白小姐四肖必选一肖

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英飞凌IGBT厂家 > 英飞凌IGBT模块驱动 > 变压器隔离全桥IGBT驱动电路设计

变压器隔离全桥IGBT驱动电路设计

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SHENZHENYISHENGTONGKEJIYOUXIANGONGSI

时间 : 2018-12-24 10:37 浏览量 : 85

变压器隔离全桥IGBT驱动电路设计


白小姐四肖必选一肖ZAIMAICHONGDIANYUANZHONG,QUDONGDIANLUDEZHILIANGZHIJIEGUANXIDAONIBIANQIDEZHENGCHANGGONGZUO。YIGEHAODEQUDONGDIANLUSHOUXIANYAOBAOZHENGKAIGUANDEANQUAN,QICIYAOSHIKAIGUANDESUNHAOXIAO。ZHEILIANGZHEZHIJIANCUNZAIMAODUN。YINWEIGONGLVKAIGUANYUANJIANYINQIDESUNHAOZHUYAOSHIKAIGUANSUNHAO(KAIGUANSUNHAOHEGUANDUANSUNHAO)。KAIGUANSUNHAOYUQUDONGMAICHONGXINHAOSHANGSHENGYANHEXIAJIANGYANDEDOUDUMIQIEXIANGGUAN。XIAJIANGYANHESHANGSHENGYANYUEDOU,KAIGUANSUNHAOYUEXIAO,JIDIANYAHEDIANLIUZHONGDIEDESHIJIANYUEDUAN。RANER,JIAODOUDESHANGSHENGHEXIAJIANGYANJIANGCHANSHENGGUODADEMAICHONGDIANLIUHEDIANYAJIANFENG,ZHEIWEIXIEDAOKAIGUANDEANQUAN。YINCI,WEILESHIXIANANQUANYOUXIAODEGONGDIAN,YOUBIYAOYIZHIHUOXISHOUZHEIXIEDIANLIUHEDIANYAJIANFENG。BENWENJIESHAOLEYIZHONGBIANYAQIQUDONGDEDAGONGLVIGBTMOKUAIDIANLU。TABUJINJUYOUHENQIANGDEQUDONGNENGLI,ERQIENENGHENHAODIXISHOUDIANYAHEDIANLIUJIANFENG。


1。QUDONGDIANLUFENXIJIQUDONGDIANLUCUNZAIDEWENTI


ZAIZHONGPINMAICHONGSHENTANDIANYUANZHONG,KUAISUJINXINGGUODIANLIUBAOHUFEICHANGZHONGYAO,QUDONGMAICHONGDEWUYANCHICHUANSHUZAISHISHIGUODIANLIUBAOHUZHONGQIZHEZHONGYAOZUOYONG。TONGSHI,WEILEJIANSHAOKAIGUANSUNHAO,YEXUYAOQUDONGMAICHONGFEICHANGDOUQIAODESHANGSHENGHEXIAJIANG。YIXIETESHUCHANGHEYAOQIUJINCOU、JIANJIE,BUXUYAOEWAIDEQUDONGDIANYUANDENG。KAOLVDAOSHANGSHUYAOQIU,CAIYONGBIANYAQIGELIQUANQIAOQUDONGDIANLU,QIDIANLURUTU1SUOSHI。

图1 变压器隔离全桥电路


白小姐四肖必选一肖TU1BIANYAQIGELIQUANQIAODIANLU


ZAITU1ZHONG,MEIGEBEIXUANZEYIGENMOSFETHEYIGEPMOSFET。LIANGGEPWMKONGZHIXINHAO1HUO2SHIGAODIANPING,JI,1SHIGAODIANPING,2SHIDIDIANPING,Q 1HEQ4SHIGUANBIDE,Q 2HEQ3SHIJIETONGDE,Q5SHIJIETONGDE。CISHI,Q2、Q3HET1DECHUJIRAOZUJIANGXINGCHENGYITIAOLUJING。ZAIT1DEYICICESHIJIAMAICHONGDIANYA,XIANGYINGDEERCICEDEDAOQUDONGMAICHONGXINHAO。1、2WEIDIDIANPING,Q1、Q2TONGSHIJIETONG,T1YUANBIANDUANLU,ZECIBIANWUMAICHONGSHUCHU。MOSFETDAOTONGDIANZUXIAO,XIANGYINGKUAI,NENGTIGONGSHUNSHIDAOTONGIGBTSUOXUDEDADIANLIU,BAOZHENGQUDONGMAICHONGJUYOUJIAODOUDESHANGSHENGHEXIAJIANGYAN。YINGZHUYIDESHI,SHENTANMAICHONGDIANYUANDESHUCHUMAICHONGKONGZHIXINPIANCAIYONGUC3825,SHUYUFENGZHIDIANLIUKONGZHIXINPIAN。TAJUYOUKANGCIPIANZHIDENENGLI,BINGQIEBUXUYAOTIANJIAZHILIUDIANRONGQILAIFANGZHICIPIANZHI。XIANGFAN,DANGZENGJIAZHILIUDIANRONGSHI,HUICHUXIANLIANGGEPWMKONGZHIXINHAOBUNENGTONGSHIGUANDUANDEWENTI。ZAIYICHUZHILIUDIANRONGQIZHIHOU,WENTIJIUXIAOSHILE。YINCI,ZAISHIYONGZHILIUDIANRONGSHIYINGZHUYIXINPIANDEKONGZHIFANGSHI,FANGZHIPIANZHI。


SUIRANSHANGSHUQUDONGDIANLUJIEJUELEQUDONGXINHAODEWUYANCHICHUANSHUWENTI,BINGQIEWEIQUDONGMAICHONGTIGONGLEJIAODOUDESHANGSHENGHEXIAJIANGYAN,DANSHIZAIQUDONGMAICHONGDESHANGSHENGHEXIAJIANGYANYEYOUJIAODADEKAIGUANFENGZHI。SHANGSHENGYANGUOCHONGZHUYAOSHIYOUXIELOUYINQIDE。XIANGXITAOLUNLECHAODIAODEJUTIFENXIHEXIAOCHUFANGFA。XIAJIANGYANDEKAIGUANFENGZHUYAOSHIYOULICIDIANGANYINQIDE。TONGCHANG,ZHEILIANGGEFENGZHIDEJIANXIAOSHITONGGUOZENGJIARg(ZHADIANZU)LAISHIXIANDE,DANSHIZENGJIARgJIANGJIANHUANQUDONGMAICHONGDESHANGSHENGYANHEXIAJIANGYANDEDOUQIAODUBINGZENGJIAKAIGUANSUNHAO。



图2一个脉冲周期各波形时序图

TU2.DIYIMAICHONGZHOUQIDEMEIGEBOXINGDESHIJIANXULIETU


JUTIGONGZUOGUOCHENGFENXIRUXIA:TU2WEIMAICHONGZHOUQI。DANGZHENGMAICHONGSHANGSHENGYAN(t0~t3)CHUXIANSHI(ZHEILIZHIKAOLVZHENGMAICHONG),DIANRONGCDENGXIAOYUDUANLU。TONGGUOERJIGUANDHEDIANRONGC,IGBTKEYIHUODEJIAODADESHUNSHIDIANLIU,CONGERSUODUANLEQUDONGMAICHONGDESHANGSHENGSHIJIAN。ZAITU2ZHONG,ZHENGMAICHONGSHIIGBTDEQUDONGXINHAO,ERFUMAICHONGDESHANGSHENGYANSHIYOULINGYIGEQUDONGMAICHONGYINQIDE。YINCI,WOMENXUYAOTAOLUNDESHILINGYIGEQUDONGMAICHONGDEXIAJIANGYANFENGZHI。ZHEISIGESHUCHUMAICHONGSHIYIYANGDE,SUOYIWOMENZHIXUYAOTAOLUNYIZHONGFANGSHI。RANER,WEILEZHIGUANHEWANZHENG,ZHEILIJIANGQITAOLUNWEIJUBUFUMAICHONGDESHANGSHENGYAN(RUXIASUOSHU)。DANGRAN,WENYAZHILUYEYOUDIANLIULIUDONG,DANSHIYUJIASUDIANRONGQICZHILUXIANGBI,TAFEICHANGXIAO。MEIYOUDIANZUR,DIANRONGQIJIANGZAIJIGEMAICHONGZHOUQINEICHONGDIANBINGSHIQUQIJIASUDU。YINCI,XUYAODANGMEIGEZHOUQIDESHANGSHENGYANDAODASHI,DIANRONGQICDEDIANHEBUYINGGAICUNCHUZAIDIANRONGQISHANG。YINCI,YIGEXIAODIANZUBINGLIANLIANJIEDAODIANRONGQI,WEIDIANRONGQITIGONGFANGDIANDIANLU。IGBTDESHURUZHAJIDIANRONGWEIMAN,ZAIPINGDINGQIJIAN(t3-t4)ZHAJIBAOCHIGAODIANPING。CISHI,IGBTDEGEDENGXIAOYUDUANKAI,BIANYAQIERCICEBAOCHIGAODIANPING。DANGMAICHONGXIAJIANGYAN(t4-t9)DAODASHI,IGBTDESHURUDIANRONGQIZAICIQIJIANJIANGXIANGHOUFANGDIAN,XUYAOJIANSU。RUGUOFANGDIANSUDUTAIKUAI,JIANGDAOZHIHENDADEGUANDUANFENGZHI。YINCI,XUYAOZUZHITONGGUOJIASUDIANRONGQIDEJIASUFANGDIAN。YINCI,ZAIJIASUDIANRONGQIQIANMIANCHUANLIANYIGEKUAISUHUIFUERJIGUAN,YIBIANJINTONGGUOWENYAGUANFANGDIAN。YALIDIAOJIEQINENGHENHAODIXISHOUQIFENGZHI,KONGZHIQIXIAJIANGYANDEDOUDU。


ZAIGAIJINDIANLUZHONGZENGJIADEQIJIANKEYIKANZUOSHIYIGEKEBIANDIANZU:DANGMAICHONGDESHANGSHENGYANKAISHIDAODAIGBT MillerPINGTAI(t0-t2)SHI,DIANZUZHIFEICHANGXIAO,ZHUYAOSHICHONGDIANDIANLIULIUGUOJIASUDIANRONGQIDEFENZHI,CONGERCHIXUJIASUZHAJIDIANRONGQIDECHONGDIAN。IGBT。ZAICIQIJIAN,IGBT MillerPINGTAIDECHONGDIANDIANLIULVSUIZHEDIANRONGQIDIANYADEZENGJIAERZHUJIANJIANXIAO。ZAIMILEPINGTAIMODUAN,CHONGDIANDIANLIUWEILING,CHONGDIANDIANLIUDADAOZUIDAZHI。ZHEIKEYITONGGUOZHAJIDIANZUSHANGDEDIANYABOXINGLAIQUEREN。ZAISHANGSHENGYAN(t3)DEMODUAN,CHONGDIANDIANLIUJIANXIAODAOJIHUWEILING,YINCIMEIYOUCHUXIANGUOCHONGFENGZHI。ZAIDIANRONGQIJIASUYIZUSAIQIKUAISUFANGDIANTONGDAOZHIQIAN,TIANJIAFANXIANGERJIGUAN。TU3SHIYUANSHIDEQUDONGBOXING;TU4SHIFUJIADIANLUQUDONGBOXING;TU5SHIFUZAIMANSHIDEQUDONGBOXING。

图3 原始驱动波形 


TU3YUANSHIQUDONGBOXING


2。QUDONGDIANLUGAIJINFANGFAFENXI


TU1SUOSHIDEDIANLUSHIDUIYUANYOUQUDONGDIANLUDEGAIJIN。TONGGUOZAIZHAJISHANGZENGJIAWENYAQI、ERJIGUAN、DIANRONGQIHEDIANZU,KEYILIANGHAODIXISHOUSHANGSHENGYAN、XIAJIANGYANHEFENGZHI。


白小姐四肖必选一肖CONGTU3HETU4DEBIJIAOZHONGKEYIKANCHU,ZAIXIAOYANCHIDEQINGKUANGXIA,FENGZHIYINGGAIZUIXIAOHUA。CONGTU3ZHONGKEYIKANCHU,YAOJIANXIAODEZHUYAOFENGZHISHIFUMAICHONGHOUYUANCHUDEGUOCHONGFENGZHI,YINWEIZHEIGEFENGZHIKENENGDADAOIGBTDEKAIKOUDIANYA(Vth),ZHEIJIANGDAOZHITONGYIQIAOBEIDELIANGGEIGBTZHIJIETONGGUO。TONGSHI,CONGTU5KEYIKANCHU,QUDONGBOXINGZAIMANZAI(600V/30A)XIAJUYOULIANGHAODEWENDINGXING,MEIYOUDADEFENGZHI,BAOZHENGLEIGBTDEWENDINGXING。SHEZHI,ANQUANGONGZUO。


图4 改进电路驱动波形


TU4GAIJINLEDIANLUQUDONGBOXING

图5 满负载时驱动波形图


TU5MANZAIQUDONGBOXING


QUDONGDENGXIAODIANLURUTU6SUOSHI。QIZHONG,LmSHIBIANYAQICIJICEDELICIDIANGAN;Z1SHIDIANYADIAOJIEQI(QIFANXIANGDENGXIAOYUERJIGUAN,SUOYIYONGERJIGUANDAITITA);RgSHIQUDONGDIANZU,CgsSHIZHAJIHEIGBTYUANZHIJIANDEDIANRONG;R1SHIXIANLUDEDENGXIAODIANZU。DENGXIAODIANLUBIAOMING:


白小姐四肖必选一肖Vgs=Vab+VZ1+VRg+VR1(1)


白小姐四肖必选一肖R1DESHIJIZHIFEICHANGXIAO,KEYIHULVEBUJI。WENYAERJIGUANZAID1HEC1DELIANGDUANBINGLIANLIANJIE。TADEDIANYASHID1HEC1LIANGDUANDEDIANYAZHIHE。DIANYADIAOJIEQIERJIGUANSHIYIZHONG“KEBIAN”DIANZUQI,KESUIDIANLIUZIDONGDIAOJIE。TONGGUOGAIBIANDIANZULAIKONGZHISHANGSHENGYANHEXIAJIANGYANDESULV,KEYIKONGZHIGUOCHONGFENGZHIDEDAXIAO。CELIANGDERgHEQUDONGBIANYAQICIJICEDEFANXIANGBOXINGRUTU7SUOSHI。RgSHANGDEDIANYABOXINGSHILIUGUOLICIDIANGANDEDIANLIUBOXING。ZHENGMAICHONGXIAJIANGYANDEGUOCHONGFENGZHISHIYOUJILIDIANGANYINQIDE:


白小姐四肖必选一肖U=Lmdi/dt(2)


CONGGONGSHI(2)KEYIKANCHU,LICIDIANGANYUEXIAO,LICIDIANGANSHANGDEDIANYAJIANFENGYUEXIAO,IGBT G-SZHIJIANDEDIANYAJIANFENGYUEXIAO。DUIYUMAICHONGPINGDING,YINGZONGHEKAOLVGEZHONGQINGKUANG。


图6 正脉冲下降沿等效电路


TU6。ZHENGMAICHONGXIAJIANGYANDEDENGXIAODIANLU


图7  Rg与变压器次边反向波形


TU7RgHEBIANYAQICIJICEDEFANXIANGBOXING


SAN。JIELUN


TONGGUODUISHANGSHUGAIJINDIANLUDEXIANGXIFENXI,KEZHIQUDONGMAICHONGGUOCHONGFENGZHIDUIANQUANGOUCHENGWEIXIE。


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