Kugaragaza Isubiranamo Ryiza muri MOSFET ya Diode yumubiri

Mu rwego rwa elegitoroniki, MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors) yagaragaye nkibigize ahantu hose, izwiho gukora neza, guhinduranya umuvuduko, no kugenzura. Nyamara, ikintu cyihariye kiranga MOSFETs, diode yumubiri, itangiza ikintu kizwi nko gusubira inyuma, gishobora kugira ingaruka kumikorere yibikoresho no mubishushanyo mbonera. Iyi blog yanditse yinjira mwisi yo gukira kwinyuma muri diode yumubiri wa MOSFET, ikora uburyo bwayo, akamaro, ningaruka kubikorwa bya MOSFET.

Kumenyekanisha uburyo bwo kugarura ibintu

Iyo MOSFET yazimye, ikigezweho kinyura mumurongo wacyo kirahagarara gitunguranye. Nyamara, umubiri wa parasitike ya diode, wakozwe nuburyo bwihariye bwa MOSFET, ikora umuyoboro uhinduka nkuko amafaranga yabitswe mumuyoboro yongeye kwiyunga. Ihinduka ryinyuma, rizwi nka reaction yo kugarura ibintu (Irrm), igenda yangirika buhoro buhoro mugihe kugeza igeze kuri zeru, bikerekana iherezo ryigihe cyo gukira (trr).

Ibintu bigira ingaruka kubisubirana

Ibiranga gusubira inyuma biranga diode yumubiri MOSFET iterwa nibintu byinshi:

Imiterere ya MOSFET: Imiterere ya geometrie, urwego rwa doping, nibintu bifatika byimiterere yimbere ya MOSFET bigira uruhare runini muguhitamo Irrm na trr.

Imikorere ikora: Imyitwarire yo kugarura ibintu nayo igira ingaruka kumikorere, nka voltage ikoreshwa, umuvuduko wo guhinduranya, nubushyuhe.

Umuzunguruko wo hanze: Umuzunguruko wo hanze uhujwe na MOSFET urashobora guhindura inzira yo gukira kwinyuma, harimo kuba hariho imiyoboro ya snubber cyangwa imizigo yivangura.

Ingaruka zo Kugarura Kuburyo bwa MOSFET Porogaramu

Gusubira inyuma birashobora gutangiza ibibazo byinshi mubisabwa MOSFET:

Umuvuduko wa Voltage: Kugabanuka gutunguranye kwinyuma mugihe cyo gukira kwinyuma birashobora kubyara amashanyarazi ashobora kurenza voltage ya MOSFET yamenetse, bishobora kwangiza igikoresho.

Gutakaza Ingufu: Impinduka zisubira inyuma zigabanya ingufu, biganisha ku gutakaza amashanyarazi nibibazo bishobora gushyuha.

Urusaku rw'umuzunguruko: Inzira yo gukira ihindagurika irashobora gutera urusaku mu muzunguruko, bikagira ingaruka ku busugire bw'ikimenyetso kandi bishobora guteza imikorere mibi mu miyoboro yoroheje.

Kugabanya Ingaruka Zisubirana

Kugabanya ingaruka mbi zo gukira kwinyuma, tekinike nyinshi zirashobora gukoreshwa:

Inzira ya Snubber: Inzira ya Snubber, ubusanzwe igizwe na résistoriste na capacator, irashobora guhuzwa na MOSFET kugirango igabanye umuvuduko wa voltage kandi igabanye igihombo cyingufu mugihe cyo gukira kwinyuma.

Uburyo bworoshye bwo guhinduranya ibintu: tekinike yo guhinduranya byoroshye, nka pulse-ubugari bwa modulisiyo (PWM) cyangwa guhinduranya resonant, irashobora kugenzura ihinduka rya MOSFET gahoro gahoro, bikagabanya ubukana bwo gukira kwinyuma.

Guhitamo MOSFETs hamwe na Reverse Recover Recovery: MOSFETs hamwe na Irrm yo hepfo na trr irashobora gutoranywa kugirango hagabanuke ingaruka zo gukira kwinyuma kumikorere yumuzunguruko.

Umwanzuro

Gusubirana inyuma muri MOSFET ya diode yumubiri ni ikintu cyihariye gishobora kugira ingaruka kumikorere yibikoresho no gushushanya. Gusobanukirwa nuburyo, ibintu bigira ingaruka, hamwe ningaruka zo gukira kwinyuma ningirakamaro muguhitamo MOSFETs ikwiye no gukoresha tekinike ya mituweli kugirango imikorere yumuzunguruko ibe myiza kandi yizewe. Nkuko MOSFETs ikomeje kugira uruhare runini muri sisitemu ya elegitoroniki, gukemura ibibazo bisubira inyuma bikomeza kuba ikintu cyingenzi cyo gushushanya umuziki no guhitamo ibikoresho.