PowerintLNK417EG15WLED驱动解决方案(DER289)
2011-11-23
作者：Powerint公司
</a>LED" title="LED">LED" title="LED">LED驱动器采用LinkSwitchTM-PH LNK417EG器件和±3% CC调整,具有高效率,功率因素大于0.9,AC输入电压90V-265V,满足IEC 61000-4-5环形波, IEC 61000-3-2 Class C谐波和EN55015 B接触EMI要求,起动时间小于100ms.本文介绍了该驱动器主要特性和指标, 驱动器和子板电路图以及相应的材料清单与PCB布局图.
This document describes an isolated, power factor corrected, very high efficiency LED driver (non-dimmable) designed to drive an LED string of 30 V at a current of 500 mA(both nominal) from an input voltage range of 90 VAC to 265 VAC. The design employs a secondary side current feedback circuit to achieve less than 3% output current regulation over line and load. A reference board DER-284 was used with the secondary constant current regulation daughter board added to demonstrate how this technique can be used on and LinkSwitch-PH flyback design.
The LED driver uses a LNK417EG device from the LinkSwitch-PH family of ICs. This integrated controller and 725 V MOSFET dramatically reduces complexity and omponent count.
This document contains the LED driver specification, schematic, and bill of material,transformer documentation and typical performance characteristics.
15W LED驱动器主要特性:
≤3% output current regulation over line and load
Highly energy efficient
Efficiency ≥88% at 115 VAC and 230 VAC input
Low cost, low component count and small printed circuit board footprint solution
Frequency jitter for smaller, lower cost EMI filter components
Integrated protection and reliability features
Output open-circuit / output short-circuit protection with auto-recovery
Line input overvoltage shutdown extends voltage withstand during line faults.
Auto-recovering thermal shutdown with large hysteresis protects both components
and printed circuit board
No damage during brown-in or brown-out conditions
Meets IEC 61000-4-5 ring wave, IEC 61000-3-2 Class C harmonics and EN55015 B conducted EMI
Clean start-up – no output blinking
Fast start-up (<100 ms) – no perceptible delay
图1.15W LED驱动器外形图
15W LED驱动器指标:
图2.15W LED驱动器电路图
图3.15W LED驱动器子板电路图
图4.15W LED驱动器PCB布局图
图5.子板PCB布局图
15W LED驱动器材料清单:
子板材料清单:
图6.变压器电路图
详情请见:
http://www.powerint.com/sites/default/files/PDFFiles/der289.pdf
This document describes an isolated, power factor corrected, very high efficiency LED driver (non-dimmable) designed to drive an LED string of 30 V at a current of 500 mA(both nominal) from an input voltage range of 90 VAC to 265 VAC. The design employs a secondary side current feedback circuit to achieve less than 3% output current regulation over line and load. A reference board DER-284 was used with the secondary constant current regulation daughter board added to demonstrate how this technique can be used on and LinkSwitch-PH flyback design.
The LED driver uses a LNK417EG device from the LinkSwitch-PH family of ICs. This integrated controller and 725 V MOSFET dramatically reduces complexity and omponent count.
This document contains the LED driver specification, schematic, and bill of material,transformer documentation and typical performance characteristics.
15W LED驱动器主要特性:
≤3% output current regulation over line and load
Highly energy efficient
Efficiency ≥88% at 115 VAC and 230 VAC input
Low cost, low component count and small printed circuit board footprint solution
Frequency jitter for smaller, lower cost EMI filter components
Integrated protection and reliability features
Output open-circuit / output short-circuit protection with auto-recovery
Line input overvoltage shutdown extends voltage withstand during line faults.
Auto-recovering thermal shutdown with large hysteresis protects both components
and printed circuit board
No damage during brown-in or brown-out conditions
Meets IEC 61000-4-5 ring wave, IEC 61000-3-2 Class C harmonics and EN55015 B conducted EMI
Clean start-up – no output blinking
Fast start-up (<100 ms) – no perceptible delay
图1.15W LED驱动器外形图
15W LED驱动器指标:
图2.15W LED驱动器电路图
图3.15W LED驱动器子板电路图
图4.15W LED驱动器PCB布局图
图5.子板PCB布局图
15W LED驱动器材料清单:
子板材料清单:
图6.变压器电路图
详情请见:
http://www.powerint.com/sites/default/files/PDFFiles/der289.pdf
本站内容除特别声明的原创文章之外，转载内容只为传递更多信息，并不代表本网站赞同其观点。转载的所有的文章、图片、音/视频文件等资料的版权归版权所有权人所有。本站采用的非本站原创文章及图片等内容无法一一联系确认版权者。如涉及作品内容、版权和其它问题，请及时通过电子邮件或电话通知我们，以便迅速采取适当措施，避免给双方造成不必要的经济损失。联系电话：010-82306118；邮箱：aet@chinaaet.com。