【应用】自恢复型保险丝PTC 16R600G应用于车载加热杯电源部分,跳闸快速,安全无铅
车载电热杯是一种利用车辆上现有的电源系统进行加热的全新产品,符合中国甚至全球的生活习惯,可以用来烧开水、泡方便面、煮鸡蛋、沏茶、泡咖啡、泡牛奶等,一切都可在路途中轻松解决,既节约了时间,减少开销,也减少了去路边店的次数。下图是车载加热杯电源部分:
图1 加热杯电源部分
该部分的作用是给加热片供电以及将车载电源转换为5V电源给主控MCU供电。车载加热杯的主要功能是开机后发热片通电加热,用NTC实时监控发热片温度,一开始全电压输出,快达到60℃时,PWM输出加热,使杯内温度控制在60℃。
本文主要是给电源部分选择合适的保险丝。鉴于加热杯属于消费电子类产品,选择熔断型保险丝会增加售后成本,所以推荐选择PTC自恢复型保险丝。从加热杯的主要功能可以得知,工作温度为60℃左右。下图为LITTELFUSE的16R系列PTC各型号在不同的工作环境温度对应的保持电流:
图2 16R系列PTC各工作环境温度下的保持电流
从图1可知工作电流为4A,保险丝的保持电流应略大于工作电流,在60℃的工作温度下,16R600G较为合适。16R600G的工作电压为16V,也满足电源电路工作电压为12V的条件。且在正常工作状态下,电阻仅为0.028欧姆,对电路影响小。
使用littelfuse的16R600G应用在车载加热杯上有以下优点:
1.符合RoHS标准,无铅
2.快速跳闸时间,安全有效的保护后级电路
3.减少售后成本
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目录- 特性和术语 应用和电路保护典型设计 选择工作表 表面贴装型 径向引线型 轴向引线型
型号- 30R135UU,72R300XF,1210L075/24PR,30R090UU,600R160-R1UR,1206L025YR,1812L,1812L350SL,1812L010/60DR,0603L050SLYR,2016L075/60,600R160-RAF,72R160XMR,0603L010YR,60R185XMR,1210L150TH,0805L110SLYR,16R1100G,1210L450SLWR,0402L050SLKR,0603L150SL,30R160UPR,1812L020PR,1206L110/12SL,2920L300DR,1206L175SLYR,72R090X,16R400GPR,16VT210SU,0805L260SLTH,1210L175WR,1812L200/12,LORHO,250S130¨CRCDR,30R300U,1812L200/16,16R1000GF,0805L100,16R250GU,20LR450,250R145-RA,2016L075/60MR,30R090,250R145-RAU,0402L020SL,2920L500/16,1206L260SLTHYR,1812L110/33MR,250S130¨CRC,250S130¨CRB,250S130¨CRA,16R135B,60R110XU,250S130V,2920L330/24MR,0603L075SL,0805L110,1206L175PR,250R145-RB,0603L,1206L012WR,16R500GU,24LT100,1812L150/12DR,1812L200/16DR,16R185BU,1210L380SL,600R160-RAUR,250S130¨CRBDR,30R800UH,15ST175U,250R145ZR,600R160F,16R1000G,16R110BPR,1206L380SLTHYR,16R250GPR,250R120-R3U,600R150-RA,600R150-RB,60R250,60R010,1812L075/33,250R120-R3,250R120-R2,250R120-R1,1210L200,1812L260/16MR,30R250UPR,72R135XMR,16R600GDR,1210L400SL,1206L300SLTHYR,30R700UMR,1206L450SL,250R120-RF,1206L200SLYR,250R120-RC,250R120-RA,0603L035YR,250R120-R2U,0603L175SL,1210L300SLYR,16R800GMR,60R375XH,16R110B,1812L190SLPR,16R1100GF,250R120TU,0805L075SLYR,16R1200G,250R120-RFZR,0402L,2920L200DR,2920L300,600R150F,2920L700SL,250R120-R1U,30R700UF,1210L075YR,2920L700SLPR,1210L110/16WR,60R110,1210L175SLYR,0805L010/24,16R600GU,2920L075/60MR,30R400U,60R050X,72R,60R,0402L010SLKR,72R090XPR,1206L050/15,1206L150SLYR,72R185XMR,2920L260PR,72R250XMR,1206L450SLWR,60R010XU,16VT210S,30R185,1812L075/24,1206L110SL,16R700GKLMR,1206L110TH,60R075X,LT SERIES,0603L100SLYR,1812L370SLPR,16R160BU,0805L110SL,60R025XPR,60R160X,0805L200SLTHYR,30R090UPR,2920L260/24,15LR380U,2920L,2920L185DR,16R500GPR,250R120T,60R090XPR,250R120U,30R300UU,1812L270SLPR,60R300X,1812L300SLPR,30R600U,72R075XU,0603L075SLYR,15LR260U,2016L,0402L020SLKR,06R075BU,06SL370GM,1206L075/16WR,1812L260SL,60R020XPR,20LR730,250R180MR,2920L330/24,06R155BPR,06SL190G,72R040XU,16R400G,1210L110THYR,2920L030DR,1812L160PR,2920L260/24DR,1812L075/33DR,1812L260TH,1210L035YR,1812L270SL,16R135BPR,1206L020YR,1206L075/13.2,30R250,0805L200SLTH,1812L050PR,600R150-RBF,0402L035SLKR,30R600UF,1210L350SL,16R300G,1206L075/13.6,72R075XPR,15LR260,15LR380,16R300GPR,30R185UPR,16R700GF,1812L014DR,60R160XMR,250R145U,0805L,1206L075SL,30R090U,2920L150DR,0805L050WR,1206L150TH,1812L200/12DR,0402L035SL,600R150-RAF,250R145T,1206L150SL,72R300XMR,1206L400SLWR,72R160XF,1812L150/24MR,30R500U,72R030XPR,2920L075DR,1206L075TH,1210L010WR,1812L350SLPR,LR,LT,1812L160/12DR,1812L150/24,60R025XU,2920L400/15MR,16R700GMR,0805L150SLYR,72R050XU,30R,16R1100GMR,60R010XPR,60R090,2920L200/24,1206L035YR,250R145-RBU,1206L050/15YR,16R800GF,1812L150/12,2920L400/15,VT SERIES,30R700U,1210L175SL,250R145TZR,0603L020YR,250S130¨CRADR,30R400UF,0805L300SL,1812L020/60,2016L050,1210L260SL,2016L050MR,16R250BU,1210L110/12WR,1812L010/60,06R120BPR,1812L075PR,30R400UMR,72R065XPR,60R135XF,SL SERIES,0805L010/24YR,16R250BPR,1812L370SL,30R160UU,20LR450U,0603L050SL,60R090X,1206L035/16,1210L020WR,1210L110/16,600R160-R1F,0402L010SL,250S130DR,60R185,24LT100U,72R020XPR,1206L150THWR,1210L380SLYR,1206L175SL,16R700GKL,72R300X,2920L050DR,2016L030,60R090XU,1210L110/12,2016L150,250R120ZR,16R185BPR,60R017XPR,1812L75/33,60R110XMR,1206L035/16YR,60R075XPR,60R025X,15ST175,250R180TMR,1812L150ZR,2920L050,1210L005WR,72R375X,1812L260THDR,1812L200THPR,72R050XPR,1812L125/16,12VL175XLU,0805L010YR,30R500UF,1812L75/24,16R700G,16R700GKLF,60R135X,2920L185,60R110X,1210L075,1812L160/12,16R900GF,1812L110,600R150-RBZR,600R,1812L125/6,60R040XPR,250R120-R1ZR,250R120-RFU,16R600G,2920L030,2920L150,30R800U,2016L100,1812L035/30DR,1812L075/24DR,16R135BU,250R120,30R185UU,SL,1812L010DR,2920L125PR,1206L200,1206L050YR,30R185U,ST,0603L150SLYR,1206L380SLTH,60R160XF,72R020X,30R600UMR,1812L300SL,60R050XU,0805L075SL,0805L260SLTHYR,72R250X,06SL370G,30R300,2016L075/060,1210L175,72R020XU,1812L260SLPR,250R180TF,16R1400GH,16R090BU,250R120-RAZR,0805L150SL,1812L050/30PR,30R160U,1210L260SLYR,60R065XPR,0805L020YR,1210L,1206L350SLTHYR,60R017X,1206L075SLYR,1206L110THYR,72R040XPR,2920L250DR,30R500,1210L110TH,1812L110/24DR,250R120-RCU,2016L200,0603L050YR,0805L300SLWR,1812L200,06R155BU,72R250XF,250R145,60R017XU,1812L020/60DR,1812L035/30,0603L050,1812L125/6PR,30R400,1206L400SL,60R030XPR,1210L350SLWR,60R300XF,VL,1206L260SLTH,06R120BU,72R065XU,1812L300MR,1210L400SLWR,VT,1210L450SL,16R,2920L500/16MR,1206L300SLTH,2920L075,250R120-RAU,72R030XU,250S130-RC,250S130-RB,16R110BU,250S130-RA,1812L300,2920L100PR,250S130,30R110UPR,30R250U,1206L110/12SLYR,0805L175SLYR,72R135X,0805L075WR,1206L016,16R500G,1206L150/12SL,0603L175SLYR,30R250UU,30R900U,16R900GMR,72R185XF,16R090B,1206L012,1206L075/13.2WR,600R150-RAZR,72R110X,1210L075/24,72R025X,0805L050,60R065XU,72R075X,1210L300SL,72R160X,0603L020,250R080ZR,72R090XU,1210L200SLYR,250R120TZR,60R185X,0603L025,0805L100WR,06R120B,2920L200/24DR,250R180,30R135U,60R040X,1206L025,06SL190GM,600R160-RA,72R135XF,06R075BPR,1206L020,1210L005,600R160UR,250R145-RBZR,12VL175XL,6
【选型】Littelfuse(力特)保险丝座选型指南
目录- Fuse Characteristics, Terms and Consideration Factors Fuse Selection Checklist PTC Characteristics and Terms PTC Product Applications Typical PTC Circuit Protection Designs Fuse Standards Fuse and PTC Products Selection Guide Fuse Packaging and Part Numbering
型号- 1812L,471,230,472,473,232,233,234,235,477,874,875,876,239,877,2016L,461E,485,LORHO,400,157T,369,804,807,808,600R,437 SERIES,USBR,370,251,372,373,494,253,374,2205,SL,0603L,0805L,ST,382,262,383,263,385,265,266,267,268,269,303,429,1210L,LR,LT,391,1206L,392,272,273,274,395,154,275,396,397,398,157,278,399,219XA,279,312,950,313,30R,159,314,435,315,437,438,318,LORHO PTC,160,285,440,250S,441,250R,322,443,202,203,324,VL,325,446,326,447,448,449,208,209,VT,16R,451,452,332,453,154T,454,213,456,215,72R,216,458,60R,217,459,218,977,460,461,220,462,464,465,224,466,225,467,468,501,469,229,505,506,2920L,508
X1LX2X3 series PTC Thermistor (TÜV) Certificate (R 50119118)
型号- 0805L020X4X5,1812L050XXYYYYY,0603L008XXYYYYY,0603L10PSLXXYYYYY,1206L020XXYYYYY,1206L112XXYYYYY,1210L110XXYYYYY,1206L400SL-SXXYYYYY,1206L116XXYYYYY,1206L112S LXXYYYYY,1206L024XXYYYYY,1206L300SLXXYYYYY,2920L516XXYYYYY,1206L750SLXXYYYYY,1812L200XXYYYYY,1206L300SLTHXXYYYYY,X1LX2X3YYZZZZZ,2920L030X4X5,0603L100SLX4X5,0805L005XXYYYYY,0603L075SLX4X5,1812L550SLXXYYYYY,1812L370SLX4X5,0603L010X4X5,0805L075X4X5,0805L150ULXXYYYYY,2920L524SLXXYYYYY,1812L150THXXYYYYY,1206L050XXYYYYY,1206L350SLTHXXYYYYY,2920L200X4X5,0805L100THXXYYYYY,0603L025X4X5,1812L024X4X5,1206L380SLTHXXYYYYY,0402L005XXYYYYY,0805L100,1206L200SLX4X5,1812L260SLX4XS,1206L124SLXXYYYYY,1812L600SLXXYYYYY,1812L020XXYYYYY,1210L200SLXXYYYYY,0805L050THXXYYYYY,1206L050SLXXYYYYY,1812L200THXXYYYYY,2920L224X4X5,1206L400SLTHXXYYYYY,2016L133X4X5,1210L175X4X5,1812L050-CX4X5,2920L160XXYYYYY,1812L160-CX4X5,1206L050SLX4XS,1812L150-C,1812L033X4X5,1206L230SLXXYYYYY,1812L260-C,1210L350SLXXXYYZZZZZ,2920L700SLXXYYYYY,1812L300X4X5,1210L200X4X5,2016L500XXYYYYY,1812L110THXXYYYYY,0805L020SLXXYYYYY,1210L200,1812L035XXYYYYY,1206L078X4X5,1210L400SLXXYYYYY,1210L260SLXXYYYYY,1206L175X4X5,1206L005XXYYYYY,1812L800SLXXYYYYY,0805L024XXYYYYY,1812L010X4X5,1812L125-CX4X5,1206L150THX4X5,0805L075SLX4X5,0805L110SLX4X5,1210L024X4X5,1206L500SLXXYYYYY,0603L300SLXXYYYYY,1210L450SLTHXXYYYYY,2920L300,1206L110-CX4X5,1206L015X4X5,1206L075-CX4X5,1210L650SLXXYYYYY,0805L110ULXXYYYYY,0805L300SLXXYYYYY,1206L150THXXYYYYY,1812L216X4X5,1206L112SLXXYYYYY,1812L370SLXXYYYYY,1206L016XXYYYYY,2016L060XXYYYYY,1812L200THX4X5,1206L020-C,1206L200X4X5,1206L035XXYYYYY,0805L035X4X5,1210L450SLXXYYYYY,1206L312SLXXYYYYY,0805L030XXYYYYY,1812L160X4X5,0603L004XXYYYYY,1812L850SLXXYYYYY,1210L380SLXXYYYYY,2920L125X4X5,2016L133XXYYYYY,0402L020SLXXYYYYY,0402L035SLXXYYYYY,1812L010XXYYYYY,1210L090XXYYYYY,0805L260ULTHXXYYYYY,0805L125?LX4X5,1812L200 XXYYYYY,0603L035X4X5,1206L512SLXXYYYYY,1210L150XXYYYYY,1206L075X4X5,1206L380SLXXYYYYY,2920L612XXYYYYY,0603L003XXYYYYY,2016L030X4X5,2920L616XXYYYYY,1812L124L,1206L075THXXYYYYY,1206L050-C,1206L160X4X5,1206L075SLX4X5,1812L060XXYYYYY,1210L110THXXYYYYY,0603L075SLXXYYYYY,1812L212XXYYYYY,1812L216XXYYYYY,0603L100ULXXYYYYY,1206L110THXXYYYYY,1812L213.2X4X5,0805L175SLXXYYYYY,0805L050THX4X5,1812L050X4X5,1812L500SLXXYYYYY,X1LX2X3X4X5,1206L025/24X4X5,1812L075-C,2016L075XXYYYYY,0805L110XXYYYYY,0805L100X4X5,1210L260SLX4X5,0402L050SLXXYYYYY,1206L110SLXXYYYYY,1206L800SLXXYYYYY,1210L900SLXXYYYY,1812L350SLXXYYYYY,1812L124X4X5,1812L075-CX4X5,1812L190SLX4X5,2920L250X4X5,1812L200-CX4X5,1812L075XXYYYYY,1206L150-C,1206L075THX4X5,1210L030XXYYYYY,1812L900SLXXYYYYY,2920L110XXYYYYY,1206L11OSLXXYYYYY,1206L075-C,1206L150-CX4X5,2016L050,1206L035-CX4X5,1812L750SLXXYYYYY,1210L500SLXXYYYYY,1210L175SLXXYYYYY,1812L160-C,0805L050X4X5,2920L150X4X5,1206L012X4X5,1210L150X4X5,1812L030X4X5,2920L072XXYYYYY,06 03L001XXYYYYY,2920L600SLXXYYYYY,2920L224XXYYYYY,0603L309SLXXYYYYY,1206L012XXYYYYY,1812L312SLXXYYYYY,1812L190SLXXYYYYY,1206L650SLXXYYYYY,1210L050X4X5,2920L050X4X5,1206L110XXYYYYY,0805L260SLTHXXYYYYY,1206L075SLXXYYYYY,2016L260XXYYYYY,1812L050-C,1210L350SLXXYYYYY,1206L212SLXXYYYYY,0805L200SLXXYYYYY,2920L600XXYYYYY,2016L030,2016L150,1206L150SLXXYYYYY,1812L126,1812L125,1210L112XXYYYYY,0805L350SLXXYYYYY,1210L116XXYYYYY,1812L700SLXXYYYYY,1206L024SLXXYYYYY,2920L050,1812L124,1210L150THX4XS,1210L050XXYYYYY,1812L133X4X5,1812L230X4X5,0805L110THXXYYYYY,2920L415XXYYYYY,2016L150XXYYYYY,1812L116,1210L075/24X4X5,1812L115,1812L350SLX4X5,2920L185,1210L075,1812L125-C,2920L060,1210L750SLXXYYYYY,2016L133,1210L300SLXXYYYYY,1206L150SLX4X5,1812L112,2920L624SLXXYYYYY,1812L110,1812L200-C,1812L230,1206L050X4X5,2016L300XXYYYYY,1206L110SLX4X5,1812L268X4X5,0603L036XXYYYYY,1206L400SLXXYYYYY,2920L100X4X5,X1LX2X,1812L450SLXXYYYYY,1812L324SLXXYYYYY,1812L110X4X5,2920L030,0805L010XXYYYYY,2920L330XXYYYYY,2920L150,2016L100,1206L200,2920L2604XXYYYYY,0603L050XXYYYYY,X1LX2X3 SERIES,1812L216,1206L200SLXXYYYYY,0805L1126LXXYYYYY,1812L125X4X5,1210L035XXYYYYY,0603L002XXYYYYY,X1LX2SLXXYYYYY SERIES,1210L175,1812L212,1812L020X4X5,1812L150THX4XS,1206L025-CX4X5,1206L109,1206L260SLXXYYYYY,1210L200SLX4X5,2920L260X4X5,1812L650SLXXYYYYY,2920L300X4X5,2920L400XXYYYYY,2016L200,1812L116X4X5,1206L035X4X5,1206L100,1812L200THXXYYYYYL,1812L150X4X5,0603L150SLXXYYYYY,1206L350SLXXYYYYY,1812L150-CX4X5,0603L050ULXXYYYYY,1812L125XXYYYYY,0805L125SLXXYYYYY,1206L020-CX4X5,06 03L060XXYYYYY,0805L15QSLX4X5,1210L206SLXXYYYYY,1206L700SLXXYYYYY,1206L100X4X5,0805L024SLXXYYYYY,0805L150SLXXYYYYY,1206L030XXYYYYY,2920L075,1210L035X4X5,1210L800SLXXYYYYY,1812L260-CX4X5,1812L260X4X5,1812L300,0603L075ULXXYYYYY,1206L125,1206L175SLXXYYYYY,1812L075X4X5,1206L016,0603L050SLX4X5,1210L020X4X5,0603L020X4X5,1206L050-CX4X5,1812L213.2,1210L600SLXXYYYYY,1812L126X4X5,2920L185X4X5,1206L015,1206L012,2920L315X4X5,1210L110THX4X5,0805L075ULXXYYYYY,X1LX2SLXXYYYYY,1206L060XXYYYYY,0805L050,1206L035-C,1812L212X4X5,1812L115X4X5,2920L324XXYYYYY,0603L020,1206L016X4X5,0805L300SLTHXXYYYYY,1206L110-C,2920L700XXYYYYY,0603L025,1812L110-C,1206L025,1
自恢复保险丝(PTC)的ITRIP电流的意义是什么?
Itrip可以叫做跳变电流,就是指电流超过该值时,电阻会出现大幅增加。其作为自恢复保险丝特有的重要参数,在设计选型时要格外重视。
技术问答 发布时间 : 2017-09-26
【技术】自恢复型PTC帮助降低USB-C的风险
USB-C电路失效时,如何建立安全且可靠的保护机制,减少因为过热而造成使用者受伤或装置损坏。
技术探讨 发布时间 : 2017-04-09
【产品】低电阻小尺寸自恢复PTC 1812L系列,节省逆变器维修成本
Littelfuse 1812L系列自恢复保险丝,符合RoHS标准,无铅,对故障电流作出快速响应,紧凑型设计节省了电路板空间,保护逆变器安全
新产品 发布时间 : 2016-03-30
PTC 参数怎么确定了,比如直流5v10A电流,选多大合适?
PTC选型需要清楚最大工作电压、保持电流Ihold、动作电流Is(又称保护门限电流)等,当高于这个电流值时,将出现阻抗陡然增加现象。可参考如下图示阻抗Z-电流I曲线关系。故,如果以5V/10A电流为例,选择的PTC工作电压需要大于5V,如果10A是正常工作电流,假定以2倍过流,这个需要清楚回路中最大的过电流为多少。选择PTC值时,保证动作电流Is一定要小于回路的最大过电流,以2倍过流预估为20A过流的话,即Is<20A,保持电流Ihold选择等于10A或略小于10A均可。满足这样需求的PTC Littelfuse(力特)有很多,还需要知道封装(贴片式、插件式)、尺寸、工业级还是汽车级等信息。
技术问答 发布时间 : 2018-10-29
想选择一款贴片式(SMD)自恢复保险丝(PTC),要求保持电流0.2A,跳闸电流0.4A,最大容忍电压30Vdc,最大容忍电流10A,请问是否有合适型号推荐?
推荐1210L020WR自恢复保险丝,尺寸为0.12 inch x 0.10 inch(3mm x 0.1 mm),保持电流0.2A,跳闸电流0.4A,最大容忍电压30Vdc,最大容忍电流10A,可满足设计需求。
技术问答 发布时间 : 2017-10-10
【经验】光伏逆变器母线软起方案应用水泥电阻的问题和使用PTC的优势
Littelfuse自恢复保险丝600R160-R1采用领先的自恢复过流保护技术,灵敏度较高,电阻温度系数比金属大10~100倍,能检测出10-6℃的温度变化,额定电压最高600V,应用在光逆变器母线软起电路中起到短路保护,缩短软起时间,抗浪涌电流对电路的损害等作用。
设计经验 发布时间 : 2020-11-18
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可定制温度范围-230℃~1150℃、精度可达±0.1°C;支持NTC传感器、PTC传感器、数字式温度传感器、热电堆温度传感器的额定量程和输出/外形尺寸/工作温度范围等参数定制。
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可定制车规级电感的电流范围0.3~17.9A,尺寸最小1x0.55x0.5mm到最大12.5x12.5x6mm,工作频率100KHz~2MHz,感值范围:0.47uH~4.7mH。符合IATF16949和AECQ-200。SPQ为5K。
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