Shaqada LED-ga bandhigga midabka buuxa, shaqada darawalka IC waa inuu helo xogta bandhigga (kaarka helitaanka ama processor-ka fiidiyowga iyo ilaha kale ee macluumaadka) ee u hoggaansamaya nidaamka, gudaha soo saara PWM iyo isbeddelada wakhtiga hadda, oo dib u cusboonaysii wax soo saarka iyo miisaanka dhalaalka.iyo qulqulka PWM ee kale ee la xidhiidha si loo iftiimiyo LED-yada.Qaybta IC ee ka kooban darawalka IC, macquulka IC iyo furaha MOS waxay si wada jir ah u wada shaqeeyaan bandhiga bandhiga LED waxayna go'aamiyaan saamaynta bandhigga ee ay soo bandhigto.
Chips-dareewalka LED-ka waxaa loo qaybin karaa jajabyo ujeedo guud ah iyo chips ujeedo gaar ah.
Waxa loogu yeero chip-ujeedada guud, chip laftiisa si gaar ah looguma talagelin LED, laakiin qaar ka mid ah chips macquul ah oo leh qaar ka mid ah hawlaha macquulka ah ee shaashadda LED-ka (sida taxane-2-isku mid ah diiwaanka wareejinta).
Chip-ka gaarka ah waxaa loola jeedaa chip-ka darawalka ee si gaar ah loogu talagalay bandhigga LED-ka iyadoo loo eegayo sifooyinka iftiinka LED-ka.LED waa aalad sifo ah oo hadda jirta, taas oo ah, iyada oo la adeegsanayo saturation conduction, dhalaalkeedu wuxuu isbeddelaa isbeddelka hadda, halkii uu hagaajin lahaa korantada dhexdeeda.Sidaa darteed, mid ka mid ah sifooyinka ugu weyn ee chip go'an waa in ay bixiyaan ilo joogto ah hadda.Isha joogtada ah ee hadda jirta waxay xaqiijin kartaa wadista xasilloonida LED-ka waxayna baabi'in kartaa qulqulka LED-ka, taas oo ah shardi u ah bandhigga LED-ka si loo muujiyo sawirro tayo sare leh.Qaar ka mid ah chips-ujeedada gaarka ah waxay sidoo kale ku daraan qaar ka mid ah shaqooyinka gaarka ah ee shuruudaha warshadaha kala duwan, sida ogaanshaha qaladka LED, xakamaynta faa'iidada hadda iyo sixitaanka hadda.
Kobcinta darawalka IC:
Sanadihii 1990-meeyadii, codsiyada soo bandhigida LED-ka waxaa u badnaa midabo kaliya iyo laba-jibbaaran, darawalka korantada joogtada ah ee ICs ayaa la isticmaalay.Sannadkii 1997, kii ugu horreeyay ee loo qoondeeyay kontoroolka wadista 9701 ee bandhigyada LED ayaa ka soo muuqday waddankayga, kaas oo ka soo baxay 16-heer grayscale ilaa 8192-cawlan, garashada WYSIWYG ee fiidiyowga.Intaa ka dib, marka la eego sifooyinka iftiinka LED-ka, darawalka joogtada ah ee hadda jira wuxuu noqday doorashada koowaad ee darawalka bandhiga LED-ga oo buuxa, darawalka 16-channel ee leh isdhexgalka sare wuxuu bedelay darawalka 8-channel.Dabayaaqadii 1990-aadkii, shirkadaha sida Toshiba ee Japan, Allegro iyo Ti ee Maraykanka ayaa si isdaba joog ah u bilaabay 16-channel LED chips darawallada joogtada ah.Maalmahan, si loo xalliyo dhibaatada fiilooyinka PCB ee bandhigyada yar-yar ee LED-yada, qaar ka mid ah soosaarayaasha IC-ga ayaa soo bandhigay 48-channel LED chips darawalnimo joogto ah oo isku dhafan.
Tilmaamayaasha waxqabadka darawalka IC:
Waxaa ka mid ah tilmaamayaasha waxqabadka ee bandhiga LED, heerka soo kicinta, heerka cawl iyo muujinta muuqaalka ayaa ah mid ka mid ah tilmaamayaasha ugu muhiimsan.Tani waxay u baahan tahay joogtaynta sare ee hadda udhaxeysa bandhiga LED-ka IC kanaalada, heerka isgaadhsiinta xawaaraha sare iyo xawaaraha jawaabta joogtada ah ee hadda jira.Waagii hore, heerka dib u cusboonaysiinta, miisaanka cawl iyo saamiga ka faa'iidaysigu waxay ahaayeen xidhiidh ganacsi.Si loo hubiyo in hal ama laba ka mid ah tilmaamayaasha ay ka fiicnaan karaan, waxaa lagama maarmaan ah in si habboon loo huro labada tilmaame ee soo hadhay.Sababtan awgeed, way ku adag tahay bandhigyo badan oo LED ah inay haystaan ugu wanaagsan labada adduun ee codsiyada la taaban karo.Ama heerka cusboonaysiinta kuma filna, iyo khadadka madow waxay u nugul yihiin inay soo baxaan marka la tooganayo qalabka kamaradaha xawaaraha sare leh, ama cabbirka cawlku kuma filna, midabka iyo dhalaalkuna waa iswaafaqayn.Horumarka tignoolajiyada ee soosaarayaasha darawalka IC, waxaa jiray horumarro laga gaaray seddexda mushkiladood ee ugu sarreeya, dhibaatooyinkaasna waa la xalliyay.
Codsiga muraayadda midabka buuxa ee LED, si loo hubiyo raaxada indhaha isticmaalaha muddo dheer, dhalaal hooseeya iyo cawl sare ayaa noqday heer gaar ah oo muhiim ah si loo tijaabiyo waxqabadka darawalka IC.
Waqtiga boostada: Oct-09-2022