Nrhiav Rau
Nrhiav yam koj xav tau
Qhov hluav taws xob ua haujlwm ntawm cov khoom siv hluav taws xob sib txawv xws li ICs tuaj yeem sib txawv ntawm ntau yam, ua rau nws tsim nyog los muab qhov hluav taws xob rau txhua lub cuab yeej.
Ib lub Buck Converter tso tawm qhov hluav taws xob qis dua li qhov hluav taws xob qub, thaum lub Boost Converter muab qhov hluav taws xob siab dua. DC-DC converters kuj tseem hu ua linear lossis switching regulators, nyob ntawm txoj kev siv rau kev hloov pauv.
AC piv rau DC
AC yog dab tsi?
Luv rau Alternating Current, AC txhais tau tias tam sim no uas hloov pauv qhov loj thiab polarity (orientation) nrog lub sijhawm.
Nws feem ntau yog qhia hauv Hertz (Hz), lub chav SI ntawm zaus, uas yog tus lej ntawm cov oscillations ib ob.
DC yog dab tsi?
DC, uas sawv cev rau Direct Current, yog tus cwj pwm los ntawm tam sim no uas tsis hloov pauv hauv polarity dhau sijhawm.
Cov khoom siv hluav taws xob uas ntsaws rau hauv qhov hluav taws xob xav tau lub tshuab hloov AC-DC los hloov ntawm AC mus rau DC.
Qhov no yog vim tias feem ntau cov khoom siv semiconductor tsuas yog ua haujlwm siv DC xwb.
ICs thiab lwm yam khoom siv uas tau teeb tsa rau ntawm cov khoom siv uas siv hauv cov teeb tsa muaj cov yam ntxwv tshwj xeeb ntawm kev ua haujlwm voltage uas xav tau qhov tseeb ntawm voltage sib txawv.
Cov khoom siv hluav taws xob tsis ruaj khov lossis tsis raug tuaj yeem ua rau cov yam ntxwv puas tsuaj thiab txawm tias ua haujlwm tsis zoo.
Yuav kom tiv thaiv qhov no, xav tau lub DC-DC converter los hloov thiab tswj lub voltage.
DCD converters yog tsim los ua kom tau raws li qhov xav tau ntawm cov tsheb fais fab niaj hnub, nrog kev ua haujlwm siab, kev ntseeg siab, thiab qhov loj me me.DCD converterCov khoom siv uas peb muab yog sib xws nrog ntau yam roj teeb voltages thiab tuaj yeem xa hluav taws xob rau ntau yam tsheb, xws li teeb pom kev zoo, suab, thiab HVAC.
Peb cov khoom lag luam tau tsim los ua kom tau raws li cov qauv tsheb rau kev nyab xeeb thiab kev ntseeg siab, nrog rau cov yam ntxwv xws li kev tiv thaiv overcurrent, kev tiv thaiv overvoltage, thiab thermal shutdown. Peb cov DCDC converters tau txais kev pom zoo los ntawm cov tuam txhab tsim tsheb loj thiab siv rau hauv ntau hom tsheb fais fab.
Cov hloov pauv DCDC yog cov khoom tseem ceeb hauv cov tsheb fais fab, xa cov hwj chim zoo thiab txhim khu kev qha rau cov khoom siv tsheb thiab cov tshuab them hluav taws xob.
