【产品】防雷击的TVS二极管,保障CAN总线通信安全

2017-03-07 世强
保护器件,SM,SM24CANB-02,SM24CANA 保护器件,SM,SM24CANB-02,SM24CANA 保护器件,SM,SM24CANB-02,SM24CANA 保护器件,SM,SM24CANB-02,SM24CANA

随着科技的发展,汽车从纯机械化进阶到电子化、智能化,甚至在不久的将来,任何一辆汽车都可能实现自动驾驶。自动驾驶的实现必然需要各个电子部件的协同与配合,从路况信息的获取到分析处理到最后的执行,相互之间的联系也会越来越紧密。其中通信的安全是确保其顺利执行的前提。


在所有的汽车总线中,CAN总线的应用尤为广泛。其作为汽车安全的保障之一总是受到来自多方面的干扰,比如电源、电磁干扰,静电,雷击等。而这些干扰所造成的破坏有些是可恢复的,有些却是永久性的,比如雷击。因此为CAN总线增加防雷措施是有非常有必要的。


图1:SM24CANB-02HTG应用实例


增加防雷措施的常见做法是在总线端接入TVS二极管,这样可有效地抑制雷击浪涌,使总线电压钳位在安全的电压范围之内。力特推出的CAN总线保护器件SM24CANA-02HTG和SM24CANB-02HTG,符合AEC-Q101汽车标准。内含两个双向TVS管,在总线端只需一颗器件即可,节省BOM成本。同时其具有低至0.1uA的泄露电流,极低的钳位电压(SM24CANA-02HTG:36V,SM24CANB-02HTG:34V),这对于降低CAN总线的功耗有很大帮助。雷击下,基于IEC61000-4-5标准,SM24CANA-02HTG和SM24CANB-02HTG可分别承受3A和10A的浪涌电流(tP=8/20μs)。


如需分立器件,可选用SPHV系列,该系列除了具有以上优点外,还有低至0.37Ω的动态内阻,这意味着钳位电压更低,能够更好地保护系统总线。


总之,CAN总线少不了TVS,有它,总线安全才有保障。

授权代理商:世强先进(深圳)科技股份有限公司
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  • serena Lv7. 资深专家 2018-09-07
    接口防护很重要
  • 山河 Lv6. 高级专家 2017-03-07
    图画的不太对吧,tvs有根线把can差分线连接到了一起
    • 世小强回复: 非常感谢您的指正,文中图片已经修正,谢谢!
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型号- 1.5SMC540CA,SMBJ,1812L,SMBJ8.5CA,5KP200A,SMBJ51A,SMBJ75A,SMBJ70CA,SG75,SL1411A600A,PLED 5 QFN,5KP40A,5KP64A,AC,1812L020PR,SMBJ40A,SMBJ17CA,SMBJ64A,1.5SMC200CA,1.5SMC36CA,5KP18CA,1.5SMC13CA,5KP51A,5KP75A,SMBJ160CA,0312005.MXP,0456040.DR,5KP8.5CA,K1500GRP,1812L110/33MR,SMBJ85A,SMBJ28CA,5KP160CA,CG3,K2200G,5KP78A,1.5SMC510A,60R110XU,5KP,5KP28CA,SMBJ300A,5KP30A,CG35.0,5KP54A,SMBJ150CA,MDCG-4,1206L012WR,1206L110WR,1.5SMC8.2CA,SMBJ16CA,1812L150/12DR,5KP70CA,5KP17CA,CG35.0LTR,5KP180CA,CG32.0,K1100GRP,5KP60A,1.5SMC7.5CA,SMBJ170CA,1.5SMC27CA,SMBJ400A,K1200E70,1.5SMC91CA,SMBJ60A,SMBJ15CA,1.5SMC180CA,1.5SMC400A,5KP16CA,1.5SMC15CA,1.5SMC9.1CA,1.5SMC6.8CA,SL1411A800A,SMBJ26CA,SMBJ400CA,1.5SMC300A,60R050X,60R,5KP26CA,SMBJ90CA,1.5SMC300CA,SL1411A800,1.5SMC530CA,60R010XU,SMBJ70A,SMBJ14CA,1.5SMC530A,5KP170CA,60R075X,60R160X,5KP15CA,5KP85A,1.5SMC16CA,1.5SMC39CA,SM24CANA-02HTG,60R090XPR,1.5SMC82CA,SMBJ48CA,60R300X,1.5SMC200A,5KP12A,5KP36A,5KP24A,5KP48A,1.5SMC36A,1.5SMC24A,1.5SMC12A,0452002.,5KP48CA,5KP200CA,1.5SMC510CA,K2200SRP,SMBJ130CA,SM24CANA,5KP6.5CA,5KP90CA,1.5SMC11A,SMBJ13CA,1.5SMC540A,5KP190CA,SMBJ36CA,5KP11A,1.5SMC47A,0456030.ER,1812L075/33DR,5KP14CA,SL1411A,048502.5,SMBJ24CA,1.5SMC440A,1812L050PR,5KP14A,1.5SMC170CA,5KP26A,CG31.5LTR,CG31.5,5KP24CA,SMBJ90A,SMBJ12CA,1.5SMC400CA,1.5SMC550A,SMBJ58CA,5KP13A,SMBJ188CA,1.5SMC13A,SMBJ350CA,0452001.,1.5SMC18CA,5KP8.0CA,5KP13CA,5KP36CA,AC120,SMBJ5.0A,1.5SMC220A,1812L150/24,0312.062MXP,048502.5DR,K2400G,SMBJ180A,1.5SMC16A,312,SL1411A470A,1.5SMC150CA,5KP20A,1206L035YR,045803.5,1206L050/15YR,5KP100CA,SMBJ11CA,1.5SMC100A,V05E17P,SL1411A090,5KP7.5CA,1.5SMC39A,1.5SMC27A,1.5SMC15A,5KP190A,K1500SRP,5KP210CA,K1500E70,0452007.,5KP12CA,5KP58CA,5KP43A,1.5SMC62CA,SMBJ22CA,SMBJ45CA,CG32.0LTR,452,5KP22A,1.5SMC18A,5KP58A,SMBJ170A,SMBJ10CA,456,458,LV ULTRAMOV,K1500,1206L150PR,60R090X,5KP22CA,5KP45CA,5KP10A,K1200G,5KP5.0A,CG31.01,1812L200DR,SMBJ6.0A,1.5SMC110A,SMBJ33CA,SMBJ250CA,5KP45A,1206L150THWR,5KP33A,5KP9.0CA,5KP180A,5KP11CA,SL1411A350A,1.5SMC160CA,0452005.,SMBJ5.0CA,5KP6.0A,60R110XMR,SMBJ220CA,1.5SMC250CA,1.5SMC480CA,5KP110CA,60R075XPR,045602.5,SMBJ160A,0456030.,1812L200THPR,5KP6.0CA,1.5SMC51CA,K2200GRP,1.5SMC120A,1.5SMC75A,SMBJ78CA,1.5SMC51A,SG300,1.5SMC350A,60R110X,5KP10CA,SMBJ43CA,5KP170A,SMBJ20CA,1.5SMC9.1A,1812L110,5KP33CA,0458007.DR,SMBJ7.0A,1.5SMC30A,1.5SMC480A,1.5SMC,1206L160ZR,1.5SMC250A,TMOV25SP115E,5KP20CA,5KP43CA,SMBJ54CA,SG,SMBJ18A,1812L075/24DR,5KP220CA,1812L010DR,0456040.,1206L200,SMBJ150A,1206L050YR,1.5SMC75CA,60R160XF,0458007.,0452007.MRL,SMBJ6.0CA,1.5SMC130A,5KP160A,K2000F1,SMBJ100CA,1.5SMC7.5A,1.5SMC8.2A,1812L050/30PR,1.5SMC6.8A,5KP78CA,0452001.MRL,0456020.ER,1.5SMC20A,SMBJ6.5A,5KP7.0CA,5KP16A,SMBJ16A,SMBJ30CA,1.5SMC68A,5KP28A,SMBJ28A,1.5SMC56A,5KP6.5A,1812L200,SMBJ188A,K1200,5KP7.0A,SMBJ8.0A,1.5SMC30CA,1.5SMC43A,5KP150A,SMBJ440CA,5KP54CA,SMBJ64CA,60R300XF,5KP15A,K2400,SMBJ17A,1812L300MR,1.5SMC350CA,1206L110,SMBJ250A,SMBJ120CA,1.5SMC43CA,5KP8.0A,1.5SMC20CA,1.5SMC22A,1.5SMC10A,5KP250A,5KP64CA,SMBJ14A,SMBJ75CA,SMBJ26A,5KP18A,1812L300,0456020.,SMBJ110CA,0458001.,SMBJ7.0CA,K1100,SMBJ130A,1.5SMC130CA,0312002.MXP,SL1411A470,SL1411A350,1206L016,SMBJ7.5A,1.5SMC33A,5KP120CA,1.5SMC150A,SMBJ40CA,5KP30CA,SMBJ15A,5KP17A,1206L012,1206L075/13.2WR,K1500G,SMBJ9.0A,045803.5DR,0312035.MXP,SMBJ12A,SMBJ51CA,60R185X,5KP40CA,SMBJ36A,SMBJ24A,SMBJ48A,0452002.MRL,MDSR-10,SMBJ350A,1.5SMC110CA,SMBJ120A,1.5SMC91A,TMOV25S,SMBJ6.5CA,60R030XU,5KP130A,0312002.,1.5SMC160A,5KP75CA,1206L150,SMBJ13A,SMBJ85CA,K2200,1206L035,5KP7.5A,0456025.,1812L075,5KP250CA,SMBJ8.0CA,K2400SRP,1.5SMC22CA,SMBJ8.5A,0452005.MRL,5KP130CA,1.5SMC82A,60R030X,1206L160,SMBJ22A,60R250XF,5KP85CA,SMBJ58A,K2400E70,5KP70A,SMBJ110A,5KP8.5A,1.5SMC68CA,SL1411A600,SMBJ300CA,1.5SMC170A,1.5SMC33CA,1.5SMC10CA,1206L075THYR,5KP9.0A,5KP120A,1206L016WR,SMBJ10A,1206L050,1812L050,0456025.ER,5KP51CA,SMBJ11A,0312005.,SMBJ220A,SMBJ180CA,1.5SMC56CA,1.5SMC120CA,KXXXZY,1206L,K2000E70RP3,SMBJ43A,5KP220A,SMBJ7.5CA,1.5SMC440CA,60R250X,0458001.DR,SMBJ100A,1.5SMC550CA,1.5SMC180A,1.5SMC11CA,5KP5.0CA,5KP110A,SMBJ20A,5KP150CA,SMBJ45A,SMBJ33A,K2000,SMBJ9.0CA,1206L200PR,SMBJ60CA,0458001.DRA,1.5SMC100CA,1206L075,1812L150,SMBJ440A,5KP90A,0312035.,1.5SMC62A,SMBJ200CA,5KP210A,SM24CANA-02,SMBJ78A,60R010X,5KP60CA,60R050XPR,1.5SMC47CA,1.5SMC24CA,1812L020,60R185XF,SL1411A090C,0312.062,SMBJ30A,SMBJ18CA,1.5SMC220CA,5KP100A,SMBJ54A,0312.187,1812L110/16DR,SMBJ200A,1.5SMC12CA,1812L010

培训文档-商品应用及供应商介绍  -  LITTELFUSE  - 2016年01月01日 PDF 中文 下载

【产品】采用SOT-323封装的Can总线ESD保护二极管TPE2462BC3,漏电流低至0.2μA

台舟电子的TPE2462BC3是一款Can总线ESD保护二极管,采用SOT-323封装。该器件符合IEC61000-4-2标准,可提供高达±30kV的ESD保护,同时满足IEC61000-4-5规范,可承受高达4A(8/20μs)的峰值脉冲电流。

产品    发布时间 : 2022-04-22

【应用】Melexis推出汽车总线系统通过GME6718GS测试的3种解决方案

TH8056是Melexis推出一款用于单线数据链路的物理层设备CAN收发器,工作电压范围为5-27V,逻辑输入兼容3.3-5V,可以直流由汽车电源供电。为了使汽车总线系统满足GME6718GS测试规范又不影响器件使用,Melexis推出3种解决方案:在储能电容器和TH8056之间添加反向保护二极管;向储存电容器添加一个大于51Ohm的串联电阻;向储存电容器及串联电阻并联一个二极

应用方案    发布时间 : 2018-05-31

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