数字PWM调光LED驱动：
NXP SSL2129AT LED 驱动：
·IC used: SSL2129AT
·AC line input voltage: 196 V to 264 V
·Output voltage: 32 V (DC) to 48 V (DC)
·Output 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
ON NCL30082 LED 驱动：
·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
·250 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
TI LM3445 LED 驱动：
·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
