Okokuguqula imodi yokuguqula, kuhle kakhulu ibhodi yesifunda ephrintiwe Ukuhlelwa kwe (PCB) kubalulekile ekusebenzeni kahle kohlelo. Uma ukwakheka kwe-PCB kungalungile, kungadala imiphumela elandelayo: umsindo omningi kakhulu kusekethe yokulawula futhi uthinte ukuzinza kohlelo; Ukulahlekelwa okweqile kumugqa we-PCB trace kuthinta ukusebenza kahle kohlelo; Kubangela ukuphazamiseka ngokweqile kwe-electromagnetic futhi kuthinte ukuhambisana kwesistimu.

I-ZXLD1370 iyi-multi-topology switching mode driver driver, i-topology ehlukile ngayinye ishunyekwe ngamadivayisi wangaphandle wokushintsha. Umshayeli we-LED ulungele imodi ye-buck, boost noma ye-buck – boost.

Leli phepha lizothatha idivayisi ye-ZXLD1370 njengesibonelo sokuxoxa ngokucatshangelwa kwe-PCB design nokunikeza iziphakamiso ezifanele.

Cabanga ngobubanzi bokulandela

Ngokushintsha amasekhethi wokunikezwa kwamandla emodi, inkinobho enkulu namadivayisi ahambisanayo ahamba nemisinga emikhulu. Iminonjana esetshenziselwa ukuxhuma lawa madivayisi inokumelana okuhlobene nokushuba kwawo, ububanzi, nobude bawo. Ukushisa okwenziwe manje okugeleza ngomkhondo akugcini nje ngokunciphisa ukusebenza kahle kepha futhi kukhulisa nokushisa komkhondo. Ukunciphisa ukukhuphuka kwezinga lokushisa, kubalulekile ukuqinisekisa ukuthi ububanzi bethrekhi banele ukubhekana namandla wokushintsha okulinganiselwe.

I-equation elandelayo ibonisa ubudlelwano phakathi kokukhuphuka kwezinga lokushisa nokulandela umkhondo wendawo enqamulelayo.

Ukulandela kwangaphakathi: I = 0.024 × Ama-TImes we-DT & 0.44; A 0.725

Mina = 0.048 × Ama-TImes we-DT & 0.444; A 0.725

Kuphi, I = esiphezulu samanje (A); I-DT = izinga lokushisa likhuphuka liphakeme kunemvelo (℃); Indawo ehlukanisayo (MIL2).

Ithebula 1 likhombisa ubuncane bokulandela ngomthamo wamanje ohlobene. Lokhu kususelwa kwimiphumela yezibalo ze-1oz / FT2 (35μm) foil yethusi nge-trace lokushisa elinyuka ngama-20oC.

Ithebula 1: Ububanzi bokulandela kwangaphandle namandla wamanje (20 ° C).

Ithebula 1: Ububanzi bokulandela kwangaphandle namandla wamanje (20 ° C).

Ngokushintsha izinhlelo zokusebenza zokuguqula amandla emodi ezenzelwe amadivayisi we-SMT, indawo yethusi ku-PCB nayo ingasetshenziswa njengendawo yokushisa yamadivayisi kagesi. Ukunyuka kwamazinga okushisa ngenxa yokuqhutshwa kwamanje kufanele kuncishiswe. Kunconywa ukuthi ukukhuphuka kwezinga lokushisa kukhawulelwe ku-5 ° C.

Ithebula 2 likhombisa ubuncane bokulandela ngomthamo wamanje ohlobene. Lokhu kusekelwe emiphumeleni yezibalo ye-1oz / ft2 (35μm) foil foil enezinga lokushisa elilandayo elinyuka ngo-5oC.

Ithebula 2: Ububanzi bokulandela kwangaphandle namandla wamanje (5 ° C).

Ithebula 2: Ububanzi bokulandela kwangaphandle namandla wamanje (5 ° C).

Cabanga ngokuhlelwa komkhondo

Ukuhleleka komkhondo kumele kuklanywe kahle ukufeza ukusebenza okuhle komshayeli we-ZXLD1370 LED. Imihlahlandlela elandelayo inika amandla izinhlelo ezisekelwe ku-ZXLD1370 ukuthi zenzelwe ukusebenza okuphezulu kuzo zombili izindlela zebuck nezokuqinisa.