Cia peb paub txog kaum lub tswv yim tshiab LED tsav tsheb hauv ntiaj teb peb xyoos dhau los.
1. Peb-channel linear LED tsav tsheb
Daim ntawv thov teb: Automotive Teeb pom kev zoo
Nyob rau lub Rau Hli ntawm lub xyoo no, Diodes Incorporated tau tshaj tawm peb-channel linear LED tsav tsheb AL5873Q, uas lub hom phiaj kom yooj yim rau kev tsim cov pab pawg teeb pom kev zoo thiab nthuav nws cov khoom siv los txhawb lub tsheb sab nrauv teeb pom kev zoo.
Cov cuab yeej siv tau nrog lub tsheb thiab ua tau raws li AEC-Q100 qib 1 tus qauv, uas tuaj yeem ua tau raws li cov kev xav tau ntawm kev tsim lub tsheb tshiab tom ntej thaum txuag lub zog thiab qhov chaw, yog li txo cov nqi tag nrho. Txhua channel ntawm AL5873Q tuaj yeem tsav mus txog 250mA ntawm tam sim no, uas tau teeb tsa los ntawm ob qhov kev siv resistors txuas nrog REF1 thiab REF2 tus pins ntawm tus tsav tsheb sib txuas. Nws txhawb nqa ob theem sib txawv ntawm LED tam sim no, ua rau lub teeb pom kev zoo dua.
AL5873Q muaj analog thiab tswv PWM dimming tswj kev ua haujlwm thiab txhawb nqa pulse width modulation (PWM) zaus mus txog 1 kHz. Thaum tsav tsheb LEDs ntawm qhov qis tam sim no, PWM dimming muaj nuj nqi yog qhov tseem ceeb rau kev txhim kho qhov tseeb tam sim no. Qhov tam sim no ntawm txhua lub channel ntawm cov cuab yeej tuaj yeem ua tau raws li qhov ua siab ntev ntawm ± 4 feem pua, ua rau lub teeb sib txuas tom qab kom ua tiav cov channel zoo dua.
2. Multi-mode ntse dimming LED tsav tsheb
Daim ntawv thov teb: Sab Hauv Tsev Teeb pom kev zoo hauv qhov chaw loj
Nyob rau lub Rau Hli ntawm lub xyoo no, ON Semiconductor tau tshaj tawm ob lub cuab yeej tshiab, NCL31000 thiab NCL31001 LED tsav tsheb uas tuaj yeem txhim kho kev ua haujlwm ntawm cov teeb pom kev sib cuam tshuam, ua rau cov tuam txhab tsim cov teeb pom kev zoo nrog lub teeb pom kev zoo thiab pom kev sib txuas lus. Cov kev daws teeb meem no nce cov ntaub ntawv kev txawj ntse thiab qhov tseeb qhov chaw (txog 30 cm), thiab yuav hloov kho lub teeb pom kev zoo ntawm ntau qhov chaw suav nrog cov khw muag khoom loj, warehouses, tsev kho mob, thiab tshav dav hlau.
NCL31000 yog tsim tshwj xeeb rau kev siv teeb pom kev zoo, txhawb nqa high-bandwidth analog dimming thiab qis-rau-zero tam sim no PWM dimming. Cov cuab yeej tsav muaj kev sib xyaw ua ke 3V3 DC-DC hloov pauv thiab hloov kho DC-DC ntxiv (2.5 txog 24V), uas tuaj yeem siv rau cov khoom siv hluav taws xob xws li kev hnov lus thiab microcontrollers, thiab los ntawm kev sib txuas ntau lub zog, kev daws teeb meem yog kev sib xyaw ua ke. nyob rau hauv lub tsav, uas zoo heev simplifies lub system tsim thaum txhim kho lub zog efficiency.
Qhov tseem ceeb tshaj, NCL31000 qhov tseeb linear dimming enables pom lub teeb kev sib txuas lus (VLC) thiab txhawb txoj kev loj hlob ntawm lub teeb-raws li nyob rau hauv tsev qhov chaw, uas yog haum rau ntau qhov chaw uas RF-raws li kev daws teeb meem tsis siv tau (xws li qhov chaw txaus ntshai xws li mines thiab lwm yam xov tooj cua. -frequency rhiab qhov chaw xws li tsev kho mob thiab dav hlau).
NCL31001, ua tus tsav tsheb txhawb nqa rau NCL31000, tuaj yeem muab cov yam ntxwv zoo ib yam li NCL31000, thiab tib lub sijhawm, nws txuas nrog NCL31000 los tsim cov kev daws teeb meem uas txhawb nqa ntau txoj hlua teeb pom kev zoo, qhib kev lag luam tshiab ntxiv rau cov teeb pom kev zoo.
