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Infineon公司的ICL8001G采用準諧振工作模式的單級反激和PFC控制器,功率因素大于98%,LED驅動器效率高達90%,工作電壓高達26V,內置數字軟起動,初級PFC和調光控制采用精密的PWM.本文介紹了ICL8001G產品亮點和主要特性,方框圖,應用電路以及評估板EVAL-LED-ICL8001G-Bulb02特性,電路圖,材料清單和變壓器電路圖. 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產品亮點: • 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 
圖1. ICL8001G方框圖
圖2. ICL8001G初級邊控制的應用電路圖 評估板EVAL-LED-ICL8001G-Bulb02 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.
圖3. 評估板EVAL-LED-ICL8001G-Bulb02外形圖 評估板EVAL-LED-ICL8001G-Bulb02主要特性: •High, stable efficiency over wide operating range through quasiresonant operation mode •  rimary side side flyback control with integrated PFC and phase-cut dimming•Energy efficient phase cut dimming • ower 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 評估板EVAL-LED-ICL8001G-Bulb02主要指標:
評估板EVAL-LED-ICL8001G-Bulb02材料清單:
詳情請見: 
Application_Note_ICL8001G.pdf
(3.64 MB)
Datasheet_ICL8001G vers 1.pdf
(614.69 KB)
來源：網絡 |
