ICL8001G是Infineon公司的准谐振模式LED驱动器,精密的PWM可用于相位调光,功率因素大于98%,效率高达90%,工作电压高达26V。本文介绍了ICL8001G主要特性和亮点,方框图以及初级控制应用电路图和EVAL-LED-ICL8001G-Bulb02演示板主要特性,电路图,材料清单和变压电路图。
ICL8001G 产品亮点:
? Quasi-Resonant Control For Highly Efficient LED Driving SoluTIons
? Primary Side Flyback Control With Integrated PFC And Phase-Cut Dimming
? Integrated HV Startup Cell For Short TIme To Light
? Best In Class System BOM For Dimmable LED Bulb
ICL8001G主要特性:
? High, stable efficiency over wide operaTIng range
? OpTImized for trailing- and leading-edge dimmer
? Precise PWM for primary PFC and dimming control
? Power cell for Vcc pre-charging with constant current
? Built-in digital soft-start
? Foldback correction and cycle-by-cycle peak current limitation
? VCC over/ under-voltage lockout
? Auto restart mode for short circuit protection
? Adjustable latch-off mode for output overvoltage protection
图1。ICL8001G方框图
图2。ICL8001G初级控制应用电路图
EVAL-LED-ICL8001G-Bulb02演示板
EVAL-LED-ICL8001G-Bulb02 Quasi-Resonant Flyback Converter for Phase Cut Dimming with High Power Factor
The EVAL-LED-ICL8001G-Bulb02 demonstrates the single-stage flyback and PFC controller ICL8001G in an LED Bulb application. Its quasiresonant operation mode, primary side control, integrated PFC and phase-cut dimming control makes it the best in class system solution for dimmable LED bulbs.
EVAL-LED-ICL8001G-Bulb02演示板主要特性:
?High, stable efficiency over wide operating range through quasiresonant operation mode
?Primary side side flyback control with integrated PFC and phase-cut dimming
?Energy efficient phase cut dimming
?Power cell for VCC pre-charging with constant current
?Built-in digital soft-start
?Foldback correction and cycle-by-cycle peak current limitation
?VCC over- and under-voltage lockout
?Auto restart mode for short circuit protection
?Adjustable latch-off mode for output overvoltage protection
?Best in class system BOM for dimmable bulbs
图3。EVAL-LED-ICL8001G-Bulb02演示板外形图
图4。EVAL-LED-ICL8001G-Bulb02演示板电路
EVAL-LED-ICL8001G-Bulb02演示板材料清单(BOM):
图5。EVAL-LED-ICL8001G-Bulb02演示板变压器电路图
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