Powerint LNK406EG 14W PWM－模拟调光LED驱动方案
关键词：
led驱动 , lnk406eg , powerint , pwm , 模拟调光
powerin的参考设计der263是采用linkswitchtm-ph系列lnk406eg的14w pwm-模拟调光led驱动器,led串的电压电流为28v/500a,输入电压范围从90vac到265vac,高效率,230vac时的pfc大于87%,115vac时的pfc大于86%,功率因素大于0.9,满足en61000-3-2 class c,1000:1调光范围.本文介绍了14w pwm-模拟调光led驱动器主要特性和指标,电路图,材料清单与pcb布局图.
the document describes a high power-factor secondary referenced, analog dimmable led driver. the circuit is designed to drive a nominal led string voltage of 28 v at 500 ma from an input voltage range of 90 vac to 265 vac. the led driver utilizes the lnk406eg from the linkswitch-ph family of ics.
analog dimming is controlled by an external secondary referenced analog control signal of 0-10 v. 0 volts correspond to minimum light output and 10 v corresponds to maximum brightness. the analog controlled signal is transferred to the primary-side and controls the feedback current ifb of lnk406eg which in turn controls the output power/light output of the driver while maintaining high power factor and low thd.
an active load circuit and control are also included to extend dimming ratio beyond 1000:1 but may be omitted if extended dimming operation is not required.
this document contains the led driver specification, schematic, pcb diagram, bill of materials, conducted emi measurements, thermal measurements, transformer documentation and typical performance characteristics.
14w pwm-模拟调光led驱动器主要特性:
high efficiency, power factor corrected
o >87% at 230 vac and >86% at 115 vac
o >0.9 pf, meets en61000-3-2 class c
0-10 v analog dimming
o >1000:1 dimming range
low cost, low component count and small printed circuit board footprint
o no current sensing required
o frequency jitter for smaller, lower cost emi filter components
integrated protection and reliability features
o output open circuit / output short-circuit protected with auto-recovery
o line input overvoltage shutdown extends voltage withstand during line faults.
o auto-recovering thermal shutdown with large hysteresis protects both components and printed circuit board
2012-1-18 12:23:53 上传
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图1.14w pwm-模拟调光led驱动器外形图:上:顶视图,下:底视图
14w pwm-模拟调光led驱动器主要指标:
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图2.14w pwm-模拟调光led驱动器电路图
14w pwm-模拟调光led驱动器材料清单:
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图3.变压器框图
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图3.14w pwm-模拟调光led驱动器pcb布局图:上:顶层,下:低层
详情请见:
der263[1].pdf(8.47 mb, 下载次数: 3)2012-1-18 12:23:23 上传
下载次数: 3
下载积分: 积分 -1
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powerin的参考设计der263是采用linkswitchtm-ph系列lnk406eg的14w pwm-模拟调光led驱动器,led串的电压电流为28v/500a,输入电压范围从90vac到265vac,高效率,230vac时的pfc大于87%,115vac时的pfc大于86%,功率因素大于0.9,满足en61000-3-2 class c,1000:1调光范围.本文介绍了14w pwm-模拟调光led驱动器主要特性和指标,电路图,材料清单与pcb布局图.
the document describes a high power-factor secondary referenced, analog dimmable led driver. the circuit is designed to drive a nominal led string voltage of 28 v at 500 ma from an input voltage range of 90 vac to 265 vac. the led driver utilizes the lnk406eg from the linkswitch-ph family of ics.
analog dimming is controlled by an external secondary referenced analog control signal of 0-10 v. 0 volts correspond to minimum light output and 10 v corresponds to maximum brightness. the analog controlled signal is transferred to the primary-side and controls the feedback current ifb of lnk406eg which in turn controls the output power/light output of the driver while maintaining high power factor and low thd.
an active load circuit and control are also included to extend dimming ratio beyond 1000:1 but may be omitted if extended dimming operation is not required.
this document contains the led driver specification, schematic, pcb diagram, bill of materials, conducted emi measurements, thermal measurements, transformer documentation and typical performance characteristics.
14w pwm-模拟调光led驱动器主要特性:
high efficiency, power factor corrected
o >87% at 230 vac and >86% at 115 vac
o >0.9 pf, meets en61000-3-2 class c
0-10 v analog dimming
o >1000:1 dimming range
low cost, low component count and small printed circuit board footprint
o no current sensing required
o frequency jitter for smaller, lower cost emi filter components
integrated protection and reliability features
o output open circuit / output short-circuit protected with auto-recovery
o line input overvoltage shutdown extends voltage withstand during line faults.
o auto-recovering thermal shutdown with large hysteresis protects both components and printed circuit board
2012-1-18 12:23:53 上传
下载附件 (77.39 kb)
2012-1-18 12:23:53 上传
下载附件 (91.37 kb)
图1.14w pwm-模拟调光led驱动器外形图:上:顶视图,下:底视图
14w pwm-模拟调光led驱动器主要指标:
2012-1-18 12:23:53 上传
下载附件 (25.52 kb)
2012-1-18 12:23:53 上传
下载附件 (40.12 kb)
图2.14w pwm-模拟调光led驱动器电路图
14w pwm-模拟调光led驱动器材料清单:
2012-1-18 12:23:53 上传
下载附件 (114.73 kb)
2012-1-18 12:23:53 上传
下载附件 (47.2 kb)
2012-1-18 12:23:53 上传
下载附件 (5.55 kb)
图3.变压器框图
2012-1-18 12:23:53 上传
下载附件 (30.95 kb)
2012-1-18 12:23:53 上传
下载附件 (44.9 kb)
图3.14w pwm-模拟调光led驱动器pcb布局图:上:顶层,下:低层
详情请见:
der263[1].pdf(8.47 mb, 下载次数: 3)2012-1-18 12:23:23 上传
下载次数: 3
下载积分: 积分 -1
我国“5G＋工业互联网”叠加倍增效应正在显现
全局设备感知系统的结构组成及方案实现
查看linux系统磁盘io情况的办法是什么
TPS55289：为个人电子产品有线/无线充电提供最优解决方案
聚焦信创人才培养 积蓄产业发展动力｜2022年度＂强国杯＂智能网联技术应用赛项颁奖典礼暨信创人才发展论
Powerint LNK406EG 14W PWM－模拟调光LED驱动方案
无线通信企业七一二发布2022第一季度报告
Molex解决电动汽车充电的关键设计难题
洁净空调数据采集远程监控物联网系统
ROHM亮相“2016慕尼黑上海电子展”
努比亚Z11mini、华为P9拍照对比评测：谁更厉害？
深圳市时创意电子有限公司存储集成电路产业基地开建
数码多能一体机静态拍摄/动态拍摄
功能服务器的接口
长虹 成功研发首款国产5G模组
特勒根定理如何理解
5G时代基站天线数需求成倍增长,5G终端连接数超过1.5亿部
北斗时代即将来临 你再也不用跟导航吵架了
机器人教育成为教育领域发展的必然趋势
[组图]稳压电源的质量指标