Metal-oxide-semiconductor field-effect transistors (MOSFETs) zvave zvinhu zvakakosha mumagetsi emazuva ano, nekuda kwehukuru hwavo hwekuchinja uye kugona. Yakamisikidzwa mukati meMOSFET chimiro pane kazhinji-inofuratirwa asi yakakosha chinhu: iyo diode yemuviri. Ichi chikamu chakakosha chinoita basa rakakosha mukuchengetedzwa kwedunhu uye kuita. Nekudaro, maMOSFET emuviri diode anogona kukundwa nekutadza, zvichikonzera kusashanda kwedunhu uye njodzi dzinogona kuitika. Kunzwisisa zvinowanzoitika zvesimba MOSFET diode kutadza kwakakosha pakugadzira akavimbika uye akasimba emagetsi masisitimu.
Kufumura Zvikonzero Zvinokonzera Simba MOSFET Diode Kukundikana
Overvoltage Stress: Kupfuura muviri diode reverse voltage rating kunogona kutungamira mukupunzika nekukasira, zvichikonzera kukuvara kusinga gadziriswe kune diode junction. Izvi zvinogona kuitika nekuda kwekupfupika kwemagetsi spikes, kurova kwemheni, kana dhizaini isina kunaka yedunhu.
Overcurrent Stress: Kupfuudza simba rekubata kwedhiodhi kumberi kunogona kukonzera kupisa kwakanyanya, zvichiita kuti diode jekiseni rinyunguduke kana kuderera. Izvi zvinogona kuitika panguva dzepamusoro-ikozvino shanduko yezviitiko kana mapfupi-edunhu mamiriro.
Kudzokorora Kuchinja Kushushikana: Kudzokororwa kuchinjika kweMOSFET pamafafitera akakwira kunogona kukonzera kuneta mumuviri diode junction, zvichitungamira kuma-micro-cracks uye kutadza pakupedzisira. Izvi zvinonyanya kuwanda mumashandisirwo anosanganisira yakakwirira-frequency switching uye inductive mitoro.
Zvemamiriro ekunze: Kuratidzwa kune yakaoma mamiriro ezvakatipoteredza, senge tembiricha yakanyanyisa, hunyoro, kana zvinhu zvinoparadza, zvinogona kukurumidzira kushatisa kweiyo body diode junction, zvichizotungamira mukutadza nguva isati yakwana.
Kugadzira Kukanganisa: Muzviitiko zvisingawanzo, zvikanganiso zvekugadzira, senge tsvina kana zvikanganiso zvechimiro mudhiodhi junction, zvinogona kuita kuti diode yemuviri ikunde.
Matanho Ekudzivirira Simba MOSFET Diode Kukundikana
Voltage Dziviriro: Shandisa voltage-clamping zvishandiso, seZener diodes kana varistors, kudzikamisa mapikisi emagetsi enguva pfupi uye kudzivirira diode yemuviri kubva mukushushikana kwemhepo.
Current Limiting: Shandisa ikozvino-kumisikidza matanho, akadai semafuse kana anoshanda azvino anomisa maseketi, kudzivirira yakawandisa ikozvino kuyerera kuburikidza nemuviri diode uye kuichengetedza kubva mukukuvadzwa kwakanyanya.
Snubber Circuits: Shandisa snubber circuits, inosanganisira resistors uye capacitors, kubvisa simba rakachengetwa muparasitic inductances uye kuderedza kushandura kushungurudza pane diode yemuviri.
Kudzivirirwa Kwemamiriro ekunze: Vhara zvinhu zvemagetsi mumivharo yekudzivirira uye shandisa machira akakodzera anoenderana kudzivirira iyo diode yemuviri kubva kune yakaoma nharaunda zvinhu.
Hunhu Zvidimbu: Kunobva emhando yepamusoro MOSFETs kubva kune vane mukurumbira vagadziri kuti vaderedze njodzi yekugadzira kukanganisa mumutumbi diode.
Mhedziso
Simba MOSFET muviri diodes, nepo kazhinji isingatariswe, inoita basa rakakosha mukudzivirira dunhu uye kuita. Kunzwisisa zvikonzero zvinowanzoitika zvekukundikana kwavo uye kushandisa matanho ekudzivirira zvakakosha pakuona kuvimbika uye hupenyu hurefu hwemagetsi emagetsi. Nekutora matanho aya, mainjiniya anogona kugadzira maseketi akasimba anomira nemamiriro ekushanda anodiwa uye kuderedza njodzi yekutadza kweMOSFET diode, kuchengetedza kutendeseka kwemidziyo yemagetsi uye kuwedzera kuchengetedzeka kwehurongwa hwese.
Nguva yekutumira: Jun-07-2024