Eyoqobo&entsha ic LMR14030SDDAR isilawuli sokutshintsha esidityanisiweyo seCurcuits ye-Electronics

Eyoqobo&entsha ic LMR14030SDDAR isilawuli esitshintshayo esidityanisiweyo se-Eletroniki Iicurcuits ezibonisiweyo

inkcazelo emfutshane:

I-LMR14030 yi-40 V , 3.5 I-step down regulator kunye ne-MOSFET ephezulu edibeneyo.Ngoluhlu olubanzi lwegalelo ukusuka kwi- 4 V ukuya kwi- 40 V , ifanelekile kwizicelo ezahlukeneyo ukusuka kwimizi-mveliso ukuya kwi-automotive ye-powerconditioning evela kwimithombo engalawulwayo .I-Regulators yangoku i-quiescent current yi-40 UA kwimowudi yokulala, elungele iinkqubo ezisebenza ngebhetri.I-Aultra-low 1 WA ngoku kwimowudi yokuvala inokwandisa ubomi bebhetri.Uluhlu olubanzi oluhlengahlengiswayo lwe-switchingfrequency luvumela nokuba ukusebenza kakuhle okanye ubungakanani be-extemalcomponent ukuba buphuculwe.Imbuyekezo yangaphakathi ithetha ukuba umsebenzisi ukhululekile kumsebenzi odidayo woyilo lwembuyekezo yelophu .Oku kunciphisa amacandelo angaphandle esixhobo .Ukuchaneka kokwenza igalelo kuvumela ukwenziwa lula kolawulo lomlawuli kunye nolandelelwano lwamandla enkqubo.Isixhobo sikwanalo neempawu zokhuselo ezakhelweyo ezifana nomjikelo-ngomjikelo wangoku umda, imvakalelo ye-thermal kunye nokuvalwa ngenxa yokuchithwa kwamandla amaninzi, kunye nokukhuselwa kwe-voltage ephumayo.

Thumela i-imeyile kuthi Khuphela i-Datesheet

Iinkcukacha zeMveliso

Iithegi zeMveliso

Iimpawu zeMveliso

UHLOBO	INKCAZO
Udidi	IiSekethe eziDityanisiweyo (ICs) I-PMIC - i-Voltage Regulators - i-DC DC Switching Regulators
Mfr	Texas Instruments
Uthotho	SIMPLE SWITCHER®
Iphakheji	Iteyiphu & neReel (TR) Sika iTape (CT) Digi-Reel®
SPQ	75Tube
Ubume beMveliso	Iyasebenza
Umsebenzi	Yehla
Uqwalaselo Lwemveliso	Okuhle
I-Topology	Buck
Uhlobo Lwemveliso	Iyahlengahlengiswa
Inani leZiphumo	1
I-Voltage-Igalelo (uMzu)	4V
I-Voltage-Input (Ubukhulu)	40V
Voltage-Imveliso (Min/Fixed)	0.8V
Voltage-Imveliso (Ubukhulu)	28V
Okwangoku -Isiphumo	3.5A
Ukuphindaphinda-Ukutshintsha	200kHz ~ 2.5MHz
Ungqamaniso loLungisanisi	No
Ubushushu bokusebenza	-40°C ~ 125°C (TJ)
Uhlobo lokuNqamisa	INtaba engaphezulu
Ipakethe / Ityala	8-PowerSOIC (0.154", 3.90mm Ububanzi)
Supplier Device Package	8-SO PowerPad
Inombolo yeMveliso esisiseko	LMR14030

Umahluko

Umahluko phakathi kwe-DC elawulwayo yokutshintsha unikezelo lwamandla kunye nonikezelo lwamandla omgca ngenkcazo
Umahluko wabo omkhulu ngumbane olawulwa ngumgca kwi-tube (ingaba yi-bipolar okanye i-MOSFET) isebenze kwimeko yomgca, ngelixa umbane wokutshintsha kwi-tube usebenza kwimeko yokutshintsha.
1.Inkcazelo ye-DC ilawula unikezelo lombane lokutshintsha
Ukunikezelwa kwamandla okutshintsha kuhambelana nombane wombane.Ukutshintsha ukunikezelwa kwamandla kukusebenzisa ityhubhu yokulawula isiphaluka kwi-high-speed channel channel kunye nokunqunyulwa.Amandla eDC kumandla aphezulu e-AC ukuya kwisiguquli sokuguqula umbane, ngaloo ndlela evelisa iseti efunekayo okanye iqela lombane!Ukuyibeka ngokulula, unikezelo lwamandla okutshintshayo luyi-transformer.Ukutshintsha unikezelo lwamandla kuphunyezwa ngoku: ukulungiswa kwakhona kwi-DC - ukuguqulwa kumbane ofunekayo we-AC (ubukhulu becala ukulungelelanisa umbane) - kwaye emva koko kulungiswe kwimveliso yombane we-DC.

2. Inkcazo yonikezelo lwamandla ombane
Unikezelo lwamandla ombane sisiguquli esiqala sehlisa i-voltage amplitude ye-alternating current kwaye emva koko siyilungise ngesekethe yokuhlaziya ukufumana i-pulsed current ngqo.Emva koko iyahluzwa ukufumana i-voltage ye-DC kunye ne-ripple voltage encinci.Ukufezekisa ukuchaneka okuphezulu kombane we-DC, kufuneka ilawulwe yi-voltage regulator circuit.
Okwesibini, umahluko phakathi komgaqo wokusebenza we-DC ulawula ukunikezelwa kwamandla okutshintsha kunye nonikezelo lombane oluhambelanayo

Umgaqo wokusebenza wokutshintsha unikezelo lwamandla.
1. Igalelo lamandla e-AC ahluzwe ngokulungiswa kwi-DC;
2. Ngokusebenzisa i-PWM ye-high-frequency (i-pulse width modulation) okanye i-pulse frequency modulation (PFM) yokulawula i-tube yokuguqula i-tube, i-DC iya kudibaniswa kwi-primary ye-switching transformer;
3. I-second of transformer switching ibangela i-high-frequency voltage, elungiswayo kwaye ihluzwe kumthwalo;
4. Inxalenye yemveliso ibuyiselwa kwisekethe yokulawula ngokusebenzisa isiphaluka esithile ukulawula umjikelezo we-PWM womsebenzi ukuphumeza umphumo ozinzile.

Umgaqo osebenzayo wonikezelo lwamandla ombane.
I-1.Umbane we-Linear ikakhulu ubandakanya i-frequency transformer, i-output rectifier filter, isiphaluka solawulo, isiphaluka sokukhusela, njl.
Unikezelo lombane lomda ngamandla okuqala e-AC ngombane we-transformer, kwaye emva koko ngesihluzo sokuhlaziya isekethe yokulungisa ukufumana amandla ombane eDC angazinzanga.Ukufezekisa ukuchaneka okuphezulu kombane we-DC, i-voltage ephumayo kufuneka ihlengahlengiswe ngengxelo yombane.Obu buchwephesha bokubonelela ngombane bukhule kakhulu kwaye bunokufikelela uzinzo oluphezulu kunye ne-ripple encinci kwaye ngaphandle kokuphazamiseka kunye nengxolo yokutshintsha izixhobo zombane.Nangona kunjalo, ukungabikho kwayo kukuba ifuna i-transformer enkulu kunye nenkulu, umthamo kunye nobunzima be-capacitor yokucoca efunekayo nayo inkulu kakhulu, kwaye i-voltage feedback circuit iyasebenza kwimo yomgca, ngoko kukho ukuhla kwe-voltage ethile kuhlengahlengiso. ityhubhu, ekuphumeni komsebenzi omkhulu wangoku, okukhokelela kusetyenziso lwamandla lwetyhubhu yohlengahlengiso inkulu kakhulu, uguqulo olusebenzayo oluphantsi, kodwa kunye nokufakela isinki esikhulu sobushushu.Olu nikezelo lwamandla alufanelekanga kwiikhompyuter kunye nezinye iimfuno zezixhobo, luya kutshintshwa ngokuthe ngcembe ngokutshintsha unikezelo lwamandla.

I-DC ilawula ukunikezelwa kwamandla okutshintsha kunye nombane ohambelanayo kwiimpawu zomahluko.
Iinzuzo eziphambili kunye nokungalunganga kokutshintsha ukunikezelwa kwamandla
Izinto eziluncedo: Ubungakanani obuncinci, ubunzima (umthamo kunye nobunzima be-20-30% kuphela yonikezelo lwamandla ombane), ukusebenza kakuhle okuphezulu (ngokubanzi ngama-60-70%, ngelixa umbane we-linear kuphela yi-30-40%), ukuchasana nokuphazamiseka kwabo. , uluhlu olubanzi lombane wokuphuma, ukumodareyitha.
Ukungalungi: Ngenxa ye-voltage ye-high-frequency eveliswa kwi-inverter circuit, kukho umlinganiselo othile wokuphazamiseka kwizixhobo ezijikelezayo.Ukhuseleko olulungileyo kunye nokufakwa komhlaba kuyafuneka.

Iimpawu zonikezelo lwamandla ngomgca.
Uzinzo oluphezulu, i-ripple encinci, ukuthembeka okuphezulu, kulula ukwenza kwimveliso yeendlela ezininzi ngokuqhubekayo unikezelo lwamandla oluhlengahlengiswayo.Ukungalungi kukuba zikhulu, zininzi, kwaye zingasebenzi kakuhle.Olu hlobo lonikezelo lwamandla olulawulwayo kwaye kukho iintlobo ezininzi, ukusuka kuhlobo lwemveliso lunokwahlulwa lube lunikezelo lwamandla ombane olulawulwayo, unikezelo lwamandla lwangoku kunye neseti yombane, uzinzo lwangoku kumbane ozinzileyo, kunye nowangoku (ezimbini) ukunikezwa Amandla.Ixabiso lemveliso linokwahlulwa libe yimveliso yombane esisigxina, uhlobo lohlengahlengiso lwebhendi, kunye ne-potentiometer zisoloko zihlengahlengiswa eziliqela.Ukusuka kwimveliso, isalathisi sinokuhlulwa sibe luhlobo lwesalathisi kunye nohlobo lokubonisa idijithali.

Umahluko phakathi konikezelo lwamandla okutshintsha olulawulwa yi-DC kunye nonikezelo lwamandla ombane kububanzi besicelo
1. Ukutshintsha uluhlu lonikezelo lwamandla lwesicelo
Ukutshintsha unikezelo lwamandla kuluhlu olupheleleyo lwamandla ombane, akukho mahluko ombane, ungasebenzisa itopology yesekethe eyahlukileyo ukufezekisa iimfuno ezahlukeneyo zemveliso.Izinga lohlengahlengiso kunye nemveliso ye-ripple ayiphezulu njenge-linear power supply, kwaye ukusebenza kakuhle kuphezulu.Ifuna amacandelo amaninzi eperipheral kunye neendleko eziphezulu.Isekethe intsonkothile.Ukutshintsha unikezelo lwamandla olulawulwa yi-DC luyi-flyback ene-single-end, i-single-ended forward, i-half-bridge, push-pull, kunye ne-full-bridge circuit circuit.Umahluko osisiseko phakathi kwawo kunye nonikezelo lwamandla olulawulweyo lomgca kukuba i-transformer kwisekethe ayisebenzi kwi-frequency yokusebenza kodwa kumashumi amaninzi e-kilohertz ukuya kwiimegahertz ezininzi.Umbhobho wamandla awusebenzi kwindawo yomgca, kodwa kwindawo yokuzalisa kunye neyokunqunyulwa, oko kukuthi kwisimo sokutshintsha;uhlobo lokutshintsha unikezelo lwamandla olulawulwayo lwe-DC luthiwa njalo.
2. Umda wokusetyenziswa kombane wombane
Unikezelo lwamandla alawulwa ngomgca luhlala lusetyenziswa kusetyenziso lwevoltage ephantsi, njengee-LDO kufuneka zihlangabezane nomahluko othile wombane.Izinga lokulawula amandla ombane wokuphuma kunye ne-ripple zingcono, ukusebenza kakuhle kuphantsi, imfuno yamacandelo e-peripheral incinci, kwaye ixabiso liphantsi.Isiphaluka silula.

Malunga neMveliso

I-LMR14030 yi-40 V, 3.5 I-step down regulator ene-MOSFET ehlangeneyo ephezulu.Ngoluhlu olubanzi lwegalelo ukusuka kwi-4 V ukuya kwi-40 V, ifanelekile kwizicelo ezahlukeneyo ukusuka kumashishini ukuya kwi-automotive yokulungiswa kwamandla ukusuka kwimithombo engalawulwayo.Umsinga othe cwaka womlawuli ngama-40 µA kwimowudi yokuLala, elungele iinkqubo ezisebenza ngebhetri.I-ultra-low 1 µA yangoku kwimowudi yokucima inokwandisa ubomi bebhetri.Uluhlu olubanzi oluguquguqukayo oluguquguqukayo luvumela ukuba ukusebenza kakuhle okanye ubungakanani becandelo langaphandle buphuculwe.Imbuyekezo yelophu yangaphakathi ithetha ukuba umsebenzisi ukhululekile kumsebenzi odinayo woyilo lwembuyekezo yelophu.Oku kukwanciphisa amacandelo angaphandle esixhobo.Ukuchaneka kwenza igalelo livumela ukwenziwa lula kolawulo lomlawuli kunye nolandelelwano lwamandla enkqubo.Isixhobo sikwanalo neempawu zokhuseleko ezakhelwe ngaphakathi ezifana nomda wangoku womjikelo-ngomjikelo, ukuva i-thermal nokuvala ngenxa yokutshatyalaliswa kwamandla amaninzi, kunye nokukhuselwa kwe-overvoltage ephumayo.

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