Yam dab tsi txwv covfais fab movminiaturization?
Nrog rau txoj kev loj hlob ntawm lub zog modules, engineers tau tsom mus rau yuav ua li cas ua modules me thiab sib dua. Qhov tseeb, peb txhua tus nkag siab tias peb tuaj yeem ua kom lub zog ntom ntom ntawm cov khoom los ntawm kev ua kom muaj qhov hloov pauv ntau zaus. Tab sis vim li cas lub module lub ntim kom deb li deb tsis hloov ntau npaum li cas? Dab tsi txwv qhov nce ntawm kev hloov zaus?
Nrog kev siv ntawmhloov cov khoom siv hluav taws xobnyob rau hauv kev ua lag luam, nce me me, sib dua, ua haujlwm siab, hluav taws xob tsawg, tus nqi qis thiab lwm yam yuav tsum tau ua kom txaus siab rau ntau yam khoom siv hluav taws xob hauv lub davhlau ya nyob twg. Txhawm rau kom ua tau raws li cov khoom siv hluav taws xob tam sim no portable, lub zog hloov hluav taws xob yuav tsum ua kom me me. Vim nws lub teeb yuag, nws tau dhau los ua ib qho teeb meem ntawm kev txhawj xeeb ntxiv rau cov neeg tsim qauv kom nce kev khiav hauj lwm zaus ntawm kev hloov cov khoom siv hluav taws xob. Txawm li cas los xij, dab tsi yog qhov txwv qhov zaus ntawm kev hloov cov khoom siv hluav taws xob? Qhov tseeb, nws feem ntau suav nrog peb yam: hloov cov raj, transformers, thiab EMI thiab PCB tsim.
1, hloov thiab hloov zaus
Hloov lub raj raws li cov cuab yeej tseem ceeb ntawm cov khoom siv hluav taws xob hloov hluav taws xob, nws qhov kev hloov pauv ceev thiab kev hloov pauv ncaj qha cuam tshuam rau qhov txwv ntawm qhov hloov zaus, cov kev tshuaj xyuas hauv qab no rau txhua tus neeg txog.
a, hloov ceev
Kev poob ntawm MOS transistor muaj kev hloov pauv thiab tsav poob. Lub sij hawm tig-rau ncua sij hawm td(on), lub sij hawm sawv tr, tig-tawm ncua sij hawm td(tawm), thiab lub caij nplooj zeeg tf.
Rau qhov MOSFET no, nws txwv hloov zaus yog: fs=1/(td(on) plus tr plus td(off) plus tf) Hz=1/(8ns plus 91ns plus 38ns plus 32ns){{ 6}}.9MHz, nyob rau hauv kev xyaum Nyob rau hauv lub tsim, txij li thaum lub luag hauj lwm lub voj voog ntawm kev tswj kev hloov ua tiav cov kev cai voltage, lub rau thiab tawm ntawm lub hloov raj tsis tau instantaneously tiav. Ntawd yog, qhov tseeb txwv hloov zaus ntawm qhov hloov pauv yog tsawg dua 5.9 MHz, yog li qhov hloov pauv ceev ntawm lub raj hloov nws tus kheej txwv qhov nce ntawm qhov hloov zaus. .
