Ob hom kev khiav hauj lwm ntawm monolithic hloov hluav taws xob khoom siv
Cov khoom siv hluav taws xob hloov pauv monolithic muaj ob hom kev ua haujlwm yooj yim: ib qho yog CUM (ContinuousMode), thiab lwm yam yog hom tsis tu ncua
(a) Nruam hom (b) Tsis siv neeg hom
Nyob rau hauv tas li ntawd mus hom, tus thawj hloov tam sim no pib los ntawm ib tug tej yam amplitude, ces nce mus rau lub ncov tus nqi, thiab ces sai sai rov qab mus rau xoom. Nws hloov pauv tam sim no waveform yog trapezoidal. Qhov no qhia tau hais tias nyob rau hauv tas mus li hom, lub tom ntej switching voj voog muaj ib tug thawj lub zog vim hais tias lub zog khaws cia nyob rau hauv lub high-frequency transformer tsis yog tag nrho tso tawm nyob rau hauv txhua lub voj voog hloov. Kev siv cov hom txuas ntxiv txo cov thawj ncov tam sim no Ip thiab RMS tam sim no IRMS, txo cov hwj chim ntawm cov nti. Txawm li cas los xij, hom kev txuas mus ntxiv yuav tsum muaj kev nce ntxiv hauv thawj inductance Lp, uas ua rau muaj kev nce hauv qhov loj ntawm lub siab zaus transformer. Nyob rau hauv cov ntsiab lus, lub nruam hom yog haum rau me zog TOPSwitches thiab loj loj HF transformers.
Qhov hloov tam sim no nyob rau hauv hom tsis tu ncua nce ntawm xoom mus rau lub ncov thiab tom qab ntawd poob mus rau xoom. Qhov no txhais tau hais tias lub zog khaws cia rau hauv high-frequency transformer yuav tsum tau tso tawm tag nrho thaum lub sij hawm hloov pauv, nrog rau daim duab peb sab hloov tam sim no waveform. Hom tsis txuas ntxiv muaj qhov tseem ceeb ntawm Ip thiab IRMS, tab sis yuav tsum muaj Lp tsawg dua. Yog li ntawd, nws yog qhov tsim nyog rau kev siv TOPSwitch nrog lub zog tso zis ntau dua nrog me me qhov siab zaus transformer.
Plaub hom kev tawm tswv yim circuits rau monolithic switching fais fab mov
(1) Cov lus qhia yooj yim Circuit Court;
(2) Txhim kho cov lus qhia yooj yim Circuit Court;
(3) Optocoupler tawm tswv yim Circuit Court nrog voltage regulator;
(4) Optocoupler tawm tswv yim Circuit Court nrog TL431.
