汽车用TVS如何选型，确保TVS能够有效保护汽车电路？
在生活中，BMS(Battery Management
System，电池管理系统)是随处可见的，特别是在汽车电子和工商业储能中是不可或缺的。那么我们每天说的BMS到底是什么呢?在汽车电子中，BMS其实就是一块电路板，这块电路板可以实时监测电池的充电和放电情况，做短路/断路的保护措施，防止电池出现过充电和过放电，延长电池的使用寿命。它的主要工作就是处理电池有关的任务，外观如图一和图二。
BMS可以对锂电池做电压温度检测，对电流进行实时检测，与控制端之间做实时的通讯等，如图三(GIF)。
在BMS中为了确保电池的安全和可靠性，需要进行全面的保护措施。其中，TVS作为一种重要的瞬态抑制器件，在BMS中发挥着重要的作用。TVS能够快速吸收和抑制电路中的瞬态过压脉冲，从而保护电路中的电子元器件不受损坏。在汽车BMS中，TVS主要用于以下两个方面：
电源端口保护：TVS可以放置在电源入口端，用于吸收电源线上的瞬态过电压，保护后续电路免受损坏，如图四所示。同时，TVS也可以多颗并联使用，以提高吸收能力和可靠性。
信号端口保护：BMS中的信号端口也需要进行保护，以防止静电等瞬态能量对信号传输造成干扰或损坏。此时，可以选择专用的ESD保护器件，以更好地保护信号端口。
因此选择合适的TVS来保护BMS是非常重要的。满足汽车BMS要求的TVS需要满足以下条件：
(1)工作电压：TVS的VR值应大于或等于应用电路电压的1.2倍。
(2)耐受电压尖峰：汽车电路中的过电压尖峰可能会对TVS造成损坏，因此需要选择合适功率的TVS型号。
(3)寄生电容：TVS的寄生电容可能会对汽车电路中的信号产生干扰，因此需要选择寄生电容较小的TVS管来保护信号线路。
(4)可靠性：汽车电路中的TVS需要具有高可靠性，能够长时间稳定工作，并承受各种恶劣的工作环境，因此需要满足AEC-Q101可靠性标准。
(5)尺寸和重量：汽车电路中的TVS需要考虑到尺寸和重量的限制，以避免对汽车的布局和重量造成影响。
(6)认证和合规性：TVS应符合相关的国际标准和认证要求，以确保其符合汽车行业的要求和规定。
选择汽车用的TVS需要根据具体的应用场景和电路参数进行选型，以确保TVS能够有效地保护汽车电路。通常DC12V电源系统常用的TVS型号是SM8S24A，DC24V电源系统常用的型号是SM8S33A(感兴趣的小伙伴可以去里阳半导体官网中查看)。如果您觉得选型麻烦，世强硬创平台为您提供合适的方案。
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本文由子文转载自里阳半导体 微信公众号，原文标题为:TVS在汽车BMS中的应用，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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【经验】简析汽车抛负载测试标准ISO7637-2和ISO-16750-2，如何选择一款TVS管帮助通过这两项测试
车载供电系统由于不同原因造成的过电压脉冲冲击，在最新的EMC和电源质量评定标准ISO7637-2和ISO-16750-2有详细的规定。其中抛负载测试是最严酷的测试标准，模拟正在运行的汽车交流发电机突然切断电池和负载的情况。抛负载比较复杂，有单抛、双抛之分，而且汽车电源系统也有12V汽油车和24V柴油车之分。本文旨在简要分析抛负载测试标准，并且讲解最常用的增加TVS的方法通过抛负载测试。
【选型】汽车电子功能模块抛负载保护TVS、MOV选型
随着汽车成为大众消费品进入千家万户，无论是传统车辆还是新能源PHEV，车辆的长期安全可靠性成为衡量汽车品质的一个重要指标。而保证汽车安全可靠，除了在汽车电子元器件的车规级的认证选型上需要关注之外，对于汽车电子功能模块的保护也越来越重要。本文介绍抛负载保护器件选型以及推荐Littelfuse TVS SLD8S24A和MOV V10E17AUTO、V20E17AUTO用于汽车电子功能模块抛负载保护。
硕凯电子TPSMEJ24CA车规级TVS专用于汽车中，击穿电压26.7~29.5V，功率5000W
每当我们打开车门的时候，产品LED灯会亮，迎宾灯夜间开门十分耀眼，看的见路况，安全时尚。但是在汽车中由于电源和负载断开时或电流突然中断等瞬态现象层出不穷，所以真正要适用在汽车上还要通过ISO7637-2标准，该标准规定了各种瞬态现象的波形和电压等级。硕凯电子研发的TPSMEJ24CA就是专门用在汽车上的车规级TVS。
Littelfuse PCN41500适用于SZXX系列汽车TVS产品
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型号- SMDJ64A,SMDJ20CA,SMDJ12A,SMDJ43CA,SMDJ85CA,SMDJ40A,SMDJ17CA,SMDJ6.0CA,SMDJ13CA,SMDJ36CA,SMDJ13A,SMDJ200CA,SMDJ70CA,SMDJ160A,SMDJ190CA,SMDJ120A,SMDJ75A,SMDJ78CA,SMDJ11A,SMDJXXXXX-Q,SMDJ51CA,SMDJ110CA,SMDJ51A,SMDJ24A,SMDJ48CA,SMDJ36A,SMDJ48A,SMDJ9.0A,SMDJ90A,SMDJ10A,SMDJ-Q SERIES,SMDJ22A,SMDJ40CA,SMDJ120CA,SMDJ18CA,SMDJ7.5A,SMDJ14CA,SMDJ200A,SMDJ6.5CA,SMDJXXXCA-Q,SMDJ6.0A,SMDJ170A,SMDJ130A,SMDJ9.0CA,SMDJ10CA,SMDJ33A,SMDJ45A,SMDJ33CA,SMDJ75CA,SMDJ90CA,SMDJ170CA,SMDJ85A,SMDJ18A,SMDJ58A,SMDJ26CA,SMDJ7.0CA,SMDJ180CA,SMDJ210A,SMDJ20A,SMDJ45CA,SMDJ22CA,SMDJ64CA,SMDJ60A,SMDJ60CA,SMDJ100CA,SMDJ8.0A,SMDJ17A,SMDJ15CA,SMDJ100A,SMDJ43A,SMDJ11CA,SMDJ180A,SMDJ5.0CA,SMDJ30CA,SMDJ150CA,SMDJ28A,SMDJ6.5A,SMDJ16A,SMDJ5.0A,SMDJ8.5CA,SMDJ210CA,SMDJ70A,SMDJ220A,SMDJ54A,SMDJ7.5CA,SMDJ78A,SMDJ160CA,SMDJ30A,SMDJ15A,SMDJ16CA,SMDJ58CA,SMDJ-Q,SMDJ220CA,SMDJ150A,SMDJ110A,SMDJ12CA,SMDJ54CA,SMDJ190A,SMDJ130CA,SMDJ28CA,SMDJ14A,SMDJ8.5A,SMDJ24CA,SMDJ26A,SMDJ8.0CA,SMDJ7.0A
12V车载电源抛负载TVS 怎么确定TVS功率
您好，12V车载电源抛负载TVS选型 ，可以参考文章：【经验】简析汽车抛负载测试标准ISO7637-2和ISO-16750-2，如何选择一款TVS管帮助通过这两项测试，计算链接：【经验】如何通过公式计算给出ISO7637-2和ISO16750-2 5a 5b过抛负载测试的TVS管参数选型；建议使用力特SLD8S24A
5.0SMDJxx（C）A-AT汽车负载突降保护TVS
描述- 本资料介绍了WAYON公司生产的汽车负载浪涌保护TVS二极管（型号：5.0SMDJxx(C)A-AT）。该产品具有单向和双向保护功能，快速响应时间小于1纳秒，良好的钳位能力，内置应变缓解设计。适用于汽车电源系统、音频视频设备、仪表盘、GPS导航等领域。
型号- 5.0SMDJ64A-AT,5.0SMDJ48A-AT,5.0SMDJ58CA-AT,5.0SMDJ120CA-AT,5.0SMDJ30A-AT,5.0SMDJ20A-AT,5.0SMDJ36CA-AT,5.0SMDJ75CA-AT,5.0SMDJ90CA-AT,5.0SMDJ22CA-AT,5.0SMDJ30CA-AT,5.0SMDJ90A-AT,5.0SMDJ120A-AT,5.0SMDJ60CA-AT,5.0SMDJ28CA-AT,5.0SMDJ70A-AT,5.0SMDJ24A-AT,5.0SMDJ70CA-AT,5.0SMDJ160CA-AT,5.0SMDJ54A-AT,5.0SMDJ160A-AT,5.0SMDJ43CA-AT,5.0SMDJ51CA-AT,5.0SMDJ22A-AT,5.0SMDJ36A-AT,5.0SMDJ130A-AT,5.0SMDJ54CA-AT,5.0SMDJXXA-AT,5.0SMDJ130CA-AT,5.0SMDJ100A-AT,5.0SMDJ40A-AT,5.0SMDJ18A-AT,5.0SMDJ24CA-AT,5.0SMDJ26A-AT,5.0SMDJ51A-AT,5.0SMDJ170CA-AT,5.0SMDJ60A-AT,5.0SMDJ100CA-AT,5.0SMDJ78A-AT,5.0SMDJ85CA-AT,5.0SMDJXXCA-AT,5.0SMDJ43A-AT,5.0SMDJ16CA-AT,5.0SMDJ40CA-AT,5.0SMDJ78CA-AT,5.0SMDJ33CA-AT,5.0SMDJ33A-AT,5.0SMDJ85A-AT,5.0SMDJ16A-AT,5.0SMDJ150A-AT,5.0SMDJ45A-AT,5.0SMDJ45CA-AT,5.0SMDJ170A-AT,5.0SMDJ75A-AT,5.0SMDJ28A-AT,5.0SMDJ58A-AT,5.0SMDJ15A-AT,5.0SMDJ64CA-AT,5.0SMDJ110A-AT,5.0SMDJ48CA-AT,5.0SMDJ110CA-AT,5.0SMDJ15CA-AT,5.0SMDJ18CA-AT,5.0SMDJ150CA-AT,5.0SMDJ26CA-AT,5.0SMDJ20CA-AT
SM8S系列表面贴装-600W TVS二极管规格书
描述- SM8S系列TVS二极管专为保护敏感电子设备免受雷击和其他瞬态电压事件引起的电压瞬变而设计。该系列二极管具有高可靠性、优异的钳位能力、低增量浪涌电阻、符合ISO7637-2 5a/5b和ISO16750负载浪涌测试标准，适用于汽车级AEC-Q101应用。
型号- SM8S18CA,SM8S SERIES,SM8S33C,SM8S33CA,SM8S43C,SM8S33A,SM8S30CA,SM8S43A,SM8S36CA,SM8S58CA,SM8S,SM8SXXCA,SM8S18A,SM8S28CA,SM8S18C,SM8S28A,SM8S20CA,SM8S43CA,SM8S22A,SM8S30A,SM8S24C,SM8S22CA,SM8S20A,SM8S22C,SM8S24CA,SM8S48C,SM8S26A,SM8S48CA,SM8S28C,SM8S36C,SM8S58C,SM8S48A,SM8S26CA,SM8S24A,SM8S36A,SM8S58A,SM8S26C,SM8SXXXX,SM8S40C,SM8S40CA,SM8S20C,SM8S40A,SM8S30C
PANJIT（强茂）汽车和高可靠性E-type TVS(瞬态电压抑制器)选型指南
目录- Product Introduction Automotive and High Reliability TVS
型号- P6AFC60A-AU,P1CH24A-AU,P1CH5.0A-AU,P4FL51A-AU,P6AFC6.5A-AU,P4FL8.5A-AU,P2AL36A-AU,P6AFC18A-AU,P4FL43A-AU,P4FL6.0A-AU,P2AL7.0A-AU,P2AL28A-AU,P6AFC26A-AU,P2AL26A-AU,P2AL18A-AU,P1CH8.0A-AU,P2AL3.3A-AU,P4FL17A-AU,P1CH16A-AU,P6AFC16A-AU,P6AFC7.0A-AU,P1CH30A-AU,P4FL10A-AU,P4FLXXA-AU,P1CH26A-AU,P2AL6.5A-AU,P6AFC28A-AU,P6AFC3.3A-AU,P2AL16A-AU,P6AFC14A-AU,P1CH14A-AU,P2AL22A-AU,P4FL12A-AU,P2AL30A-AU,P2AL15A-AU,P1CH28A-AU,P2AL13A-AU,P1CH7.0A-AU,P1CH8.5A-AU,P2AL6.0A-AU,P4FL14A-AU,P4FL5.0A-AU,P6AFC8.5A-AU,P2ALXXA-AU,P4FL6.5A-AU,P2AL7.5A-AU,P4FL48A-AU,P4FL22A-AU,P6AFC12A-AU,P6AFC64A-AU,P1CH12A-AU,P1CH6.0A-AU,P4FL7.5A-AU,P2AL11A-AU,SMF5.0A,P2AL24A-AU,P6AFC7.5A-AU,P4FL20A-AU,P1CH36A-AU,P4FL33A-AU,P6AFC36A-AU,P4FL16A-AU,P1CH10A-AU,P1CH7.5A-AU,P2AL8.5A-AU,P6AFC40A-AU,P6AFC10A-AU,P6AFC6.0A-AU,P4FL26A-AU,P6AFC43A-AU,P4FL18A-AU,P1CH15A-AU,P6AFC8.0A-AU,P4FL60A-AU,P1CH17A-AU,P6AFC17A-AU,P1CH33A-AU,P2AL10A-AU,P6AFC51A-AU,P2AL20A-AU,P4FL40A-AU,P4FL7.0A-AU,P6AFC33A-AU,P2AL33A-AU,P6AFC5.0A-AU,P6AFC20A-AU,P4FL36A-AU,P2AL17A-AU,P2AL8.0A-AU,P1CH6.5A-AU,P6AFC15A-AU,P1CH13A-AU,P4FL3.3A-AU,P6AFC58A-AU,P6AFC45A-AU,P4FL54A-AU,P4FL11A-AU,P1CH3.3A-AU,P2AL5.0A-AU,P4FL24A-AU,P2AL9.0A-AU,P4FL8.0A-AU,P6AFC22A-AU,P6AFC48A-AU,P6AFC30A-AU,P4FL30A-AU,P1CH11A-AU,P4FL64A-AU,P6AFC13A-AU,P1CH20A-AU,P4HEXXA-AU,P2AL40A-AU,P4FL13A-AU,P2AL14A-AU,P1CH18A-AU,P4FL45A-AU,P4FL15A-AU,P6AFC54A-AU,P4FL58A-AU,P4FL9.0A-AU,P1CH22A-AU,P6AFC24A-AU,P6AFC11A-AU,P6AFCXXA-AU,P6AFC9.0A-AU,P4FL28A-AU,P1CHXXA-AU,P1CH9.0A-AU,P2AL12A-AU,P2AL5.0A
【应用】电安科技的车规级双向TVS SMF20CA应用于汽车CAN总线，可承受200W功耗，拥有超低反向漏电流
某客户的一个氛围灯项目需要一个双向TVS。给客户推荐电安科技的车规级双向TVS——SMF20CA。应用在汽车CAN总线上有如下优势：SMF20CA是工作温度和储存温度都很广的车规级，双向TVS，满足客户要求。
SMF-Q系列表面贴装–200W TVS二极管规格书
描述- SMF-Q系列TVS二极管专为保护敏感电子设备免受雷击和其他瞬态电压事件的影响而设计。该系列具有小型化封装、高可靠性、低感应、出色的钳位能力等特点，适用于汽车、工业标准等应用。
型号- SMF43A,SMF18CA,SMF6.0A,SMF15A,SMF7.5A,SMF10CA,SMF14CA,SMF33CA,SMF75CA,SMF170A,SMF5.0CA,SMF160CA,SMF90CA,SMF100CA,SMF-Q SERIES,SMF70A,SMF130A,SMF30A,SMF54A,SMF78A,SMF6.5CA,SMF14A,SMF26A,SMF8.5CA,SMF26CA,SMF22CA,SMF45CA,SMF64CA,SMF60CA,SMF9.0CA,SMF150CA,SMF-Q,SMF13A,SMF8.0A,SMF11CA,SMF15CA,SMF30CA,SMF180A,SMF120CA,SMF40A,SMF100A,SMF64A,SMF5.0A,SMF12A,SMF24A,SMF36A,SMF6.5A,SMF48A,SMFXXXCA-Q,SMF7.0CA,SMF170CA,SMF51A,SMF75A,SMF11A,SMF12CA,SMF58CA,SMF16CA,SMF54CA,SMF150A,SMF90A,SMF7.5CA,SMF110A,SMF10A,SMF7.0A,SMF22A,SMF28CA,SMF58A,SMF8.5A,SMF24CA,SMF18A,SMF20CA,SMF43CA,SMF85CA,SMF110CA,SMFXXX-Q,SMF85A,SMF33A,SMF45A,SMF17CA,SMF17A,SMF36CA,SMF78CA,SMF13CA,SMF160A,SMF180CA,SMF51CA,SMF70CA,SMF60A,SMF120A,SMF20A,SMF6.0CA,SMF9.0A,SMF16A,SMF28A,SMF8.0CA,SMF48CA,SMF40CA,SMF130CA
SM8Sxx（A）汽车甩负荷保护TVS
描述- 本资料介绍了SM8S系列汽车负载浪涌保护TVS二极管。该系列产品适用于敏感电子设备的过压保护，特别针对由电感负载切换和照明引起的电压瞬变。产品具有快速响应时间、优异的钳位能力和玻璃钝化结结构，满足ISO7637-2浪涌规范，并采用低剖面封装和高温焊接技术。
型号- SM8S26,SM8S28,SM8S17A,SM8S11A,SM8S20,SM8S33A,SM8S40,SM8S22,SM8S15A,SM8S24,SM8SXX,SM8S13A,SM8S15,SM8S18A,SM8S14,SM8S16A,SM8S17,SM8S36,SM8S16,SM8S28A,SM8S18,SM8S10A,SM8S30,SM8S22A,SM8S30A,SM8SXXA,SM8S20A,SM8S11,SM8S14A,SM8S10,SM8S26A,SM8S12A,SM8S13,SM8S12,SM8S24A,SM8S33,SM8S36A,SM8S40A
WSXXP4SMA（-B）-AT汽车负载突降保护TVS
描述- 本资料介绍了Wayon公司生产的汽车负载浪涌保护TVS二极管WSxxP4SMA(-B)-AT。该产品具有单向和双向保护功能，快速响应时间小于1纳秒，良好的钳位能力，内置应变缓解，低感抗，低剖面尺寸，符合IEC 61000-4-2标准，并满足AEC-Q101认证要求。
型号- WS12P4SMA-B-AT,WS8.5P4SMA-AT,WS5.0P4SMA-B-AT,WS51P4SMA-AT,WS36P4SMA-AT,WS7.0P4SMA-B-AT,WS8.0P4SMA-B-AT,WS6.0P4SMA-B-AT,WS20P4SMA-B-AT,WS16P4SMA-B-AT,WS9.0P4SMA-B-AT,WS54P4SMA-B-AT,WS6.0P4SMA-AT,WS43P4SMA-B-AT,WS64P4SMA-AT,WS75P4SMA-AT,WS15P4SMA-AT,WS90P4SMA-AT,WS11P4SMA-B-AT,WS24P4SMA-B-AT,WS18P4SMA-B-AT,WS18P4SMA-AT,WS30P4SMA-AT,WS58P4SMA-AT,WS13P4SMA-AT,WS85P4SMA-B-AT,WS40P4SMA-B-AT,WS40P4SMA-AT,WS7.0P4SMA-AT,WS11P4SMA-AT,WS85P4SMA-AT,WSXXP4SMA-B-AT,WS28P4SMA-B-AT,WS15P4SMA-B-AT,WS22P4SMA-AT,WS6.5P4SMA-AT,WS20P4SMA-AT,WS5.0P4SMA-AT,WS54P4SMA-AT,WS6.5P4SMA-B-AT,WS7.5P4SMA-B-AT,WS14P4SMA-B-AT,WS33P4SMA-B-AT,WS8.5P4SMA-B-AT,WS78P4SMA-B-AT,WS33P4SMA-AT,WS22P4SMA-B-AT,WS48P4SMA-AT,WS8.0P4SMA-AT,WS70P4SMA-B-AT,WS16P4SMA-AT,WS30P4SMA-B-AT,WS48P4SMA-B-AT,WS78P4SMA-AT,WS75P4SMA-B-AT,WS7.5P4SMA-AT,WS45P4SMA-AT,WS26P4SMA-B-AT,WS64P4SMA-B-AT,WS14P4SMA-AT,WS51P4SMA-B-AT,WS43P4SMA-AT,WS28P4SMA-AT,WS12P4SMA-AT,WS45P4SMA-B-AT,WS9.0P4SMA-AT,WS13P4SMA-B-AT,WS58P4SMA-B-AT,WS10P4SMA-AT,WS26P4SMA-AT,WS70P4SMA-AT,WS90P4SMA-B-AT,WS24P4SMA-AT,WS10P4SMA-B-AT,WSXXP4SMA-AT,WS36P4SMA-B-AT
WSXXP30SMC（-B）-AT汽车负载突降保护TVS
描述- 该资料详细介绍了Wayon公司生产的汽车负载浪涌保护TVS二极管（WSxxP30SMC(-B)-AT系列）。该产品具有单向和双向保护功能，适用于汽车电子系统，包括汽车电源系统、汽车音响和视频、汽车仪表、汽车GPS、CAN总线等。产品具有快速响应时间、良好的钳位能力、内置应变缓解、低感抗、低剖面封装等特点，符合AEC-Q101标准。
型号- WS58P30SMC-B-AT,WS28P30SMC-B-AT,WS90P30SMC-AT,WS45P30SMC-B-AT,WS18P30SMC-B-AT,WS78P30SMC-B-AT,WS90P30SMC-B-AT,WS60P30SMC-B-AT,WS70P30SMC-B-AT,WS20P30SMC-AT,WS75P30SMC-AT,WS40P30SMC-B-AT,WS78P30SMC-AT,WS15P30SMC-B-AT,WS48P30SMC-B-AT,WS28P30SMC-AT,WS22P30SMC-AT,WS51P30SMC-AT,WS43P30SMC-B-AT,WS33P30SMC-B-AT,WS40P30SMC-AT,WS16P30SMC-AT,WS33P30SMC-AT,WS22P30SMC-B-AT,WS45P30SMC-AT,WS70P30SMC-AT,WSXXP30SMC-AT,WS51P30SMC-B-AT,WS15P30SMC-AT,WS85P30SMC-AT,WS24P30SMC-B-AT,WS43P30SMC-AT,WS58P30SMC-AT,WSXXP30SMC-B-AT,WS54P30SMC-B-AT,WS64P30SMC-AT,WS64P30SMC-B-AT,WS60P30SMC-AT,WS54P30SMC-AT,WS48P30SMC-AT,WS20P30SMC-B-AT,WS30P30SMC-B-AT,WS16P30SMC-B-AT,WS36P30SMC-AT,WS75P30SMC-B-AT,WS85P30SMC-B-AT,WS30P30SMC-AT,WS36P30SMC-B-AT,WS24P30SMC-AT,WS18P30SMC-AT
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