Infineon ICL8001G准谐振模式LED驱动方案
Infineon公司的 ICL8001G是准谐振模式器，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--ICL8001G-Bulb02演示板主要特性，电路图，材料清单和变压电路图。
The ICL8001G employs quasi-resonant operation mode optimized for off-line LED lighting, especially dimmable LED bulbs for incandescent lamp replacement. Precise PWM generation enables primary control for phase cut dimming and high power factor PF>98%. Significant improved driver efficiency, up to 90%, compared to other conventional solutions. The product has a wide operation range (up to 26V) of IC voltage supply and lower power consumption. Multiple safety functions ensure a full system protection in failure situations. With its full feature set and simple application, the ICL8001G represents an outstanding choice for quasi-resonant flyback LED bulb designs combining feature set and performance at minimum BOM cost.
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 Cl 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
The ICL8001G employs quasi-resonant operation mode optimized for off-line LED lighting, especially dimmable LED bulbs for incandescent lamp replacement. Precise PWM generation enables primary control for phase cut dimming and high power factor PF>98%. Significant improved driver efficiency, up to 90%, compared to other conventional solutions. The product has a wide operation range (up to 26V) of IC voltage supply and lower power consumption. Multiple safety functions ensure a full system protection in failure situations. With its full feature set and simple application, the ICL8001G represents an outstanding choice for quasi-resonant flyback LED bulb designs combining feature set and performance at minimum BOM cost.
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 Cl 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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