jinguangelihenpubian，danshiyouxiaodishixiangelirengrancunzaiwenti
，youqishidangwomenxianggenggaodexitongjichengdufazhan。tadezhuyaomudeshianquan，dantayekeyitongguozuidahuagongmoshunbiankangraodu(CMTI)來lai提ti高gao性xing能neng，這zhe是shi在zai汽qi車che行xing業ye中zhong使shi用yong隔ge離li的de主zhu要yao原yuan因yin之zhi一yi。另ling一yi個ge原yuan因yin，尤you其qi是shi在zai電dian動dong汽qi車che中zhong，是shi支zhi持chi電dian壓ya域yu之zhi間jian的de電dian源yuan轉zhuan換huan和he電dian平ping轉zhuan換huan。

 

電源轉換係統通常使用功率MOSFET或IGBT。這些器件需要使用低壓信號由門極驅動器來開關。為(wei)保(bao)持(chi)不(bu)同(tong)的(de)電(dian)壓(ya)域(yu)獨(du)立(li)但(dan)相(xiang)互(hu)連(lian)接(jie)，需(xu)要(yao)隔(ge)離(li)，這(zhe)就(jiu)是(shi)個(ge)典(dian)型(xing)的(de)示(shi)例(li)。隔(ge)離(li)通(tong)常(chang)使(shi)用(yong)光(guang)耦(ou)合(he)器(qi)來(lai)實(shi)現(xian)，這(zhe)至(zhi)少(shao)需(xu)要(yao)兩(liang)個(ge)分(fen)立(li)器(qi)件(jian)。發(fa)射(she)器(qi)是(shi)一(yi)個(ge)LED，接收器包括一個光電二極管。

 

盡管光耦合器可易於實現極高的5 kVrmshuogenggaodegeli，dantamentijidaqieyilaohua。zaimeiyouguangdeqingkuangxiashixiankuayuegelizhadetongxin

，tongshirengbaoliusuoxudegelishuiping，zheshikenengde。guangouheqizaixuduoyingyongzhongkenengshilixiangdexuanze
，dantidaijishudequshiyuelaiyuemingxian，jichengdegeliqijiantigonggengduobianli。yigeshilishiansenmeibandaotideNCD57001。它使用通過無芯變壓器的磁耦合在微型電感器之間創建數據路徑，從而提供5 kVrms的電氣隔離和至少100 kV / us的CMTI。

 

圖1：安森美半導體的先進的NCD57001門極驅動器IC

 

NCD57001delingyigexianzhutedianshitadeshuchuji，zhuanweijiejueyigechangjianwentierkaifa。tajuyouyigeneibuhuanchongji，weikefumilepingtaiersheji。zheshichuandiquxianquyu
，zhengminglexuduomenjiqudongqidexiaowang。zaiciqijian，jishengmiledianrongshengxiao，congerjiangdilekai/關轉換速度。

 

 

為了補償米勒電容的遲滯效應，輸出緩衝器的作用是通過米勒平台(Miller Plateau)來lai增zeng加jia驅qu動dong電dian流liu。柵zha極ji端duan子zi上shang的de米mi勒le電dian容rong是shi開kai關guan損sun耗hao的de主zhu要yao原yuan因yin。當dang門men極ji電dian壓ya開kai始shi上shang升sheng且qie驅qu動dong器qi輸shu出chu電dian壓ya與yu門men極ji電dian壓ya之zhi差cha減jian小xiao時shi，提ti供gong大da電dian流liu輸shu出chu驅qu動dong，IGBT或MOSFET可以更快地通過米勒平台。這是利用輸出級的升壓效應來減少為寄生/米勒門極電容充電所需的時間來實現的。

 

NCD57001dewuxinbianyaqijishu
，zaixinpianjimenjiqudongqizhongtigongleyouxiaodegeli。zhexiequanjichengdegelishimenjiqudongqijuyouzhenzhengdegongchengyoushi
，bingqiezaixuyaoyixiaochicunshixiangaogelidudeyingyongzhongshiguanggeliqudongqidejuejiatidaipin。qiweikefumilepingtaiershejideshuchushengyajihaitigaolekaiguanxiaolv。suizheyuelaiyueduodeyingyongcaiyonggaozhiliudianya，duigaoxiaoheanquangelidexuqiuyezaizengchang。yinci，chuangxinfanganruNCD57001可真正為您的下一個功率開關應用帶來積極的改變。

 

 

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