《電子技術應用》
您所在的位置:首頁 > 電源技術 > 解決方案 > TITPS92070低功率離線LED照明解決方案

TITPS92070低功率離線LED照明解決方案

2011-10-14
作者:TI 公司
</a>LED" title="LED">LED" title="LED">LED照明的先進的PWM控制器" title="PWM控制器">PWM控制器,具有先進的調光接口,提供無損耗調光觸發控制電路。沒有低頻光照度波動,LED電流調整度優于5%,并可編最小LED電流,功率因素大于0.8。TPS92070集成了PWM MOSFET驅動器和熱關斷電路,主要用在LED照明燈,LED燈光源,LED聚光燈和LED投光燈。本文介紹了TPS92070主要特性,功能方框圖,應用框圖以及TPS92070EVM-648評估板主要特性,電路圖和材料清單。

The TPS92070 is an advanced PWM controller ideal for use in low-power, offline, LED lighting applications. The integrated dimming interface circuit of the TPS92070 features a non‐dissipative dimmer trigger control circuit. The TPS92070 controller provides DC LED current with no photometric ripple effects. The DC current also results in higher efficacy of the LEDs. The TPS92070 provides exponentially controlled light output based on the external dimmer position. High power factor is achieved with a valley fill circuit. Once a leading-edge dimmer is detected, the TPS92070 sets an output to disable the PFC circuit and thus optimizes driver operation. The LED current sense precision error amplifier implements deep dimming.

TPS92070主要特性:

Advanced Integrated Dimming Interface

Non-Dissipative TRIAC Dimmer Management

Lamp-to-Lamp Uniformity During Dimming

No Low-Frequency Photometric Ripple

Exponential Dimming Profile

Innovative Secondary-Side Feedback Eliminates Optocoupler Devices

LED Current Regulation better than 5%

Programmable Minimum LED Current

Valley Switching and DCM Operation for Reduced EMI and Improved Efficiency

Leading Edge Dimmer Detection

Power Factor > 0.8

Cycle-by-Cycle Current Limit Protection

Low Start-Up and Standby Currents

Integrated PWM MOSFET Driver

Thermal Shutdown

16-Pin, TSSOP package

TPS92070應用:

LED Light Bulb Replacement

LED Luminaires

LED Downlights

LED Wall Washers

圖1。TPS92070功能方框圖

圖2。TPS92070應用框圖

TPS92070EVM-648評估板

The TPS92070EVM-648 evaluation module (EVM) is a low power isolated flyback converter that provides 5 on-board LEDs with 370 mA of drive current from a nominal 230 VAC input. This EVM is designed to demonstrate the TPS92070 in a typical application where LEDs can be used for general illumination applications that require dimming.

This evaluation module uses the TPS92070 High Efficiency Integrated Dimming LED Lighting Driver Controller (TI Literature Number SLUSAN1) in a low power offline flyback converter to provide 370 mA to the on-board LED load. The input accepts a nominal 50 Hz, 230 VAC input voltage. The TPS92070EVM-648 is designed to be used with a leading edge triac dimmer switch in series with the input voltage to control the lumen output of the LEDs. The integrated dimming interface circuit on the TPS92070 provides exponentially controlled light output based on the external dimmer position.

This user’s guide provides the schematic, component list, assembly drawing, and test set up necessary to evaluate the TPS92070 in an AC input LED lighting application. To use an input voltage greater than 240 VAC, it is recommended the user change the fuse to one rated for at least 300 V at 1 A.

TPS92070EVM-648評估板主要特性:

• 180 VAC to 240 VAC input range

• LED current regulation of 370 mA, nominal

• 6 W output at 16.5 V

• Advanced integrated dimming interface

• Exponential dimming profile

• Programmable minimum LED Current

• Valley switching and DCM operation

• Leading edge dimmer detection

• Valley fill power factor correction

• Cycle by cycle current limit protection

TPS92070EVM-648評估板電性能指標:


圖3。推薦的TPS92070EVM-648評估板測試圖

圖4。TPS92070EVM-648評估板電路圖
TPS92070EVM-648評估板材料清單:
   

詳情請見:
http://www.ti.com/lit/ds/slusan1/slusan1.pdf

http://www.ti.com/lit/ug/sluu523/sluu523.pdf

 



本站內容除特別聲明的原創文章之外,轉載內容只為傳遞更多信息,并不代表本網站贊同其觀點。轉載的所有的文章、圖片、音/視頻文件等資料的版權歸版權所有權人所有。本站采用的非本站原創文章及圖片等內容無法一一聯系確認版權者。如涉及作品內容、版權和其它問題,請及時通過電子郵件或電話通知我們,以便迅速采取適當措施,避免給雙方造成不必要的經濟損失。聯系電話:010-82306118;郵箱:aet@chinaaet.com。
主站蜘蛛池模板: 欧美日韩中文字幕在线视频| 色欧美片视频在线观看| 夜夜燥天天燥2022| 中国大陆高清aⅴ毛片| 香港三级理论在线影院| 国产精品自在线拍国产手机版 | 7777奇米四色成人眼影| 欧洲精品在线观看| 亚洲熟妇丰满xxxxx| 立即播放免费毛片一级| 又爽又黄又无遮挡的视频在线观看| 韩国免费毛片在线看| 国产欧美va欧美va香蕉在线 | 美女扒开尿口让男人桶进| 国产亚洲精品资源在线26U| 成人自拍小视频| 国产福利你懂的| 2018天天干天天操| 国内大量揄拍人妻精品視頻| a级黄色一级片| 女教师巨大乳孔中文字幕| 三级台湾电影在线| 成人综合久久综合| 丰满少妇被猛烈进入无码| 日本大臿亚洲香蕉大片| 久久天天躁狠狠躁夜夜不卡| 日韩精品欧美国产精品忘忧草| 亚洲www网站| 欧美一卡2卡3卡四卡海外精品| 亚洲国产一二三精品无码| 欧美激情久久久久久久久| 亚洲精品91在线| 波多野结衣作品大全| 亚洲色欲或者高潮影院| 狠狠色狠狠色综合日日不卡| 伊人色综合网一区二区三区| 福利一区二区在线| 免费啪啪社区免费啪啪手机版| 粗大黑硬长爽猛欧美视频| 免费特级黄色片| 看一级毛片**直播在线|