Kev them nyiaj yug BOM quotation Tshiab Original Integrated Circuit TPS92612QDBVRQ1

1.

LED yog ib hom tshiab ntawm kev ua tau zoo thiab ib puag ncig tus phooj ywg semiconductor lub teeb khoom siv.Piv nrog rau lwm qhov chaw teeb pom kev zoo, LED muaj qhov zoo tshaj plaws hauv tsheb teeb pom kev zoo thiab muaj kev cia siab rau daim ntawv thov dav.Cov kev sib txawv ntawm kev sib txuas ntawm LEDs hauv series thiab sib npaug los tsim cov arrays LED yog siv los ua kom tau raws li qhov yuav tsum tau muaj ntawm lub tsheb teeb pom kev zoo.

Nrog rau kev txhim kho thev naus laus zis thiab kev loj hlob sai ntawm kev lag luam kev lag luam, LED cov khoom lag luam tau siv dav hauv tib neeg lub neej.21 xyoo pua, LED ntau lawm thiab kev lag luam nplai tau mus txog qhov tsis tau pom dua, qhov tseem ceeb tshaj plaws kev lag luam ntawm LED yog ntau qhov chaw ntawm cov zaub, ntau hom xov tooj ntawm tes, thiab lwm yam.Tsis tas li ntawd, LEDs ua lub luag haujlwm tseem ceeb hauv txoj kev, teeb pom kev zoo vaj tsev, kho kom zoo nkauj sab hauv, thiab ntau qhov chaw.Nrog rau kev loj hlob sai ntawm kev lag luam tsheb, LED tsav tsheb circuits tau siv dav hauv cov khoom siv hluav taws xob niaj hnub, thiab cov khoom siv hluav taws xob yav dhau los xws li lub teeb taub hau tau maj mam hloov los ntawm lawv.Nyob rau tib lub sijhawm, LED muaj kev ua haujlwm siab luminous, lub sijhawm luv luv (cov lus teb ceev), cov qauv compact (me me), lub neej ua haujlwm ntev, thiab lwm yam ntxwv, nws yuav siv tau rau hauv lub teeb taws hauv tsheb thiab tseem muaj zog xim kev ntxub ntxaug thiab tiv thaiv. - glare yam ntxwv.Txawm li cas los xij, vim muaj kev txwv ntau yam, LED tseem muaj qee yam tsis xws luag, yuav tsum tau txuas ntxiv txhim kho LED thev naus laus zis, kom ua tau zoo dua cov kev xav tau ntawm cov khoom siv hluav taws xob hauv tsheb.

2.

LED yog ib qho khoom siv hluav taws xob semiconductor lub teeb emitting diode, uas yog tsim los ntawm qee yam khoom siv semiconductors.LED yog lub teeb pom kev zoo nrog kev ua haujlwm zoo rau kev co thiab kev poob siab, nws muaj kev tiv thaiv los ntawm epoxy resin cap, cov tub ntxhais yog me me, thiab cov tub ntxhais yog PN junction core, yog li nws muaj cov yam ntxwv ntawm PN hlws ris, piv txwv li rau pem hauv ntej conduction. , thim rov qab txiav tawm thiab overvoltage tawg, thiab lwm yam. Nyob rau hauv tej yam tshwj xeeb Nyob rau hauv tej yam tshwj xeeb tej yam kev mob, nws kuj yuav characterizes lub teeb emitter.

3.

LED tsav circuits muab faib ua ob hom tsav: tsis tu ncua voltage tsav thiab tsis tu ncua tam sim no tsav.Vim qhov tam sim no tsav tam sim no hom LED, nyob rau hauv cov qauv ntawm PN hlws ris-raws li, yuav ua tau ib tug exponential kev sib raug zoo los sawv cev rau lub LED voltage thiab tam sim no hloov, yog li nws yog siv ntau.Kev tsav tsheb tsis tu ncua-voltage feem ntau yog kev siv cov khoom siv hluav taws xob qis qis lossis kev hloov pauv cov kauj ruam-down lim, siv cov hluav taws xob tswj hluav taws xob diodes lossis hloov hluav taws xob hloov txoj kev, mus rau LED fais fab mov, tab sis cov yam ntxwv ntawm lub teeb LED yuav nyob rau tam sim no. tsis tu ncua hloov nyob rau hauv cov kev cuam tshuam.Lub linear regulator nyob rau hauv tas li tam sim no tsav txoj kev muaj ob hom: parallel thiab series, cov tub ntxhais yog lub hwj chim triode los yog MOSFET ua hauj lwm nyob rau hauv lub linear cheeb tsam raws li ib tug dynamically adjustable resistor los tswj lub load.qhov hluav taws xob thiab tam sim no ntawm ob qho kawg ntawm LED tsis yog kev sib raug zoo, tsis tuaj yeem siv ncaj qha los ntawm lub zog hluav taws xob, thiab yuav tsum tau txwv los ntawm kev txwv qhov tam sim no kom tsis txhob muaj ntau dhau tam sim no thiab zam kev puas tsuaj rau LED.LED luminous flux thiab tam sim no tsis yog Lub luminous flux tsis proportional rau tam sim no, lub luminous flux nce nrog rau tam sim no, lawv dais txawv degrees ntawm hluav taws xob fais fab, sab hauv kuj, thiab tej yam teeb meem tsis zoo li qub, yog li lawv siv tsis tau. ncaj qha nyob rau hauv parallel.Xaiv qhov raug thiab tsim nyog tsav hom yuav tsum xav txog daim ntawv thov thiab nws cov kev ua haujlwm rationality, rau txhua hom, yuav tsum xaiv nyob rau hauv lub switching fais fab mov tswj hom, daim ntawv thov ntau yog PFM, PWM hom, thiab swb zaj duab xis tswj, uas. Nws yog qhov yooj yim thiab hloov tau PWM tswj hom qauv, tuaj yeem tswj tau qhov zaus ruaj khov hauv kev ua haujlwm, tab sis kuj yuav tsum xav txog los ntawm kev txuag hluav taws xob ntawm qhov pom thiab lwm cov lus qhia, txhawm rau txhim kho LED qhov ci ntsa iab, thiab txo qis kev siv hluav taws xob LED.