memory data retention for program and data memory after cycling.
A set of dedicated peripherals complete the STLUX385A:
 4 analog comparators with configurable references and 50 ns max. propagation delay.
   It is ideal to implement zero current detection algorithms or detect current peaks.
 10-bit ADC with configurable op amp and 8-channel sequencer.
 DA...