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为什么还在使用继电器驱动汽车电机?

2016-11-28 16:20:04     来源:微电机世界网     作者:德州仪器供稿     w88优德注册

SUIZHEQICHEDIANQIXITONGZHONGGENGXIAOGENGZHINENGDEJICHENGDIANLU(IC)DECHUXIAN,SHISHIHOUKAISHIZHENGSHIFANGJIANLIDE“DAXIANG”LE:WEISHENMEWOMENRENGRANSHIYONGJIDIANQIKONGZHIQICHETIANCHUANG、CHUANGBOLISHENGJIANGZHUANGZHI、DIANDONGSUO、HOUXINGLIXIANGGAITISHENGZHUANGZHI、JIYIZUOYI、YASUOJIYIJICHESHANGDEGEZHONGBENG?SUIRAN,JIDIANQIJIAGEQINMINQIEYIYUSHEJI,DANSHIYOUYUTAMENDESHIYONGSHOUMINGYOUXIANQIETIJIJIAODA,YINCITAMENDEGONGNENGDUIYUXIANDAIDIANJIYINGYONGLAISHUOSHAOXIANBENZHONG。DUIYUYIGEANJING、XIAOXINGERANQUANDEJIEJUEFANGANERYAN,GUTAIICSHIQICHEYINGYONGDEZUIJIAXUANZE。

解决方案尺寸

RANGWOMENBIJIAOLIANGZHONGJIEJUEFANGAN,RUTU1SUOSHIDESHIJUYOUXIANGTONGDEDIANYAHEDIANLIUEDINGZHIDEDIANXINGJIDIANQIJIEJUEFANGANJIDENGXIAOGUTAIJIEJUEFANGAN。

w88优德注册TU1:JIDIANQIJIEJUEFANGANYUGUTAIJIEJUEFANGAN

w88优德注册JINZHENDUIJIEJUEFANGANCHICUN,GUTAI8mm×8mmSIFANGBIANPINGWUYINXIAN(QFN)HELIANGGESHUANGFENGZHUANGNTONGDAOJINSHUYANGHUAWUBANDAOTICHANGXIAOYING(MOSFET)YUEZHANJIDIANQIJIEJUEFANGANDIANLUBANMIANJIDESANFENZHIYI。ZAIKANzZHOU,ZHENGGEGUTAIJIEJUEFANGANYUE0.9HAOMI,HUO0.035YINGCUNGAO。RUGUOYAOGOUJIANGANGHAOSHIHEANZHUANGZAIDIANJIWAIQIAOBEIMIANDEDIANJIQUDONGQIYINSHUADIANLUBAN(PCB),TIDEGUTAIJIEJUEFANGANZEFEICHANGSHIHECIYINGYONG。

w88优德注册CHULECHICUNWAI,GUTAIZHAJIQUDONGQIHAIJICHENGLEYIZHENGTAOBAOHUGONGNENG,FOUZEBIXUZAIJIDIANQIJIEJUEFANGANZHONGLISANGOUJIAN。ZHEIXIEGONGNENGBAOKUO:

电机电流测量

DUIYURENHELEIXINGDEDIANLIUDIAOJIE,JIDIANQIHEGUTAIXITONGDOUXUYAOYIGEFENLIUDIANZU。JIDIANQIJIEJUEFANGANXUYAODANDUDEFENLIFANGDAQIDIANLULAIZENGJIAZAIJIANCEDIANZULIANGDUANCELIANGDEDIANYA。RANHOUJIANGZENGJIADEDIANYAFASONGDAOWEIKONGZHIQI(MCU)MOSHUZHUANHUANQI(ADC),YIBIANMCUZHONGDESHUZILUOJIKEYIJUEDINGHESHIGUANBIDIANJIHUOXIANZHIDIANLIU。DANSHIGUTAIDIANJIQUDONGQITONGCHANGJICHENGLEDICEFENLIUFANGDAQI,YINCININXUYAODEWEIYIDEFENLIYUANJIANSHIDANGEDIANLIUJIANCEDIANZU。TU2SUOSHIWEIJICHENGDIANJIQUDONGICHEFENLIDIANLIUCELIANGDIANLUTUOPUJIEGOUZHIJIANDECHAYI。

TU2:LISANYUGUTAIDIANLIUCELIANG

DEDIANJIQUDONGQISHIDIANLIUDIAOJIEGENGJINYIBU,BINGSHIYONGLIANJIEDAOJICHENGDIANLIUJIANCEFANGDAQISHUCHUDENEIBUBIJIAOQILAIZHENGHEZHUZHOUQIDIANLIUZHANBOFANGFA。SUOXUYAODESHIYIGEWAIBUCANKAODIANYA,QIJIANJIANGCHULIDIANLIUXIANZHI,SHIFANGYUANLAIYONGYUMCUHUOLISANJIANLIDEZIYUAN。SUIRANFANGDAQIDESHUCHURENGRANYUFENGZHUANGGUANJIAOXIANGGUAN,DANRUGUONINZHIXUYAOYIDINGCHENGDUDEDIANLIUDIAOJIE,QINGKAOLVYIGEWANQUANJICHENGDEJIEJUEFANGAN,RUDRV8702-Q1HUODRV8703-Q1。

连接到MCU

w88优德注册DANGJIANGJIDIANQIHEGUTAIJIEJUEFANGANLIANJIEDAOMCUSHI,GUTAIICTONGCHANGKEYISHIXIANMCUTONGYONGSHURUSHUCHUKOU(GPIO)HEMOSHUZHUANHUANQI(ADC)GUANJIAOZHIJIANDEZHILIAN。ZHEIXIEICTONGCHANGJUYOUZUGOUDELINGHUOXING,KEYU1.8、3.3HUO5VLUOJIDIANPINGLIANJIE,QIDAIYOUCANZHAOJIEDIDEGAOZUKANGXIALADIANZU。WEILESHIJIDIANQIJIEJUEFANGANSHIXIANLEISIDESHURUKONGZHI,MOUZHONGDIANLIUZENGYIXUYAOKONGZHIJIDIANQINEIBUDELUOXIANGUANXIANQUAN。TU3SUOSHIWEIJIANGJIDIANQIHEGUTAIQUDONGQIYUMCULIANJIESHI,ZAIDIANLUTUOPUJIEGOUZHONGDECHAYI。

TU3:LIANJIEZHIMCU

w88优德注册TU3ZHONGDEJIDIANQIJIEJUEFANGANGAISHULEXUYAONPNXINGSHUANGJIXINGJIEJINGTI(BJT)DEDALINDUNDUI、LIANGGEDIANZUHEYIGEBAOHUERJIGUAN,YIJIANGJIDIANQIXIANQUANZHIJIEYUYIGEMCU GPIOGUANJIAOLIANJIE。WEILECHUANGJIANHQIAOBINGQUDONGSHUANGXIANGDIANJI,JIANGXUYAOLIANGGESHUANGFENGZHUANGDANDAOSHUANGZHI[SPDT]JIDIANQI,ZHEIYIWEIZHEXUYAOSHANGSHUZHONGLIANGBEIDEDIANLUYUANJIANLAIDULIQUDONGLIANGGEJIDIANQIXIANQUAN。SHIYONGTIDEYIKUANDIANJIQUDONGQI,KEYIYICHUSUOYOUZHEIXIEFENLIYUANJIAN,CONGERCHUANGJIANYIGEGENGXIAO、GENGQINGJIEDEPCBJIEJUEFANGAN。

电机速度曲线

w88优德注册DAIJIDIANQIDEDIANJISUDUQUXIANXIAOLVJIDI。SHEJIRENYUANSHIYONGYUDIANJICHUANLIANFANGZHIDEBUTONGCHICUNDEDIANZUQIHUOJUYOUBUTONGSUDUDEDUORAOZUDIANJI,KEWEIDIANDONGCHUANG、SHENGJIANGMEN、TIANCHUANG、HUADONGMENHUODAIJIDIANQIDEBENGSHIXIANDUOSUDUKONGZHIFANGAN。RUGUONINXIANGXUANZEBUTONGDESUDU,ZHEILIANGZHONGJIEJUEFANGANDOUXUYAOSHIYONGGENGDUODEJIDIANQI,ERZHEIYIWEIZHEJIANGHUIZENGJIADIANLUBANKONGJIANHEFENLIYUANJIAN。

SHIYONGGUTAIJIEJUEFANGAN,NINZHIXUYAOWEITIDEDIANJIQUDONGQITIGONGLAIZIMCUDELIANGGEMAICHONGKUANDUDIAOZHI(PWM)XINHAOLAIKONGZHIDIANJIZHUANSU。ZAIDRV8702-Q1HEDRV8703-Q1SHANG,TITIGONGLEPH/ENMOSHI,QIZHONGZHIYOUYIGEPWMXINHAOSHIJIADAOSHINENGGUANJIAO,ERJIANDANDELUOJIGAOHUODIXIANGWEIGUANJIAOKONGZHIDIANJIDEFANGXIANG。LUOJIDIANPINGPWMXINHAOZHIJIEZHUANHUANWEIJUYOUZHENGQUEDIANYADEMOSFETZHAJI,YIWANQUANZENGQIANGGAOCEHUODICEMOSFET。SHIYONGCILEIXINGDEJIEKOU,NINKEYIKUAISUSHEJIDUOJIBENG、HUADONGBOLITIANCHUANGDEDINGZHIYUNDONGGUIJI、RUANGUANBIDIANDONGCHUANG、JINGJIDEBIANSUDANGFENGBOLIGUASHUIQIHUORENHEQITALEIXINGDEJIANYIYUNDONGKONGZHIDIANJIYINGYONG。

相关参考设计

w88优德注册XIAOCHICUNTIANCHUANGDIANJIMOKUAICANKAOSHEJISHIYIKUANYONGYUTIANCHUANGHECHUANGBOLISHENGJIANGZHUANGZHIYINGYONGDEGUTAIDIANJIKONGZHIMOKUAI。GAITICANKAOSHEJISHIYONGJICHENGLEFENLIUFANGDAQIYIJILIANGGESHUANGFENGZHUANGQICHEJIFENGZHUANGMOSFETDEDRV8703-Q1ZHAJIQUDONGQI,YICHUANGJIANYUDIANXINGDEJIDIANQIJIEJUEFANGANXIANGBI,JIXIAODEGONGLVJIBUJU。GAISHEJIHAIBAOKUOLIANGGETIDEDRV5013-Q1SHUZISUOCUNHUOERXIAOYINGCHUANGANQI,YONGYUDUIDIANJIWEIZHIJINXINGBIANMA。

SHIYONGTIDEYIKUANGUTAIDIANJIQUDONGQISHEJIDIANJIKONGZHIXITONGJIANGYOUZHUYUJIANXIAOPCBJIEJUEFANGANDECHICUN,CONGERYUNXUCONGTONGYIMOKUAIKONGZHIYUELAIYUEDUODEDIANJI。PINGJIETIDEDIANJIQUDONGQIDEGAOJICHENGHEJIANYIKONGZHIFANGAN,SHEJIRENYUANKEKUAISU、QINGSONGDIZHONGXINSHEJIDANGQIANZHENGZAISHIYONGJIDIANQIDEDADUOSHUXIANDAIDAISHUAZHILIUDIANJIKONGZHIQIDIANLU。

其他信息

· YOUGUANGENGDUOGUTAIDIANJIQUDONGQICANKAOSHEJI,QINGCANYUETICANKAOSHEJIKUZHONGDEXIANGGUANCANKAOSHEJI:

w88优德注册o QICHE12V 200W(20A)BLDCDIANJIQUDONGCANKAOSHEJI。

o QICHE2ZHOUDIANDONGZUOYIDAISHUAZHILIUDIANJIQUDONGCANKAOSHEJI。

o QICHEHVACDUOFENGMENZHIXINGQI/ZUNIQIZHILIUDIANJIQUDONGQICANKAOSHEJI。

· YOUGUANQICHEDIANJIQUDONGQICHANPINDEGENGDUOXINXI,QINGCANJIANDRV8703D-Q1、DRV8703-Q1HEDRV8305-Q1DECHANPINYEMIAN。

w88优德注册· YUEDUGENGDUOYOUGUANQICHEHVACFENGMENZHIXINGQIDEBOWEN。

声明:转载此文是出于传递更多信息之目的。若有来源标注错误或侵犯了您的合法权益,请与我

们联系,我们将及时更正、删除,谢谢。

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