硕凯电子针对多轴飞行器的浪涌和静电防护提出解决方案
多轴飞行器因其结构简单,组装方便,已经越来越接近大家的生活。随着MEMS传感器、微控制器、电机和电池技术的发展和普及,多轴飞行器已经成为微小型无人机中的新锐力量。直到今天,多轴飞行器已经应用到各个领域,如军事应用、公安追捕、灾害搜救、地理调查、输电线巡查、电影拍摄等。
现实生活中,用户使用多轴飞行器时,经常会出现多轴飞行器莫名其妙的损坏,因此多轴飞行器的EMC可靠性必须得到高度重视。针对这些问题,硕凯电子已经提出相应的浪涌和静电解决方案。
一、电源部分热插拔浪涌防护方案
多轴飞行器一般采用12V左右的电池供电,电流比较大,达到几安培,当12V电源接口进行热插拔时,会产生比较大的浪涌电流,即CDE事件。浪涌电流经常将电源管理IC击穿,因此这里需要加入瞬态抑制二极管进行瞬态箝位,起到保护后端电源管理IC的作用。
二、电机部分反向电动势防护方案
多轴飞行器通过频繁控制多个电机的转速和正反转来实现前进、后退、起飞、降落等功能,由于电机的正反转或者加减速容易产生反向电动势或者瞬间过压等现象,很容易将电机的驱动器件MOS击穿,因此这里需要加入瞬态抑制二极管进行瞬态箝位,起到保护MOS的作用。
三、USB等外部接口的静电防护方案
多轴飞行器由于经常与人手进行接触,很容易产生静电放电现象,当天气比较干燥时,静电电压会更高,因此多轴飞行器需要进行静电抗扰度测试,需符合IEC61000-4-2标准。静电测试时,需要对裸露的金属接口进行接触放电,其他部分进行空气放电测试,因此对于多轴飞行器的USB接口、SD卡接口、GPS天线接口、按键等都需要加入静电保护器件ESD进行静电防护。
1.USB口防护方案
2.GPS天线接口防护方案
3.SD卡接口防护方案
使用SRV05-4集成芯片,它由8支控向二极管构成两个“桥式”电路,共享了一支“雪崩二极管”,此种“桥式”电路对“正”的ESD经过导向由雪崩二极管进行箝位,而对“负”的ESD由控向二极管直接箝位,是非常好的ESD防护方案。
四、TVS/ESD选型
需要注意以下几点:
1、 断态电压≥电池电压的1.1倍以上为宜,否则TVS/ESD容易损坏。
2、 尽量选用残压值低的器件,能起到比较好的浪涌保护效果。
3、 高速信号接口选用低结电容值产品,否则信号不能正常通信。
4、 直流电源口选用单向二极管效果更佳。
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本文由宝丁转载自硕凯电子,原文标题为:深度解析多轴飞行器浪涌和静电解决方案,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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SERIES,SC2E6-600LSMD,SC1812-420CSMD,P6SMB12A,TH8D20CA,SCF012-1206R,32D911K,P4SMA13A,SC2E6-420LSMD,P6KE180CA,P6SMB10A,SCGB2012S301HPF,SM6S15A,P4SMA47CA,SCML2012H2R2M05BP,P6SMB11A,KA-190,25D SERIES,P6SMB100CA,5.0SMDJ78CA,SC250-650,SCWL201610G-1R0ML,15KPA18CA,20D,P4KE400A,SCML2012H1R0MBE,SM6S18A,RCF160-1812,PXXXXTB SERIES,1.5KE10CA,SCF035-0805R,SCHB1608W241EPF,SC1206-90ASMD,34S850K/40,SMF60A,P4SMA15A,SCGB2012S102FPF,15KPA30A,SM6S17A,P6KE27CA,30KPA84A,SCB-141N,PXXXXEC,5KP33A,PXXXXEA,P6SMB82CA,PXXXXEB,15KPA180CA,SC2E8-150H,1.5SMC500CA,SC2E8-150M,5KP11CA,30KPA36CA,P4KE6.8CA,20KPA52CA,P6SMB47CA,1.5SMC250CA,SCHB1608-W SERIES,SCPB1005S100NPF,TH8S15A,SC3E5-75LSMD,P6SMB220CA,3KP140A,SC2E5-470L,SMDJ200CA,SMF70A,SMDJ190CA,15KPA24A,30KPA90A,1.5KE380CA,SC250-145T,3KP64A,P4KE20A,SMAJ48CA,SMBJ43CA,TPSMAJ SERIES,SCWL201610G-R47ML,53D SERIES,34S140K/40,SMCJ7.5A,SMAJ400A,SC1812-400CSMD+,30KPA71CA,SMF19CA,SA90A,30KPA102A,SMBJ18A,SCF035-1210R,1.5SMC75CA,25D,SMAJ300CA,P6KE220CA,SA40CA,SCF020-60-1812R,SCB-501M,15KPA22A,SC1812-350CSMD,TH8S16A,KA-170,SMBJ19A,SCGB3216S202ETF,20KPA96CA,SM6S20A,3KP9.0CA,S61089,SM6S,P6KE100CA,SMBJ16A,20KPA240CA,SMBJ30CA,P6SMB SERIES,SCWL252010H SERIES,5KP28A,SCGB1608H121EPF,30KPA108A,SMF110A,15KPA28A,SMAJ8.5CA,SC1210-420BSMD,SMAJ180A,P4KE100A,SC135-650,SCC-471M,SMBJ17A,SMF85CA,SMBJ120CA,5.0SMDJ220A,SM5S,SM8E,SM8S16CA,SM6S22A,20KPA120CA,5KP8.0A,1.5SMC10A,SC2E5-3500D,SC3E6-230M,3KP75CA,SMBJ14A,SM8S,P6SMB18A,SMDJ16CA,SCGB1608S221FPF,SMBJ130A,1.5SMC130CA,5.0SMDJ350A,SCPB1608S601LPF,15KPA26A,15KPA48CA,SMDJ440CA,34S350K/40,5KP120CA,SCGB1005S200FPF,SA100A,SMBJ15A,SCF125-2920R,SMAJ170CA,KA-133,SCWL252010G-R47ML,15KPA180A,30KPA260CA,SMBJ12A,SMAJ6.0A,P6KE62CA,SC3E8-150HP,SC250-1000S,TPSMEJ,SC3E8-150HM,1.5SMC91A,SA7.5CA,5.0SMDJ78A,SMCJ7.0A,SMDJ51CA,15KPA22CA,5.0SMDJ48CA,SMBJ13A,SCBE-471M,SC2E8-150MSMD,TPSMDJ,P6KE75A,P4SMA220A,KB-380,34S440K/65D,SMCJ150A,20KPA172A,SC1210-350BSMD,SC1812-90CSMD,TPSMCJ,SA6.0A,SCF200-1812R,5KP8.5A,SMAJ78A,KA-100,SC3E8-800HM,5KP120A,SC3E8-800HP,SMBJ10A,SMBJ11A,P4KE27A,5.0SMDJ400A,SMAJ22CA,SC3E5-350LM,TPSMBJ,SMCJ6.5CA,8.0SMDJ22CA,SMAJ75A,SMCJ36A,SA190CA,SCPB1005S121MPF,SM4KBF,5.0SMDJ75A,P4SMA9.1A,TH8S SERIES,SMF54CA,SC30-600,P4SMA91A,TPSMAJ,1.5KE100A,SC2E8-250MSMD,P6SMB170A,SMCJ45CA,3KP60A,30KPA84CA,SC3E5-470LM,P6KE75CA,TH8D28CA,P4KE24A,SCF030-1812R,SCPB3216S121WTF,SC16-600,SCA SERIES,SCGB1005S600FPF,SC3E5-150L,SMAJ6.5A,SMBJ440A,SMCJ58CA,SMDJ7.5CA,5.0SMDJ17CA,1.5KE18CA,5KP60CA,5.0SMDJ70CA,SMCJ33A,P4SMA350A,RCF260-1812R,SCGB3216S700KTF,SCF0805,P4KE22A,P4SMA6.8CA,10D SERIES,P4KE6.8A,SA6.5A,5.0SMDJ33CA,SA36CA,SMBJ,SMDJ20CA,SMF6.0A,P4SMA15CA,3KP6.0CA,SMDJ160A,3KP26CA,SCWL201610H-R47ML,SMAJ60A,SMAJ,SC2E8-75ML,5.0SMDJ70A,5.0SMDJ SERIES,SMF22CA,SMDJ48A,SMCJ7.0CA,SMCJ20A,P4KE36CA,SCF260-13-1812,P6KE200A,SMDJ,20KPA36CA,SC1206-470ASMD,SMBJ85A,1.5KE380A,P4KE120CA,P4SMA400CA,SCPB1608S600QPF,SC2K8-400SMD,SMF180A,SM8E43A,SMCJ,SM8S22CA,SMDJ33CA,SMDJ45A,1.5SMC8.2CA,SCC-401M,SMCJ13CA,SCB-201M,TH8S16CA,PXXXXSB SERIES,SMDJ64CA,3KP13CA,5KP180CA,SCWL252010G SERIES,1.5KE62A,20KPA26A,SCF020-0805R,20KPA104CA,PXXXXLA SERIES,SMCJ26CA,SA75A,TH8D,20KPA24A,TH8S,SMDJ43A,1.5SMC91CA,SCHB1608W601EPF,1.5SMC180CA,20KPA300CA,SCPB-S SERIES,1.5KE250A,SCF012-0603R,SA78A,53D361K,SMAJ85CA,P4SMA200A,SA190A,K1-076,1.5KE8.2A,2
硕凯电子 瞬态抑制二极管选型表
TVS(瞬态抑制二极管),半导体材质,用于浪涌和静电防护,在小浪涌防护中广泛使用,速度快,封装小,残压低
产品型号
|
品类
|
Uni/Bi
|
Marking
|
VRWM(V)
|
VBR(V)@IT(Min.)
|
VBR(V)@IT(Max.)
|
IT(mA)
|
VC@IPP(V)
|
IPP(A)
|
IR@VRWM(uA)
|
PPPM(W)
|
Package
|
SMF5.0A
|
瞬态抑制二极管
|
Uni
|
FE
|
5V
|
6.4V
|
7V
|
10mA
|
9.2V
|
21.74A
|
400uA
|
200W
|
SOD-123
|
选型表 - 硕凯电子 立即选型
【选型】国产TVS瞬态抑制二极管用于POE摄像头保护电路设计,ESD等级±15kV,峰值脉冲功率1500W
针对摄像头POE交换芯片的ESD防护应用,推荐国产硕凯电子的TVS瞬态抑制二极管SMCJ51CA,双向防护,工作电压51V,最小击穿电压56.7V,反向漏电流5μA,峰值脉冲功率1500W,ESD防护等级满足IEC61000-4-2标准。
器件选型 发布时间 : 2023-02-11
硕凯电子SM2KBF系列TVS参数详解及防护应用
硕凯电子推出的SM2KBF系列TVS是专用于低压直流电源的浪涌防护器件, 该器件采用的是SMBF小封装,相对同封装体积的普通系列TVS功率大能做到更大,双向无极性区分,综合防护能力要比同体积产品高得多,可有效降低设计成本。
产品 发布时间 : 2024-10-25
【经验】如何区分瞬态抑制二极管的方向
TVS二极管在测试前要先区分其单双向。虽然最终的作用是一样的,但是单双向TVS二极管的适用范围还是有差别的,双向TVS管适用于交流电路,单向TVS管一般用于直流电路。本文的目的是教大家如何区分瞬态抑制二极管的方向。
设计经验 发布时间 : 2019-03-15
车载24V系统过ISO 16750-2 Test B (174V 52V 8Ω 350ms 10c) 和IEC61000-4-5 1.2/50us&8/20us(2kV ±5c)使用什么型号的TVS合适?
推荐使用硕凯的瞬态抑制二极管SM2KBF40CA,其主要特点: 1.电压范围从6.5V~40V。 2.能过ISO 16750-2 Test B (174V 52V 8Ω 350ms 10c)。 3.能过1.2/50us&8/20us组合波2KV/1KA。 4.钳位电压低。 5.反向漏电流小。
技术问答 发布时间 : 2019-06-11
基于硕凯TVS SMBJ24CA的车载LED电源静电整改案例分析
本文介绍车载LED电源静电整改分析。对于弱电产品有金属外壳的产品最好是把外壳接到PCB的工作地,或者PCB有大地的外壳接到PCB的大地。对于主IC不能承受很大的工作电压时选用TVS尽量选用钳位电压低的,比如SMBJ24CA。
设计经验 发布时间 : 2024-10-25
【应用】硕凯电子双向TVS SMAJ12CA助力小基站天线防雷设计,可承受400W峰值脉冲功率
某种有源天线的防雷击设计,其中需要用到一款TVS(瞬态电压抑制)二极管。本文根据客户需求推荐硕凯电子推出的双向TVS SMAJ12CA,最大钳位电压为19.9V,耐受的瞬间峰值功率可达400W,耐受的反向浪涌电流达到了20.1A。
应用方案 发布时间 : 2023-05-24
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。
应用方案 发布时间 : 2024-10-25
电子商城
品牌:硕凯电子
品类:ESD Protection Transient Voltage Suppressors Array
价格:¥0.5000
现货: 0
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测试等级:空气放电30KV±5%;接触放电30KV±5%,适用标准:GB/T 17626.2、IEC61000-4-2、ISO10605、GB/T 19951;给用户产品出电路保护设计方案建议及整改。点击预约,支持到场/视频直播测试,资深专家全程指导。
实验室地址: 深圳/上海 提交需求>
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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