Daim ntawv thov thiab kev txhim kho ntawm Monolithic Switching Power Supply
Tam sim no, lub zog nruab nrab thiab me me hloov cov khoom siv hluav taws xob tau tsim nyob rau hauv kev coj ntawm kev sib koom ua ke monolithic. Nyob rau hauv daim ntawv no, cov yam ntxwv ntawm kev ua tau zoo thiab raug siv ntawm ntau yam monolithic hloov hluav taws xob khoom siv uas tau qhia nyob rau hauv xyoo tas los no tau piav qhia meej.
Lub monolithic switching power supply integrated circuit muaj qhov zoo ntawm kev sib koom ua ke, kev ua haujlwm siab, qhov yooj yim tshaj plaws peripheral circuit, qhov kev ua tau zoo tshaj plaws, thiab tuaj yeem tsim ib qho kev sib cais hloov hluav taws xob nrog kev ua haujlwm siab thiab tsis muaj lub zog zaus transformer. Tom qab nws tawm hauv nruab nrab thiab lig xyoo 1990, nws pom muaj zog heev. Tam sim no, nws tau dhau los ua qhov nyiam sib xyaw ua ke rau kev txhim kho cov khoom siv hluav taws xob nruab nrab thiab qis hluav taws xob hloov hluav taws xob, kev hloov pauv cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob hauv ntiaj teb. Lub zog hloov hluav taws xob tsim los ntawm nws yog sib npaug rau cov kab hluav taws xob tswj hluav taws xob ntawm tib lub zog hauv tus nqi, thiab cov khoom siv hluav taws xob tau zoo dua qub, thiab qhov ntim thiab qhov hnyav tau txo qis heev. Qhov no ua rau muaj kev pom zoo rau kev nce qib thiab nrov ntawm cov khoom siv hluav taws xob hloov tshiab.
Switching fais fab mov yog lub npe hu ua high-efficiency thiab lub zog txuag hluav taws xob, nws sawv cev rau txoj kev loj hlob ntawm kev tswj fais fab mov, thiab tam sim no tau dhau los ua cov khoom tseem ceeb ntawm kev tswj fais fab mov. Tshaj li 20 xyoo dhau los, kev sib koom ua ke ntawm cov khoom siv hluav taws xob hloov pauv tau tsim nyob rau hauv ob qho kev qhia hauv qab no.
Thawj qhov kev taw qhia yog kev sib koom ua ke ntawm kev tswj xyuas hluav taws xob, lub hauv paus tseem ceeb ntawm cov khoom siv hluav taws xob hloov pauv. Xyoo 1997, Pulse Width Modulation (PWM) controller integrated circuits tau xub tsim tawm txawv teb chaws. Motorola, SiliconGeneral, Unitrode, thiab lwm yam. successively launched ib tug xov tooj ntawm PWM chips. Cov khoom lag luam muaj xws li MC3520 thiab SG3524. , HWV 3842. Txij li thaum xyoo 1990s, high-speed PWM thiab PFM (mem tes zaus hloov kho) chips nrog kev hloov zaus ntawm 1MHz tau tsim tawm txawv teb chaws, xws li UC1825 thiab UC1864.
Qhov thib ob kev taw qhia yog qhov chaw nruab nrab, thiab lub zog qis hloov hluav taws xob tau paub txog kev sib koom ua ke monolithic. Qhov no tau muab faib ua ob theem: Thaum xyoo 1980s, Italian-Fabkis Semiconductor Co., Ltd. (SGS-Thomson) tau ua tus thawj coj hauv kev qhia L4960 series ntawm monolithic switching regulators. Lub tuam txhab tau qhia txog L4970A series hauv xyoo 1990s. Nws cov yam ntxwv yog tias lub mem tes dav modulator, lub zog tso zis theem, tiv thaiv Circuit Court, thiab lwm yam tau muab tso rau hauv ib nti. Thaum siv, nws yuav tsum tau nruab nrog lub hwj chim zaus transformer kom cais tawm ntawm daim phiaj fais fab. ), siab tam sim no (1.5A ~ 10A), kev ua haujlwm siab (tshaj 90 feem pua) hloov hluav taws xob. Tab sis qhov tseeb, nws tseem yog DC / DC lub zog hloov pauv.
Xyoo 1994, Lub Tuam Txhab Hluav Taws Xob ntawm Tebchaws Meskas thawj zaug ua tiav tau tsim peb lub davhlau ya nyob twg pulse dav kev hloov pauv monolithic hloov hluav taws xob hauv ntiaj teb, uas tau qhuas tias yog "sab saum toj hloov hluav taws xob". Thawj tiam ntawm cov khoom lag luam yog TOPSwitch series, thiab tiam thib ob yog TOPSwitch-II series uas tau tawm hauv xyoo 1997. Xyoo 1998, lub tuam txhab tau tsim lub TinySwitch series ntawm kev ua haujlwm siab, lub zog qis, tus nqi qis rau plaub lub davhlau ya nyob twg. single-chip switching fais fab khoom siv. Tom qab ntawd, Motorola tau tshaj tawm MC33370 series tsib-terminal single-chip switching power supply hauv 1999, tseem hu ua High Voltage Power Switching Regulator. Tam sim no, ib leeg-chip hloov fais fab mov tau tsim plaub series thiab ze li ntawm 70 hom khoom.
