I-Metal-oxide-semiconductor field-effect transistors (MOSFETs) ziye zaba zizinto eziyimfuneko kwi-electronics yale mihla, ngenxa yobuchule bazo bokutshintsha kunye nokusebenza kakuhle. Uzinziswe ngaphakathi kolwakhiwo lwe-MOSFET kukho into ehlala ingahoywa kodwa ibalulekile: i-diode yomzimba. Eli candelo elibalulekileyo lidlala indima ebalulekileyo ekukhuselweni kwesekethe kunye nokusebenza. Nangona kunjalo, ii-diode zomzimba ze-MOSFET zinokunikezela ekusileleni, okukhokelela kukungasebenzi kakuhle kwesekethe kunye neengozi ezinokubakho zokhuseleko. Ukuqonda oonobangela abaqhelekileyo bamandla okusilela kwe-MOSFET diode kubaluleke kakhulu ekuyileni iinkqubo zombane ezithembekileyo nezomeleleyo.
Ukutyhila oonobangela boKuFail kweDiode yeMOSFET yaMandla
Uxinzelelo lwe-Overvoltage: Ukodlula umlinganiso wombane we-diode obuyela umva wombane kunokukhokelela ekophukelweni ngequbuliso, kubangele umonakalo ongalungisekiyo kwisiphambuka se-diode. Oku kunokwenzeka ngenxa ye-spikes yamandla exeshana, ukubetha kombane, okanye uyilo olungafanelekanga lwesekethe.
Uxinzelelo olugqithisileyo: Ukugqithisa amandla okuphatha i-diode yangoku ngaphambili kunokubangela ukuveliswa kobushushu obugqithisileyo, okubangela ukuba i-diode junction inyibilike okanye ithobe. Oku kunokwenzeka ngexesha leziganeko eziphezulu zangoku okanye iimeko ezimfutshane.
Ukutshintsha Uxinzelelo oluPhindayo: Ukutshintsha okuphindaphindiweyo kwe-MOSFET kwi-frequencies ephezulu kunokubangela ukudinwa kwi-diode junction yomzimba, okukhokelela kwii-micro-cracks kunye nokusilela ekugqibeleni. Oku kuxhaphake ngokukodwa kwizicelo ezibandakanya ukutshintsha kwe-frequency ephezulu kunye nemithwalo ye-inductive.
Imiba yokusiNgqongileyo: Ukuchanabeka kwiimeko ezirhabaxa zokusingqongileyo, ezinje ngamaqondo obushushu agqithisileyo, ukufuma, okanye izinto ezitshabalalisayo, zinokukhawulezisa ukuwohloka kwesiphambuka se-diode yomzimba, nto leyo ekhokelela kukusilela kwangaphambi kwexesha.
Iziphene zokuSebenza: Kwiimeko ezinqabileyo, iziphene zokuvelisa, ezifana nokungcola okanye iziphene zesakhiwo kwi-diode junction, zinokubangela ukuba i-diode yomzimba ingaphumeleli.
Amaqhinga okuThintela ukuFaila kweDiode yeMOSFET
Ukukhuselwa kwamandla ombane: Sebenzisa izixhobo zokuqinisa amandla ombane, njengeZener diode okanye i-varistors, ukunciphisa i-voltage spikes yexeshana kunye nokukhusela i-diode yomzimba kuxinzelelo olugqithisileyo.
Unyino lwangoku: Sebenzisa imilinganiselo yokunciphisa yangoku, efana ne-fuses okanye i-current current limit circuits, ukuthintela ukuhamba ngokugqithisileyo ngoku kwi-diode yomzimba kwaye uyikhusele kumonakalo ogqithisayo.
Iisekethe ze-Snubber: Sebenzisa iisekethe ze-snubber, ezibandakanya i-resistors kunye ne-capacitors, ukutshabalalisa amandla agcinwe kwi-inductances ye-parasitic kunye nokunciphisa uxinzelelo lokutshintsha kwi-diode yomzimba.
Ukhuseleko lokusiNgqongileyo: Vala izixhobo ze-elektroniki kwiindawo ezivaliweyo kwaye usebenzise iingubo ezifanelekileyo ezifanelekileyo ukukhusela i-diode yomzimba kwizinto ezinobungozi zokusingqongileyo.
Izahlulo zoMgangatho: Umthombo we-MOSFETs ezikumgangatho ophezulu kubavelisi abathembekileyo ukunciphisa umngcipheko wokwenza iziphene kwi-diode yomzimba.
Ukuqukumbela
Iidiode zomzimba ze-MOSFET zamandla, ngelixa zihlala zinganakwa, zidlala indima ebalulekileyo ekukhuselweni kwesekethe kunye nokusebenza. Ukuqonda izizathu eziqhelekileyo zokungaphumeleli kwabo kunye nokuphumeza amanyathelo okukhusela kubalulekile ekuqinisekiseni ukuthembeka kunye nokuphila ixesha elide kweenkqubo zombane. Ngokwamkela ezi zicwangciso, iinjineli zinokuyila iisekethe ezomeleleyo ezimelana neemeko zokusebenza ezinzima kwaye zinciphise umngcipheko wokungaphumeleli kwe-MOSFET diode, ukukhusela imfezeko yezixhobo zombane kunye nokuphucula ukhuseleko lwenkqubo iyonke.
Ixesha lokuposa: Jun-07-2024