Diodes Inc. inotarisira kuti mutongi mutsva ave akakodzera kune zvikumbiro apo magetsi anogara aripo kana kuti anogara aripo anodiwa kutyaira zviratidzo uye backlights.Padivi reLCD, izvi zvinogona kusanganisira kushandiswa semutyairi webacklight weLCD TVs, LCD monitors, uye flat panel displays.Padivi re LED, izvo zvinogona kureva kushandiswa semutyairi we LED kune zvekutengesa magetsi maapplication.
Chishandiso ichi chinogadzika magetsi ekuisa kubva pa9V kusvika ku40V.Izvi zvinoibvumira kuchinjika nyore kune akasiyana siyana emagetsi ekupa, akadai se12V, 24V, uye 36V, pasina kumwe kugadziridzwa kana kurasikirwa kwekuita.
Iyo dimming level inodzorwa nedhijitari PWM (pulse wide modulation) yekuisa, iyo inoshandurwa kuita analog voltage kuti iite kutonga kweiyo dimming chaiyo.Iyo AL3353 inogona kutsigira masaini ePWM ane mafambiro kubva pa5kHz kusvika 50kHz.
Pamusoro pezvo, iyo AL3353 inochengetedza mutsara pane tembiricha uye maitiro akasiyana.Izvi zvinopedzwa kuburikidza nekushandiswa kweDiodes' dynamic linearity compensation technique, iyo inoshandisa offset kukanzura chekucheka wedunhu.
Iyo AL3353 ine PWM inosimudzira mutyairi inoshandisa yazvino modhi yekudzora uye yakagadziriswa frequency kushanda kugadzirisa iyo LED ikozvino.Iyo LED ikozvino inopfuura nekunze kwezvino sensor resistor.Iyo voltage pane yekunzwa resistor inozoenzaniswa neyereferensi ye400mV.Musiyano uripo pakati pemavhiri maviri unoshandiswa kudzora hupamhi hwekupuruzira kwesimba switch, uye kubvumira kudzorwa kweiyo ikozvino inoyerera kuburikidza ne LED.
Iyo AL3353 inogona zvakare kushandiswa mumamiriro ezvinhu anoda kubuda magetsi ekudzora, pane kuburitsa ikozvino kutonga.Inozviita nekuita zviyero nemhinduro resistor network yakabatana neiyo mudziyo inobuda terminal.
Kuti izvidzivirire uye ma LED ayo inodzora, iyo AL3353 inosanganisira mamwe akakosha ekuchengetedza maficha.Izvi zvinosanganisira:
Iyo AL3353 inogona kutsiva akawanda discrete zvikamu uye inogona kuderedza BOM mutengo, pamwe nekudzikisa bhodhi nzvimbo nehukuru hwayo hudiki:
Tichifunga nezvekushandisa kwechikamu ichi, hazvishamisi kuti kune vamwe vanopinda mundima iyi.Uye, nepo AL3353 ichipa imwe inobuda, vamwe vagadziri vanopa zvikamu zvinosvika zvina zvinobuda.Heano mashoma:
Nguva yekutumira: May-29-2019