Kev ua haujlwm ntau dua thiab kev ua haujlwm ntawm cov khoom siv hluav taws xob, qhov nyuaj ntawm nws cov qauv, thev naus laus zis, thiab qhov system. Qhov nyuaj dua nws yog rau cov tsoos analog fais fab tswj ICs kom tau raws li tag nrho cov kev cai tswj fais fab ntawm lub cev, thiab qhov kim dua. Lub hauv paus ntawm lub digital controller yog tsim los ntawm peb qhov tshwj xeeb modules: anti-aliasing filter, analog-to-digital converter (ADC) thiab digital pulse width modulator (DPWM). Txhawm rau kom ua tiav qhov kev ua tau zoo ib yam li cov qauv tswj hwm analog, nws yuav tsum muaj kev daws teeb meem siab, kev kub ceev thiab linear ADC thiab kev daws teeb meem siab, kev kub ceev PWM Circuit Court tsim.
Qhov kev daws teeb meem ADC yuav tsum muaj peev xwm ua tau raws li qhov ntau qhov kev ua yuam kev tsawg dua li qhov tso cai hloov pauv ntawm qhov tso zis hluav taws xob. Qhov me dua qhov yuav tsum tau tso zis voltage ripple, qhov siab dua qhov kev daws teeb meem ntawm ADC. Nyob rau tib lub sijhawm, vim tias cov ntxaij lim dej los tiv thaiv lub cev thiab cov raj xa dej lossis SAR analog-rau-digital converters yuav qhia txog lub voj voog qeeb, peb xav tau ceev-sampling-rate analog-to-digital converters. Analog controllers muaj cov kev txwv tsis pub muaj nyob ntawm qhov ua tau ntawm cov mem tes dav uas tuaj yeem tsim tau, thaum DPWM tuaj yeem tsim cov kev sib cais thiab txwv tsis pub muaj PWM dav.
Los ntawm qhov kev xav ntawm cov zis nyob rau hauv lub xeev khov kho, tsuas yog ib txheej ntawm cov zis hluav taws xob discrete tuaj yeem ua tau. Txij li thaum DPWM yog ib feem ntawm lub voj kev tawm tswv yim, qhov kev daws teeb meem ntawm DPWM yuav tsum siab txaus kom cov zis tsis tso tawm qhov paub zoo txog qhov txwv lub voj voog tus nqi. Qhov tsawg kawg nkaus tus lej yuav tsum tsis txhob tso tawm ib qho kev txwv tus nqi yog nyob ntawm topology, tso zis voltage thiab ADC daws teeb meem. Nyob rau tib lub sijhawm, lub voj ruaj khov ntawm lub kaw lus raug kho los ntawm PI lossis PID maub los.
