Munzvimbo yemagetsi, maMOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) akabuda sezvinhu zvinowanika kwose kwose, ane mukurumbira nekushanda kwawo, kukurumidza kuchinja, uye kudzora. Nekudaro, maMOSFET ane hunhu hwekuzvarwa, iyo diode yemuviri, iyo inosuma zvese zvakanakira uye zvinogona kunetsa. Ichi chidzidzo chekutanga-chinoshamwaridzana chinotarisa munyika yeMOSFET miviri diode, ichiongorora zvakakosha, maitiro, uye inoshanda mashandisiro.
Kuvhura iyo MOSFET Muviri Diode
Iyo MOSFET body diode ndeye intrinsic parasitic diode inoumbwa neiyo MOSFET chimiro chemukati. Iripo pakati penzvimbo uye madhiraini emvura, uye kutungamira kwayo kunowanzopesana neyekunze ikozvino kuyerera kuburikidza neMOSFET.
Kunzwisisa Chiratidzo uye Hunhu
Chiratidzo cheMOSFET body diode yakafanana neyenguva dzose diode, ine museve unoratidza kwainoyerera ikozvino. Iyo diode yemuviri inoratidza akati wandei akakosha maitiro:
Pamberi Pazvino: Iyo diode yemuviri inogona kuitisa ikozvino munzira yekumberi, yakafanana neyakajairwa diode.
Reverse Voltage Kuparara: Iyo diode yemuviri ine reverse breakdown voltage, kupfuura iyo inoitisa zvakanyanya, inogona kukuvadza MOSFET.
Reverse Recovery Time: Kana iyo diode yemuviri ichichinja kubva kumberi kuenda kumashure conduction, zvinotora nguva yekudzoreredza kuti iwanezve kuvharira kwayo.
Zvishandiso zveMOSFET Body Diodes
Freewheeling Diode: Mune inductive maseketi, diode yemuviri inoshanda seyemahara wheeling diode, ichipa nzira yekuti inductor yazvino iora kana MOSFET yadzima.
Reverse Dziviriro Yazvino: Iyo diode yemuviri inodzivirira iyo MOSFET kubva mukukuvadzwa nekuda kwekudzokera kumashure uko kunogona kumuka mune mamwe matunhu masisitimu.
Voltage Clamping: Mune mamwe maapplication, diode yemuviri inogona kushandiswa kune voltage clamping, kudzikamisa voltage spikes uye kuchengetedza zvinonzwisa tsitsi.
Mienzaniso Inoshanda
DC Mota Kudzora: MuDC mota inodzora maseketi, diode yemuviri inodzivirira MOSFET kubva mukukuvadzwa kunokonzerwa nemota inductive back EMF (electromotive force) kana MOSFET yadzima.
Power Supply Circuits: Mumagetsi ekupa maseketi, diode yemuviri inogona kushanda seye freewheeling diode, kudzivirira kuvakwa kwemagetsi akawandisa kana MOSFET yadzima.
Snubber Circuits: Maseketi eSnubber, anowanzo shandisa diode yemuviri, anoshandiswa kubvisa simba uye kunyorovesa spikes yemagetsi panguva yeMOSFET switching, kuchengetedza MOSFET nekuvandudza kugadzikana kwedunhu.
Mhedziso
MOSFET muviri diode, kunyangwe kazhinji isingatariswe, inoita basa rakakosha mumaseketi akasiyana emagetsi. Kunzwisisa kwavo zvakakosha, maitiro, uye mashandisirwo kunopa simba mainjiniya uye matekinoroji kugadzira maseketi akasimba uye akavimbika. Nekunyatsotarisisa zvinorehwa nemadhiodhi emuviri uye nekushandisa nzira dzakakodzera dzemagadzirirwo edunhu, kugona kwakazara kweMOSFETs kunogona kushandiswa uku uchiona hupenyu hurefu uye kugadzikana kwemagetsi masisitimu.
Nguva yekutumira: Jun-11-2024