Infineon ICL8001G 9W离线LED照明解方案

关键词： icl8001g , infineon , led照明 , 离线
infineon公司的icl8001g采用准谐振工作模式的单级反激和pfc控制器,功率因素大于98%,led驱动器效率高达90%,工作电压高达26v,内置数字软起动,初级pfc和调光控制采用精密的pwm.本文介绍了icl8001g产品亮点和主要特性,方框图,应用电路以及评估板eval-led-icl8001g-bulb02特性,电路图,材料清单和变压器电路图.
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 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
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图1. icl8001g方框图
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图2. icl8001g初级边控制的应用电路图
评估板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.
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图3. 评估板eval-led-icl8001g-bulb02外形图
评估板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
评估板eval-led-icl8001g-bulb02主要指标:
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图4. 评估板eval-led-icl8001g-bulb02电路图
评估板eval-led-icl8001g-bulb02材料清单:
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图5. 评估板eval-led-icl8001g-bulb02变压器电路图
详情请见:
application_note_icl8001g.pdf(3.64 mb, 下载次数: 0)2012-6-26 11:31:53 上传
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和
datasheet_icl8001g vers 1.pdf(614.69 kb, 下载次数: 0)2012-6-26 11:32:06 上传
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