ST STEVAL-ILL019V1 35W 4路HB RGGB LED驱动方案

ST 公司的STEVAL-ILL019V1是基于L6562A 的离线35W 4路HB RGGB LED驱动器，LED恒定电流350mA，交流输入电压88V-265VAC，每路可驱动5-13个LED，RGGB LED最大功率32W（宽输入电压）或42W（EU输入电压），和EN55015 与EN61000-3-2兼容。本文介绍了L6562A主要特性，方框图，EVL6562A-TM-80W和EVL6562A-400W演示板的电路图，以及STEVAL-ILL019V1主要特性，方框图，高PF反激转换器电路图与四路可调整降压转换器和微控制器电路图，材料清单。
The L6562A is a current-mode PFC controller operating in Transition Mode (TM). Coming with the same pin-out as its predecessors L6561 and L6562, it offers improved performance.
The highly linear multiplier includes a special circuit, able to reduce AC input current distortion, that allows wide-range-mains operation with an extremely low THD, even over a large load range.
The output voltage is controlled by means of a voltage-mode error amplifier and an accurate (1% @TJ = 25℃) internal voltage reference.
The device features extremely low consumption (60μA max. before start-up and <5 mA operating) and includes a disable function suitable for IC remote ON/OFF, which makes it easier to comply with energy saving requirements (Blue Angel, EnergyStar, Energy2000, etc.).
An effective two-step OVP enables to safely handle overvoltages either occurring at start-up or resulting from load disconnection.
The totem-pole output stage, capable of 600 mA source and 800 mA sink current, is suitable to drive high current MOSFETs or IGBTs. This, combined with the other features and the possibility to operate with the proprietary Fixed-Off-Time control, makes the device an excellent low-cost solution for EN61000-3-2 compliant SMPS in excess of 350W.
L6562A主要特性：
■ Proprietary multiplier design for minimum THD
■ Very accurate adjustable output overvoltage protection
■ Ultra-low (30μA) Start-up current
■ Low (2.5mA) quiescent current
■ Digital leading-edge blanking on current sense
■ Disable function on E/A input
■ 1% (@ TJ = 25℃) in...