Zosintha mitundu yosinthira, zabwino kwambiri bolodi losindikizidwa Kapangidwe ka (PCB) ndikofunikira pakuchita bwino kwa machitidwe. Ngati mapangidwe a PCB ndiosayenera, atha kubweretsa zotsatirazi: phokoso lalikulu ku dera loyendetsa ndikukhudza kukhazikika kwadongosolo; Kuchulukitsa kwakukulu pamtundu wa PCB kumakhudza dongosolo; Kuyambitsa kusokonezedwa kwamagetsi kwamagetsi kwambiri ndikukhudza magwiridwe antchito.

ZXLD1370 ndimitundu yambiri yamagetsi yosinthira mawotchi oyendetsa ma driver a driver, topology iliyonse yosiyanasiyana imaphatikizidwa ndi zida zakunja zosinthira. Woyendetsa galimotoyo ndi woyenera buck, mphamvu kapena buck – boost mode.

Pepala ili litenga chida cha ZXLD1370 ngati chitsanzo kuti akambirane malingaliro a kapangidwe ka PCB ndikupereka malingaliro oyenera.

Ganizirani za kukula kwake

Pogwiritsa ntchito ma circuits opangira magetsi, switch yayikulu ndi zida zamagetsi zogwirizana zimanyamula mafunde akulu. Zotsatira zomwe zimagwiritsidwa ntchito kulumikiza zida izi zimakhala ndi zotsutsana ndi makulidwe awo, m’lifupi mwake, ndi kutalika. Kutentha komwe kumachitika chifukwa cha zomwe zikuchitika tsikuli sikuti kumangochepetsa kugwiranso ntchito komanso kumakweza kutentha kwakusaka. Kuti muchepetse kutentha, ndikofunikira kuonetsetsa kuti kuchuluka kwake ndikokwanira kuthana ndi kusinthaku kwaposachedwa.

Equation yotsatirayi ikuwonetsa ubale womwe ulipo pakukwera kwanyengo ndikutsata magawo azigawo.

Zotsatira zamkati: I = 0.024 × Malangizo a DT & 0.44; A 0.725

Ine = 0.048 × Malangizo a DT & 0.444; A 0.725

Kumene, ine = pazomwe zilipo (A); DT = kutentha kumakwera kuposa chilengedwe (℃); A = gawo logawikana (MIL2).

Tebulo 1 likuwonetsa kutsika kwakanthawi kochepa pakatundu wofananira. Izi zimachokera pazotsatira zowerengera za 1oz / FT2 (35μm) zojambulazo zamkuwa ndi kutentha komwe kumakwera 20oC.

Gulu 1: Kutambalala kwakunja kwakatundu ndi mphamvu zapano (20 ° C).

Gulu 1: Kutambalala kwakunja kwakatundu ndi mphamvu zapano (20 ° C).

Pogwiritsa ntchito makina osinthira magetsi opangidwa ndi zida za SMT, mawonekedwe amkuwa pa PCB amathanso kugwiritsidwa ntchito ngati choziziritsira cha zida zamagetsi. Kuchepetsa kutentha chifukwa chakupititsa patsogolo kuyenera kuchepetsedwa. Ndikulimbikitsidwa kuti kutsika kwakanthawi kochepa kungapitirire 5 ° C.

Tebulo 2 likuwonetsa kutsika kwakanthawi kochepa pakatundu wofananira. Izi ndizotengera zotsatira za ziwerengero za 1oz / ft2 (35μm) zojambulazo zamkuwa zomwe zimapangitsa kutentha kutentha kukwera 5oC.

Gulu 2: Kutambalala kwakunja kwakatundu ndi mphamvu zapano (5 ° C).

Gulu 2: Kutambalala kwakunja kwakatundu ndi mphamvu zapano (5 ° C).

Ganizirani masanjidwe ake

Kapangidwe kake kamayenera kukonzedwa bwino kuti akwaniritse bwino driver wa ZXLD1370 LED. Maupangiri otsatirawa amathandizira kuti mapulogalamu a ZXLD1370 akonzedwe kuti azitha kugwira bwino ntchito zonse mu tonde tomwe timathandizira.