Kumenya MOSFET nka Hindura: Igitabo Cyuzuye cyo Gushyira mu bikorwa Amashanyarazi

Incamake yihuse:Aka gatabo karambuye kerekana uburyo wakoresha neza MOSFETs nka switch muri porogaramu za elegitoronike, hibandwa kubikorwa bifatika hamwe nibisubizo nyabyo.

Gusobanukirwa MOSFET Hindura Shingiro

Ibyuma-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) byahinduye ibikoresho bya elegitoroniki bigezweho bitanga igisubizo cyiza kandi cyizewe cyo guhinduranya. Nkumuntu utanga isoko ryiza rya MOSFETs yo mu rwego rwo hejuru, tuzakuyobora mubintu byose ukeneye kumenya bijyanye no gukoresha ibi bice bitandukanye nka switch.

Amahame remezo yo gukora

MOSFETs ikora nka voltage igenzurwa na voltage, itanga inyungu nyinshi kurenza imashini gakondo hamwe nibindi bikoresho bya semiconductor:

Umuvuduko wihuse (urwego rwa nanosekond)
Kurwanya leta nkeya (RDS (kuri))
Gukoresha ingufu nkeya muri leta zihamye
Nta kwambara imashini

Twandikire kubisubizo byinshi

MOSFET Hindura imikorere ikora nibiranga

Uturere twingenzi dukora

Akarere gakorera	Imiterere ya VGS	Guhindura Leta	Gusaba
Agace gaciwe	VGS <VTH	OFF	Fungura ibikorwa byumuzunguruko
Umurongo / Triode Akarere	VGS> VTH	KURI Leta	Guhindura porogaramu
Intara	VGS >> VTH	Byuzuye Byuzuye	Uburyo bwiza bwo guhinduranya

Ibipimo Byingenzi Kuri Guhindura Porogaramu

RDS (kuri):Kurwanya leta-imiyoboro y-isoko
VGS (th):Irembo ryinjira mumashanyarazi
Indangamuntu (max):Umuyoboro ntarengwa
VDS (max):Umuvuduko ntarengwa w-isoko ya voltage

Amabwiriza yo Gushyira mu bikorwa

Ibisabwa byo gutwara Irembo

Gutwara amarembo neza ningirakamaro muburyo bwiza bwo guhindura MOSFET. Suzuma ibi bintu by'ingenzi:

Irembo rya voltage ibisabwa (mubisanzwe 10-12V kugirango uzamure byuzuye)
Ibiranga amarembo
Guhindura ibisabwa
Guhitamo inzugi

Inzira zo Kurinda

Shyira mu bikorwa ingamba zo gukingira kugirango ukore ibikorwa byizewe:

Kurinda amarembo
- Zener diode yo kurinda birenze urugero
- Irembo rirwanya inzitizi
Kurinda inkomoko
- Inzira ya Snubber kumashanyarazi
- Diode yubusa kuburemere bwimitwaro

Reba Ihitamo ryacu ryinshi

Gusaba-Ibitekerezo byihariye

Amashanyarazi

Muburyo bwo guhindura amashanyarazi (SMPS), MOSFETs nkibintu byambere byo guhinduranya. Ibyingenzi byingenzi birimo:

Ubushobozi bwo gukora cyane
RDS yo hasi (kuri) kugirango imikorere irusheho kugenda neza
Ibiranga guhinduranya byihuse
Ibisabwa byo gucunga ubushyuhe

Porogaramu Igenzura

Kubisabwa gutwara ibinyabiziga, tekereza kuri ibi bintu:

Ubushobozi bwo gukora ubu
Kurinda voltage kurinda
Guhindura inshuro zisabwa
Gushyushya ibitekerezo

Gukemura ibibazo no gukora neza

Ibibazo rusange hamwe nibisubizo

Ikibazo	Impamvu zishoboka	Ibisubizo
Igihombo kinini	Gutwara amarembo adahagije, imiterere mibi	Hindura neza amarembo yimodoka, utezimbere imiterere ya PCB
Oscillations	Induction ya parasitike, gusiba bidahagije	Ongeraho kurwanya irembo, koresha imiyoboro ya snubber
Guhunga ubushyuhe	Gukonjesha bidahagije, inshuro nyinshi zo guhinduranya	Kunoza imicungire yumuriro, gabanya inshuro zo guhinduranya

Inama zo Kunoza imikorere

Hindura imiterere ya PCB kubintu bito bya parasitike
Hitamo amarembo akwiye
Shyira mubikorwa gucunga neza ubushyuhe
Koresha imiyoboro ikingira

Kuki Hitamo MOSFETE zacu?

Inganda ziyobora RDS (kuri) ibisobanuro
Inkunga ya tekiniki yuzuye
Urunigi rwizewe
Ibiciro birushanwe

Saba Amagambo Ubu

Ibizaza hamwe niterambere

Komeza imbere yumurongo hamwe nubuhanga bugezweho bwa MOSFET:

Umuyoboro mugari (SiC, GaN)
Ikoranabuhanga rigezweho
Kunoza ibisubizo byo gucunga ubushyuhe
Kwishyira hamwe hamwe na sisitemu yo gutwara ibinyabiziga

Ukeneye ubuyobozi bw'umwuga?

Itsinda ryinzobere ryiteguye kugufasha guhitamo igisubizo cyiza cya MOSFET kubyo usaba. Twandikire kugirango ubone ubufasha bwihariye nubufasha bwa tekiniki.

Menyesha Ikipe yacu ya Tekinike