Kusiyana pakati pa N-channel MOSFET ndi P-channel MOSFET! Kukuthandizani kusankha bwino opanga MOSFET!

Okonza madera ayenera kuti adaganizirapo funso posankha ma MOSFET: Kodi asankhe P-channel MOSFET kapena N-channel MOSFET? Monga wopanga, muyenera kufuna kuti malonda anu apikisane ndi amalonda ena pamitengo yotsika, komanso muyenera kufananitsa mobwerezabwereza. Ndiye kusankha bwanji? OLUKEY, wopanga MOSFET wazaka 20, akufuna kugawana nanu.

Kusiyana 1: mawonekedwe a conduction

Makhalidwe a N-channel MOS ndikuti imayatsidwa Vgs ikaposa mtengo wina. Ndioyenera kugwiritsidwa ntchito pamene gwero lakhazikitsidwa (otsika-mapeto pagalimoto), bola ngati chipata voteji kufika 4V kapena 10V. Ponena za mawonekedwe a P-channel MOS, imayatsidwa pamene Vgs ili yochepa kuposa mtengo wina, womwe uli woyenera pazochitika pamene gwero likugwirizanitsidwa ndi VCC (high-end drive).

Kusiyana 2:MOSFETkusintha kusintha

Kaya ndi N-channel MOS kapena P-channel MOS, pali chotsutsa pambuyo poyatsidwa, kotero kuti zamakono zidzadya mphamvu pa kukana uku. Gawo ili la mphamvu zomwe zimagwiritsidwa ntchito limatchedwa conduction loss. Kusankha MOSFET yokhala ndi kukana pang'ono kumachepetsa kutayika kwa ma conduction, ndipo kukana kwa ma MOSFET omwe ali ndi mphamvu zochepa nthawi zambiri kumakhala pafupifupi ma milliohms, ndipo palinso mamiliyoni angapo. Kuphatikiza apo, MOS ikayatsidwa ndikuzimitsa, siyenera kumaliza nthawi yomweyo. Pali njira yomwe ikucheperachepera, ndipo madzi oyenda amakhalanso ndi njira yowonjezereka.

Panthawi imeneyi, kutayika kwa MOSFET kumakhala chifukwa cha magetsi ndi magetsi, otchedwa switching loss. Nthawi zambiri zotayika zosinthira zimakhala zazikulu kwambiri kuposa kutayika kwa conduction, ndipo kukweza kwanthawi yayitali, kumapangitsanso kutaya kwakukulu. Chopangidwa ndi voteji ndi chapano pa nthawi ya conduction ndi yayikulu kwambiri, ndipo kutayika komwe kumayambitsa kumakhalanso kwakukulu, kotero kufupikitsa nthawi yosinthira kumachepetsa kutayika panthawi iliyonse ya conduction; kuchepetsa kusintha kwafupipafupi kungachepetse chiwerengero cha masinthidwe pa nthawi ya unit.

Kusiyana kwachitatu: MOSFET ntchito

Kuyenda kwa dzenje la P-channel MOSFET kumakhala kochepa, kotero pamene kukula kwa geometric kwa MOSFET ndi mtengo wokwanira wamagetsi ogwiritsira ntchito ndi ofanana, transconductance ya P-channel MOSFET ndi yaying'ono kuposa ya N-channel MOSFET. Kuphatikiza apo, mtengo wamtheradi wamagetsi amtundu wa P-channel MOSFET ndiwokwera kwambiri, womwe umafunikira magetsi okwera kwambiri. P-channel MOS ili ndi kusinthasintha kwakukulu kwamalingaliro, njira yayitali yolipiritsa ndi kutulutsa, komanso kachipangizo kakang'ono ka transconductance, kotero liwiro lake logwira ntchito ndilotsika. Pambuyo pa kutuluka kwa N-channel MOSFET, ambiri a iwo adasinthidwa ndi N-channel MOSFET. Komabe, chifukwa P-channel MOSFET ili ndi njira yosavuta komanso yotsika mtengo, mabwalo ena apakati ndi ang'onoang'ono owongolera digito amagwiritsabe ntchito ukadaulo wa PMOS.

Chabwino, ndizo zonse zogawana lero kuchokera kwa OLUKEY, wopanga ma MOSFET. Kuti mudziwe zambiri, mutha kutipeza paOLUKAYtsamba lovomerezeka. OLUKEY wakhala akuganizira kwambiri za MOSFET kwa zaka 20 ndipo likulu lake lili ku Shenzhen, Province la Guangdong, China. Zomwe zimakhudzidwa kwambiri ndi ma transistors apamwamba kwambiri, ma MOSFET amphamvu kwambiri, ma MOSFET phukusi lalikulu, ma MOSFET ang'onoang'ono, ma MOSFET ang'onoang'ono, ma MOSFET ang'onoang'ono, machubu amtundu wa MOS, ma MOSFET ophatikizidwa, ma MOSFET phukusi, ma MOSFET oyambira, ma MOSFET ophatikizidwa, ndi zina zambiri. Chinthu chachikulu chothandizira ndi WINSOK.