Za dalaivala wa MOSFET

Za driver wa MOSFET

Nthawi Yotumiza: Jul-06-2024

Mosiyana ndi wapawiri kupota crystal triode, nthawi zambiri amamveka kuti kupangaMOSFETmayendedwe sagwiritsa ntchito magetsi, koma amangofuna kuti voliyumu ya GS ikhale yokwera kuposa mtengo wake. Ndikosavuta kuchita izi, timafunikira kwambiri mlingo.

Pakuti dongosolo la MOSFET, tingapeze mu GS, GD, padzakhala ena parasitic capacitance, ndi galimoto MOSFET, kwenikweni, ndi kulipiritsa ndi kutulutsa capacitance. Pakuti kulipiritsa capacitors timangofunika panopa ndi wokwanira, chifukwa capacitor mu mphindi kulipiritsa ndi ofanana ndi capacitor ngati yochepa-circuit, nthawi yomweyo panopa adzakhala apamwamba kuposa wamba mtengo. Choncho, ife ndiye kusankha kapena kupanga MOSFET galimoto dera pulogalamu, chinthu choyamba kulabadira kukula kwa nthawi yomweyo yochepa dera panopa angaperekedwe.

Kachiwiri, NMOS, yomwe imagwiritsidwa ntchito kwambiri pamagalimoto apamwamba, iyenera kulola kuti magetsi a pachipata apitirire mphamvu yamagetsi akamayendetsa. High-mapeto pagalimoto MOSFET pa nthawi, gwero voteji ndi kuda voteji kukula ndi chimodzimodzi, kotero nthawi ino voteji pachipata ayenera kukhala 4V kapena 10V wamkulu kuposa Vcc. Ngati mu dongosolo lomwelo, mukufuna kukhala wamkulu kuposa Vcc gate voteji, muyenera mwapadera kulamulira voteji dera. Madalaivala ambiri amapangidwa ndi mapampu opangira ma charger, ziyenera kuzindikirika kuti tiyenera kusankha capacitor yoyenera yakunja, kuti tipeze nthawi yayitali yokwanira yoyendetsa MOSFET.

Olueky pachimake gulu imakhazikika mu zigawo, likulu lake ku Shenzhen. Chachikulu:MOSFET, MCU, IGBT ndi zipangizo zina. The waukulu wothandizira mankhwalaWINSOK, Cmsemicon. Zogulitsa zimagwiritsidwa ntchito kwambiri pazankhondo, kuwongolera mafakitale, mphamvu zatsopano, mankhwala azachipatala, 5G, intaneti ya Zinthu, nyumba yanzeru, ndi zida zamagetsi zosiyanasiyana zogula. Kutengera zabwino za wothandizila wamkulu wapadziko lonse lapansi, kutengera msika waku China. Kugwiritsa ntchito ubwino wa utumiki wangwiro kwa makasitomala kuti adziwe mitundu yonse ya zipangizo zamakono zamakono zamakono, kuthandiza opanga kupanga zinthu zamtengo wapatali komanso kupereka ntchito yabwino.