【选型】TVS瞬态抑制二极管用于车载HUD显示抛负载防护,峰值脉冲功率3000W,ESD等级±30kV
汽车HUD是平视显示器,驾驶者可以减少低头看仪表的频率,降低事故发生的概率,采用车载蓄电池供电,为防止抛负载产生的瞬态电压对后端器件的影响,需要增加保护电路。
针对车载HUD的抛负载防护电路的应用,推荐LITTELFUSE的TVS瞬态抑制二极管TPSMD28CA,双向防护,工作电压28V,最小击穿电压31.1V,反向漏电流2μA,峰值脉冲功率3000W,ESD防护等级满足IEC61000-4-2标准30kV(空气放电)/30kV(接触放电),以下是TPSMD28CA的主要电气参数:
1、乘用车内的HUD显示采用车载蓄电池12V供电,在启动切换电池过程中会产生较高的瞬态电压,需要TVS保护电源总线,推荐Littelfuse的瞬态抑制二极管TPSMD28CA,工作电压28V,根据IEC61000-4-2标准,可以提供高达30kV(空气放电)/30kV(接触放电)的ESD保护,符合IEC61000-4-4标准的EFT防护,可承受3000W(10/1000us)的峰值脉冲功率,完全满足常规车载HUD显示抛负载防护应用需求。
2、车载HUD显示属于汽车前装产品,要求所有器件通过车规认证,TPSMD28CA通过AEC-Q101车规认证,可以满足HUD产品车规的需求;该器件采用DO-214AB的封装,满足无卤和RoHS标准,以下是TPSMD28CA实物图。
图1 TPSMD28CA典型应用电路
综上所述,Littelfuse的TVS瞬态抑制二极管TPSMD28CA具有防静电能力30kV(空气放电)/30kV(接触放电)、脉冲峰值功率3000W、通过AEC-Q101认证的特性,是车载HUD显示抛负载保护电路的优秀选择。
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目录- 过压抑制应用 瞬态电压场景 典型应用 FIT计算方法&钳位波形 选择清单&术语/定义&免责声明 表面贴装型TVS 轴向引线型TVS
型号- LCE9.0A,1.5SMC540CA,SMCJ36CA,SA13CA,P4SMA16A,SMAJ6.0CA,30KPA45A,5KPXXX,SMAJ40CA,SMDJ12A,SMDJ43CA,SMBJ51A,5KP200A,30KPA170CA,P6SMB56A,LCE22A,SMDJ13A,20KPA26CA,P6KE22A,5.0SMDJ170A,P6KE24A,SMDJ78CA,SMDJ11A,30KPA280A,SMF26A,1.5SMC13CA,SA43A,SMCJ14CA,P4KE13CA,5KP75A,SMCJ78A,30KPA300CA,P4SMA530CA,P4SMA18A,SMDJ10A,P6KE18CA,5.0SMDJ85A,5KP78A,AK10-530C,LCE24A,P4SMA16CA,SMCJ100CA,30KPA48A,20KPA48CA,5KP,5KP28CA,P6KE20A,SMBJ300A,5KP30A,SMBJ150CA,1.5KE150A,P4SMA91CA,SMDJ170A,30KPA45CA,SMAJ70A,SA7.0CA,SMAJ75CA,AK3 - 430C,1KSMB9.1A,SMF24A,SMA6L9.0A,SMBJ16CA,SMA6JXXA,3.0SMC30A,SMA6JXXX,SMDJ58A,P6SMB170CA,SA45A,1.5KE220CA,SA48CA,SMCJ30A,P6KE540A,3KP36CA,5.0SMDJ12CA,P6KE27A,SA180A,P6SMB51A,1KSMB160CA,SMA6J5.0A,SA40A,RS232,SMCJ75A,SMA6L40A,SA22CA,P6KEXXXXXX,P6KE8.2CA,1KSMB27A,SMAJ100A,P4SMA300A,SMF22A,3KP100CA,30KPA42A,SMDJ30CA,P6SMB250A,P4SMA160CA,1.5SMC400A,1KSMB130A,P4KE130CA,P4KE180A,5.0SMDJ170CA,SA110CA,30KPA54CA,P4SMA82CA,P4KE250CA,15KPA75CA,30KPA150A,SMDJ54A,30KPA43A,3.0SMC33A,30KPA198A,AK6-170C,SMDJ160CA,1.5KE7.5A,20KPA180A,3KP14CA,SMA6L85A,SMBJ400CA,P6SMB120A,LCE20A,P6SMB51CA,3KP220CA,P4KE22CA,1.5SMC300CA,AK3-058C,P6SMB300CA,SMCJ220CA,SMF20A,15KPA40CA,1.5SMC530A,P6SMB8.2A,15KPA70A,5KP15CA,1.5KE51A,1KSMB30CA,P6KE100A,1.5SMC39CA,P4SMA56A,P6SMB,V33ZA70PX,P6SMB540CA,1.5KE36CA,SA70CA,SLD,15KPA75A,P6KE36CA,15KPA100A,5KP36A,P6SMB16A,P6SMB300A,20KPA280CA,1KSMB22A,30KPA,5KP200CA,1KSMB43CA,5.0SMDJ130A,SMAJ18CA,SA17CA,1.5KE170CA,20KPA56A,5KP90CA,3KP24A,SMF,SMDJ51A,3KP45CA,5KP190CA,P4SMA170A,04611.25ER,1.5SMC47A,P6SMB15A,SMAJ250CA,SMCJ18CA,P4SMA10A,3KP58CA,1.5KE56A,20KPA160CA,3KP190A,5.0SMDJ30CA,1.5SMC440A,SMDJ120CA,P6SMB91CA,AK10 - 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