新疆喜乐彩走势图

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关于线性稳压器的基本知识全面解析
2017-4-8 9:57:30      点击:

      长期以来,线性稳压器一直得到业界的广泛采用。在开关模式电源于上世纪60年代后成为主流之前,线性稳压器曾经是电源行业的基础。即使在今天,线性稳压器仍然在众多的应用中广为使用。下面我们来就针对线性稳压器的基本知识作一一相关介绍。

  一、线性稳压器的基本概念

  XIANXINGWENYAQI(Linear Regulator)SHIYONGZAIQIXIANXINGQUYUNEIYUNXINGDEJINGTIGUANHUO FET,CONGYINGYONGDESHURUDIANYAZHONGJIANQUCHAOEDEDIANYA,CHANSHENGJINGGUODIAOJIEDESHUCHUDIANYA。QICHANPINJUNCAIYONGXIAOXINGFENGZHUANG,JUYOUCHUSEDEXINGNENG,BINGQIETIGONGREGUOZAIBAOHU、ANQUANXIANLIUDENGZENGZHITEXING,GUANDUANMOSHIHAINENGDAFUJIANGDIGONGHAO。

  二、线性稳压器的工作原理

新疆喜乐彩走势图   WOMENCONGYIGEJIANDANDELIZIKAISHI。ZAIQIANRUSHIXITONGZHONG,KECONGQIANDUANDIANYUANTIGONGYIGE12VZONGXIANDIANYAGUI。ZAIXITONGBANSHANG,XUYAOYIGE3.3VDIANYAWEIYIGEYUNSUANFANGDAQI(YUNFANG)GONGDIAN。CHANSHENG3.3VDIANYAZUIJIANDANDEFANGFASHISHIYONGYIGECONG12VZONGXIANYINCHUDEDIANZUFENYAQI,RUTU1SUOSHI。ZHEIZHONGZUOFAXIAOGUOHAOMA?HUIDACHANGCHANGSHI“FOU”。ZAIBUTONGDEGONGZUOTIAOJIANXIA,YUNFANGDEVCCYINJIAODIANLIUKENENGHUIFASHENGBIANHUA。JIARUCAIYONGYIGEGUDINGDEDIANZUFENYAQI,ZEIC VCCDIANYAJIANGSUIFUZAIERGAIBIAN。CIWAI,12VZONGXIANSHURUHAIYOUKENENGWEIDEDAOLIANGHAODEDIAOJIE。ZAITONGYIGEXITONGZHONG,YEXUYOUHENDUOQITADEFUZAIGONGXIANG12VDIANYAGUI。YOUYUZONGXIANZUKANGDEYUANYIN,12VZONGXIANDIANYAHUISUIZHEZONGXIANFUZAIQINGKUANGDEBIANHUAERGAIBIAN。YINCI,DIANZUFENYAQIBUNENGWEIYUNFANGTIGONGYIGEYONGYUQUEBAOQIZHENGQUECAOZUODE3.3VWENDINGDIANYA。YUSHI,XUYAOYIGEZHUANYONGDEDIANYADIAOJIEHUANLU。RUTU2SUOSHI,FANKUIHUANLUBIXUDIAOZHENGDINGDUANDIANZUQIR1DEZUZHIYIDONGTAIDIDIAOJIEVCCSHANGDE3.3V.

  

新疆喜乐彩走势图   TU1 DIANZUFENYAQICAIYONG12VZONGXIANSHURUCHANSHENG3.3VDC

  

新疆喜乐彩走势图   TU2 FANKUIHUANLUDIAOZHENGCHUANLIANDIANZUQIR1DEZUZHIYIDIAOJIE3.3V

  CILEIKEBIANDIANZUQIKELIYONGYIGEXIANXINGWENYAQILAISHIXIAN,RUTU3SUOSHI。XIANXINGWENYAQISHIYIGESHUANGJIXINGHUOCHANGXIAOYINGGONGLVJINGTIGUAN(FET)ZAIQIXIANXINGMOSHIZHONGYUNZUO。ZHEIYANG,JINGTIGUANQIDEZUOYONGJIUSHIYIGEYUSHUCHUFUZAIXIANGCHUANLIANDEKEBIANDIANZUQI。CONGGAINIANSHANGSHUO,RUXUGOUJIANFANKUIHUANLU,KEYOUYIGEWUCHAFANGDAQILIYONGYIGECAIYANGDIANZUQIWANGLUO(RAHERB)LAIJIANCEDCSHUCHUDIANYA,RANHOUJIANGFANKUIDIANYAVFBYUYIGEJIZHUNDIANYAVREFJINXINGBIJIAO。WUCHAFANGDAQISHUCHUDIANYATONGGUOYIGEDIANLIUFANGDAQIQUDONGCHUANLIANGONGLVJINGTIGUANDEJIJI。DANGSHURUVBUSDIANYAXIAJIANGHUOFUZAIDIANLIUZENGDASHI,VCCSHUCHUDIANYAXIAJIANG。FANKUIDIANYAVFBYEJIANGXIAJIANG。YINCI,FANKUIWUCHAFANGDAQIHEDIANLIUFANGDAQICHANSHENGGENGDUODEDIANLIUBINGSHURUJINGTIGUANQ1DEJIJI。ZHEIJIANGJIANXIAODIANYAJIANG VCE,YINERSHIVCCSHUCHUDIANYAHUIFU,ZHEIYANGYILAIVFB=VREF.LINGYIFANGMIAN,RUGUOVCCSHUCHUDIANYASHANGSHENG,ZEFUFANKUIDIANLUCAIQUXIANGSIDEFANGSHIZENGJIAVCEYIQUEBAO3.3V SHUCHUDEZHUNQUEDIAOJIE。ZONGZHI,VODERENHEBIANHUADOUBEIXIANXINGWENYAQIJINGTIGUANDEVCEDIANYASUOXIAOJIAN。SUOYI,SHUCHUDIANYAVCCSHIZHONGHENGDINGBINGCHUYULIANGHAODIAOJIEZHUANGTAI。

  

新疆喜乐彩走势图   TU3 XIANXINGWENYAQIKESHIXIANYIGEKEBIANDIANZUQIYIDIAOJIESHUCHUDIANYA

  三、线性稳压器的特点

  SUOWEIDEKANGDUANLUNENGLIYAOQIU,SHIZHIZAIXIANGGUANCAILIAODEDUANLUTIAOJIANXIA,WENYAQIBUSUNHUAI。WENYAQIDEKANGDUANLUNENGLIBAOKUOCHENGSHOUDUANLUDENAIRENENGLIHECHENGSHOUDUANLUDEDONGWENDINGNENGLILIANGGEFANGMIAN。

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  JISHIMEIYOUSHUCHUDIANRONGYEXIANGDANGWENDING,TABIJIAOSHIHEDIANYACHAJIAOGAODESHEBEISHIYONG,GUIFANNPNWENYAQIDEYOUDIANSHIJUYOUYUEDENGYUPNPJINGTIGUANJIJIDIANLIUDEWENDINGJIEDIDIANLIU。DANJIAOGAODEYACHASHIDEZHEIZHONGWENYAQIBUSHIHEXUDUOQIANRUSHI SHEBEISHIYONG。

  NPNPANGLUJINGTIGUANWENYAQISHIYIZHONGBUCUODEXUANZE,DUIYUQIANRUSHIYINGYONGERYAN,YINWEITAYACHAXIAO,RONGYISHIYONG。BUGUOZHEIZHONGWENYAQIRENGBUSHIHEJUYOUHENDIYACHAYAOQIUDEDIANCHIGONGDIANSHEBEISHIYONG,YINWEITAYACHABUGOUDI。GAOZENGYINPNPANGLUGUANKESHIJIEDIDIANLIUWENDINGZAIJIGEHAOAN,ERQIETAGONGGONGFASHEJIJIEGOUJUYOUHENDIDESHUCHUZUKANG。

  QIZHONGDEPANGLUYUANJIANJIUSHIPNPJINGTIGUAN。SHURUSHUCHUYACHAYIBANZAI0.30.7VZHIJIAN。YINWEIYACHADI,PNPPANGLUJINGTIGUANSHIYIZHONGDIYACHAWENYAQI。YINCIZHEIZHONGPNPPANGLUJINGTIGUANWENYAQIFEICHANGSHIHEDIANCHIGONGDIANDEQIANRUSHISHEBEISHIYONG。BUGUOTADAJIEDIDIANLIUHUISUODUANDIANCHIDESHOULINGWAI,PNPJINGTIGUANZENGYIJIAODI,HUIXINGCHENGSHUHAOANDEBUWENDINGJIEDIDIANLIU。YINWEICAIYONGGONGGONGFASHEJIJIEGOU,YINCITASHUCHUZUKANGBIJIAOGAO,ZHEIYIWEIZHEXUYAOWAIJIETEDINGFANWEIRONGLIANGHEDENGXIAOCHUANLIANDIANZU(ESRDIANRONGCAIGANGOUWENDINGGONGZUO。

  四、线性稳压器的优劣势分析

新疆喜乐彩走势图   XIANXINGWENYAQISHIYONGZAIQIXIANXINGQUYUNEIYUNXINGDEJINGTIGUANHUOFET,CONGYINGYONGDESHURUDIANYAZHONGJIANQUCHAOEDEDIANYA,CHANSHENGJINGGUODIAOJIEDESHUCHUDIANYA。QICHANPINJUNCAIYONGXIAOXINGFENGZHUANG,JUYOUCHUSEDEXINGNENG,BINGQIETIGONGREGUOZAIBAOHU、ANQUANXIANLIUDENGZENGZHITEXING,GUANDUANMOSHIHAINENGDAFUJIANGDIGONGHAO。

  ZHANGQIYILAI,XIANXINGWENYAQIYIZHIDEDAOYEJIEDEGUANGFANCAIYONG。ZAIKAIGUANMOSHIDIANYUANYUSHANGSHIJI60NIANDAIHOUCHENGWEIZHULIUZHIQIAN,XIANXINGWENYAQICENGJINGSHIDIANYUANXINGYEDEJICHU。JISHIZAIJINTIAN,XIANXINGWENYAQIRENGRANZAIZHONGDUODEYINGYONGZHONGGUANGWEISHIYONG。

  1.线性稳压器的优势分析

新疆喜乐彩走势图   CHULEJIANDANYIYONGZHIWAI,XIANXINGWENYAQIHAIYONGYOUQITADEXINGNENGYOUSHI。DIANYUANGUANLIGONGYINGSHANGKAIFALEXUDUOJICHENGXINGXIANXINGWENYAQI。DIANXINGDEJICHENGXIANXINGWENYAQIZHIXUYAOVIN、VOUT、 FBHERENXUANDEGNDYINJIAO。TU4SHICHULEYIKUANDIANXINGDE3YINJIAOXIANXINGWENYAQILT1083,TASHILINGLIERTEGONGSIZAI20DUONIANQIANKAIFADE。GAIQIJIANJINXUYIGESHURUDIANRONGQI、SHUCHUDIANRONGQIHELIANGGEFANKUIDIANZUQIYISHEDINGSHUCHUDIANYA。JIHUSUOYOUDEDIANQIGONGCHENGSHIDOUKEYIYUNYONGZHEIXIEJIANDANDEXIANXINGWENYAQILAISHEJIDIANYUAN。

  

  TU4 JICHENGXINGXIANXINGWENYAQISHILI:ZHIYOU3GEYINJIAODE7.5AXIANXINGWENYAQI

  2. 线性稳压器的缺点分析

  XIANXINGWENYAQIHUIXIAOHAODALIANGDEGONGLV。CAIYONGXIANXINGWENYAQIDEYIGEZHUYAOQUEDIANSHIQIYUNXINGYUXIANXINGMOSHIZHICHUANLIANJINGTIGUANQ1HUIYOUGUODAGONGLVHAOSAN。RUQIANWENSUOSHU,XIANXINGWENYAQICONGGAINIANSHANGJIANGSHIYIGEKEBIANDIANZUQI。YOUYUSUOYOUDEFUZAIDIANLIUDOUBIXUJINGGUOCHUANLIANDIANZUQI,GUQIGONGLVHAOSANWEIPLOSS=(VIN-VO)IO.ZAIGAICHANGHEZHONG,XIANXINGWENYAQIDEXIAOLVKEYOUXIASHIKUAISUGUSUAN:

  

  YUSHIZAITU1SUOSHIDELIZIZHONG,DANGSHURUWEI12VQIESHUCHUWEI3.3VSHI,XIANXINGWENYAQIDEXIAOLVJINWEI27.5%.ZAICICHANGHEZHONG,82.5%DESHURUGONGLVWANQUANLANGFEIDIAOLE,BINGZAIWENYAQIZHONGCHANSHENGLERELIANG。ZHEIYIWEIZHEJINGTIGUANBIXUJUBEIZAIZUIHUAIQINGKUANGXIA(ZUIDAVINHEMANFUZAI)CHULIQIGONGLV/REHAOSANDERENENGLI。YINCI,XIANXINGWENYAQIJIQISANREQIDECHICUNKENENGHENDA,TEBIESHIZAIVOYUANYUANDIYUVINDESHIHOU。RUTU5SUOSHI,XIANXINGWENYAQIDEZUIDAXIAOLVYUVO/VINZHIBICHENGBILI。

  

新疆喜乐彩走势图   TU5:XIANXINGWENYAQIDEZUIDAXIAOLVYUVO/VINZHIBIDEGUANXI。

  LINGYIFANGMIAN,XIANXINGWENYAQIKEYIZAIVOJIEJINVINDEQINGKUANGXIAJUYOUFEICHANGGAODEXIAOLV,RANER,XIANXINGWENYAQI(LR)CUNZAILINGYIGEJUXIANXING,JIVINHEVOZHIJIANDEZUIXIAODIANYACHA。LRZHONGDEJINGTIGUANBIXUZAIQIXIANXINGMOSHIZHONGYUNZUO。YUSHI,QIZAISHUANGJIXINGJINGTIGUANDEJIDIANJIZHIFASHEJILIANGDUANHUOFETDELOUJIZHIYUANJILIANGDUANXUYAOYIGEQUEDINGDEZUIXIAODIANYAJIANG。DANGVOGUOYUJIEJINVINSHI,LRYEXUBUZAINENGGOUDIAOJIESHUCHUDIANYA。NEIXIENENGGOUZAIDIYULIANG(VIN-VO)TIAOJIANXIAGONGZUODEXIANXINGWENYAQIBEICHENGWEIDIYACHAWENYAQI(LDO)。

新疆喜乐彩走势图   LINGWAI,HAIYOUYIGEMINGXIANZHICHUJIUSHIXIANXINGWENYAQIHUOLDOZHINENGTIGONGJIANGYADC/DCZHUANHUAN。ZAINEIXIEYAOQIUVODIANYAGAOYUVINDIANYA,HUOZHEXUYAOCONGYIGEZHENGVINDIANYACHANSHENGFUVODIANYADEYINGYONGZHONG,XIANXINGWENYAQIXIANRANSHIBUQIZUOYONG。

  五、线性稳压器的应用

  线性稳压器的主要应用体现在以下几个方面:

新疆喜乐彩走势图   1. JIANDAN/DICHENGBENDEJIEJUEFANGAN。XIANXINGWENYAQIHELDOJIANDANYIYONG,TEBIESHIHEYUNEIXIEJUYOUDISHUCHUDIANLIU、REYINGLIBUHENGUANJIANDEDIGONGLVYINGYONG。WUXUWAIBUGONGLVDIANGANQI。

  2. DIZAOSHENG/DIWENBOYINGYONG。DUIYUNEIXIEDUIZAOSHENGMINGANDEYINGYONG(LIRU:TONGXINHEWUXIANDIANSHEBEI)ERYAN,ZUIDAXIANDUDIYIZHIDIANYUANZAOSHENGSHIFEICHANGGUANJIANDE。XIANXINGWENYAQIJUYOUFEICHANGDIDESHUCHUDIANYAWENBO(YINWEIMEIYOUPINFANJIETONGHEGUANDUANDEZUJIAN),ERQIEXIANXINGWENYAQIHAIKEYIYONGYOUFEICHANGGAODEDAIKUAN。SUOYI,JIHUBUCUNZAIEMIWENTI。YOUXIETESHUDELDO(BIRU:LINGLIERTEDE LT1761 LDOXILIE)ZAISHUCHUDUANDEZAOSHENGDIANYADIZHI20μVRMS.ZHEIMEDIDEZAOSHENGSHUIPINGSMPSJIHUSHIBUKENENGSHIXIANDE。JISHICAIYONGESRFEICHANGDIDEDIANRONGQI,SMPSDESHUCHUWENBOWANGWANGYEJIANGDADAOmVJI。

  3. KUAISUSHUNTAIYINGYONG。XIANXINGWENYAQIFANKUIHUANLUYIBANDOUSHINEIZHIDE,YINCIWUXUWAIBUBUCHANG。XIANGBIYUSMPS,XIANXINGWENYAQITONGCHANGJUYOUJIAOKUANDEKONGZHIHUANLUDAIKUANHEJIAOKUAIDESHUNTAIXIANGYING。

  4. DIYACHAYINGYONG。DUIYUNEIXIESHUCHUDIANYAJIEJINSHURUDIANYADEYINGYONGLAISHUO,LDOKENENGBISMPSGENGYOUXIAO。YOUFEICHANGDIYACHALDO(VLDO),LIRU:LINGLIERTEDELTC1844、 LT3020HELTC3025,ZHEIXIEQIJIANKETIGONG20mVZHI90mVDEYACHADIANYAHEGAODA150mADEDIANLIU。ZUIXIAOSHURUDIANYAKEDIZHI0.9V.YOUYULRZHONGMEIYOUACKAIGUANSUNHAO,YINCILRHUOLDODEQINGFUZAIXIAOLVYUQIMANFUZAIXIAOLVHENXIANGJIN。SMPSCHANGCHANGYINQIACKAIGUANSUNHAODEYUANGUERJUYOUJIAODIDEQINGFUZAIXIAOLV。ZAIQINGFUZAIXIAOLVTONGYANGSHIFENGUANJIANDEDIANCHIGONGDIANXINGYINGYONGZHONG,LDOKETIGONGYIZHONGYOUYUSMPSDEJIEJUEFANGAN。

  六、常用线性稳压器的技术分析

新疆喜乐彩走势图   DIANYACHAHEJIEDIDIANLIUZHIZHUYAOYOUXIANXINGWENYAQIDEPANGLUYUANJIAN(pass element)QUEDING,DIANYACHAHEJIEDIDIANLIUZHIDINGLEHOUJIUKEQUEDINGWENYAQISHIYONGDESHEBEILEIXING。MUQIANSHIYONGDEWUDAZHULIUXIANXINGWENYAQIMEIGEDOUJUYOUBUTONGDEPANGLUYUANJIAN(pass element)HEDUTEXINGNENG,FENBIESHIHEBUTONGDESHEBEISHIYONG。

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