[畢業(yè)設(shè)計(jì)]高頻flyback_變壓器(偶合電感器)最佳之設(shè)計(jì)

ORLANDOA1A01高頻FLYBACK變壓器偶合電感器最佳之設(shè)計(jì)一前言由于市場(chǎng)日益競(jìng)爭(zhēng),如何將產(chǎn)品的價(jià)格降低,體積縮小,質(zhì)量提高變成現(xiàn)今大家所共同努力的目標(biāo)而在SWITCHPOWERSUPPLY的領(lǐng)域里,變壓器是非常重要的一部份,而FLYBACK變壓器更在其中占了舉足輕重的地位如何將變壓器最佳化,就顯得額外的重要我們可以從很多SPS書(shū)籍中獲得FLYBACK變壓器的設(shè)計(jì)方法,雖然不盡相同,卻是大同小異就一個(gè)設(shè)計(jì)者的角度來(lái)說(shuō),設(shè)計(jì)一個(gè)FLYBACK變壓器并不難,只要將設(shè)計(jì)的參數(shù)訂定,依照書(shū)上所寫(xiě)的設(shè)計(jì)步驟,一個(gè)變壓器就誕生了,在這變壓器誕生的同時(shí),你難道不G1262G5588G11109,這變壓器是G2554G1038最佳的變壓器G2614G3252G1038在這設(shè)計(jì)的參數(shù)里G17836G19556G15267了不G11842定的G3252G4388G1375如FLYBACK變壓器G2033G13435G8991電感G1552參數(shù)的訂定,你如何G14033G11842定你G2030G5332G3999設(shè)計(jì)所G17885定的感G1552G4557這G20075變壓器是最佳感G1552G2614G7424G7003將G19036G4557設(shè)計(jì)參數(shù)G1582G17839一步的G6518G16764,以G17810G2052變壓器的最佳化二變壓器設(shè)計(jì)在G4466G19481設(shè)計(jì)變壓器時(shí),G7389G1016個(gè)G2419G2029是G5529G20047G8892G5859G2052的1G9213G2331這是設(shè)計(jì)變壓器最G1039要的G20045目G2656目的,G4445G16280里G7389G16280定變壓器的最高G9213G2331,變壓器的G9213G2331G19668在G4445G16280的G19492G2058G14551G3272G1881G1375如CLASSA的G13489G4557G9213度不G14033G17241G1781990G101CCLASSB不G14033G17241G17819110G101CG12573G12573,這G18129是我們?cè)O(shè)計(jì)G5529G20047G17993G5502的G1946G20292G13475G8994G5831在這市場(chǎng)上G994G1166競(jìng)爭(zhēng),G13475G8994G13783量是不可G6122G13582的,G4600其是變壓器G5460G5460是G7438器COST中的G1039要部G2010之一,所以如何將變壓器的價(jià)格,體積,質(zhì)量G6496G6581G2052最佳,就是我們所努力的方G25331設(shè)計(jì)步驟要將變壓器最佳化,G19668將不同的參數(shù)重G3809G1207G1849計(jì)G12651,如G7536G2045G11004EXCEL的方G12255G5347G6122G2045G11004G12255G5219G16833言將G1856G5347寫(xiě)G991來(lái),這G7691將變得很G12628G2345,只要G6925變參數(shù)就可得G2052G13479G75361參數(shù)的訂定在設(shè)計(jì)變壓器之前,G19668G1820G20056定一G1135參數(shù),很多書(shū)籍上這G1135參數(shù)G18129不同,不同的設(shè)計(jì)參數(shù),設(shè)計(jì)G8981G12255G1146不同,現(xiàn)在G19036G4557FLYBACK變壓器最常G11004的設(shè)計(jì)參數(shù)G17767G1849電壓VIN,G17767G1849的頻G10587FS,最大DUTYCYCLEDMAX,G2033G13435G994G8437G13435G3292數(shù)G8616N,G2033G13435電感G1552LP,G17767G1998電壓VO,G17767G1998最大WOG13459G3292的電G8981G4506度J,最大G11925G17902G4506度BMAX,最大G13481G13459G3252G4388KW2由這G1135設(shè)計(jì)參數(shù)G12651G1998DUTYONG2033G13435G8991G4560G17902的G8616G1375DUTYOFFG8437G13435G8991G4560G17902的G8616G1375G2033G13435G1144G8981電G8981G1552G141IPPG2033G13435電G8981PEAKG1552IPPEAKG2033G13435電G8981RMSG1552IRMSG2033G13435G13459G3292的G13459G5464G158PG8437G13435電G8981PEAKG1552IPPEAKORLANDOA2A32G8437G13435電G8981RMSG1552IRMSG2033G13435G13459G3292的G13459G5464G158SG7389G6940G11925G17347G19766積G994G19093G5527可G13481G19766積的G1068積ACAW在由AWACG17885G6333G17878當(dāng)?shù)腉19093G5527設(shè)計(jì)參數(shù)里G7389G1135是定死的,G1375如VIN,FSIC操作頻G10587,DMAXICMAXDUTYCYCLE,VO,WOG7389G1135是依G13475驗(yàn)所定的,G1375如電G8981G4506度JCLASSA自然散熱OFFONDD,G2029操作于CCMORLANDOA8A95以此作G1038G2010隔CCMG994DCM若只G6925變LP的G1552,其余G20056定參數(shù)固定,將得G2052一LPG994ACAW的關(guān)系如G991感G1552愈大,所G19668的變壓器愈大3變壓器CORE的G17885G6333再G17885G6333CORE之前,G7389幾點(diǎn)是G5529G20047G8892G5859G994了解的ICORELOSS的G9213度特性依據(jù)G7438器所G16280定的周G9213,當(dāng)CORE的G9213度上G2331時(shí),我們希望其CORELOSS是隨著G9213度而G991降,如此才G8616較不G1262G7389熱跑脫的現(xiàn)象發(fā)生II當(dāng)銅損G19093損時(shí),G6940G10587最高III變壓器的大小直接影響G2052系統(tǒng)的操作模G5347,所以G5529G20047清楚DCMG994CCM的優(yōu)G13582點(diǎn),才G14033G17885G6333G2052最G17878合G19668求的COREIV符合最G13475G8994的G2419G2029也就是說(shuō)10元G14033符合G16280格G994G19668求決不多花1毛錢(qián)VG17885G6333的CORE愈大,G6940G10587不一定愈高,但散熱G19766積愈大,G9213G2331G1262愈低若了解以上幾點(diǎn)后,依據(jù)G19668求G17885定變壓器的COREG1375如若在乎的是散熱問(wèn)題,可G17885G6333大一點(diǎn)的COREG2656CORELOSS較小的CORE如MPPCORE若在乎的是體積G2656價(jià)格,可以G17885G6333較小G994市場(chǎng)上價(jià)格較低的CORE如PC30,PC40,MZ4,EE,EICORE若CORE的大小不知如何G17885G6333,建議G1820G17885G6333符合2倍BOUNDARY感G1552計(jì)G12651G1998來(lái)ACAW的CORE4變壓器最佳化當(dāng)你G17885定CORE之后,可得知其ACAW的G1552在小于ACAW的G2419G2029G991變動(dòng)G20056設(shè)參數(shù)感G1552LPG994電G8981G4506度,也就是G12573于G6925變銅損G994G19093損之間的關(guān)系可以得G2052LPG994LOSS之間的關(guān)系圖如G991當(dāng)PCU銅損PFEG19093損時(shí),TOTALLOSS接近最低G1552此感G1552正是最佳的G17885G6333ORLANDOA10A116CORELOSSG19093損G994材料特性G7389關(guān),G2058造商G1262提供G2345位G19093損的相關(guān)資料,G7389的是G4557照?qǐng)D,G7389的是以G991的G1856G5347NMFEFBKPBG11925G17902G4506度變化量,810FANDVBCPONINMG2656N依材質(zhì)不同而異CORELOSSPFEVEVECORE的體積COUPLELOSS銅損G994操作頻G10587G2656使G11004G13459G5464G7389關(guān),各種G13459G5464的G13459材G18129G1262提供G2345位長(zhǎng)度的直G8981電阻G1552,但除了G13459G5464中的標(biāo)G1946G1552G8981電阻外,G17836存在著由于G1144G8981電G8981集膚G6940應(yīng)所產(chǎn)生的G13481G13459電阻增量DCACDCRMSCURRRIP220003930120TCRCTRDCDCG1038了減少集膚G6940應(yīng)所帶來(lái)的損失,可以使G11004多股G13459,但多股G13459的G13459G5464并非愈小愈好,太多的G4560G13459,層數(shù)太多,鄰近G6940應(yīng)所造成的損失G1262增大,甚至大G17819G11004多股G13459所降低的損失由G991列G1856G5347可得知DCRACRFRRFG3252鄰近G11925場(chǎng)切割所造成的增量其P,X,FR關(guān)系如G991圖,其中WDNDX0866PNUMBEROFLAYERORLANDOA10A117NNUMBEROFTURNSDWIREDIAMETERSKINDEPTHWLAYERWIDTH當(dāng)G12651G1998TOTALLOSSCORELOSSCOUPLELOSS可以G1820G15261由以G991G1856G5347,G12651G1998G5948G11065的G9213G2331,以G2040定是G2554符合G4445G16280的標(biāo)G1946當(dāng)G9213G2331G17819高時(shí),G15932G12046G17885的CORE太小,散熱G19766積不G3827若G9213G2331很低,G15932G12046可以再將CORE縮小以G17810G2052最G13475G8994之G2419G2029G4466G19481的G9213G2331G1262G8616此G1856G5347G12651G1998的G9213G2331高SLOSSTOTALAPT800WCSAAA34AS散熱G15932G19766積2CM一切G18129決定后,就G2109G991G13481G13459的方法若要降低G9443感,最好是G11004G989G7138G8847G13481法,而G1000G13481G13459G4506度要G5191G3355若要G19462G8502EMIG2029可G2164G1849法拉第銅G10627G4439可降低一,G1120G8437G8991的G7446散電G4493G1552,G16765COMMONMODENOISEG994DIFFERENTIALMODENOISE不G7143G13475由變壓器的G7446散電G4493G1268G4560G1998G2447,此方法G1262降低G13481G13459G3252G13044KW,G3252此在一G5332G3999就得決定G2164不G2164法拉第銅G10627三G4466G1375設(shè)計(jì)1參數(shù)的訂定G7389一G17767G1998PO20W,VO12V的直G8981G17728G6454器,G17767G1849電壓G14551G3272G10381860VDC,FS100KHZ,G19668符合G4445G16280CLASSB,J65A/2MM,一G1120G8991G7092G20047G4445G16280間距,不G2164法拉第銅G10627,KW03,BMAX2500G,DMAX048由VIN18V,DMAX048NG17885定G103813BOUNDARY感G1552G1038194UHLP選定為40UHORLANDOA12A1382理論計(jì)G12651由設(shè)計(jì)理論可以G12651G1998G991列的G1552DUTYONG2033G13435G8991G4560G17902的G8616G13750464DUTYOFFG8437G13435G8991G4560G17902的G8616G13750536G2033G13435G1144G8981電G8981G1552G141IPP2321AG2033G13435電G8981PEAKG1552IPPEAK3554AG2033G13435電G8981RMSG1552IRMS1693AG2033G13435G13459G3292的G13459G5464G158P0576MMG8437G13435電G8981PEAKG1552IPPEAK4620AG8437G13435電G8981RMSG1552IRMS2365AG2033G13435G13459G3292的G13459G5464G158S0680MM集膚深度220MM所以G17885G6333G13459G5464044MM的G13459G546402MM多股并G13481,N1G110048條,N2G1100412條022MMG13459G5464并G13481JIS2種G13459材02MMG13459G5464最大G4448成外G5464G1038022MMG7389G6940G11925G17347G19766積G994G19093G5527可G13481G19766積的G1068積ACAW114734MM3CORE的G17885G6333G17885G6333COREEE19,材質(zhì)PC40,其ACAW1258564MM,CORELOSS在接近100G101C時(shí)最低BSAT25G101C5100GBSAT60G101C4500GBSAT100G101C3900GBSAT120G101C3500GAC2282MMAW5522MMVE88953MMG5191G3355G8611G2289長(zhǎng)度MLT431MM4變壓器的最佳化JIS2種G13459材02MMG13459G5464最大G4560體電阻5772OHM/KMG5049作G9213度90G101C時(shí),最大G4560體電阻736OHM/KMG1207G1849變壓器正常操作G991的G17767G1849電壓275V,在符合ACAW1258564MM的條件G991,G6925變LPG994J可求得G991列關(guān)系圖ORLANDOA14A159當(dāng)LP感G155240UH,N12283,786條并G13481,N21756,1356條并G13481時(shí)CORELOSS0288COUPLELOSS0358,TOTALLOSS最低0646W,G1207G1849G991G5347,G12651G1998其G5948G11065G9213G23310612WCSAAA34CAPTSLOSSTOTAL980042,G2474感G1552LP40UH,N122,02MM8條并G13481,N217,02MM14條并G13481四G13479論在G4466G19481設(shè)計(jì)上,G11004常G5589電