Inganta shimfidar PCB yana inganta aikin juyawa

Don masu juyawa yanayin juyawa, yana da kyau buga kewaye hukumar (PCB) shimfidawa yana da mahimmanci don ingantaccen tsarin aiki. Idan ƙirar PCB ba daidai ba ce, yana iya haifar da sakamako masu zuwa: yawan hayaniya zuwa da’irar sarrafawa kuma yana shafar kwanciyar hankali na tsarin; Yawan asara akan layin gano PCB yana shafar tsarin aiki; Sanadin katsalandan na lantarki mai yawa kuma yana shafar tsarin tsarin.

ZXLD1370 yanayi ne mai sauyawa da yawa topology mai sarrafa direban LED, kowane topology daban-daban an saka shi tare da na’urorin juyawa na waje. Direban LED ya dace da buck, boost or buck – boost mode.

ipcb

Wannan takarda za ta ɗauki na’urar ZXLD1370 a matsayin misali don tattauna sharuddan ƙirar PCB da bayar da shawarwari masu dacewa.

Yi la’akari da faɗin faɗin

Don juyawa hanyoyin samar da wutan lantarki, babban juyawa da na’urorin wutar lantarki masu alaƙa suna ɗaukar manyan igiyoyi. Alamar da aka yi amfani da ita don haɗa waɗannan na’urori suna da tsayayya da suka shafi kaurin su, faɗin su, da tsayin su. Zafin da ake samu ta halin yanzu da ke gudana ta cikin alama ba kawai yana rage inganci ba amma kuma yana ɗaga yanayin zafin. Don iyakance hauhawar zafin jiki, yana da mahimmanci don tabbatar da cewa faɗin alamar ya isa don jimre da ƙimar sauyawar da aka ƙaddara.

Ƙididdigar da ke tafe tana nuna alaƙar da ke tsakanin haɓakar zafin jiki da alamar yanki.

Alamar cikin gida: I = 0.024 × DT & 0.44 TImes; A 0.725

Ina = 0.048 × DT & 0.444 TImes; A 0.725

Inda, I = matsakaicin halin yanzu (A); DT = zazzabi ya tashi sama da muhalli (℃); A = yankin giciye (MIL2).

Teburin 1 yana nuna mafi ƙarancin faɗin faɗin don ƙarfin dangi na yanzu. Wannan ya dogara ne akan sakamakon ƙididdiga na 1oz/ FT2 (35μm) takardar jan ƙarfe tare da alamar zazzabi yana tashi 20oC.

Tebur 1: Faɗin faɗin waje da ƙarfin yanzu (20 ° C).

Tebur 1: Faɗin faɗin waje da ƙarfin yanzu (20 ° C).

Don aikace -aikacen canza yanayin wutar lantarki yanayin da aka ƙera tare da na’urorin SMT, saman jan ƙarfe akan PCB kuma ana iya amfani dashi azaman matattarar zafi don na’urorin wuta. Ya kamata a rage girman zafin da aka gano saboda yadda ake gudanar da shi. An ba da shawarar cewa a ƙara iyakance yawan zafin jiki zuwa 5 ° C.

Teburin 2 yana nuna mafi ƙarancin faɗin faɗin don ƙarfin dangi na yanzu. Wannan ya dogara ne akan sakamakon ƙididdiga na 1oz/ft2 (35μm) takardar jan ƙarfe tare da alamar zafin da ke tashi 5oC.

Tebur 2: Faɗin faɗin waje da ƙarfin yanzu (5 ° C).

Tebur 2: Faɗin faɗin waje da ƙarfin yanzu (5 ° C).

Yi la’akari da shimfidar wuri

Dole ne a tsara shimfidar alama yadda yakamata don cimma mafi kyawun aikin direban LED na ZXLD1370. Sharuɗɗan masu zuwa suna ba da damar ZXLD1370 tushen aikace -aikacen da za a tsara don matsakaicin aiki a cikin buck da haɓaka halaye.