Lub evolution ntawm automotive teeb pom kev zoo tau ncua ntau xyoo lawm. Nyob rau hauv lub hnub nyoog ntawm lub teeb-emitting diode (LED) teeb pom kev zoo, kev cia siab rau tag nrho cov teeb tsim tsis tau siab dua; Cov kev cia siab no tau nce cov kev hloov pauv thev naus laus zis ntawm LED tsav tsheb hauv kev lag luam semiconductor. Niaj hnub no, automotive teeb pom kev zoo yuav tsum tau ib tug high-zoo homogenous tsim kom paub superior zoo tsis tau tsuas yog nyob rau hauv headlamps, tab sis kuj nyob rau hauv rear teeb.
Yav dhau los, txoj hauv kev kom ua tiav qhov ci ci ntau dua yog ua kom cov LEDs ntau ntxiv. Tab sis yog tias koj rhuav tshem lub teeb tom qab tshiab tam sim no, koj yuav pom ntau lub teeb qhia, lub teeb kav dej, lub teeb thaiv thiab lwm yam teeb pom kev zoo kom ua tiav cov teeb pom kev zoo dua. Nrog rau kev hloov pauv saum toj no, LEDs tsawg dua tab sis siab dua tam sim no ntawm txhua LED yuav tsum tau.
Cov neeg tsim qauv siv kev hloov-hom LED tsav tsheb los tsav lub siab tam sim no rau txhua qhov LED. Tab sis nyob rau hauv automotive rear ua ke teeb (RCLs), lub siab switching zaus yuav cuam tshuam ntau nrog antennas, ua rau electromagnetic cuam tshuam (EMI) thiab electromagnetic compatibility (EMC). Thaum siv linear LED tsav tsheb, siab zog dissipation nyob rau hauv lub LED tsav tsheb nws tus kheej yuav muaj feem xyuam rau lub neej ntawm tag nrho cov teeb.
TI muaj peb-channel tshiab, siab-sab, tas li-tam sim no automotive linear LED maub los uas tuaj yeem pab daws cov teeb meem no. Daim duab 1 qhia txog schematic ntawm lub cuab yeej, TPS92830-Q1.
TI tshem tawm cov hlau-oxide semiconductor field-effect transistors (MOSFETs) sab hauv ntawm lub cuab yeej kom tso cai rau koj txiav txim siab seb hom MOSFET koj xav tau rau tag nrho RCL system raws li cov zis tam sim no. Txoj kev no, koj tuaj yeem tsim teeb pom kev zoo dua tom qab los ntawm kev siv ib lossis ob daim ntawm TPS92830-Q1 ua ke nrog cov MOSFETs sab nraud kom xa mus txog 250mA lossis 300mA ib channel.
Qhov kev tsim kho tshiab no tseem tso tawm cov cua sov ntawm lub cuab yeej nws tus kheej kom ua kom zoo dua tag nrho cov txheej txheem thermal ua haujlwm. Vim tias qhov kev tsim kho tshiab no, koj tuaj yeem siv TPS92830-Q1 los tsav tsheb nres, taillights, tig teeb, txoj hauj lwm teeb thiab txawm tias nruab hnub nrig (DRL) s. Nws nyob ntawm seb qhov loj npaum li cas ntawm MOSFETs sab nraud koj yuav xav tau rau koj tus qauv tsim.
Lub caij no, TPS92830-Q1 kuj tseem ua ke nrog lub siab-precision on-chip pulse-width modulation (PWM) generator. Nws yog qhov tseeb heev tias qhov kam rau ua yog tsawg li 2% uas ua rau kev lag luam thiab pab koj ua tiav cov qauv zoo sib xws ntawm txhua lub teeb. Nws yog qhov tsim nyog rau kev tsim kom muaj cov teeb sib cais ntawm lub cev thiab lub fender. Qhov txawv ntawm qhov ci ntawm ob lub teeb yog undetectable rau tib neeg lub qhov muag. Koj tuaj yeem xaiv ntawm on-chip PWM teeb liab thiab sab nraud PWM teeb liab raws li qhov system architecture.
Cov cuab yeej muaj kev tiv thaiv zoo tshaj plaws thiab nrhiav kom pom cov yam ntxwv kom ntseeg tau tias koj tus qauv tsim ua tau raws li txhua yam khoom siv hauv tsheb (OEM) cov cai xws li LED qhib, LED luv luv thiab ib qho tsis ua haujlwm-tag nrho-ua tsis tiav. TPS92830-Q1 kuj tseem txhawb nqa kev ua haujlwm tam sim no, uas tiv thaiv MOSFETs sab nraud nyob rau hauv cov khoom siv hluav taws xob siab kom ntseeg tau qhov system.
