【合辑】世平集团4类典型无线智能LED调光驱动方案

近年来，世界上一些经济发达国家围绕LED的研制展开了激烈的技术竞赛。城市智能照明系统作为智慧城市的核心子系统，运用无线ZigBee、Wi-Fi、BLE等多种物联网和IT技术，实现了远程单灯开关、调光、检测等管控功能。为应对这一市场趋势，世平集团推出四款无线智能 LED 调光驱动方案。

1、Zigbee LED智能照明调光方案

方案模块图如下：

 

4、数字PWM调光AC-DC LED 驱动方案

NXP SSL2129AT LED 驱动

Key Features：

IC used: SSL2129AT

AC line input voltage: 196 V to 264 V

Output voltage: 32 V (DC) to 48 V (DC)

uutput current: 240 mA (at Vout = 40 V)

Maximum power into LED load: 12 W

Efficiency: > 82 %

Power Factor: > 0.9 (at 12 W)

THD: < 30 % (at 12 W)

Line regulation: ± 8%

Board dimensions: 63mm x 34mm x 25mm (internal board)

Operating temperature: - 40 °C to +100 °C

Mains harmonics: IEC61000-3-2

EMC compliancy: IEC55015
 
NXP SSL2129AT LED 驱动照片


ON NCL30082 LED 驱动电路图


Key Features：

Quasi−resonant Peak Current−mode Control Operation

Primary Side Sensing (no optocoupler needed)

Wide VCC Range

Source 300 mA / Sink 500 mA Totem Pole Driver with 12 V Gate Clamp

Precise LED Constant Current Regulation 1% Typical

Line Feed−forward for Enhanced Regulation Accuracy

Low LED Current Ripple

50 mV ±2% Guaranteed Voltage Reference for Current Regulation

~ 0.9 Power Factor with Valley Fill Input Stage

Low Start−up Current (13 ｕA typ.)

Analog or Digital Dimming

Thermal Fold−back

Wide Temperature Range of −40 to +125 C

ON NCL30082 LED 驱动照片
 
TI LM3445 LED 驱动电路图


Key Features：

Drop-in compatibility with PWM and Phase dimmers

Line injection circuitry enables PFC values greater than 0.95

Adjustable LED current and switching frequency

Flicker free operation

TI LM3445 LED 驱动照片


扩展阅读：

非隔离高压（400V）LED驱动IC方案
TI三大高效率LED驱动器方案精选
高效率（>90%）可调光/无闪LED驱动方案