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[原创] ST STLUX385A 150W HID数字镇流器解决方案

关键词:电源管理 照明电源 HID LED DC/DC转换器 STLUX385A

时间:2014-11-11 10:59:07       作者:ST       来源:中电网

ST公司的STLUX385A是用于照明和电源转换的具有六个PWM发生器,96MHz PLL和DALI的数字控制器.器件集成了各种架构和应用,如驱动多个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灯镇流器的全桥控制器.本文介绍了STLUX385A主要特性,内部框图,以及基于STLUX385A的150W HID数字镇流器STEVAL-ILH007V1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 applic..

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