{"id":2432,"date":"2018-07-12T02:12:08","date_gmt":"2018-07-12T02:12:08","guid":{"rendered":"https:\/\/hocvienit.vn\/?p=2432"},"modified":"2024-07-03T17:02:58","modified_gmt":"2024-07-03T10:02:58","slug":"mosfet-cong-suat-v-mos-va-d-mos","status":"publish","type":"post","link":"https:\/\/hocvienit.vn\/?p=2432","title":{"rendered":"Mosfet c\u00f4ng su\u1ea5t v-mos v\u00e0 d-mos"},"content":{"rendered":"

C\u00e1c transistor tr\u01b0\u1eddng \u1ee9ng (JFET v\u00e0 MOSFET) m\u00e0 ta \u0111\u00e3 kh\u1ea3o s\u00e1t \u1edf tr\u00ean ch\u1ec9 th\u00edch h\u1ee3p cho c\u00e1c m\u1ea1ch c\u00f3 bi\u00ean \u0111\u1ed9 t\u00edn hi\u1ec7u nh\u1ecf nh\u01b0 ti\u1ec1n khu\u1ebfch \u0111\u1ea1i, tr\u1ed9n s\u00f3ng, khu\u1ebfch \u0111\u1ea1i cao t\u1ea7n, trung t\u1ea7n, dao \u0111\u1ed9ng\u2026 V\u1eady c\u00f2n Mosfet c\u00f4ng su\u1ea5t V-mos v\u00e0 D-mos th\u00ec sao?<\/span><\/p>\n

\"\"<\/span><\/p>\n

\"Mosfet
Mosfet c\u00f4ng su\u1ea5t V-mos v\u00e0 D-mos<\/figcaption><\/figure>\n

N\u0103m 1976, ng\u01b0\u1eddi ta ph\u00e1t minh ra lo\u1ea1i transistor tr\u01b0\u1eddng c\u00f3 c\u00f4ng su\u1ea5t v\u1eeba, \u0111\u1ebfn l\u1edbn v\u1edbi kh\u1ea3 n\u0103ng d\u00f2ng tho\u00e1t \u0111\u1ebfn v\u00e0i ch\u1ee5c ampere v\u00e0 c\u00f4ng su\u1ea5t c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn v\u00e0i ch\u1ee5c Watt.<\/span><\/p>\n

V-MOS:<\/span><\/p>\n

Th\u1eadt ra \u0111\u00e2y l\u00e0 m\u1ed9t lo\u1ea1i E-MOSFET c\u1ea3i ti\u1ebfn, c\u0169ng l\u00e0 kh\u00f4ng c\u00f3 s\u1eb5n th\u00f4ng l\u1ed9 v\u00e0 \u0111i\u1ec1u h\u00e0nh theo ki\u1ec3u t\u0103ng. s\u1ef1 kh\u00e1c nhau v\u1ec1 c\u1ea5u tr\u00fac E-MOSFET v\u00e0 V-MOS \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y b\u1eb1ng h\u00ecnh v\u1ebd sau:<\/span><\/p>\n

Khi VGS<\/span>\u00a0d\u01b0\u01a1ng v\u00e0 l\u1edbn h\u01a1n VGS(th)<\/span>, th\u00f4ng l\u1ed9 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh d\u1ecdc theo r\u00e3nh V v\u00e0 d\u00f2ng electron s\u1ebd ch\u1ea1y th\u1eb3ng t\u1eeb hai ngu\u1ed3n S \u0111\u1ebfn c\u1ef1c tho\u00e1t D. V\u00ec l\u00fd do n\u00e0y n\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 V-MOS (Vertical MOSFET).<\/span><\/p>\n

D-MOS:<\/span><\/p>\n

C\u0169ng l\u00e0 m\u1ed9t lo\u1ea1i E-MOSFET ho\u1ea1t \u0111\u1ed9ng theo ki\u1ec3u t\u0103ng, \u1ee9ng d\u1ee5ng hi\u1ec7n t\u01b0\u1ee3ng khu\u1ebfch t\u00e1n \u0111\u00f4i (double-diffused) n\u00ean \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 D-MOS. C\u00f3 c\u1ea5u tr\u00fac nh\u01b0 sau:<\/span><\/p>\n

\"\"<\/span><\/p>\n

C\u00e1c \u0111\u1eb7c t\u00ednh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a V-MOS v\u00e0 D-MOS c\u0169ng gi\u1ed1ng nh\u01b0 E-MOSFET. Ngo\u00e0i ra, c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang c\u1ee7a V-MOS v\u00e0 D-MOS l\u00e0:<\/span><\/p>\n

– \u0110i\u1ec7n tr\u1edf \u0111\u1ed9ng rds<\/span>\u00a0khi ho\u1ea1t \u0111\u1ed9ng r\u1ea5t nh\u1ecf (th\u01b0\u1eddng nh\u1ecf h\u01a1n 1)<\/span><\/p>\n

– C\u00f3 th\u1ec3 khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t \u1edf t\u1ea7n s\u1ed1 r\u1ea5t cao<\/span><\/p>\n

– D\u1ea3i th\u00f4ng c\u1ee7a m\u1ea1ch khu\u1ebfch \u0111\u1ea1i c\u00f4ng su\u1ea5t c\u00f3 th\u1ec3 l\u00ean \u0111\u1ebfn v\u00e0i ch\u1ee5c MHz<\/span><\/p>\n

– V-MOS v\u00e0 D-MOS c\u0169ng c\u00f3 k\u00eanh N v\u00e0 k\u00eanh P, nh\u01b0ng k\u00eanh N th\u00f4ng d\u1ee5ng h\u01a1n<\/span><\/p>\n

– V-MOS v\u00e0 D-MOS c\u0169ng c\u00f3 k\u00fd hi\u1ec7u nh\u01b0 E-MOSFET<\/span><\/p>\n

\"\"<\/span><\/p>\n

M\u1ecdi chi ti\u1ebft xin vui l\u00f2ng li\u00ean h\u1ec7:<\/i><\/p>\n

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 <\/p>\n

 <\/p>\n

\"\"<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c transistor tr\u01b0\u1eddng \u1ee9ng (JFET v\u00e0 MOSFET) m\u00e0 ta \u0111\u00e3 kh\u1ea3o s\u00e1t \u1edf tr\u00ean ch\u1ec9 th\u00edch h\u1ee3p cho c\u00e1c m\u1ea1ch c\u00f3 bi\u00ean \u0111\u1ed9 t\u00edn hi\u1ec7u nh\u1ecf nh\u01b0 ti\u1ec1n khu\u1ebfch \u0111\u1ea1i, tr\u1ed9n s\u00f3ng, khu\u1ebfch \u0111\u1ea1i cao t\u1ea7n, trung t\u1ea7n, dao \u0111\u1ed9ng\u2026 V\u1eady c\u00f2n Mosfet c\u00f4ng su\u1ea5t V-mos v\u00e0 D-mos th\u00ec sao?<\/p>\n","protected":false},"author":95,"featured_media":12381,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[96,94],"tags":[498],"_links":{"self":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2432"}],"collection":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/users\/95"}],"replies":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2432"}],"version-history":[{"count":0,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/posts\/2432\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=\/wp\/v2\/media\/12381"}],"wp:attachment":[{"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2432"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2432"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hocvienit.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2432"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}