Ibisobanuro bya buri kintu cyimbaraga MOSFETs

VDSS Umuyoboro ntarengwa-Inkomoko ya voltage

Hamwe n'inkomoko y'irembo rigufi, igipimo cya voltage-isoko ya voltage (VDSS) ni voltage ntarengwa ishobora gukoreshwa kumasoko y'amazi atavunitse. Ukurikije ubushyuhe, voltage nyayo yamenetse ishobora kuba munsi ya VDSS yagenwe. Ushaka ibisobanuro birambuye bya V (BR) DSS, reba Electrostatic

Ushaka ibisobanuro birambuye bya V (BR) DSS, reba Ibiranga Electrostatike.

VGS Irembo ntarengwa Inkomoko yumuriro

Igipimo cya voltage ya VGS nigipimo ntarengwa gishobora gukoreshwa hagati y amarembo yinkingi. Intego nyamukuru yo gushyiraho urwego rwa voltage ni ukurinda kwangirika kwa oxyde yatewe na voltage ikabije. Umuvuduko nyawo oxyde yo mu irembo ishobora kwihanganira irarenze cyane voltage yagenwe, ariko izatandukana nuburyo bwo gukora.

Irembo nyirizina rishobora kwihanganira imbaraga nyinshi zirenze iz'umuvuduko wagenwe, ariko ibi bizatandukana nuburyo bwo gukora, bityo rero kubika VGS muri voltage yagenwe bizatuma kwizerwa kwa porogaramu.

ID - Gukomeza Kumeneka

Indangamuntu isobanurwa nkibishobora kwemerwa bikomeza DC ihindagurika ryubushyuhe ntarengwa, TJ (max), hamwe nubushyuhe bwubushyuhe bwa 25 ° C cyangwa burenga. Iyi parameter nigikorwa cyo kurwanya ubushyuhe bwapimwe hagati yisangano nurubanza, RθJC, nubushyuhe bwurubanza:

Guhindura igihombo ntabwo biri mubiranga kandi biragoye kugumana ubushyuhe bwubuso bwa 25 ° C (Tcase) kugirango bukoreshwe mubikorwa. Kubwibyo, guhinduranya kwukuri muburyo bukomeye bwo guhinduranya porogaramu mubisanzwe ni munsi ya kimwe cya kabiri cyurwego rwindangamuntu @ TC = 25 ° C, mubisanzwe murwego rwa 1/3 kugeza 1/4. byuzuzanya.

Byongeye kandi, indangamuntu ku bushyuhe bwihariye irashobora kugereranywa niba irwanya ubushyuhe JA ikoreshwa, nigiciro cyukuri.

IDM - Impulse Drain Yubu

Iyi parameter yerekana ingano yimashanyarazi igikoresho gishobora gukora, kiri hejuru cyane kurenza DC ikomeza. Intego yo gusobanura IDM ni: akarere ka ohmic kumurongo. Kuri irembo runaka-isoko ya voltage ,.BYINSHIikora hamwe numuyoboro ntarengwa uhari

ikigezweho. Nkuko bigaragara ku gishushanyo, kuri irembo ryatanzwe-isoko ya voltage, niba aho ikorera iherereye mukarere kagororotse, kwiyongera kwumuyoboro wamazi bizamura umuyaga w-isoko, byongera igihombo cyumuyoboro. Kumara igihe kinini kumashanyarazi menshi bizaviramo gutsindwa kwibikoresho. Kubera iyo mpamvu

Kubwibyo, IDM nominal igomba gushyirwaho munsi yakarere kuri voltage isanzwe ya moteri. Ahantu ho guca mukarere ni ku masangano ya Vgs nu murongo.

Kubwibyo, hejuru yubucucike buri hejuru igomba gushyirwaho kugirango wirinde chip gushyuha cyane no gutwikwa. Ibi nibyingenzi kugirango wirinde umuvuduko ukabije unyuze muri pake iyobora, kubera ko rimwe na rimwe "ihuriro ridakomeye" kuri chip yose ntabwo ari chip, ariko paki irayobora.

Urebye aho ingaruka ziterwa nubushyuhe kuri IDM, kwiyongera kwubushyuhe biterwa nubugari bwimisemburo, intera yigihe hagati yimisemburo, ikwirakwizwa ryubushyuhe, RDS (kuri), hamwe nubushuhe hamwe na amplitude yumuvuduko wimpanuka. Guhaza gusa ko impanuka ya pulse itarenga imipaka ya IDM ntabwo yemeza ko ubushyuhe bwihuza

ntirenza agaciro ntarengwa kemewe. Ubushyuhe bwihuza munsi yumuyaga urashobora kugereranywa hifashishijwe ikiganiro kijyanye no kurwanya ubushyuhe bwigihe gito muri Thermal and Mechanical Properties.

PD - Igiteranyo Cyemewe Cyuzuye Umuyoboro

Umuyoboro Wose Wemerewe Gukwirakwiza Umuyoboro uhindura imbaraga ntarengwa zishobora gukwirakwizwa nigikoresho kandi gishobora kugaragazwa nkigikorwa cyubushyuhe ntarengwa bwo guhuza hamwe nubushyuhe bwumuriro mubushyuhe bwa 25 ° C.

TJ, TSTG - Gukora no Kubika Ibidukikije Ubushyuhe

Ibipimo byombi bihinduranya ubushyuhe bwubushyuhe bwemewe nigikoresho gikora nububiko. Ubushyuhe buringaniye bwashyizweho kugirango buhuze ubuzima buke bwibikoresho. Kugenzura niba igikoresho gikora muri ubu bushyuhe buzagura cyane ibikorwa byacyo.

Ingufu-imwe imwe ya pulse Avalanche Kumeneka Ingufu

 

Niba amashanyarazi arenze urugero (mubisanzwe biterwa no gutembera kwumuyaga no gutembera kwayobye) nturenze imbaraga zo kumeneka, igikoresho ntikizagabanuka kumeneka bityo ntigikeneye ubushobozi bwo gukwirakwiza inkangu. Ingufu zo gusenyuka kwa avalanche zihinduranya igihe gito igikoresho gishobora kwihanganira.

Ingufu zo kumeneka za Avalanche zisobanura agaciro keza k'umuvuduko w'akanya gato w'amashanyarazi igikoresho gishobora kwihanganira, kandi kikaba giterwa n'imbaraga zikeneye gukwirakwizwa kugira ngo inkangu ibeho.

Igikoresho gisobanura igipimo cy’ingufu za avalanche gisanzwe nacyo gisobanura igipimo cya EAS, gisa nubusobanuro nu gipimo cya UIS, kandi kigasobanura uburyo imbaraga zo gusenya inkangu zishobora gukoreshwa neza.

L nigiciro cyinduction na iD nigipimo cyimpanuka itemba muri inductor, ihindurwamo gitunguranye kumuyoboro wamazi mubikoresho byo gupima. Umuvuduko ukomoka kuri inductor urenze MOSFET yamenetse kandi bizaviramo gusenyuka. Iyo impanuka ya avalanche ibaye, ikigezweho muri inductor kizanyura mubikoresho bya MOSFET nubwo theBYINSHIni. Ingufu zibitswe muri inductor zisa nimbaraga zibitswe muri inductor yazimiye kandi ikwirakwizwa na MOSFET.

Iyo MOSFETs ihujwe kuburinganire, voltage yo kumeneka ntago ihwanye nibikoresho. Ibisanzwe bibaho nuko igikoresho kimwe aricyo cyambere cyo guhura no gusenyuka kwa avalanche hamwe nibishobora gukurikiraho kwangirika kwingufu (ingufu) zinyura muricyo gikoresho.

AMATwi - Ingufu zo Gusubiramo Avalanche

Ingufu zisubiramo zahindutse "inganda zinganda", ariko udashyizeho inshuro, ibindi bihombo nubunini bwo gukonjesha, iki kintu ntigisobanura. Ubushyuhe bwo gukwirakwiza (gukonjesha) akenshi bugenga ingufu zisubiramo. Biragoye kandi guhanura urwego rwingufu zatewe no gusenyuka kwa avalanche.

Biragoye kandi guhanura urwego rwingufu zatewe no gusenyuka kwa avalanche.

Igisobanuro nyacyo cyurwego rwa EAR ni uguhindura ingufu zisubiramo ingufu za avalanche igikoresho gishobora kwihanganira. Ubu busobanuro buteganya ko nta mbogamizi kuri frequence kugirango igikoresho kidashyuha, ibyo bikaba bifatika kubikoresho byose aho impanuka ishobora kugwa.

Nigitekerezo cyiza cyo gupima ubushyuhe bwigikoresho gikora cyangwa icyuma gishyushya kugirango urebe niba igikoresho cya MOSFET gishyuha cyane mugihe cyo kugenzura igishushanyo mbonera cy’ibikoresho, cyane cyane ku bikoresho ahari impanuka zishobora kuvuka.

IAR - Kumeneka kw'ibiza

Kubikoresho bimwe, imyifatire yuburyo bugezweho kuri chip mugihe cyo gusenyuka kwa avalanche bisaba ko IAR ya avalanche IAR iba mike. Muri ubu buryo, umuyaga wa avalanche uhinduka "icapiro ryiza" ryerekana ingufu za avalanche; irerekana ubushobozi nyabwo bwigikoresho.

Igice cya II Imiterere y'amashanyarazi

V (BR) DSS: Umuyoboro-Inkomoko yo Kumeneka Umuvuduko (Umuvuduko wo Kurimbura)

V. Umuyoboro wamazi wamazi muriki kibazo ni umuyaga wa avalanche.

V. Kuri -50 ° C, V (BR) DSS iri munsi yikigereranyo ntarengwa cyumuvuduko wamazi -50 ° C. Kuri -50 ° C, V (BR) DSS ni 90% yikigereranyo ntarengwa cy’amazi aturuka kuri 25 ° C.

VGS (th), VGS (kuzimya): Umuvuduko wa Threshold

VGS. ubushyuhe) nabyo birasobanuwe. Mubisanzwe, ibikoresho byose by irembo rya MOS bifite bitandukanye

inzitizi zingana zingana zizaba zitandukanye. Kubwibyo, intera yo gutandukana kwa VGS (th) irasobanuwe.VGS (th) ni coefficente yubushyuhe bubi, iyo ubushyuhe buzamutse, theBYINSHIGufungura kumurongo ugereranije wamashanyarazi isoko ya voltage.

RDS (kuri): Kurwanya

RDS (kuri) ni ukurwanya inkomoko yamazi yapimwe kumuyoboro wihariye (mubisanzwe kimwe cya kabiri cyindangamuntu), voltage yumuryango, na 25 ° C. RDS (kuri) ni imbaraga zo kurwanya imiyoboro yapimye kumuyoboro wihariye (mubisanzwe kimwe cya kabiri cyindangamuntu), voltage yumuryango, na 25 ° C.

IDSS: zero amarembo ya voltage yamashanyarazi

IDSS ni imyanda isohoka hagati yumuyoboro nisoko kuri voltage yihariye-isoko ya voltage iyo irembo-isoko ya voltage ari zeru. Kuva imyanda yamenetse yiyongera hamwe nubushyuhe, IDSS isobanurwa mubyumba byombi n'ubushyuhe bwinshi. Ikwirakwizwa ry'amashanyarazi kubera imiyoboro yamenetse irashobora kubarwa mugwiza IDSS na voltage iri hagati yisoko y'amazi, ubusanzwe ni ntangere.

IGSS - Irembo Inkomoko Kumeneka

IGSS numuyoboro usohoka unyura mumarembo kumasoko yihariye ya voltage.

Igice cya III Ibiranga amashanyarazi afite imbaraga

Ciss: Kwinjiza ubushobozi

Ubushobozi buri hagati y irembo nisoko, bupimye hamwe nikimenyetso cya AC mugabanya imiyoboro kumasoko, nubushobozi bwo kwinjiza; Ciss ikorwa muguhuza ubushobozi bwo gukuramo amarembo, Cgd, hamwe nubushobozi bwamarembo, Cgs, muburyo bubangikanye, cyangwa Ciss = Cgs + Cgd. Igikoresho gifunguye iyo ubushobozi bwinjiza bwishyuwe kuri voltage yumupaka, kandi burazimya iyo bisohotse kubiciro runaka. Kubwibyo, umushoferi wumuzunguruko na Ciss bigira ingaruka itaziguye kumurongo wo gufungura no kuzimya igikoresho.

Coss: Ubushobozi bwo gusohoka

Ubushobozi bwo gusohora nubushobozi buri hagati yamazi nisoko yapimwe nikimenyetso cya AC mugihe isoko y irembo rigufi, Coss ikorwa muguhuza ubushobozi bwamazi-Cd na capacitance ya Cgd, cyangwa Coss = Cds + Cgd. Kubintu byoroshye guhinduranya porogaramu, Coss ningirakamaro cyane kuko ishobora gutera resonance mukuzunguruka.

Crss: Hindura ubushobozi bwo kwimura

Ubushobozi bupimye hagati yumuyoboro n irembo hamwe nisoko ihagaze ni ubushobozi bwo guhererekanya ibintu. Ubushobozi bwo guhererekanya ibintu bihwanye nubushobozi bwo gukuramo amarembo, Cres = Cgd, kandi bakunze kwita Miller capacitance, nikimwe mubintu byingenzi byerekana kuzamuka no kugwa kwigihe.

Nibintu byingenzi muburyo bwo guhinduranya ibihe no kugwa, kandi bigira ingaruka no gutinda kuzimya. Ubushobozi bugabanuka uko umuyaga wamazi wiyongera, cyane cyane ibisohoka bisohoka hamwe nubushobozi bwo guhinduranya.

Qgs, Qgd, na Qg: Kwishyuza Irembo

Agaciro k'irembo ryerekana amafaranga yabitswe kuri capacitor hagati ya terefone. Kubera ko amafaranga yishyurwa kuri capacitori ahinduka hamwe na voltage mugihe cyo guhinduranya, ingaruka zo kwishyiriraho amarembo zikunze gutekerezwa mugushushanya inzitizi zumushoferi.

Qgs ni amafaranga yishyurwa kuva 0 kugeza kumwanya wambere, Qgd nigice kuva kumurongo wambere kugeza kumwanya wa kabiri (nanone bita "Miller" yishyurwa), naho Qg nigice kuva kuri 0 kugeza aho VGS ihwanye na disiki yihariye. voltage.

Imihindagurikire yimyuka iva hamwe nisoko ya voltage yamashanyarazi igira ingaruka ntoya ugereranije nagaciro kinjira mumarembo, kandi amarembo ntabwo ahinduka hamwe nubushyuhe. Ibizamini bisabwa. Igishushanyo cyamafaranga yishyurwa cyerekanwe kumpapuro zamakuru, harimo ihuriro ryikurikiranya ryamafaranga yo gutandukana kumurongo ugenda uhindagurika kandi bigenda bitandukana biva mumashanyarazi.

Irembo rijyanye no kwishyiriraho ibiciro bigenda bihindagurika kumurongo wamazi uhoraho hamwe na voltage itandukanye ya voltage yashyizwe mumibare. Mu gishushanyo, voltage ya plateau VGS (pl) yiyongera gake hamwe no kongera amashanyarazi (kandi bigabanuka no kugabanuka kwumuyaga). Umuvuduko wa plateau nawo uringaniza na voltage yinjirira, bityo voltage itandukanye itandukanye izabyara voltage itandukanye.

voltage.

Igishushanyo gikurikira kirasobanutse kandi gikoreshwa:

td (kuri): igihe cyo gutinda ku gihe

Igihe cyo gutinda ku gihe nigihe cyo kuva isoko yumuriro wa voltage izamuka ikagera kuri 10% yumubyigano wamashanyarazi kugeza igihe imiyoboro yamenetse ikazamuka ikagera kuri 10% yumuyaga wagenwe.

td (kuzimya): Igihe cyo gutinda

Igihe cyo kuzimya igihe cyo gutinda nigihe cyashize uhereye igihe irembo ryamasoko ya voltage yamanutse ikagera kuri 90% ya voltage yo mumarembo kugeza igihe imiyoboro yamenetse ikamanuka ikagera kuri 90% yumurongo wateganijwe. Ibi birerekana gutinda byabayeho mbere yuko ibyimurwa byimurwa.

tr: Haguruka Igihe

Igihe cyo kuzamuka nigihe gitwara kugirango imiyoboro yamazi izamuke kuva 10% igera kuri 90%.

tf: Igihe cyagwa

Igihe cyo kugwa nigihe gitwara kugirango imiyoboro yamazi igabanuke kuva 90% kugeza 10%.