MOSFETs muMagetsi Vehicle Controllers

1, basa reMOSFET mune yemagetsi mota controller

Mumashoko akareruka, mota inofambiswa neinobuda ikozvino yeMOSFET, iyo yakakwirira yekubuda ikozvino (kuitira kudzivirira MOSFET kubva pakupisa, mutongi ane ikozvino muganhu wekudzivirira), iyo yakasimba iyo mota torque, iyo inowedzera simba kukurumidza.

 

2, dunhu rekutonga reMOSFET's inoshanda mamiriro

Open process, on state, off process, cut-off state, breakdown state.

Kurasikirwa kukuru kweMOSFET kunosanganisira kurasikirwa kwekuchinja (pa uye kudzima maitiro), kurasikirwa kwemaitiro, kurasikirwa kwekucheka (kunokonzerwa nekudonha kwazvino, izvo zvisina basa), kurasikirwa kwesimba reavalanche. Kana kurasikirwa uku kuchidzorwa mukati mechikamu chinoshivirira cheMOSFET, iyo MOSFET ichashanda nemazvo, kana ikapfuura iyo inoshiviririka kukuvara kunoitika.

Iko kurasikirwa kwekuchinja kunowanzo kuve kwakakura kupfuura iyo conduction state kurasikirwa, kunyanya iyo PWM haina kuvhurika zvizere, mu pulse wide modulation state (inoenderana nekutanga kukwidziridza mamiriro emotokari yemagetsi), uye iyo yakanyanya kukurumidza mamiriro kazhinji ndiyo yekurasikirwa kwekuita. inotongwa.

3, zvikonzero zvikuru zveMOSkukuvara

Overcurrent, yakakwira ikozvino inokonzerwa nekukuvara kwekushisa kwepamusoro (yakasimudzwa yakakwira ikozvino uye pakarepo yakakwira ikozvino pulses inokonzerwa nejunction tembiricha inodarika kukosha kwekushivirira); overvoltage, source-drainage level yakakura kudarika voltage yekuputsika uye kuparara; Kuparara kwegedhi, kazhinji nekuti gedhi voltage inokuvadzwa neyekunze kana dhiraivha yedunhu kupfuura iyo yakanyanya kubvumidzwa voltage (kazhinji inoda kuti gedhi voltage inoda kuve isingasviki 20v), pamwe nekukuvara kwemagetsi.

 

4, MOSFET switching musimboti

MOSFET mudziyo unofambiswa nevoltage, sekureba gedhi G uye sosi nhanho S kuti ipe voltage yakakodzera pakati peiyo sosi nhanho S uye D ichagadzira dhizaini yekufambisa pakati penzvimbo yekutangira. Kupokana kweiyi nzira yazvino inova iyo MOSFET yemukati kuramba, kureva, iyo pa-resistance. Saizi yeiyi yemukati yekupikisa inotarisisa iyo yakanyanya pa-nyika ikozvino iyo iyoMOSFETchip inogona kumira (zvechokwadi, zvakare ine hukama nezvimwe zvinhu, iyo inonyanya kukosha ndeyekupikisa kwemafuta). Iyo idiki yekupikisa kwemukati, iyo yakakura ikozvino.