Metal-oxide-semiconductor field-effect transistors (MOSFETs) yakashandura indasitiri yezvemagetsi, ikava zvikamu zveubiquitous mumaseketi akawanda. Nepo basa ravo rekutanga riri rekudzora nekukudza masaini emagetsi, maMOSFET anewo chinhu chinowanzo furatirwa asi chakakosha: iyo yemukati muviri diode. Iyi blog positi inoongorora mukati mekuoma kweMOSFET muviri diode, kuongorora maitiro avo, kukosha mudhizaini yedunhu, uye zvingangoita mashandisiro.
Kuvhura iyo MOSFET Muviri Diode
Yakamisikidzwa mukati meMOSFET chimiro, iyo diode yemuviri inherent parasitic junction iyo inoumba pakati pekudonhedza uye kunobva nzvimbo. Iyi diode inoratidza unidirectional ikozvino kuyerera, ichibvumira ikozvino kuti ipfuure kubva mudhiraini kuenda kutsime asi kwete zvinopesana.
Kukosha kweMuviri Diode muCircuit Dhizaini
Iyo diode yemuviri inoita basa rakakosha mumashandisirwo akasiyana edunhu, kunyanya mumagetsi emagetsi:
Freewheeling Diode: Panguva yekudzima chikamu cheMOSFET, iyo diode yemuviri inoitisa inductive ikozvino kubva pamutoro, ichidzivirira voltage spikes uye kudzivirira MOSFET kubva mukukuvadzwa.
Reverse Dziviriro Yazvino: Mumaseketi uko kutenderera kwazvino kuyerera kuri kunetseka, diode yemuviri inoita sechivharo, ichidzivirira ikozvino kuyerera ichidzokera muMOSFET.
Snubber Diode: Iyo diode yemuviri inogona kushanda se snubber diode, kubvisa simba rakachengetwa muparasitic inductances uye kudzivirira voltage overshoots panguva yekuchinja zviitiko.
Kufunga nezveMOSFET Body Diodes
Nepo diode yemuviri ichipa mabhenefiti ekuzvarwa, zvakakosha kuti utarise zvimwe zvinhu mudhizaini yedunhu:
Reverse Voltage Kugona: Iyo diode yemuviri reverse voltage rating inofanirwa kuenderana kana kudarika redunhu repamusoro reverse voltage kudzivirira kuparara.
Forward Current Handling: Iyo body diode yekumberi ikozvino kugona kunofanirwa kukwana kubata peak ikozvino panguva yefreewheeling kana reverse conduction scenarios.
Kuchinja Kumhanya: Kumhanyisa diode yemuviri, kunyanya mu-high-frequency application, haifanire kuunza kunonoka kana kurasikirwa kwakakosha.
Zvishandiso zveMOSFET Body Diodes
Iyo diode yemuviri inowana maapplication mune akasiyana siyana maseketi:
DC-DC Shanduri: Mumabhaki anoshandura, diode yemuviri inoita seye freewheeling diode, ichidzivirira MOSFET kubva kune inductive voltage spikes.
Mota Dzinodzora Circuits: Iyo diode yemuviri inodzivirira kudzoreredza kuyerera kwazvino kana mota yakabhurwa kana kuunza kumashure EMF.
Zvigadzirwa zveMasimba: Mumagetsi emagetsi, diode yemuviri inodzivirira MOSFET panguva yekuchinja madiki uye inodzivirira kudzosera kumashure kubva pamutoro.
Mhedziso
Iyo MOSFET body diode, inowanzo furatirwa, inoita basa rakakosha mudhizaini yedunhu, kunyanya mumagetsi emagetsi. Kunzwisisa maitiro ayo, kukosha, uye miganhu kwakakosha pakugadzira matunhu akasimba, anoshanda, uye akavimbika. Sezvo tekinoroji yeMOSFET ichifambira mberi, kukosha kweiyo diode yemuviri inogona kuramba ichienderera, kuve nechokwadi chekuenderera kwayo kukosha munyika inogara ichishanduka yemagetsi.
Nguva yekutumira: Jun-07-2024