【选型】为RS232串口数据线(TxD、RxD、GND)通信选择合适的TVS管
在轨道交通地铁门极驱动控制器上,有用到RS232串口通信, RS232通信一般由三条数据线组成,即TxD、RxD和GND,其中RS232采用负逻辑电平,即-15V~-3V代表逻辑“1”,+3V~+5V代表逻辑“0”。为保证RS232串口数据通信免受ESD影响,一般需要在TxD与GND、RxD与GND间加入一颗TVS管做ESD防护设计,那么,此TVS管的选型一般需要考虑哪些因素呢?
1、 工作电压的考量:TVS反向工作电压≥15V;
2、 具有高的抗ESD能力,至少通过静电放电:IEC IEC61000-4-2 ±8kV Contact/±15kV Air测试标准;
3、 具有较低的结电容;
4、 具有更小的尺寸
5、 更低的单价成本
针对如上的设计需求,有两种方案可推荐:
1、 高性能版:推荐Littelfuse(力特)双向TVS管SPHV15-01ETG-C,采用表贴SOD882封装(0402),最大反向工作电压15V,可安全吸收超出IEC61000-4-2国际标准中最高值的反复性ESD震击(±30kV),而不会引起性能下降,并具有最高仅24pF的二极管结电容特性参数,典型电性参数参考如下图1所示:
图1:LITTELFUSE(力特)双向TVS管SPHV15-01ETG-C典型电性参数对照表
推荐littelfuse(力特)双向TVS管SPHV15-01ETG-C理由如下:
1)、具有更高的抗ESD能力,有通过IEC IEC61000-4-2 最低±30kV Contact/Air ESD测试标准,可以提供高可靠性的ESD防护;
2)、具有最大仅22V的低钳位电压能力,可实现更安全的ESD电压防护;
2)、具有最高仅24pF低结电容电性参数,对低速率数据传输的RS232数据通信无影响;
3)、世强大批量备货,可快速支持样品和后续量产服务;
2、 低成本版:推荐高特双向TVS管GSD15C,采用表贴SOD-323封装,最大反向工作电压15V,通过IEC IEC61000-4-2 ±8kV Contact/±15kV Air测试标准,峰值脉冲功率达350W,最大结电容为68pF,典型电性参数参考如下图2所示:
图2:高特双向TVS管GSD15C典型电性参数对照表
推荐高特双向TVS管GSD15C理由如下:
1)、有通过IEC IEC61000-4-2 最低±8kV Contact/±15kV Air ESD测试标准,可以提供高可靠性的ESD防护;
2)、具有350W更高峰值脉冲功率,可以承受更高的峰值脉冲电流冲击;
3)、具有-55℃~150℃更宽的工作温度范围,可适用于极端恶劣的低温环境下工作;
4)、高特作为国产的优秀保护器件供应商,相比欧美日品牌的保护器件,具有更低的成本。
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李文加油 Lv7. 资深专家 2020-12-02哪有规格书啊
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【方案】100KW双向储能优选器件方案
描述- 对业内100KW双向储能产品而言,主功率电路多采用了六管IGBT搭建的三相应用拓扑架构。因100KW双向储能选择主功率架构器件时,规格需求通常是1200V/600A(包含裕量),驱动开关频率一般在20kHz以内,考虑到体内二极管散热等因数,功率模块一般会选用三个半桥模块来搭建六管架构。
型号- SMCJ36CA,TOP267VG,SMBJ,SMAJ6.0CA,92MLSC A 24X18 H1/059AL2 0030+-0007/DI,SMBJ8.5CA,5KP200A,SMBJ51A,SMBJ75A,SMBJ70CA,TOP270EG,0324030.,5KP40A,5KP64A,SMAJ,SMBJ17CA,SMBJ40A,SMBJ64A,0324.375,5KP18CA,5KP51A,SMCJ14CA,5KP75A,SMBJ160CA,TOP269KG-TL,0314.375MXP,5KP8.5CA,SMDJ,SMBJ85A,SMBJ28CA,5KP160CA,5KP78A,SMAJ8.0A,TOP271EG,5KP,5KP28CA,SMBJ300A,0324040.,5KP30A,TOP268VG,5KP54A,SMBJ150CA,92ML 104/83 24X18,92MLSC A 24X18 H2/059AL2 0030+-0007/DI,SMCJ,SMDJ33CA,SMF12A,SMF5.0A,SMF36A,SMBJ16CA,0324030.MXP,5KP70CA,5KP17CA,SMCJ30A,TOP265VG,SMDJ20A,SMF11A,5KP180CA,SMCJ400A,MLX91208LDC-CAH-000-RE,5KP60A,SMBJ170CA,TOP271KG,0324010.,SMBJ400A,SMF10A,SMCJ8.0CA,SMBJ60A,92ML 1080/85 24X18,SMBJ15CA,SMCJ40A,TOP265KG-TL,5KP16CA,SMCJ16CA,SMCJ64A,TOP266VG,92ML 104/88 12X18,MLX91208LDC-CAH-000-SP,SMBJ26CA,SMBJ400CA,MLX91208,5KP26CA,SMBJ90CA,0324020.,92ML A 24X18 HL/HL 0400+-004/DI,SMBJ14CA,SMBJ70A,MLX91208LDC-CAH-000-TU,5KP170CA,SID1182K,5KP15CA,92G0040CVVAKP42,5KP85A,SMDJ7.0A,0324015.,92ML0488-50K042,SMBJ48CA,5KP12A,5KP36A,5KP24A,SMDJ36CA,5KP48A,5KP48CA,5KP200CA,SMBJ130CA,SMAJ18CA,5KP6.5CA,SMCJ28CA,5KP90CA,SMBJ13CA,SMF54A,SMF,5KP190CA,SMDJ51A,SMBJ36CA,5KP11A,SMAJ250CA,0314012.MXP,5KP14CA,MLX91208LDC-CAL-RE,SMBJ24CA,SMCJ200A,5KP14A,5KP26A,5KP24CA,92ML PREPREG 104/88 12.00X18.00,TOP270KG,TOPSWITCH-JX,0314040.MXP,SMBJ90A,0314015.MXP,SMBJ12CA,0314.375,SMBJ58CA,5KP13A,SMF3.3,SMBJ188CA,0324001.,SMBJ350CA,0324025.,SMCJ70A,5KP13CA,5KP36CA,5KP8.0CA,TOP264-271,SMBJ5.0A,SID11X2,SMCJ250CA,TOP269EG,SMBJ180A,SMCJ440A,SMAJ5.0CA,TOP267KG-TL,314,5KP20A,TOP270KG-TL,0324040.MXP,SMDJ11CA,5KP100CA,SMBJ11CA,SMDJ180A,5KP7.5CA,324,92G0600CWWAKP42,5KP190A,MLX91208LDC-CAL-TU,5KP210CA,92ML0488-50K098,SMDJ5.0A,5KP12CA,5KP58CA,5KP43A,SID1182,SMCJ5.0CA,SMBJ22CA,SMBJ45CA,0314040.,92ML A 24X18 H2/H2 0600+-005/DI,5KP22A,5KP58A,SMBJ170A,SMCJ220A,SMBJ10CA,5KP22CA,5KP45CA,5KP10A,5KP5.0A,0324015.HXP,SMBJ6.0A,92G0080CWAKP42,SMBJ33CA,SMBJ250CA,5KP45A,5KP33A,5KP9.0CA,5KP180A,92MLSC B 24X18 H4/059AL2 0060+-001/DI,5KP11CA,SMBJ5.0CA,5KP6.0A,SMBJ220CA,5KP110CA,92G0400CWWAKP42,TOP267EG,SMBJ160A,SMAJ16A,5KP6.0CA,92G0600CWWAWP42,92G0600CTTAKP42,TOP270VG,SMBJ78CA,TOP269KG,SMAJ48CA,5KP10CA,SMBJ43CA,TOP266EG,MLX91208LDC-CAH-TU,5KP170A,SMBJ20CA,5KP33CA,SMCJ7.5A,SMBJ7.0A,TOP268EG,5KP20CA,5KP43CA,SMBJ54CA,SMBJ18A,SI86XXISO-KIT,5KP220CA,SMAJ26A,SMBJ150A,92ML,TOP271VG,0314015.,A0-VP122PA600M7-L759F70,SMBJ6.0CA,SI86XX,5KP160A,SMCJ350A,SMBJ100CA,SMAJ15A,5KP78CA,MLX91208LDC-CAV-000-RE,SMBJ6.5A,5KP7.0CA,5KP16A,SMBJ16A,SMCJ250A,SMAJ180CA,SMBJ30CA,SMDJ15CA,5KP28A,SMBJ28A,5KP6.5A,SMBJ188A,SMCJ64CA,5KP7.0A,SMBJ8.0A,92MLHF 0104 RC:88% 24.00X18.00,5KP150A,MLX91208LDC-CAV-000-SP,SMBJ440CA,0324030.HXP,TOP264EG,5KP54CA,SMBJ64CA,0324020.MXP,5KP15A,TOP267KG,SMBJ17A,SMAJ5.0A,SMBJ120CA,SMBJ250A,SI86XXIS0-KIT,0314012.,5KP8.0A,TOP266,5KP250A,TOP268,TOP267,TOP264,5KP64CA,SMBJ14A,SMBJ75CA,92G0080CWWAKP42,SMBJ26A,5KP18A,SMBJ110CA,SMBJ7.0CA,SMBJ130A,0324010.MXP,TOP271,TOP270,SMCJ6.5A,SMBJ7.5A,5KP120CA,TOP264KG-TL,SMBJ40CA,5KP30CA,TOP265EG,SMBJ15A,TOP269,5KP17A,TOP268KG,0324025.MXP,A0-VP122PA600M7-L759F70T,92G0400CTTAKP42,SMCJ30CA,SMBJ9.0A,SMCJ16A,SMBJ12A,SMBJ51CA,5KP40CA,SMBJ36A,SMBJ24A,SMAJ6.0A,SMBJ48A,SMAJ10CA,SMBJ350A,SMBJ120A,SMAJ20A,SMBJ6.5CA,5KP130A,SMDJ51CA,5KP75CA,SMBJ13A,SMBJ85CA,TOP265KG,5KP7.5A,SMAJ33A,5KP250CA,SMBJ8.0CA,SMCJ6.0A,MLX91208LDC-CAV-000-TU,SMBJ8.5A,5KP130CA,SMBJ22A,5KP85CA,SMBJ58A,5KP70A,SMBJ110A,5KP8.5A,SMBJ300CA,VINCODUAL E3,5KP9.0A,5KP120A,SMAJ170A,SMBJ10A,5KP51CA,SMBJ11A,TOP266KG,SMBJ220A,SMCJ6.5CA,SMBJ180CA,SMCJ48A,SMCJ36A,SMCJ180A,TOP266KG-TL,SMBJ43A,5KP220A,MLX91208LDC-CAL-000-RE,92ML SC B 24X18 H3/059AL2 0.006+-0. 001,SMBJ7.5CA,SMBJ100A,TOP269VG,92ML A 24X18 H2/H2 0200+-0025/DI,SMAJ40A,92G0080CTTAKP42,SMAJ30CA,5KP5.0CA,5KP110A,SMBJ20A,5KP150CA,SMBJ45A,SMBJ33A,SMBJ9.0CA,SMDJ16A,SMBJ60CA,TOP268KG-TL,SMBJ440A,SMCJ12CA,SMCJ33CA,SMCJ58CA,5KP90A,SMBJ200CA,5KP210A,MLX91208LDC-CAL-000-SP,SMBJ78A,5KP60CA,0324001.MXP,TOP271KG-TL,0324010.HXP,SMCJ33A,MLX91208LDC-CAL-000-TU,TPCM780,SMCJ5.0A,SMBJ18CA,SMBJ30A,5KP100A,SMAJ150A,SMBJ54A,92ML PREPREG 104/88 24. 00X18. 00,MLX91208LDC-CAH-RE,SMBJ200A,0324.375HXP,TOP264KG,SMCJ22A
【产品】防雷击的TVS二极管,保障CAN总线通信安全
内含两个双向TVS管,泄露电流低至0.1uA,钳位电压极低。
LITTELFUSE General Purpose ESD Protection TVS Diode Array选型表
Littlfuse瞬态抑制二极管阵列可保护电子设备免受雷击和静电放电(ESD)等快速瞬态电压的破坏,为输入/输出接口和数字与模拟信号线提供理想的保护方案。
产品型号
|
品类
|
AEC-Q101 Qualified
|
Standoff Voltage (V)
|
ILeak (μA)
|
ESD Contact (kV)
|
ESD Air (kV)
|
Lightning Immunity (8x20μs) (A)
|
Clamp Voltage
|
CI/OTYP (pF)
|
Polarity
|
Channels
|
MIN VBR@IT (V)
|
Operating Temperature(℃)
|
Package
|
SC1006-01LTG
|
TVS Diode Arrays
|
No
|
6
|
0.5
|
±30
|
±30
|
5
|
8.3V@1A
|
25
|
Unidirectional
|
1
|
N/A
|
-40° to 125°C
|
SOD523
|
选型表 - LITTELFUSE 立即选型
高特ESD Protection Device选型表
高特ESD Protection Device,符合IEC61000-4-2 ESD Contact±8KV, Air ±15KV标准;符合IEC61000-4-4FET 40A, 5/50ns标准;符合IEC61000-4-5 Lightning 24A, 8/20us标准;多工作电压段供选择:2.5V-36V;可提供单路、双路、四路、五路及六路保护产品;超低电容,最低电容达0.2pF;超低反向漏电流,最低反向漏电流1nA;全线采用微型贴片封装外形,最小外形为DFN0603(0.6*0.3*0.3mm);全线产品符合RoHS、无卤、Reach标准。
产品型号
|
品类
|
PPP(W)
|
VRWM(V)
|
VBR(V)
|
VC(V)
|
IPP(A)
|
IR(uA)
|
Cj(pF)
|
Package
|
GESD0301BU
|
ESD Protection Device
|
100
|
3.3
|
4.2
|
25
|
4
|
0.1
|
0.25
|
DFN1006
|
选型表 - 高特 立即选型
请问IGBT,VGE最大±20V,驱动电压15V,我是应该选择15V的VC=24.4的,还是VC=20的SMBJ12CA,选型时应该以哪个参数为准呢?
您好,在驱动电压为15V情况下,标称12V的会使得TVS处于触发状态,而标称15V的处于临界值,会因电源供电不稳,导致TVS管触发;如果驱动电压为15V,建议采用标称VR=16V的TVS管,可选用力特的双向TVS 管SMBJ16CA,器件资料:Littelfuse(力特) TVS二极管SMBJ数据手册;设计可参考以下链接:【经验】双向TVS管在IGBT门极驱动电路中的功能分析及选型
【选型】满足工业自动化、汽车电子控制系统领域需求的LIN总线ESD防护TVS选型推荐,可兼容12/24V电源系统
为保证LIN总线免受ESD静电影响导致相关敏感电子器件受损,一般需要对LIN总线做ESD防护,推荐选择PANJIT(强茂)双向非对称TVS管PJEC2415VM1WS-AU实现,过AEC-Q101认证;推荐littelfuse(力特)单向TVS管SD15C-01FTG和SD24C-01FTG搭配使用实现;推荐国产高特双向非对称TVS管GESD1524实现,主推用于工业自动化领域。
【产品】采用SOD-323小型封装的静电防护二极管GSD15C,工作电压15V,适用于便携式仪表、外设寻呼机等
高特微电子的静电防护二极管(ESD防护器件)GSD15C,设计用于保护寄生敏感系统免受过电压和过电流瞬态事件。其工作电压为15V,IPP为10A,钳位电压最低可达38V,工作电压下可达1μA的超低漏电电流。
电子商城
现货市场
服务
整体外形尺寸小至0.6*0.3*0.3mm (DFN0603),工作电压范围覆盖2.5V~36V,电容值低至0.2pF,浪涌能力最高可达240安培,静电等级可达空气放电、接触放电±30KV。提供免费浪涌测试仪、静电测试仪测试。
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可定制单位/双位/三位/四位LED数码管的尺寸/位数/发光颜色等性能参数,每段亮度0.8~30mcd,主波长470~640nm,电压2~10.2V。
最小起订量: 1000 提交需求>
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