Sankhani olondola MOSFET kwa dalaivala dera ndi mbali yofunika kwambiri yaMOSFET kusankha sikuli bwino kudzakhudza mwachindunji mphamvu ya dera lonse ndi mtengo wa vuto, zotsatirazi timati ngodya wololera kusankha MOSFET.
1, N-channel ndi P-channel kusankha
(1), M'mabwalo wamba, MOSFET ikakhazikika ndipo katunduyo atalumikizidwa ndi thunthu lamagetsi, MOSFET imapanga chosinthira chamagetsi chochepa. Pakusintha kwamagetsi otsika, MOSFET ya N-channel iyenera kugwiritsidwa ntchito, chifukwa choganizira mphamvu yamagetsi yofunika kuzimitsa kapena kuyatsa chipangizocho.
(2), MOSFET ikalumikizidwa ndi basi ndipo katunduyo wakhazikika, chosinthira chamagetsi chachikulu chiyenera kugwiritsidwa ntchito. P-channelZithunzi za MOSFET Nthawi zambiri amagwiritsidwa ntchito mu topology iyi, komanso pakuganizira za ma voltage drive.
2, mukufuna kusankha choyeneraMOSFET, m'pofunika kudziwa mphamvu yamagetsi yomwe imayenera kuyendetsa mphamvu yamagetsi, komanso kupanga njira yosavuta yogwiritsira ntchito. Mphamvu yamagetsi ikakhala yayikulu, chipangizocho chimafuna mtengo wokwera. Kwa mapangidwe osunthika, ma voltages otsika amakhala ochulukirapo, pomwe pamapangidwe a mafakitale, ma voltages apamwamba amafunikira. Potengera zomwe zikuchitika, mphamvu yamagetsi yovotera iyenera kukhala yayikulu kuposa mphamvu ya thunthu kapena basi. Izi zidzapereka chitetezo chokwanira kuti MOSFET isalephere.
3, yotsatiridwa ndi mawonekedwe a dera, mlingo wamakono uyenera kukhala wochuluka kwambiri womwe katunduyo ungathe kupirira muzochitika zonse, zomwe zimachokera ku chitetezo cha zinthu zofunika kuziganizira.
4. Pomaliza, kusintha kwa MOSFET kumatsimikiziridwa. Pali magawo ambiri omwe amakhudza kusintha magwiridwe antchito, koma chofunikira kwambiri ndi chipata / kukhetsa, chipata / gwero ndi kukhetsa / gwero lamphamvu. Ma capacitances awa amapangitsa kuti pakhale kuwonongeka kwa makina chifukwa amayenera kulipiritsidwa panthawi iliyonse.
Nthawi yotumiza: May-20-2024
