【应用】顺络电子SDVL-KA系列压敏电阻在AC LED照明的过压过流防护方案
LED光源作为绿色、节能、省电、长寿命的第四代照明灯具被广泛使用,目前LED光源是低电压(2-3.6V)、大电流(200-1500mA)工作的半导体器件,必须提供合适的直流电才能正常发光,由于我们日常照明使用的电源是高压交流(AC 100~230V),所以必须使用降压技术来获得较低的电压,常用的是变压器或开关电源降压,将交流(AC)变换成直流(DC),再变换成直流恒流源,才能促使LED光源发光。然而,DC LED在交流、直流之间转换时约有15%~30%的电力损耗,系统效率很难做到90%以上,而且对于空间十分有限的LED灯具,很难安置降压模块(变压器+整流+恒流源),如果能用交流(AC)直接驱动LED光源发光,系统应用技术方案将大大简化,效率也可轻松提升。
技术背景
2005年韩国首尔半导体推出全球第一款用交流市电直接驱动的AC LED,我国台湾地区的工业技术研究院很快实现了AC LED的产业化生产,并在芯片技术和封装技术上有重大创新,发明了“低热阻立体导热插拔封装技术”,于2008年9月,获得美国R&D 100 Awards国际大奖。AC LED的发明应用,颠覆了传统DC LED的照明应用方案,是LED发展史上的一次重大突破。
传统LED都是以直流电作为驱动,称为DC LED。AC LED 是以交流电作为驱动,不必进行AC-DC转换,也不需要DC-DC降压式恒流源驱动电路,在照明灯具设计上,体积及重量都能较一般DC LED灯具更有优势。以下分别列出了两者驱动电路的框图:
传统的直流LED驱动电路框图
交流LED驱动电路框图
另外,在LED驱动电源电路中势必免不了受到线路浪涌的影响,此时就需要一个合适的浪涌防护方案。
顺络电子针对LED照明的浪涌防护方案
(一) 顺络电子的浪涌防护元件有以下几类:
过电流防护原理
(二) LED 照明的过压过流防护方案
①DC LED保护线路设计:
AC 端必须有滤波电容、变压器,过压防护一般使用引线式压敏电阻。
② AC LED保护线路设计
保护线路取消了滤波电容、变压器,但必须设计压敏电阻,普遍使用片式压敏电阻。
AC LED因电路简单,成本很低,体积小,将是LED照明设计的发展方向。
顺络电子的SDVL-KA系列压敏电阻
基于交流电源线路用压敏电阻片式化、小型化的趋势,SDVL8063/SDVL10080KA系列可应用于110VAC、220VAC交流电源端,进行过电压防护,适用于对整机产品高度有限制的领域,替代部分插件压敏电阻。
●SDVL-KA系列选用交流老化特性优良的材料,通流能力、限制电压特性好;
●SDVL-KA系列采用独特焊接技术制作端头,保证了产品性能及可靠性;
●SDVL-KA系列采用注塑成型工艺,塑胶壳保护提高环境可靠性;
●以上所示的最大交流工作电压范围内,片式产品的耐受脉冲电流优于引线式产品;
●片式压敏电阻的高度远小于引线式,故在整机空间有限制时优先选用,如超薄适配器等。
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本文由奶爸工程师转载自顺络,原文标题为:AC LED照明的过压过流防护方案,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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Circuit Protection Products Selection Guide
型号- PXXX0SAMC,LS2406ERQ23,1812L,LVR,SPHV,30KPA-HR,456SE,456SD,15KPA,SP33R6-04UTG,345 SERIES,1210,ITV9550 30A,AQ24CANFD,SDP,AC,LS2406ERQ33,PXXX2AC,RUEF110S,MICROSMDCH,562 SERIES,AQ1003-01ETG,SDPXXX0T023G5,150603,800,801,802,804,806,807,BA,808,BB,PGB2,PGB1,P4SMA,TSM600,PTF070,MICROASMD,SC7520-08UTG,SC1103C-01UTG,PTF078,PTF077,559 SERIES,LS0504EVT233,PTF075,AQXXC-01LTG,810,811,356 SERIES,5KP,813,814,FB65,FB66,CA,SC7538-08UTG,CG,CH,PTF080,286677,PICOASMDCH,PXXX2AX,MINIASMDC,SMF4L,121004,B61089BDR,282008,121001,282007,820,121003,AK10-Y,821,121002,282002,823,824,282001,FB55,DA,828,DB,FB58,NANOASMDCH,820-20,830,831,834,835,PLED ULTRA LOW,101001,3453,3452,605,606,RKEF,607,PXXX2ACMC,LS12052BD33,AGRF,PTF0080M,B61089QDR,RUEF135V,850,851,852,3455,853,AHEF100,60R,617,618,GTCX36-XXXM-R05,FEMTOSMD,PXXX0Q12X,860,862,HA,PICOASMD,HB34,GTCX36-XXXM-R10,2920L,SP8008,AQ4337-01ETG,155 SERIES,P6SMB,803-01 SERIES,SLD,810 SERIES,870,PTF015,874,875,876,342 SERIES,877,5.0SMDJXXS-HRA,348 SERIES,30KPA,SM7,SM24CANB,SMCG-HR,TSV250,FC09B1606NL-0,SMD,SMF,TPSMB-VR,881,342006 W,35408 SERIES,OMN002,400,OMN004,885,35406 SERIES,881 SERIES,OMN006,646,405,647,V20H275AUTO,407,649,RXEF,101010,52100001009,AQ24CANA,AQHVXX-01LTG,656,101002,PXXXXDF,658,101003,5KPA-HR,5.0SMDJ,570 SERIES,AQ3530-01FTG,B-SERIES,662,1206L400SLWR,663,422,664,665,LA,SMBLCE-HR,L-SERIES,AQHVXX-01LTG-C,PTF050,SC1105-01UTG,PTF055,G-SERIES,435,437,438,ITV5432,A-SERIES,870 SERIES,PTF065,440,RGEF,437A,441,SP1103C,443,202,203,254 121,445,446,688,447,3453 SERIES,448,449,ULTRAMOV™ 25S,208,209,TR600,04450001,PTF030,438A,451,SRP,452,453,454,TSM250,PTF035,AUMOV®,213,456,215,821 SERIES,458,216,LV ULTRAMOV,459,217,218,SP3401,SP3400,AQ3522-01FTG,P6KE,TPSMC,FHN26G2,TPSMB,PTF040,TPSMD,LS2405IDD23,PTF045,460,461,5KPA-HRA,462,220,464,465,466,224,467,225,576 SERIES,468,254 101,229,BXXX0CX,SL0902A,102080,470,BXXX1UX,471,472,230,473,232,233,501A,476,234,235,477,MIDSMD,PXXX4UCMC,239,MHS,P4KE,850 SERIES,813 SERIES,AQ1205-01ETG,483,RA,485,487,802 SERIES,259UL913,ITV4030 22A,SP3530,SM20,345121,102064,345121 SERIES,254 201 - 208,251,SA,494,PLEDXUX,253,SD,SE,SG,SH,259,4.0SMDJ,SL1002A,SM,15KPA-HRA,15KPA-HR,GTCX37-XXXM-R10,102074,102076,102079,102078,NANOSMDCH,GTCA28-XXXM-R03,NY61AP,262,102071,263,265,266,3.0SMC,267,DSLP,268,269,520 002,520 003,520 004,SL1003A,520 005,1KSMB,345101,MLA,LS24062RQ23,1210L,AQ36CANA-02HTG,445073,MLE,MHP-TAM15,272,273,MLN,M-SERIES,274,E-SERIES,275,278,279,AQ3102-02HTG,MHP-TAC6,803-01,MHP-TA,285,AQ3041,SMBLCE-HRA,PLEDXUSXA,SP4322-01ETG,AQ3045,TP1.5KE,SP4208,SC1205-01ETG,820-20 SERIES,354 SERIES,CG33.0L,SP11XX,359 SERIES,ULTRAMOV25S,MS-SERIES,111 SERIES,100 SERIES,NANOSMDC,346877,PICOASMDCH010F-2,340 SERIES,AHRF300,AHEF,342025,342024,342021,ZA,AQ3400,XGD,FH604,AQ1250-01ETG,PXXX3ACMC,FH602,PXXX6U,SP4010,PLEDXN,SZD200,TPSMF-4L,HG34,PLEDXS-A,J-SERIES,824 SERIES,FEMTOASMDC,ITV5432 30A,AK6-Y,557 SERIES,SL1021A,SL1021B,SP4020,SP4022,SP4021,SMDCH,SP4024,281010,SP4023,PLED,MINISMDC,AXXXXUX6,254 011 - 008,SMTAK3,PXXX0Q22XLH,MHP-TAM6,AK15,445005,281007,154T,281008,281005,SC1004U-ULC-04UTG,AK10,1.5KE,AQ1005,51800001009,PXXXXS4X,ITMOV,354701 SERIES,483A,445004,LS05006VPQ33,SP4044,BXXX1UC4,SP4045,5200001,SMBJ,AQXX-01LTG,AQ7538-08UTG,SP1064E-04UTG,TCF250,ITV9550,SMTOAK2,SMAJ,AQ7520-08UTG,PXXX3AX,NANOASMDC,461E,811 SERIES,800 SERIES,157T,FC51,PXXX1U,PXXX1S,TRF250,SMBJ-HRA,SMDJ,CG3,SP3384NUTG,CG2,CG5,CG4,2205,CG7,B3XX4UX,CG6,VLP,VLR,0603L,PLEDXUX-A,SMCJ,PICOASMDC,LS0504EDD12,SMD2,PXXX0Q22C,GTCA28,GTCX35-XXXM-R05,SP00R6-01WTG,SMDJ-HR,SMDC,TMOV34S,AHRF,440A,AXGD10603NR,K-SERIES,TPSMC-VR,H-SERIES,SZ1SMB,SZ1SMC,SZ1SMA,219XA,AK20-Y,ITV9550L2030MR,ULTRAMOV,441A,824 - 20 SERIES,SZ1.5SMC,SP1250-01ETG,C-SERIES,SC1210-01ETG,TB-SERIES,0402L,ITV9550 45A,AHRL,DHB34,FHN26W,AUML,TP6KE,LTKAK3,AQRV05-4HTG,LTKAK2,72R,977,TLP,LTKAK6,AQ15CANA-02HTG,XTREME,PXXX3AC,SP3205-01ETG,501,3452 SERIES,504,505,506,507,GTCX23-XXXM-R01,508,8.0SMDJ,PXXX3U,100060,100061,122090,100062,100063,100064,100065,PXXX0SX,100066,SC1533-01LTG,SPHV-C,AHS,122093,150318,TS600,150319,150316,150317,150315,AQ3102-02JTG,150312,513,514,100058,100059,2016L,286377,SP4337-01WTG,122088,122087,122083,GTCX26-XXXM-R05,521,523,ITV4030,AK15-Y,100067,526,150322,527,PXXX2SXLH,SL1411A,AK1,AK3,AK6,VTP,422A,SMCJ-HRA,ASMD,C-III,SR70,0805L,860 SERIES,RHEF,SMF3.3,303,304,305,308,35409,35408,35407,35406,TPSMA6L,PXXX2SX,SP724,SP725,SC1115-01UTG,TSL250,LOW RHO,HMOV,SP723,SP720,SP721,LVR025K-2,312,313,30R,314,556,315,557,559,318,SLD6S,SP1305,SP712,LCE,560,562,322,564,324,325,326,328,SLD5S,CX-SERIES,345101 SERIES,570,571,332,SLD8S,PXXX0SD,576,TRF600,PICOSMDC,SP3522,3.0SMCJ,SZSMF,LS1205EVD33,SP1326,AQ12CANA-02HTG,340,150307,100,342,FHN20G,344,345,35407 SERIES,348,SMAJ-HRA,150300,AUMOV,LTKAK10,445 SERIES,SC1333-01ETG,RUEF,GTCX25-XXXM-R02,GTCX25-XXXM-R05,LS0502SCD33,111,354,356,52000001009,359,SP3420,150274,RUSBF,SP1003,SP3422,560 SERIES,PXXX0ME,564 SERIES,SP2555NUTG,51900001009,10207101009,520 101,369,SL1122A,571 SERIES,824 - 20,SP1233,AQ2555NUTG,SP1255P,600R,PXXX4UX,WB07B0606L
电感制造商顺络(sunlord)授权世强代理其片式、陶瓷、高频、PoC、功率及车规级电感等
近日,顺络签约世强硬创电商,成为了世强代理的第238家品牌。顺络成立于2000年,主要从事芯片电子元件类型的开发制造,其主要产品包括线叠层片式电感器、绕线片式电 感器、共模扼流器、压敏电阻器、NTC 热敏电阻器、LC 滤波器、各类天线、NFC 磁片、无线充电线圈组件、电容、电子变压器等。另外,顺络还推出了满足AEC-Q200的车规级产品,包括EMC元件、电感、变压器、无线充电圈等。顺络已在平台陆续
公司动态 发布时间 : 2020-12-26
Residential Solar Solutions
型号- 7000,SMBJ,L75QS,M3,SPD,TMOV,SPF,SPE,HV,LSIC1MO170E0750,CLASS RK5,X3-CLASS,CLASS T,SMBJ30CA,CLASS J,DSI,SM7,SPD TYPE 2,DSP,MIXA,ULTRAMOV,IXD_6XXSI,1500V POLAR,SPXI,SP712,SP2555NUTG,SMF,ES,X2-CLASS,RA,1200 V DIODE,MIXG,RB,LPHV,X CLASS,324,369,DLA,LSIC1MO120E0120,SP3130,IXDN604SIA,650 V TRENCH,IX4351NE,SPXV,SM20,IXG*N170(A),SM15-02HTG,SPD2 PV,SMDJ,SPFI,SPFJ,SM712,CG3,1.5SMC,CG2,CG4,650V X2-CLASS,DSEI,215,KLKD,HIGH VOLTAGE SERIES,KSC,DSEP,XPT,TRENCH GATE GEN2,CG,XTREME,SMCJ,KR,ULTRA-JUNCTION X2,KSR,SMBJ18CA,LA,1200,IX4427,IXDN602SIATR,650V X3-CLASS,650V DIODES,SIC1MO170E1000,X4-CLASS
顺络压敏电阻选型表
顺络压敏电阻选型表,主要提供以下参数进行选型,Operating Temp:-55℃ ~+125℃;最大工作电压DC(V):5.5V~455V;额定脉冲耐量Energy 10/1000μs(Joules):0.003~8Joules;最大工作电压DC RMS(V):4V~350V.
产品型号
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品类
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Operating Temp(℃)
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最大工作电压DC(V)
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最大工作电压DC RMS(V)
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压敏电压 Min.@1mA DC(V)
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压敏电压 Max.@1mA DC(V)
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限制电压8/20μs(V)
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限制电压8/20μs(Amps)
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额定脉冲耐量Energy 10/1000μs(Joules)
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额定脉冲耐量Peak Current 8/20μs(Amps)
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L×W(mm*mm)
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T尺寸(mm)
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SDVL1608SD090PTHS101
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压敏电阻
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-55℃ ~+125℃
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9V
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6.4V
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11V
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16V
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30V
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1Amps
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0.1Joules
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100Amps
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1.6mm×0.8mm
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0.8mm
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选型表 - 顺络 立即选型
符合性声明 (Declaration of Conformity)
型号- AMWSA,MPH,AWPR-2,PZ/APZ,MPL,HQ,SPH,MPM,ARCDC,GESD,EPZ,WPH,WPG,WPL,AMCW-B,HZ,WPN,SDMM,SVMH,WTX,WPL SERIES,MQA,HFZ,UPZ,ACSR,SLCP,WPZ,SDCW,SDV,SLFBF,AMCW-P,AMP,HFPZ,MQQ,TWP,ASWPA,SLDA,ALTWR-F,WPL系列,TWS,ALTWR-H,SWRB,ALTWR-G,MZA,ALTWR-C,FA,MWLA,MWTC,SWRH,SLFS,ARLDC,SLFT,ATWPEP,SLBL,SDNT-C,ATWPEQ,ATWS,HPZ,AMWPQ,BW,TPP,AMWLA,AMWPH,SDCL,MWSA,MWSC,CWS,ATWPEF,ACWS,SDVL,SZ,MCL-N,TC,SDNT,SLFD,SDFL,SWPA,GZ,SLFB,MCL-A,MCL,SLFL,SLFH,ATWPPQ
MLA1812NR Varistor Series Automotive Qualified > Surface Mount Datasheet
型号- V30MLA1812NRAUTO,MLA1812NR,V100MLA1812NRAUTO,V38MLA1812NRAUTO,V56MLA1812NRAUTO,V65MLA1812NRAUTO,V14MLA1812NRAUTO,V26MLA1812NRAUTO,V85MLA1812NRAUTO,V45MLA1812NRAUTO
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现货市场
服务
配备KEYSIGHT网络分析仪,可测量无线充电系统发射机/接收机线圈的阻抗,电感L、电阻R、电感C以及品质因数Q,仿真不同充电负载阻抗下的无线充电传输效率。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 提交需求>
可定制分流器电阻范围20uΩ~100uΩ,可自由设计铜排形状尺寸,电镀:镀锡/镀镍。支持RoHS指令 、AEC-Q200。认证资格:IATF16949;ISO9001;检测精度:0.1%。
最小起订量: 100个 提交需求>
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