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LED开关电源设计参数分析
2017-1-4 点击:457

1、LEDKAIGUANDIANYUANGONGLVMIDU

腾讯欢乐捕鱼   TIGAOKAIGUANDIANYUANDEGONGLVMIDU,SHIZHIXIAOXINGHUA、QINGLIANGHUA,SHIRENMENBUDUANZHUIQIUDEMUBIAO.ZHEIDUIBIANXIESHIDIANZISHEBEI(RUYIDONGDIANHUA,SHUZIXIANGJIDENG)YOUWEIZHONGYAO.SHIKAIGUANDIANYUANXIAOXINGHUADEJUTIBANFAYOUYIXIAJIZHONG.

  YISHIGAOPINHUA.WEILESHIXIANDIANYUANGAOGONGLVMIDU,BIXUTIGAOPWMBIANHUANQIDEGONGZUOPINLV、CONGERJIANXIAODIANLUZHONGCHUNENGYUANJIANDETIJIZHONGLIANG.

腾讯欢乐捕鱼   ERSHIYINGYONGYADIANBIANYAQI.YINGYONGYADIANBIANYAQIKESHIGAOPINGONGLVBIANHUANQISHIXIANQING、XIAO、BOHEGAOGONGLVMIDU.YADIANBIANYAQILIYONGYADIANTAOCICAILIAOTEYOUDE“DIANYA-ZHENDONG”BIANHUANHE“ZHENDONG-DIANYA”BIANHUANDEXINGZHICHUANSONGNENGLIANG,QIDENGXIAODIANLURUTONGYIGECHUANBINGLIANXIEZHENDIANLU,SHIGONGLVBIANHUANLINGYUDEYANJIUREDIANZHIYI.

  三是采用新型电容器.为了减小电力电子设备的体积和重量,须设法改进电容器的性能,提高能量密度,并研究开发适合于电力电子及电源系统用的新型电容器,要求电容量大、等效串联电阻(ESR)小、体积小等.
腾讯欢乐捕鱼         2、LED开关电源中高频磁性元件的选择

腾讯欢乐捕鱼   LEDKAIGUANDIANYUANXITONGZHONGYINGYONGDALIANGCIYUANJIAN,GAOPINCIYUANJIANDECAILIAO、JIEGOUHEXINGNENGDOUBUTONGYUGONGPINCIYUANJIAN,YOUXUDUOWENTIXUYAOYANJIU.DUIGAOPINCIYUANJIANSUOYONGDECIXINGCAILIAO,YAOQIUQISUNHAOXIAO、SANREXINGNENGHAO、CIXINGNENGYOUYUE.SHIYONGYUZHAOHEJIPINLVDECIXINGCAILIAOWEIRENMENSUOGUANZHU,NAMIJIEJINGRUANCICAILIAOYEYIKAIFAYINGYONG.

  3、LEDKAIGUANDIANYUANZHONGGAOPINHUAYIHOURUANKAIGUANJISHUDEYINGYONG

腾讯欢乐捕鱼   LEDKAIGUANDIANYUANGAOPINHUAYIHOU,WEILETIGAOLEDKAIGUANDIANYUANDEXIAOLV,BIXUKAIFAHEYINGYONGRUANKAIGUANJISHU.TASHIGUOQUJISHINIANGUOJIDIANYUANJIEDEYIGEYANJIUREDIAN.

腾讯欢乐捕鱼   PWM-LEDKAIGUANDIANYUANANYINGKAIGUANMOSHIGONGZUO(KAI/GUANGUOCHENGZHONGDIANYAXIAJIANG/SHANGSHENGHEDIANLIUSHANGSHENG/XIAJIANGBOXINGYOUJIAODIE),YINERKAIGUANSUNHAODA.GAOPINHUASUIKEYISUOXIAOTIJIZHONGLIANG,DANKAIGUANSUNHAOQUEGENGDALE.WEICI,BIXUYANJIUKAIGUANDIANYA/DIANLIUBOXINGBUJIAODIEDEJISHU,JISUOWEILINGDIANYAKAIGUAN(ZVS)/LINGDIANLIUKAIGUAN(ZCS)JISHU,HUOCHENGRUANKAIGUANJISHU,XIAOGONGLVRUAN LED KAIGUANDIANYUANXIAOLVKETIGAODAO80%~85%.SHANGSHIJI70NIANDAIXIEZHENKAIGUANDIANYUANDIANDINGLERUANKAIGUANJISHUDEJICHU.SUIHOUXINDERUANKAIGUANJISHUBUDUANYONGXIAN,RUZHUNXIEZHEN(SHANGSHIJI80NIANDAIZHONG)QUANQIAOYIXIANGZVS-PWM,HENGPINZVS-PWM/ZCS-PWM(SHANGSHIJI80NIANDAIMO)ZVS-PWMYOUYUANQIANWEI;ZVT-PWM/ZCT-PWM(SHANGSHIJI90NIANDAICHU)QUANQIAOYIXIANGZV-ZCS-PWM(SHANGSHIJI90NIANDAIZHONG)DENG.WOGUOYIJIANGZUIXINRUANKAIGUANJISHUYINGYONGYU6kWTONGXINDIANYUANZHONG,XIAOLVDA93%.

腾讯欢乐捕鱼   4、LEDKAIGUANDIANYUANZHONGSHIYONGTONGBUZHENGLIUJISHU

  LEDKAIGUANDIANYUANZHONGSHIYONGTONGBUZHENGLIUJISHU,XIANGDUIYUDIDIANYA、DADIANLIUSHUCHUDERUANKAIGUANBIANHUANQI,KEJINYIBUTIGAOQIXIAOLVDECUOSHISHISHEFAJIANGDIKAIGUANDETONGTAISUNHAO.LIRUTONGBUZHENGLIU (SR) JISHU,JIYIGONGLVMOSGUANFANJIEZUOWEIZHENGLIUYONGKAIGUANERJIGUAN,DAITIXIAOTEJIERJIGUAN(SBD),KEJIANGDIGUANYAJIANG,CONGERTIGAOLEDKAIGUANDIANYUANDIANLUXIAOLV.

 5、LEDKAIGUANDIANYUANZHONGGONGLVYINSHUXIAOZHENG(PFC)BIANHUANQIYINGYONG

  LEDKAIGUANDIANYUANZHONGGONGLVYINSHUXIAOZHENG(PFC)BIANHUANQIYINGYONG.YOUYUAC/DCBIANHUANDIANLUDESHURUDUANYOUZHENGLIUQIJIANHELVBODIANRONG,ZAIZHENGXIANDIANYASHURUSHI,DANXIANGZHENGLIUDIANYUANGONGDIANDEDIANZISHEBEI,DIANWANGCE(JIAOLIUSHURUDUAN)GONGLVYINSHUJINWEI0.6- 0.65.CAIYONGGONGLVYINSHUXIAOZHENG(PFC)BIANHUANQI,WANGCEGONGLVYINSHUKETIGAODAO0.95~0.99,SHURUDIANLIUTHD<10%.JIZHILILEDUIDIANWANGDEXIEBOWURAN,YOUTIGAOLEDIANYUANDEZHENGTIXIAOLV.ZHEIYIJISHUCHENGWEIYOUYUANGONGLVYINSHUXIAOZHENG(APFC).

腾讯欢乐捕鱼  6、LEDKAIGUANDIANYUANDEQUANSHUZIHUAKONGZHI

腾讯欢乐捕鱼   LEDKAIGUANDIANYUANDEKONGZHIYIJINGYOUMONIKONGZHI,MOSHUHUNHEKONGZHI,JINRUDAOQUANSHUZIKONGZHIJIEDUAN.QUANSHUZIKONGZHISHIFAZHANQUSHI,YIJINGZAIXUDUOGONGLVBIANHUANSHEBEIZHONGDEDAOYINGYONG.

腾讯欢乐捕鱼   QUANSHUZIKONGZHIDEYOUDIANSHISHUZIXINHAOYUHUNHEMOSHUXINHAOXIANGBIKEYIBIAODINGGENGXIAODELIANG,XINPIANJIAGEYEGENGDILIAN;DUIDIANLIUJIANCEWUCHAKEYIJINXINGJINGQUEDESHUZIXIAOZHENG,DIANYAJIANCEYEGENGJINGQUE;KEYISHIXIANKUAISU,LINGHUODEKONGZHISHEJI.

腾讯欢乐捕鱼  7、LEDKAIGUANDIANYUANDIANCIJIANRONGXING

  LEDKAIGUANDIANYUANDIANCIJIANRONGXING:GAOPINLEDKAIGUANDIANYUANDEDIANCIJIANRONG(EMC)WENTIYOUQITESHUXING.GONGLVBANDAOTIQIJIANZAIKAIGUANGUOCHENGZHONGSUOCHANSHENGDEdi/dtHEdv/dt,JIANGYINQIQIANGDADECHUANDAODIANCIGANRAOHEXIEBOGANRAO,YIJIQIANGDIANCICHANG(TONGCHANGSHIJINCHANG)FUSHE.BUDANYANZHONGWURANZHOUWEIDIANCIHUANJING,DUIFUJINDEDIANQISHEBEIZAOCHENGDIANCIGANRAO,HAIKENENGWEIJIFUJINCAOZUORENYUANDEANQUAN.TONGSHI,DIANLIDIANZIDIANLU(RUKAIGUANBIANHUANQI)NEIBUDEKONGZHIDIANLUYEBIXUNENGCHENGSHOUKAIGUANDONGZUOCHANSHENGDEEMIJIYINGYONGXIANCHANGDIANCIZAOSHENGDEGANRAO.SHANGSHUTESHUXING,ZAIJIASHANGEMICELIANGSHANGDEJUTIKUNNAN,ZAIDIANLIDIANZIDEDIANCIJIANRONGLINGYULI,CUNZAIZHEXUDUOJIAOCHAXUEKEDEQIANYANKETIYOUDAIRENMENYANJIU.

腾讯欢乐捕鱼  8、LEDKAIGUANDIANYUANSHEJIHECESHIJISHU

腾讯欢乐捕鱼   LEDKAIGUANDIANYUANXITONGDECAD,BAOKUOZHUDIANLUHEKONGZHIDIANLUSHEJI、QIJIANXUANZE、CANSHUZUIYOUHUA、CISHEJI、RESHEJI、EMISHEJIHEYINZHIDIANLUBANSHEJI、KEKAOXINGYUGU、JISUANJIFUZHUZONGHEHEYOUHUASHEJIDENG.YONGJIYUFANGZHENDEZHUANJIAXITONGJINXINGLEDKAIGUANDIANYUANXITONGDECAD。