壹款运用于LED驱触动的度过温维养护电路.pdf 4页

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  .趱透羹羹塑隧塑!堕堕!型型型

  壹款运用于LED驱触动的度过温维养护电路术

  崔晶晶,曾以成,夏季俊雅

  (湘潭父亲学微电儿子迷信与工程系,湖南湘潭411105)

  摘要:设计了壹款电压遂温度己顺应变募化,从而使驱触动电流动遂温度己顺应变募化的度过温维养护电路。运用于LED驱触动

  电路,具拥有滞回关断的特点,在恒流动输入中添加以温度己顺应模块,设计骈杂同时比较摆荡。基于0.5¨mCMOS工艺,

  运用Cadence

  路在0-65oC,永恒输入350

  mA,输入变募化范畴小于0.285%;在65—108oC范畴内变募化时,电流动输入己顺应范畴为

  85mA;在温度到臻110℃时,关断记号为高电平,电路关断输入,直到温度下投降到60℃时,电路重行开展。

  博狗扑克:恒流动输入;温度己顺应;滞回关断;LED驱触动;度过温维养护

  中图分类号:TN432 文件标注识码:A

  英文援用程式:Cui ofacircuitwith toLED

  Jingjing,ZengYicheng,XiaJunya.Design overtemperatureprotectionapply driver[J]

  ofElectronic

  Application Technique,2017,43(6):41—44.

  ofacircuitwith toLEDdriver

  Design overtemperatureprotectionapply

  Cui

  Jingjing,ZengYicheng,XiaJunya

  ofMicroelectronicsScienceand 411 105,China)

  (Department Engineering,XiangtanUniversity,Xiangtan

  Abstract:An circuitis whose current withthe of serf—

  overtemperatureprotection designed driving changes voltagetemperature

  of and inthecon·

  hasthecharacteristic thermal—shutdownaddsthe

  changes.Circuit

  adaptive hysteresis temperatureserf—adaptive

  stant-current is andstable on0.5 standardCMOS circuitissimulated

  output.Circuitsimple relatively.BasedIxm technology,the by

  Cadence resultshowsthatthereference with drift,and coefficientis

  Spectre.The voltagehighprecision,lowtemperaturetemperature

  1.6x10’5/℃.TheLED 350mAin0-65℃andits isunder0.285%.Thevariation

  drivercircuitcurrent

  outputs changeable



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