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I-ic yasekuqaleni nentsha LMR14030SDDAR isilawuli esihlanganisiwe se-chip Electronics Curcuits

I-ic yasekuqaleni&entsha LMR14030SDDAR isilawuli esihlanganisiwe se-chip Electronics Curcuits Isithombe Esifakiwe
  • I-ic yasekuqaleni nentsha LMR14030SDDAR isilawuli esihlanganisiwe se-chip Electronics Curcuits

incazelo emfushane:

I-LMR14030 iyi-40 V , 3.5 Isilawuli sezinyathelo eziya phansi esine-MOSFET ehlangene yohlangothi oluphezulu .Ngebanga lokufaka okubanzi ukusuka ku-4 V ukuya ku-40 V , ilungele izinhlelo zokusebenza ezihlukahlukene kusukela kwezimboni kuya kwezezimoto ze-powerconditioning kusuka emithonjeni engalawulwa .Ama-regulators athule amanje yi-40 UA kumodi yokulala, elungele amasistimu asebenza ngebhethri.I-Aultra-low 1 WA yamanje kumodi yokuvala ingaqhubeka ende impilo yebhethri .Ibanga elibanzi elilungisekayo le-switchingfrequency livumela ukusebenza kahle noma usayizi we-extemalcomponent ukuthi uthuthukiswe .Isinxephezelo sangaphakathi se-loop sisho ukuthi umsebenzisi ukhululekile emsebenzini odidayo womklamo wesinxephezelo seluphu .Lokhu futhi kunciphisa izingxenye zangaphandle zedivayisi .Ukunemba kokunika amandla okokufaka kuvumela ukwenziwa lula kokulawula isilawuli nokulandelana kwamandla esistimu.Idivayisi iphinde ibe nezici zokuvikela ezakhelwe ngaphakathi ezifana nomkhawulo wamanje womjikelezo nomjikelezo , inzwa yokushisa kanye nokuvala shaqa ngenxa yokushabalala kwamandla amaningi , nokuvikelwa kokuphuma kwe-voltage ngokweqile


Landa i-Datesheet

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Izimfanelo Zomkhiqizo

UHLOBO

DESCRIPTION

Isigaba

Izifunda Ezihlanganisiwe (ICs)

PMIC - Voltage Regulators - DC DC Ukushintsha Regulators

Mfr

Texas Instruments

Uchungechunge

SIMPLE SWITCHER®

Iphakheji

I-Tape & Reel (TR)

Cut Tape (CT)

I-Digi-Reel®

SPQ

75Tube

Isimo somkhiqizo

Iyasebenza

Umsebenzi

Isinyathelo-Phansi

Ukucushwa Kokukhiphayo

Okuhle

I-Topology

Buck

Uhlobo Lokukhiphayo

Kuyalungiseka

Inombolo Yemiphumela

1

I-Voltage - Okokufaka (Okuncane)

4V

I-Voltage - Okokufaka (Ubukhulu)

40V

I-Voltage - Okukhiphayo (Okuncane/Okulungisiwe)

0.8V

I-Voltage - Okukhiphayo (Ubukhulu)

28V

Okwamanje - Okukhiphayo

3.5A

Imvamisa - Ukushintsha

200kHz ~ 2.5MHz

I-synchronous Rectifier

No

Izinga Lokushisa Lokusebenza

-40°C ~ 125°C (TJ)

Uhlobo Lokukhweza

INtaba Engaphezulu

Iphakheji / Ikesi

8-PowerSOIC (0.154", 3.90mm Ububanzi)

Iphakheji Yedivayisi Yomhlinzeki

8-SO I-PowerPad

Inombolo Yomkhiqizo Eyisisekelo

I-LMR14030

Umehluko

Umehluko phakathi kwe-DC elawulwayo yokushintsha kwamandla kagesi namandla alayini ngokwencazelo
Umehluko wabo omkhulu ukunikezwa kwamandla okulawulwa ngomugqa kushubhu (okungaba yi-bipolar noma i-MOSFET) kusimo somugqa, kuyilapho ukunikezwa kwamandla okushintshwa kushubhu kusebenza esimweni sokushintsha.
1.Incazelo ye-DC elawula ukushintshwa kwamandla kagesi
Ukunikezwa kwamandla okushintshayo kuhlobene nokunikezwa kwamandla omugqa.Ukushintsha ugesi kungokusebenzisa ishubhu yokushintsha yesilawuli sesekhethi ukuze kudlule isiteshi esinesivinini esikhulu nokunqanyulwa.Amandla e-DC abe namandla aphezulu e-AC ku-transformer ukuze aguqule i-voltage, ngaleyo ndlela akhiqize isethi edingekayo noma iqembu lamandla kagesi!Ukuyibeka kalula, ukunikezwa kwamandla okushintshayo kuyi-transformer.Ukushintsha ukunikezwa kwamandla kufinyelelwa: ngokulungiswa kabusha ku-DC - kuguqulelwe ku-voltage edingekayo ye-AC (ikakhulukazi ukulungisa i-voltage) - bese kulungiswa ku-DC voltage okukhiphayo.

2. Incazelo yokunikezwa kwamandla kalayini
Ukunikezwa kwamandla olayini kuyi-transformer eqala yehlisa i-voltage amplitude ye-alternating current bese iyilungisa ngomjikelezo wokulungisa ukuze ithole i-pulsed direct current.Ibe isihlungwa ukuze kutholwe i-voltage ye-DC ene-ripple voltage encane.Ukuze uthole ukunemba okuphezulu kwe-DC voltage, kufanele ilawulwe yisekethe yesilawuli se-voltage.
Okwesibili, umehluko phakathi kwesimiso sokusebenza se-DC esilawula ukushintshwa kwamandla kagesi kanye nokunikezwa kwamandla omugqa

Umgomo wokusebenza wokushintsha ukunikezwa kwamandla.
1. Okokufaka kwamandla e-AC kuhlungwe ngokulungiswa ku-DC;
2. Nge-PWM ye-high-frequency (i-pulse wide modulation) noma i-pulse frequency modulation (PFM) control switching tube, i-DC izokwengezwa ku-primary of switching transformer;
3. Isesibili se-switching transformer senza i-voltage ephezulu-frequency, elungiswayo futhi ihlungwe emthwalweni;
4. Ingxenye ephumayo ibuyiselwa kumjikelezo wokulawula ngokusebenzisa isifunda esithile ukulawula umjikelezo womsebenzi we-PWM ukuze kuzuzwe okukhiphayo okuzinzile.

Umgomo wokusebenza wokuphakelwa kwamandla kalayini.
1. Ukunikezwa kwamandla olayini ikakhulukazi kufaka phakathi i-frequency transformer, isihlungi sokubuyisela okukhiphayo, isifunda sokulawula, isekethe yokuvikela, njll...
Ukunikezwa kwamandla olayini amandla okuqala e-AC ngokusebenzisa i-voltage ye-transformer, bese kuba ngesihlungi sokulungisa kabusha isekethe ukuze uthole i-voltage ye-DC engazinzile.Ukuze uthole ukunemba okuphezulu kwe-voltage ye-DC, i-voltage ephumayo kufanele ilungiswe ngempendulo ye-voltage.Lobu buchwepheshe bokuhlinzeka ngogesi buvuthwe kakhulu futhi bungafinyelela ukuzinza okuphezulu ngokunyakaza okuncane kakhulu futhi ngaphandle kokuphazamiseka nomsindo okushintshanisa amandla kagesi.Kodwa-ke, ukonakala kwayo ukuthi kudinga i-transformer enkulu neyinqwaba, ivolumu nesisindo se-capacitor yesihlungi esidingekayo nakho kukhulu impela, futhi isekethe yempendulo ye-voltage isebenza esimweni somugqa, ngakho-ke kukhona ukwehla kwe-voltage ethile ekulungiseni. ithubhu, ekuphumeni kwamandla amakhulu okusebenza, okuholela ekusetshenzisweni kwamandla kweshubhu yokulungisa kukhulu kakhulu, ukusebenza kahle kokuguqulwa okuphansi, kodwa futhi ukufaka usinki omkhulu wokushisa.Lokhu kunikezwa kwamandla akufanelekile kumakhompyutha nezinye izidingo zemishini, kancane kancane kuzothathelwa indawo ngokushintsha ukunikezwa kwamandla.

I-DC elawula ukushintshwa kwamandla kagesi kanye nokunikezwa kwamandla omugqa kuzici zomehluko.
Izinzuzo eziyinhloko kanye nebubi bokushintsha kwamandla kagesi
Izinzuzo: Usayizi omncane, ongasindi (ivolumu nesisindo esingama-20-30% kuphela wamandla omugqa), ukusebenza kahle okuphezulu (ngokuvamile ama-60-70%, kuyilapho ugesi womugqa ungama-30-40% kuphela, ukuphikisana kwawo nokuphazamiseka. , anhlobonhlobo okukhipha voltage, modularity.
Ukungalungi: Ngenxa ye-voltage ye-high-frequency ekhiqizwa kumjikelezo we-inverter, kukhona inani elithile lokuphazamiseka kwemishini ezungezile.Kudingeka ukuvikela okuhle nokufaka umhlabathi.

Izici zokunikezwa kwamandla ezilayini.
Ukuzinza okuphezulu, i-ripple encane, ukwethembeka okuphezulu, kulula ukwenza kube okukhiphayo okunezindlela eziningi okuqhubekayo okuguquguqukayo kwamandla.Okubi ukuthi makhulu, makhulu, futhi awasebenzi kahle.Lolu hlobo lokunikezwa kwamandla okulawulwayo futhi kunezinhlobo eziningi, kusukela kusimo sokuphumayo kungahlukaniswa kube amandla kagesi alawulwayo, ukunikezwa kwamandla alawulwayo kanye nesethi ye-voltage, ukuzinza kwamanje ku-voltage ezinzile, kanye nesimanje (ezimbili-ezimbili) ukunikezwa kwamandla kagesi.Inani lokuphumayo lingahlukaniswa libe ngumthombo wamandla ophumayo ongaguquki, uhlobo lokulungiswa kwe-band switch, futhi i-potentiometer ishintshwa ngokuqhubekayo eziningana.Kusukela kokuphumayo, inkomba ingahlukaniswa ngohlobo lwenkomba yesikhombi kanye nohlobo lokubonisa lwedijithali.

I-DC elawula ukushintshwa kwamandla kagesi kanye nokunikezwa kwamandla omugqa kuzici zomehluko.
Izinzuzo eziyinhloko kanye nebubi bokushintsha kwamandla kagesi
Izinzuzo: Usayizi omncane, ongasindi (ivolumu nesisindo esingama-20-30% kuphela wamandla omugqa), ukusebenza kahle okuphezulu (ngokuvamile ama-60-70%, kuyilapho ugesi womugqa ungama-30-40% kuphela, ukuphikisana kwawo nokuphazamiseka. , anhlobonhlobo okukhipha voltage, modularity.
Ukungalungi: Ngenxa ye-voltage ye-high-frequency ekhiqizwa kumjikelezo we-inverter, kukhona inani elithile lokuphazamiseka kwemishini ezungezile.Kudingeka ukuvikela okuhle nokufaka umhlabathi.

Umehluko phakathi kokunikezwa kwamandla okushintsha alawulwa yi-DC kanye namandla kagesi alayini kuhlelo lohlelo lokusebenza
1. Ukushintsha uhla lokunikezwa kwamandla kwesicelo
Ukushintsha ukunikezwa kwamandla kububanzi obugcwele be-voltage, akukho voltheji ehlukile, ungasebenzisa i-topology yesekethe ehlukile ukuze uzuze izidingo ezihlukene zokuphumayo.Izinga lokulungiswa kanye nokuphumayo kwe-ripple akuphezulu njengokunikezwa kwamandla omugqa, futhi ukusebenza kahle kuphezulu.Idinga izingxenye eziningi ze-peripheral kanye nezindleko eziphezulu.Isifunda siyinkimbinkimbi.Ukushintsha izinsiza zamandla alawulwa yi-DC ngokuyinhloko ziyi-flyback ene-end-end-end, i-single ended forward, i-half-bridge, i-push-pull, nezinhlobo zesekhethi ze-full-bridge.Umehluko oyisisekelo phakathi kwayo kanye nokunikezwa kwamandla okulawulwa ngomugqa ukuthi isiguquli esiseseketheni asisebenzi kumafrikhwensi okusebenza kodwa emashumini ambalwa e-kilohertz kuya kuma-megahertz amaningana.Ishubhu yamandla ayisebenzi endaweni yomugqa, kodwa endaweni yokugcwala kanye neyokunqamula, okungukuthi esimweni sokushintsha;Uhlobo lokushintshwa kwamandla kagesi we-DC lubizwa kanjalo.
2. Ububanzi bokusetshenziswa kokuphakelwa kwamandla kalayini
Izimpahla zamandla alawulwa ngomugqa zivame ukusetshenziswa ezinhlelweni ezinevoltheji ephansi, njengama-LDO adinga ukuhlangabezana nomehluko othile kagesi.Izinga lokulawulwa kwamandla kagesi okukhiphayo kanye ne-ripple lingcono, ukusebenza kahle kuphansi, isidingo sezingxenye ze-peripheral sincane, futhi izindleko ziphansi.Isifunda silula.

Mayelana Nomkhiqizo

I-LMR14030 iyisilawuli esingu-40 V, 3.5 A isinyathelo esiphansi esine-MOSFET ehlangene yohlangothi oluphezulu.Ngebanga elibanzi lokokufaka ukusuka ku-4 V kuye ku-40 V, ilungele izinhlelo zokusebenza ezihlukahlukene kusukela ezimbonini kuya ezimotweni zokulungiswa kwamandla kusuka emithonjeni engalawulwa.Ukuthula kwesilawuli kungu-40 µA kumodi yokulala, elungele amasistimu asebenza ngebhethri.I-ultra-low 1 µA yamanje kumodi yokuvala shaqa ingaqhubeka endeze impilo yebhethri.Ibanga lefrikhwensi yokushintsha elilungisekayo elibanzi livumela ukusebenza kahle noma usayizi wengxenye yangaphandle ukuthi uthuthukiswe.Isinxephezelo seluphu yangaphakathi sisho ukuthi umsebenzisi ukhululekile emsebenzini oyisicefe wokuklama isinxephezelo seluphu.Lokhu futhi kunciphisa izingxenye zangaphandle zedivayisi.Ukunemba kokunika amandla okokufaka kuvumela ukwenziwa lula kokulawula isilawuli nokulandelana kwamandla esistimu.Idivayisi futhi inezici zokuvikela ezakhelwe ngaphakathi ezifana nomkhawulo wamanje womjikelezo nomjikelezo, inzwa yokushisa nokuvalwa ngenxa yokushabalaliswa kwamandla amaningi, nokuvikelwa kokukhishwa kwe-voltage.

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