Li-MOSFET li sebetsa joang?

1, MOSFETselelekela

Tlhaloso ea FieldEffect Transistor (FET)) sehlooho sa MOSFET. ka palo e nyane ea bajari ho kenya letsoho ho tsamaisa mocheso, o tsejoang hape e le transistor ea lipalo tse ngata. Ke ea mofuta oa voltage mastering semi-superconductor mochine. Ho na le ho hanyetsa ha tlhahiso ho phahame (10 ^ 8 ~ 10 ^ 9Ω), lerata le tlaase, tšebeliso e tlaase ea matla, sebaka se tsitsitseng, ho bonolo ho kopanya, ha ho na ketsahalo ea bobeli ea ho senyeha, mosebetsi oa inshorense oa leoatle ka bophara le melemo e meng, joale e fetohile. bipolar transistor le power junction transistor ea bathusi ba matla.

 

2, litšobotsi tsa MOSFET

1, MOSFET ke sesebelisoa sa taolo ea motlakase, se sebelisa VGS (gate source voltage) control ID (drain DC);

2, MOSFET'soutput DC pole e nyane, ka hona, khanyetso ea tlhahiso e kholo.

3, ke kopo ea palo e nyenyane ea bajari ho tsamaisa mocheso, kahoo o na le tekanyo e ntle ea botsitso;

4, e na le tsela ea ho fokotsa motlakase oa ho fokotsa motlakase o monyenyane ho feta triode e nang le tsela ea ho fokotsa coefficient ea ho fokotsa;

5, bokhoni ba ho thibela mahlaseli a MOSFET;

6, ka lebaka la ho ba sieo ha mosebetsi o fosahetseng oa ho hasana ha oligon o bakoang ke likaroloana tsa lerata tse hasaneng, kahoo lerata le tlaase.

 

3, molao-motheo oa mosebetsi oa MOSFET

MOSFET'smolao-motheo o sebetsang ka polelo e le 'ngoe, ke "drain - mohloli pakeng tsa ID e phallang ka mocha bakeng sa heke le mocha pakeng tsa pn junction e entsoeng ke leeme le ka morao la heke voltage master ID", ho nepahala, ID e phalla ka bophara. ea tsela, ke hore, channel cross-sectional area, ke phetoho ea leeme e ka morao ea pn junction, e hlahisang lera la ho fokotseha Lebaka la taolo e atolositsoeng ea phapang. Leoatleng le se nang metsi a VGS = 0, kaha katoloso ea lera la phetoho ha e kholo haholo, ho ea ka ho eketsoa ha matla a khoheli a VDS pakeng tsa mohloli oa metsi, li-elektronike tse ling tse leoatleng la mohloli li huloa ke drain, ke hore, ho na le ts'ebetso ea DC ID ho tloha ho drain ho ea mohloling. Lera le leka-lekaneng le atolositsoeng ho tloha hekeng ho ea ho drain e etsa hore 'mele oohle oa mocha o thehe mofuta o thibelang, ID e tletse. Fokotsa mokhoa ona. Ho tšoantšetsa lera la phetoho ho mocha oa tšitiso e feletseng, ho e-na le matla a DC a khaotsoe.

 

Hobane ha ho na motsamao oa mahala oa li-elektronike le masoba karolong ea phetoho, e na le thepa e batlang e sireletsa ka mokhoa o loketseng, 'me ho thata hore motlakase o akaretsang o phalle. Empa joale tšimo ea motlakase pakeng tsa drain - mohloli, ha e le hantle, tse peli tsa phetoho lera ikopanye le drain le heke palo haufi le karolo e ka tlaase, hobane tšimo ea motlakase ea hoholeha e hula lielektrone tse phahameng ka lebelo la phetoho. Botebo ba lebala la ho hoholeha bo batla bo lula bo hlahisa botlalo ba sebaka sa ID.

 

Potoloho e sebelisa motsoako oa MOSFET e ntlafalitsoeng ea P-channel le MOSFET e ntlafalitsoeng ea N-channel. Ha tlhahiso e le tlase, P-channel MOSFET e tsamaisa 'me tlhahiso e hokahane le terminal e ntle ea phepelo ea motlakase. Ha tlhahiso e phahame, N-channel MOSFET e tsamaisa 'me tlhahiso e hokahane le sebaka sa phepelo ea motlakase. Potolohong ena, MOSFET ea P-channel le MOSFET ea N-channel li lula li sebetsa libakeng tse fapaneng, 'me likarolo tsa tsona le liphetho li khutlisetsoa morao.