Kev Paub Txog Switching Power Supply Chips
Hom nti no kuj yog hloov hom fais fab mov tswj nti, thiab cov qauv sab hauv tseem yog PWM tswj
Txawm li cas los xij, hom nti no muaj ntau qhov sib txawv tseem ceeb piv rau ib nrab ntawm cov khoom siv hluav taws xob hloov hluav taws xob
1. Lub input voltage ntau ntawm cov nti yog dav, feem ntau nyob ib ncig ntawm 10-30V, uas yog nyob ib ncig ntawm 4-60V
2. Lub input voltage ntau ntawm tag nrho lub tshuab yog tsawg. Feem ntau, qhov input voltage ntau ntawm cov khoom siv hluav taws xob yog nyob nruab nrab ntawm 100-400V, uas tau txais. Lub input voltage ntau ntawm tag nrho lub tshuab ua los ntawm cov nti no kuj yog nyob nruab nrab ntawm 4-60V
3. Cov tswv yim thiab cov zis tsis raug cais tawm. Feem ntau, cov input thiab output terminals ntawm switching fais fab mov yog cais. Lub zog tawm tswv yim thiab cov khoom tsim tawm los ntawm cov nti no tsis raug cais tawm, uas txhais tau hais tias lawv muaj ib qho av sib xws
4. Cov tsav tsheb sib txawv. Feem ntau, cov nti tso zis tsav tsheb ntawm lub zog hloov pauv tsav N-hom MOSFETs, thaum qhov tso zis no tsav P-hom MOSFETs
5. Qhov xwm ntawm input voltage yog txawv. Feem ntau, hloov cov khoom siv hluav taws xob yog tsim los hloov mus rau AC lub ntsiab lus nkag, thaum lub nti no tau tsim los hloov kho rau DC lub zog nkag. Qhov no kuj yog vim li cas lub nti no hu ua DC-DC nti. Ntawm chav kawm, yog tias cov nti no tau nruab nrog tus choj rectifier thiab capacitor lim kom dhau los ua DC thiab tom qab ntawd muab lub zog, nws kuj tseem ua tau. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum tau them sai sai rau qhov input voltage ntau. Qhov siab tshaj plaws DC input ntau yam ntawm 60V yog sib npaug rau AC 42V, uas tsis muaj txiaj ntsig zoo hauv kev coj ua rau kev hloov pauv cov khoom siv hluav taws xob nrog AC 42V input thiab tsis muaj kev sib cais,
