Nekuda kweiyo VF kukosha maitiro eLEDs, humwe hutsika hweVF huchachinja nekudziya uye ikozvino, iyo kazhinji isingakodzeri dhizaini yakafanana.Nekudaro, mune zvimwe zviitiko, isu tinofanirwa kugadzirisa dambudziko rekutyaira mutengo weakawanda ma LED mune zvakafanana.Aya madhizaini anogona kushandiswa sereferensi.

Ziva kuti kukosha kweVF kunoda kukamurwa kuita mamakisi.Iwo maLED ane kukosha kwakafanana kweVF anofanirwa kushandiswa pachigadzirwa chimwe chete sezvinobvira.Chigadzirwa chinogona kuve nechokwadi chekuti chikanganiso chazvino chiri mukati me1mA uye iyo LED iri mune inongogara iripo.

Kushandisa yakasanganiswa triodes inogona kuchengetedza ikozvino yega yegaLED inowirirana.Aya matriode anogadzirwa pasi pemamiriro ekushisa akafanana uye mamiriro ekuita maitiro β Ukoshi hwakafanana hunogona kuona kuti ikozvino imwe neimwe yakafanana.Chikamu chenguva dzose chemazuva ano chinogona kugadzirwa nenzira iyi kana zvinodiwa zvisiri zvakanyanya.Voltage yakagadzikana kana yakagadzikana PWM voltage value inotyaira yakagadzikana triode bias voltage kuti iwane yakakosha inogara iripo.

Uchishandisa IC ine chokwadi chepamusoro seyagara iripo ikozvino referensi sosi, R inogona kuseta iyo IC inobuda ikozvino.Kamwe kukosha kweR kuramba kwakatemwa, inogona kutsiviwa neyakagadzika kuramba.Iko kushandiswa kwema-multi-triode akabatanidzwa michina inogona kuderedza kushandiswa kweIC, nokudaro kuderedza mutengo wezvigadzirwa zvekugadzira.

Linear yakakwirira-simba LED inogara iripo ikozvino kuburitsa inogona kushandiswa yakafanana.Mukugadzirwa kwechigadzirwa, isu kazhinji hatigone kuwana yekutyaira IC ine yakakura ikozvino.Kazhinji, kashoma kuona IC ine zita rekuti 2A kana pamusoro, uye IC ine zita rekuti 2A inogona kusashandiswa kusvika painogumira.Chikonzero chemutengo weIC process yakakura kupfuura 1a ndechekuti MOS machubhu ari kunze, uye yekunze MOS chubhu yedunhu yakaoma uye kuvimbika kwakaderedzwa.Parallel operation inzira inoshanda yekugadzira.

Dd312 parallel reference dhizaini inogamuchirwa kutyaira zvakananga matatu 6wled.Kugonesa masaini ekutonga ePWM kunoda kuzviparadzanisa nevamwe kudzivirira kupindirana uye matambudziko ekutyaira.Iyo en inogonesa voltage inofanirwa kusangana nezvinodiwa zveiyo yakatarwa, uye usakuvadza iyo EN pini yakakwira zvakanyanya.Kazhinji, IC inomira voltage inoreva kurodha uye magetsi ekupa.Kana pasina chinoratidza chekusimudzira magetsi, ndapota usapfuure 5V dhizaini.

Kune rudzi urwu rwekuonekwa, theLED nguva dzoseikozvino dhiraivha IC kune imwe mugumo we LED inogona zvakare kugadzirwa uye inotyairwa mukufanana.Muchokwadi, iyo IC inoshanda yega uye pakupedzisira inoshanda pamwechete mukufanana.Iyo DC-DC modhi inoshanda pamwero wepamusoro.Izvo zvinofanirwa kucherechedzwa kuti iyo PCB dhizaini inofanirwa kudzivirira muchinjiko dhizaini.Iyo inoteedzana sefa uye bypass capacitors inofanirwa kunge iri padyo neIC, uye mutoro wazvino unozopedzisira wasanganiswa.