Yuav daws cov suab nrov ntawm kev hloov hluav taws xob li cas
Fais fab tuag, me me, tus nqi qis, thiab kev ua haujlwm siab ua rau nws muaj txiaj ntsig zoo.
Txawm li cas los xij, nws qhov teeb meem loj tshaj plaws yog lub suab nrov nrov vim muaj kev hloov pauv siab. Nws yog qhov tsis txaus no uas tiv thaiv lawv los ntawm kev siv cov khoom siv hluav taws xob zoo analog uas feem ntau siv los ntawm cov kab hluav taws xob.
Txawm li cas los xij, nws tau raug pov thawj tias nyob rau hauv ntau daim ntawv thov ib qho kev hloov pauv hloov tau zoo tuaj yeem hloov tau cov kab hluav taws xob los tsim cov suab nrov qis.
Yog li ntawd, nws yog ib qhov tsim nyog los tsim ib qho optimized thiab damped multi-theem lim kom tshem tawm cov suab nrov ntawm lub converter fais fab hloov.
Cov piv txwv hauv kab lus no yuav siv lub zog hloov pauv, tab sis cov txiaj ntsig tuaj yeem siv ncaj qha rau txhua lub DC-DC converter. Daim duab 1 qhia txog qhov yooj yim waveforms ntawm boost converter nyob rau hauv tas li tam sim no hom (CCM).
Daim duab 1. Basic Voltage thiab Tam sim no Waveforms ntawm Boost Converter
Cov zis lim yog ib qho tseem ceeb rau lub boost topology, los yog lwm yam topology nrog discontinuous tam sim no hom, vim hais tias ntawm lub ceev ceev thiab lub caij nplooj zeeg lub sij hawm ntawm lub tam sim no hloov B. Qhov no ua rau parasitic inductance nyob rau hauv lub excitation keyboards, layout, thiab output capacitors. Qhov tshwm sim yog tias nyob rau hauv kev siv tiag tiag, cov zis waveform zoo li daim duab 2 ntau dua li daim duab 1, txawm tias muaj cov qauv zoo thiab cov khoom tso tawm ceramic.
2. Cov qauv ntsuas waveforms ntawm lub boost converter hauv DCM
Lub switching ripple (hloov zaus) vim qhov kev hloov pauv ntawm tus nqi capacitor yog qhov me me heev piv rau qhov tsis muaj suab nrov ntawm cov zis hloov pauv, tom qab ntawd hu ua suab nrov. Feem ntau, cov suab nrov no tawm ntawm 10 MHz mus rau ntau tshaj 100 MHz, zoo tshaj qhov nws tus kheej resonant zaus ntawm feem ntau cov khoom siv hluav taws xob ceramic. Yog li ntawd, ntxiv capacitance tsis ua ntau rau lub suab nrov attenuation.
Kuj tseem muaj ntau hom lim uas haum rau lim cov zis no. Peb yuav piav qhia txhua lub lim thiab muab cov qauv tsim los ntawm kauj ruam.
Cov qauv hauv daim ntawv no tsis nruj, thiab qee qhov kev xav tsim nyog tau tsim los ua kom cov qauv no yooj yim rau qee yam. Qee qhov kev rov ua dua tseem xav tau, vim tias txhua qhov cuam tshuam cuam tshuam rau qhov tseem ceeb ntawm lwm cov khoom.
ADIsimPower tsim cov cuab yeej zam qhov teeb meem no los ntawm kev siv cov qauv linearization rau cov khoom muaj txiaj ntsig (xws li tus nqi lossis qhov loj me) txhawm rau ua kom zoo dua ua ntej xaiv cov khoom siv tiag tiag, thiab tom qab ntawd ua kom zoo dua cov zis tom qab xaiv cov khoom siv tiag tiag los ntawm cov ntaub ntawv ntawm ntau txhiab lub cuab yeej. Tab sis theem no ntawm complexity yog tsis tsim nyog thaum pib nrog ib tug tsim. Siv cov kev suav muab, siv SIMPLIS simulator-xws li ADIsimPE™ dawb-lossis siv qee lub sijhawm ntawm lub rooj zaum hauv chav kuaj, koj tuaj yeem tuaj txog ntawm qhov kev tsim txaus siab nrog kev siv zog tsawg.
