基于tl3843单管它激式反击型开关电源的设计与制作1

基于TL3843单管它激式反击型开关电源的设计与制作一开关电源模块的性能特点和技术指标1采用一片TL3843驱动MOSFETIRFBE30开关电源，配817型光耦合器，构成光耦反馈电路，能将85265V交流电变换成5V/4A，18V/4A的直流稳压输出。功率92W，效率85。2该模块的主要技术指标如下交流输入电压范围U85265V输入电网频率5060HZ输出电压UO15V，UO218V最大输出电流IOM4A。电压调整率（85265V）SV1负载调整率SA11电压效率85输出纹波电压30MV3电路特点功率开关截止期间，功率开关变压器向负载释放能量功率开关变压器既起安全作用，又起储能电感的作用。变压器要工作在连续工作状G5589，功率开关变压器G5529G20047大G1122G1032G11040电感G1552。输出G12483G993能开路，G2554G2029将G3845G6523。G2499用G1122G1972G11346G10938的输出功率G3342合。反G1999G5347变换器G2419G13459路G2419G10714如G32821G1611212C1CAPRVSISVOIPG32821G161G1120器G1226G17885G63331MOG86G12661的G17885G63332整流G12661的G17885G6333在G2345片电源G1025，一G14336采用G17241G5567G5686G3809G1120G7509G12661作G1038G4896G1313G1120G7509G12661，输出整流G12661和反馈电路G1025的整流G12661。（1）G4896G1313G1120G7509G12661G19668用G17241G5567G5686G3809G1120G7509G12661，UF4000，G6122FR157G5567G17907G5686G3809G1120G7509G12661。G17836G2499G17885用BG60V26G38。G17885用G7114要G8892G5859反向G13796压。（2）输出整流G12661G17241G5567G5686G3809G1120G7509G12661G17878合作G1038开关电源的G20652压，大电流整流G12661，G16786整流G12661G4466G19481G6227G2475的反向G4804G1552电压G1038UA0A2A3A4A5A6G6164G17885整流G12661的最G20652反向工作电压G1038UA3A7A8A9UA0A2A3A4A5A6G1866G4462整流电流IG71G333IA11A7A12G7424G1375G1025要G8726输出4AG15G2029G17885G2474MUR16G104G104。（3）反馈电路G1025的整流G12661G2499G17885用1G494148，UF4003，MUR120G6122RF107。3电G11925G5190G6212G9400波器1212C101U630VDCC2001U630VC301U630VC401U630VA10A13A10A13LN电网G3134G3780G7171电G11925G5190G6212的一G12193。G1030模G5190G6212G7171G1016G7477电源G13459G1055间的G3134G3780，G1861模G5190G6212G7171G1016G7477电源G13459G4557G3332的G3134G3780。电G11925G5190G6212G9400波器G5224G4557G1030模，G1861模G5190G6212G18129起G2052G6245G2058作用。G381和G382采用G15192G14192电G4493器，G4493量范围大G14280G7171001G173FG794047G173FG15主要用G7481G9400G19512G1030模G5190G6212。G383和G384G17340G6521在输出G12483，G5194将电G4493器的G1025点G6521G3332，能G7389效G3332G6245G2058G1861模G5190G6212。G383和G384G1146G2499G5194G13864在输入G12483，G1185G17885用G19530G10955电G4493，G4493量范围G71712200G83FG79401G173F。G1038G1955G4579G9443电流，电G4493量G993G5483G17241G1781901G173F，G5194G1000电G4493器G1025点G5224G994大G3332G6521G17902。G381G794G384的G13796压G1552G3355G1038630VG39G38G6122250VAG38。G120938G78HZG1582G3534G7424开关频率G7114，G1120G8437G16868波G1177G103872G78HZ。G17241G17819150G78HZG7114，EMIG9400波器G16786计指标就要严格的多。3G9400波电G4493的G17885G6333G16786计100W反激变压器G17878G5224电压从85240V变化输出G1016路18V/4A5V/4A变压器的G16786计G994计算（1）G17885G6333G11925芯大G4579如果效率G103885G15G2029变压器的传输功率85041845108W下G3282G7171一个2030G78H，工作频率，温升,30CTO硅G4927铁氧体材料G2058成的G11925芯传送功率G11925芯尺寸的关系。在G4466G19481使用G7114留G7389一G4462裕量G7171完全G5529要的。根据110W，在G32822G161曲G13459上G4557G11925芯G1582一初步G17885G6333，查G5483型号E42/20。（2）计算TA14A15G2419边绕组开关晶体G12661TR的最大导G17902G7114间G4557G5224在最低输入电压和最大负载G7114发生。在这个G1375子G1025，假G16786G39TSTON05，工作频率38G78HZ。TG86FSTONG39TG86052613US（3）计算最低直流输入电压G16786计变换器在最低G13459路输入电压G7114发生满载工作，计算它的输入G12483的直流电压VG86。G4557G1122G2345相交流整流用电G4493G9400波，直流电压G993会G17241G17819交流输入电压G7389效G1552的14倍，也G993G4579G112212倍。他G994电源G13459路G1025的电源阻抗，整流器电压降，储能电G4493的等效阻抗，G1209及负载大G4579G3355G7389关，在G247413。G16786交流电压110V下限G103890V，倍压整流系数G247419VG86901319222V4G17885G6333工作G7114G11925G17902密度G1552E42/20G1025心柱G11925路的G7389效面积AE140MMA16在100COG7114饱和G11925感G5224强度G7171360MT。G1209一G14336形状、材料的铁氧体G11925芯，当工作频率在38G78G7114，65的饱和G1552BA17T。G4466G1375说明，这G7114G1185G7171一个良好的工作区间。（5）计算G2419边匝数因G1038作用电压G7171一个方波，一个导G17902期间的伏秒G1552G994G2419边匝数关系EACONSPABTVNG5347G1025原边匝数；PN。磁心有效面积（）；交变工作磁密（）；导通时间（）；原边所加直流电压（2MMAMTBSTVVEACONS计算G5483匝88140234013222PN（6）计算副边匝数G1209输出电压G71715VG1038G1375进行计算，G16786整流G1120G7509G12661压降07V，绕组压降G103806V，G2029副边绕组电压G1552G10385070663V。G2419边绕组每匝伏数匝VNVPS52288222副边绕组匝数匝5252236SN由G1122副边低压大电流，G5224该避免使用半匝G13459圈（G19512非特殊技术上G19668要）考虑G2052E型G11925心G11925路G2499能产生饱和G7114，使变压器调节性能变差，因此G2474244的整数G15523匝。（7）计算G17885G4462匝数下的占空比辅助输出绕组匝数因副边G2474整数3匝，反激电压G4579G1122正向电压，新的每匝的反激电压G7171匝。V12336占空比G5529G20047G1209同样的比率变化G7481维持伏秒G1552相等。STTSON8115221212265221212G4557G112212伏直流反馈输出，考虑绕组及G1120G7509G12661压降1V后G103813V匝）匝（取6261213NFG4557G112218伏直流输出，考虑G12661压降1V，G2029输出18119VG49G86212199匝（8）确G4462G11925心气隙的大G4579上面已经分G7524G17819，G5114气隙在一个G7368大的G11925G3342强度HG1552下G6177会产生饱和，因此G11925心G2499经G2475一个G7368大的直流成分。G2490G3818，当H0G7114，RBG7368G4579，G11925心的G11925感G5224强度BG7389一个G7368大的G2499用范围B。最后，G7389气隙G7114，导G11925能G2159降低，导G14280每匝的电感量G1955G4579，绕组G5647电感G1552G1955G4579，G1306气隙的G4396在G1955G4581G11925心G18336直流成分G6164产生的G11925G17902。G4466G19481G16786计工作G7171G17902G17819气隙大G4579调整G7481G17885G4462能量的传G17894方G5347。G328211G1613G12046出G989G12193G2499能方G5347。G328211G1613（G68）G7171完全能量传G17894方G5347。这G12193方G5347传G17894同样的能量G4804G1552电流G7171G5468G20652的。工作G1025开关晶体G12661、输出G1120G7509G12661和电G4493器产生最大的G6451G13803，G1000变压器G14270G17535产生最大的G19120G13803（RI2）G727G328211G1613（G69）G15932G12046G993完全能量传G17894方G5347。此G7114，G1867G7389一个低电流G7024率，这G7171电感G17751大的G13548G6937。G4625G12661这G12193工作方G5347G6451G13803最G4579，G1306这大的G11925化直流成分和G20652的G11925G9394将使大多数铁G11925G10301G17148产生G11925饱和。G328211G1613（G70）G15932G12046一个G17751好的G6252G1025方G8873，它的G4804G1552电流大G4579G17878G1025G4804G1552G994直流G7389效G1552的比也比G17751G17878G1025。当经调整气隙，使在合G17878的气隙大G4579下，就能G5483G2052这一传G17894方G5347。工作G1025G3134G3780G17751G4579，效率也合G10714。（9）G11925心气隙大G4579的确G4462G4466用方G8873G6566入一个G5132用气隙，G1375如05MM（002G14533寸）G727用一G14336G14045G1926G4497度G6523G2058方G8873，使开关电源工作起G7481，G5194在变压器G2419边G1030入一个电流G6518G19036，G13543G5942调整G14045G1926G4497度，使G1055在G20081G4462输入电压下G7389G20081G4462负载，G17902G17819G16278G4531电流特性的形状，G8892G5859G4579心避免G11925心饱和，直G2052G17810G2052G6164要G8726的输出电压和电流，G8892G5859电流波形的G7024率，IPIAVE0T1T2IPIAVE0T1T2IP20T1T2IP1IAVEIT1113A1113B1113CG5194调节气隙G17810G2052G6164要G8726的G7024率。（10）气隙的计算使用G328211G1613G2419边电感G2499G17902G17819电流波形G3282的G7024率TIG6365下G5347G8726出ITVLSP111在G328211G1613（G70）G1025，G16786G2474123PPII，G202912TTTONG7114间G1881电流G5191G3355G1552AVEI1111223PPPPPAVEIIIIII112在G2620期ST的G5191G3355输入电流SI490222110SSVPIA相G5224的G1552G10389801326490ONAVETISTSIA，49021AVEPIIA，471312PPIIA在ONT期间电流变化量12PPIIIAAA980490471，G1207入（111）G8726出G2419边电感PL94298010132226ITVLSPMH一G7098已G11705G2419边电感PL和匝数PN，G8726出电感系数LA2PPLNLA（113）2233218810942匝NHAL根据G6164G17885G11925心LG,2042FAEL的一G14336如G328211G1614G6164G12046曲G13459G2499G8726G5483气隙。如果G8821G7389曲G13459，G6122G6164G5483G13479果G17241G17819G11925路G19283度的1G7114，G2499用下G5347计算气隙PEPGLANL20（114）G5347G1025MMLG气隙长度（G72704710PIG727原边匝数PNG727MHLP原边电感（G7272MMAE磁心面积（。5309421408810427PIGLMM11G7828G8991G11925心G11925G17902密度和饱和区间G7828G8991G11925心的最大G11925感G5224强度G7171G5529要的，这G2499确G1457G6564G1391一个最大工作G1552和饱和G1552G1055间的G17878度区间。在G1231G1321G5785G1929下，G2265G6336G11648G7114负载和G20652温，G5224避免G11925心饱和。这G2499用G1016G12193方G8873G7481G7828G8991G29G4557变换器的G8991量G6122计算。G311G8991量G11925心饱和边G11040。G8892G5859这G12193G7828G8991方G8873G4557G1231G1321G16786计方G8873G18129行G1055G7389效。G6238输入电压G16786G13634G2052G1185能维持G6523G2058的最低G1552，G7424G1375G1025G103885VG5050G2503。G16786G13634输出负载G2052最大功率G1552。在G12046波器上直G6521G16278G4531G2419边G13459圈流G17819的电流波形，G1955G4579工作频率直G2052G16278G4531G2052G11925饱和G10628G16949（此G7114，电流G14045G1926G13479G7475G7114电流G12373G9994上升）。计算此G5785G1929下的ONTG994正G5132的ONTG7114间G3698G2164的G11346分比，G2499G5483出在一G14336G5785G1929下的G11925感G5224强度边G11040。此边G11040G17836G5224考虑G2052在G20652温下G1813G16780G11925感G5224强度会降低（G2454G16277G328211G1612），G5194G1813G16780在G11925心气隙和G11648G7114要G8726G1025G738910的G4493量。如果留的边G11040G993G1728710G7114，G2499G3698G2164气隙。G312计算G11925心饱和边G11040。计算交流G11925G17902产生G11925感G5224强度变化G5145G1552。EPONSACANTVB（115）G7424G1375G102523401408813222ACBT使用G11925感G5224强度G994直流电流相关的关系G5347计算直流成分DCB。假G16786G11925心G6164G1209G11925阻G18129G19610G1025在气隙G1025，G7186G9994作G1038一个比G17751G1457G4444的G13479果，G2499G8726G5483一个G17751G20652的直流G11925感G5224强度。此G17829G1296G1552G1813G16780使用一个G12628G2345的G1856G534731010GPPDCLINHB（116）G5347G102504710PIG727原边匝数PNG727）导通时的直流幅值（有效的直流电流，开始AIP1G727MMLG气隙长度G727）（直流作用的磁感应强度TBDC。G7424G1375G1025113104904908810437PIDCBMT交流和直流G11925感G5224强度G1055和G5483G2052G11925感G5224强度最大G155223011322342MAXDCACBBBMTG7828查在100G263G7114的G11925心材料特性的边G11040从G328211G1612曲G13459G2499G11705360SBMTG5050G2503，234MTMAXBG31SB360MT，G6937工作G7114留G7389G1325量，G16786计G17902G17819。负边绕组的G13459G5464G6365电流密度G1552G1038400G70M/A考虑，G17902G178194A电流G19668要400G70M/A4A1600G70MG3290密G13831考虑G17247G13944效G5224及绕G2058方G1427G178855G13941G13459G5194绕，每G139411600/5320G3290密G13831，G2454G16277下G15932G17885AWG4225G6导G13459。G1866G3290密G13831G1038230。AWGNUMBERINCHMMMMRESISTANCEOHM/M200032081205180033321002850723041004222002530644032600532300226057302580066824002010511020500842250017904550162010626001590405012901342700142036101020169280012603210081021329001130286006420268变压器G16786计G17836G2499G1209用G17731G1226如上G17860变压器G2499G17902G17819G17731G1226G16786计G1038绕G2058变压器G989G18108分G2529G16801G16311释1电压调整率G4462G1053G1038当输入电压G993变，负载电流从G19658变化G2052G20081G4462G1552G7114，输出电压的相G4557变化，G17902G5132用G11346分数G15932G12046。G71UUOG16U/UOUOG29空载G7114输出电压UG29变压器G9921G5191G15925后的满载电压，G2375G16786计电压。2负载调整率G2499G1209G17902G17819G32822G161和G53472G161G7481G4462G1053，LG39O的负载调整率G17246G4579，说明LG39OG6245G2058负载G5190G6212的能G2159G17246强。图21OUTPUTVOLTAGEOUTPUTCURRENT21EI40NPNFNS1NS288A19056A19053A190559A19055G5347G1025G440VG79OG68G71G252负载调整率IMG68XG252LG39O最大输出电流VTG252输出电流G1038IMG68XG7114，LG39O的输出电压VOG252输出电流G103801MAG7114，LG39O的输出电压G440VG252负载电流分别G103801MA和IMG68XG7114的输出电压G1055差G440电路G2419G10714G3282G72712345678751R51021KVC133R801ML11233KR3Q1MUR860C21000UC31000U123U1TL431ACLPR12KR210KR410KR9502D15822C51000U01ML2C61000U18T1BRIDGE1C901UC1147UF400VC1001UR151KR1651K75139101114T22RF10724K2WR601UFC45IRFBE300273WR18R1020RF175K2WR7R1410K471C121KR13472C1322R1151KR1710KR1201UF4C71000U1PC8175GND33R8功率电路采用RG38G39箝G1313反激变换器，如G32821G6164G12046。当功率开关VT关断G7114，储能变压器T的G9443感能量转移G2052箝G1313电G4493G38G1025，G5194在电阻R上消G13803，功率开关VT关断电压尖G4804G5483G2052了G7389效的G6245G2058。G32821RG38G39箝G1313反激变换器电路拓扑G9994而，箝G1313电路G2454数G4557反激变换器的性能G7389重要影响。G993同R、G38G1552的箝G1313电G4493电压波形如G32822G6164G12046。G32822G68G1025，G38G2474G1552G17751大，G38上电压G13543G5942上升，副边反激G17819G1926G4579，变压器G2419边能量G993能迅G17907传G17894G2052副边G727G32822G69G1025，R、G38G1552合G17878，G38上电压在开关G12661截止G11648间G1926上去，G9994后G1120G7509G12661G39截止，电G4493G38G17902G17819电阻R放电，G2052功率G12661开G17902G11648间，G38上电压G5224放G2052G6521G17829G491G492U。G727G32822G70G1025，R、G38G3355偏G4579，G38上电压在G12661子截止G11648间G1926上去，G9994后因G1038RG38G7114间G5132数G4579，G38上电压G5468G5567放电G2052等G1122G4912U。，此G7114RG38G39箝G1313电路将成G1038反激变换器的死负载，消G13803储G4396在变压器G1025的能量，效率降低。G32821G32822G16786计要G8726当直流电压升至82VG7114电源起动，一G14336反馈电压G103812V，驱动电流G103805MA，G2474样电阻G6164G19668电流G1038O44MA，因此起动电阻G1038R750440128275KG14533国UNITROG71EG1856司电流G6523G2058型IG38芯片UG383843，G1038G2345G12483输出G5347G14045G4497调G2058器。芯片G73898个引脚，G3818电路G6521G13459G12628G2345，G6164用元器G1226G4581，G1000性能优G17246，成G7424低，驱动电G5191非G5132G17878合G1122MOSG3342效G5224G12661。UG383843G6523G2058器G1881G18108方框G3282UG383843G6523G2058器的G1881G18108方框G3282如G328218G12046。8脚G1038G1881G18108G1391G3818用的G3534准电压，G5114载能G2159G103850MAG7277脚G1038芯片工作电压，变化范围G10388V34V，G1867G7389G17819压G1457护和欠压锁G4462功能G7274脚G6521RT，G38T，确G4462锯齿波频率G7275脚G6521G3332G7272脚电压反馈G7273脚电流G7828G8991G7271脚误差放大器补偿G12483，G17902G17819G1881G18108EA误差放大器构成电压电流双闭环G7276脚G1038推挽输出G12483，G2499G6564G1391大电流G3282腾柱输出，输出电流G178101A。G32823UG383843芯片G1881G18108方框G3282222振荡频率的G16786G13634如G32824，UG383843芯片8脚和4脚G1055间G6521RT，4脚和5脚G1055间G6521G38TG158脚5VG3534准电源经RT给