Asal&Cusub ic LMR14030SDDAR beddelka xeerbeegtida isku dhafan ee curcuits Electronics
Sifooyinka Alaabta
| NOOCA | SHARAXA |
| Qaybta | Wareegyada isku dhafan (ICs) PMIC - Xakamaynta korantada - Xakamaynta beddelka DC DC |
| Mfr | Qalabka Texas |
| Taxane | FUDUD SWITCHER® |
| Xidhmada | Cajalad & Gariir (TR) Jaran Cajalad (CT) Digi-Reel® |
| SPQ | 75Tube |
| Xaaladda Alaabta | Firfircoon |
| Shaqada | Hoos-u-dhac |
| Habaynta wax soo saarka | Wanagsan |
| Topology | Buck |
| Nooca wax soo saarka | la hagaajin karo |
| Tirada Waxsoosaarka | 1 |
| Voltage - Gelida (min) | 4V |
| Voltage - Gelida (Max) | 40V |
| Voltage - Soo-saarka | 0.8V |
| Voltage - Wax soo saarka (Max) | 28V |
| Hadda - Wax-soo-saarka | 3.5A |
| Soo noqnoqda - Beddelka | 200kHz ~ 2.5Mhz |
| Dib-u-habayn isku xidhan | No |
| Heerkulka shaqada | -40°C ~ 125°C (TJ) |
| Nooca Koritaanka | Dusha sare |
| Xidhmada / Kiis | 8-PowerSOIC (0.154, 3.90mm ballac) |
| Xidhmada Aaladda Bixiyaha | 8-SO PowerPad |
| Lambarka Alaabta Saldhigga | LMR14030 |
Farqiga
Farqiga u dhexeeya sahayda korantada ee ay maamusho DC iyo sahayda korantada tooska ah qeexitaan ahaan
Kala duwanaanshahooda weyni waa sahayda tooska ah ee lagu hagayo ee tuubada (mid laba-cirifoodka ama MOSFET) ka shaqaynaysa gobolka toosan, halka sahayda wareejinta ee tuubada ay ku shaqaynayso gobolka beddelka.
1. Qeexitaanka sahayda korantada ee ay maamusho DC
Korontada beddesha waxay la mid tahay korontada toosan.Beddelka sahayda korontadu waa iyada oo loo marayo tuubada wareejinta kontoroolka wareegga si loogu gudbo kanaalka xawaaraha sare leh iyo goynta.Awoodda DC-ga oo u gudubta awoodda AC-soo-celinta-sare ee korontadu si loogu beddelo korantada, taas oo soo saarta qalabka loo baahan yahay ama kooxda korantada!Si fudud loo dhigo, sahayda korontadu waa beddelka.Korontada beddelashada waxaa lagu gaaraa: dib-u-habaynta DC- oo loo rogo tamarta loo baahan yahay AC (inta badan si loo hagaajiyo tamarta) - ka dibna lagu saxo wax soo saarka danabka DC.
2. Qeexida tamarta toosan
Korontada tooska ah waa koronto-bixiye marka hore yareeya baaxadda korantada ee hadda beddelka ah ka dibna ku saxa wareegga wareegga si uu u helo qulqulka tooska ah.Kadibna waa la sifeeyaa si loo helo danab DC ah oo leh koronto yar.Si loo gaaro korantada saxda ah ee saxda ah ee DC, waa in lagu nidaamiyaa wareegga xakamaynta tamarta.
Marka labaad, faraqa u dhexeeya mabda'a shaqada ee sahayda korantada ee ay maamusho DC iyo sahay koronto toosan
Mabda'a shaqada ee wareejinta sahayda korontada.
1. gelinta korantada AC oo lagu sifeeyay dib u hagaajinta DC;
2. Iyada oo loo marayo soo noqnoqoshada sare ee PWM (habaynta ballaca garaaca wadnaha) ama habaynta soo noqnoqda garaaca wadnaha (PFM) tuubada wareejinta, DC waxaa lagu dari doonaa aasaasiga ah ee beddelka beddelka;
3. Qaybta labaad ee beddelka beddelka waxay keentaa koronto-soo noqnoqda sare, kaas oo la saxo oo lagu sifeeyo culeyska;
4. Qaybta wax soo saarka ayaa dib loogu celiyaa wareegga xakamaynta iyada oo loo marayo wareeg gaar ah si loo xakameeyo wareegga waajibaadka PWM si loo gaaro wax soo saar deggan.
Mabda'a shaqada ee korontada toosan.
1.Linear korontada inta badan waxaa ka mid ah transformer-ka soo noqnoqda, filter rectifier saarka, wareegga xakamaynta, wareegga ilaalinta, iwm.
Korontada tooska ah waa awooda AC ee ugu horeysa iyada oo loo marayo korantada transformer-ka, ka dibna iyada oo loo marayo shaandhada rectifier rectifier si loo helo danabka DC ee aan degganayn.Si loo gaaro saxnaanta sare ee danab DC, danab wax soo saarka waa in lagu hagaajiyo by jawaab celinta danab.Tignoolajiyadan sahayda korontadu waa mid aad u qaan-gaar ah waxayna ku gaari kartaa xasillooni sare iyadoo ay aad u yar tahay qulqulatooyin aan la faragelin iyo buuqa ay leeyihiin beddelka sahayda korontada.Si kastaba ha ahaatee, faa'iido darrada ay tahay in ay u baahan tahay transformer weyn oo weyn, mugga iyo miisaanka capacitor filter loo baahan yahay ayaa sidoo kale aad u weyn, iyo wareegga jawaab-celinta danabku waxay ku shaqeyneysaa xaalad toosan, sidaas darteed waxaa jira hoos u dhac ku yimaada hagaajinta. tube, in wax soo saarka ee hadda shaqeeya ka weyn, taasoo keentay in isticmaalka korontada ee tuubada hagaajinta waa mid aad u weyn, waxtarka beddelka hoose, laakiin sidoo kale in la rakibo weel kulaylka weyn.Korontadan kuma habboona kombuyuutarrada iyo baahiyaha kale ee qalabka, waxa si tartiib tartiib ah loogu beddeli doonaa beddelka sahayda korontada.
Korontada wareejinta ee DC ayaa nidaamisay iyo sahay koronto toosan oo sifaha farqiga u ah.
Faa'iidooyinka iyo khasaaraha ugu muhiimsan ee wareejinta korontada
Faa'iidooyinka: Cabbir yar, khafiif ah (mugga iyo miisaanka kaliya 20-30% ee korontada tooska ah), waxtarka sare (guud ahaan 60-70%, halka korontadu ay tahay kaliya 30-40%), faragelintooda ka hortagga , tiro balaadhan oo ah danab wax soo saarka, modularity.
Khasaaraha: Sababo la xiriira koronta-soo noqnoqoshada sare ee ka dhashay wareegga beddelka, waxaa jira xaddi go'an oo faragelin ah qalabka ku xeeran.Gaashaanka wanaagsan iyo carrada ayaa loo baahan yahay.
Tilmaamaha sahayda korontada toosan.
Degenaansho sare, doog yar, isku hallayn sare, fududahay in la sameeyo wax soo saar dhinacyo badan leh oo si joogto ah loo hagaajin karo.Khasaaraha ayaa ah in ay weyn yihiin, baaxad weyn yihiin, iyo kuwo aan tayo lahayn.Noocan ka mid ah sahayda korantada ee la habeeyey oo ay jiraan noocyo badan, laga bilaabo dabeecadda wax soo saarka waxaa loo qaybin karaa koronto la hagaajiyay, sahayda tamarta hadda jirta iyo set of danab, xasilinta hadda ee danab deggan, iyo hadda (dual-stable). korontada.Qiimaha wax-soo-saarka waxaa loo qaybin karaa sahay koronto oo go'an, nooca hagaajinta band, iyo potentiometer si joogto ah ayaa loo hagaajin karaa dhowr.Laga soo bilaabo wax soo saarka, tilmaanta waxaa loo qaybin karaa nooca tilmaanta iyo nooca bandhiga dhijitaalka ah.
Korontada wareejinta ee DC ayaa nidaamisay iyo sahay koronto toosan oo sifaha farqiga u ah.
Faa'iidooyinka iyo khasaaraha ugu muhiimsan ee wareejinta korontada
Faa'iidooyinka: Cabbir yar, khafiif ah (mugga iyo miisaanka kaliya 20-30% ee korontada tooska ah), waxtarka sare (guud ahaan 60-70%, halka korontadu ay tahay kaliya 30-40%), faragelintooda ka hortagga , tiro balaadhan oo ah danab wax soo saarka, modularity.
Khasaaraha: Sababo la xiriira koronta-soo noqnoqoshada sare ee ka dhashay wareegga beddelka, waxaa jira xaddi go'an oo faragelin ah qalabka ku xeeran.Gaashaanka wanaagsan iyo carrada ayaa loo baahan yahay.
Farqiga u dhexeeya sahayda korantada ee ay maamusho DC-ga iyo saadka korantada tooska ah ee baaxadda codsiga
1. Beddelka kala duwan ee sahayda korantada ee codsiga
Beddelka sahayda korantada ee kala duwanaanshaha tamarta buuxda, ma jirto danab kala duwan, waxaad isticmaali kartaa topology wareeg ah oo kala duwan si aad u gaarto shuruudaha wax soo saarka kala duwan.Heerka hagaajinta iyo qulqulka soo-saarku maaha mid sarreeya sida saadka korantada tooska ah, waxtarkuna waa mid sarreeya.Waxay u baahan tahay qaybo badan oo durugsan iyo kharash badan.Wareeggu waa mid adag.Beddelashada sahayda korantada ee DC-ku hagaajisay inta badan waa duul-dhamaad hal-dhammaad ah, hore-u-dhammaad ah, buundo badhkeed, riix-jiid, iyo noocyada wareegyada buundada buuxa.Farqiga aasaasiga ah ee u dhexeeya iyada iyo sahayda toosan ee laydhka ah ayaa ah in transformer-ka wareeggu aanu shaqayn inta jeer ee uu shaqaynayo balse dhawr iyo toban kilohertz ilaa dhowr megahertz.Tuubbada korantadu kuma shaqeyso aagga toosan, laakiin waxay ku jirtaa aagga saturation iyo goynta, ie gobolka beddelka;nooca beddelka korontada ee DC nidaamsan ayaa sidaas loo magacaabay.
2. Baaxadda codsiga korontada toosan
Sahayda korantada ee toosan ayaa inta badan loo adeegsadaa codsiyada korantada yar, sida LDOs waxay u baahan yihiin inay la kulmaan faraqa danab gaar ah.Heerka xakamaynta korantada wax soo saarka iyo qulqulka ayaa ka sii wanaagsan, hufnaantu waa ka hooseeyaa, baahida qaybaha durugsan waa yar tahay, kharashkuna waa yar yahay.Wareeggu waa mid fudud.
Ku saabsan Badeecada
LMR14030 waa 40 V.Iyada oo leh kala duwanaansho ballaadhan oo ka bilaabma 4 V ilaa 40 V, waxay ku habboon tahay codsiyada kala duwan ee warshadaha ilaa baabuurta qaboojinta korantada ee ilaha aan sharciga ahayn.Xakamaynta xajinta hadda waa 40 µA qaabka hurdada, kaas oo ku habboon nidaamyada ku shaqeeya baytariyada.1 µA aadka u hooseeya ee hadda ku jira qaabka xidhitaanka ayaa sii dheerayn kara nolosha batteriga.Kala duwanaanta soo noqnoqoshada beddelka ee ballaaran ee la isku hagaajin karo waxay u oggolaaneysaa waxtarka ama cabbirka ka kooban dibadda in la hagaajiyo.Magdhawga wareegga gudaha macneheedu waa in isticmaaluhu uu xor ka yahay hawsha caajiska ah ee naqshadaynta magdhowga loop.Tani waxay sidoo kale yaraynaysaa qaybaha dibadda ee qalabka.Xaqiijinta awood gelinta waxay ogolaataa fududaynta xakamaynta nidaamiyaha iyo isku xigxiga awooda nidaamka.Qalabku waxa kale oo uu leeyahay sifooyin ilaalin ku dhex dhisan sida meerta-wareeg xadka hadda jira, dareemaha kulaylka iyo xidhitaanka koronto xad dhaaf ah awgeed, iyo soosaarka ilaalinta xad-dhaafka ah.
