您现在的位置是:首页 > 电源

基于ICL8001G设计的准谐振模式LED驱动技术

2022-03-16 23:17:07

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