Asal cusub LM25118Q1MH/NOPB Isku-dhafan Wareegga IC REG CTRLR BUCK 20TSSOP Ic Chip LM25118Q1MH/NOPB
Sifooyinka Alaabta
NOOCA | SHARAXA |
Qaybta | Wareegyada isku dhafan (ICs) |
Mfr | Qalabka Texas |
Taxane | Gawaarida, AEC-Q100 |
Xidhmada | Tube |
SPQ | 73 Tube |
Xaaladda Alaabta | Firfircoon |
Nooca wax soo saarka | Darawalka Transistor |
Shaqada | Kor-u-qaad, Hoos-u-dhac |
Habaynta wax soo saarka | Wanagsan |
Topology | Buck, Kobcinta |
Tirada Waxsoosaarka | 1 |
Wejiyada wax soo saarka | 1 |
Korantada - Alaabta (Vcc/Vdd) | 3V ~ 42V |
Soo noqnoqda - Beddelka | Ilaa 500kHz |
Wareegtada Waajibka (Max) | 75% |
Dib-u-habayn isku xidhan | No |
Isku xirka saacada | Haa |
Interfaces taxane ah | - |
Tilmaamaha Xakamaynta | Daar, Xakamaynta Joogtada, Ramp, Bilowga Jilicsan |
Heerkulka shaqada | -40°C ~ 125°C (TJ) |
Nooca Koritaanka | Dusha sare |
Xidhmada / Kiis | 20-PowerTSSOP (0.173, 4.40mm ballac) |
Xidhmada Aaladda Bixiyaha | 20-HTSSOP |
Lambarka Alaabta Saldhigga | LM25118 |
1. Baqdin isku xidhan
Faa'iidooyinka.
Waxtarka sare: iska caabbinta gudaha ee tuubada mos waa mid aad u yar oo hoos u dhaca korantada ee gobolka ayaa aad uga yar marka loo eego dhibcaha hore ee Cosmos ee diode Schottky.
Khasaaro.
Degenaansho aan ku filnayn: waxay u baahan tahay in la naqshadeeyo wareegga wadista, lagana fogaado tuubada sare iyo hoose isla mar ahaantaana, wareeggu aad ayuu u adag yahay, taasoo keentay xasilooni darro ku filan.
2. Lacag aan isku mid ahayn
Faa'iidooyinka.
Hufnaanta hoose: Dhibcaha danab ee Schottky diode waa weyn yahay, marka loo eego isticmaalka korantada ee ay dhaliso tuubada mos
Khasaaro.
Degenaansho sare: ma jiri doonto isku mar la isku marsiiyo tuubooyinka sare iyo kuwa hoose.
1: PFM (hab habaynta garaaca garaaca wadnaha)
Beddelka ballaca garaaca wadnaha waa la hubaa, iyadoo la beddelayo inta jeer ee wax soo saarka garaaca wadnaha, korantada wax soo saarka waa la dejiyaa.Nooca xakamaynta ayaa faa'iido u leh isticmaalka tamarta hooseeya xitaa marka la isticmaalo waqti dheer, gaar ahaan culeysyada yaryar.
2: PWM (Hadal Balaadhka garaaca wadnaha)
Nooca kontoroolka PWM waa mid aad waxtar u leh wuxuuna leeyahay koronto wax soo saar oo wanaagsan iyo buuq.
Si loo soo koobo: Guud ahaan, kala duwanaanshaha wax qabad ee u dhexeeya beddelayaasha DC-DC oo leh laba hab oo kala duwanaansho ah, PFM iyo PWM, waa sida soo socota.
Inta jeer ee PWM, Habka xulashada wareegga waajibaadka PFM.PWM/PFM nooca beddelka PFM ee culeysyada yaryar iyo u beddelka tooska ah ee PWM ee culeyska culus.
3.
Waa maxay faraqa u dhexeeya kor u kicinta ICs iyo kor u qaadida asynchronous ICs?
Farqiga ugu weyn ee u dhexeeya kor u qaadida ICs iyo kor u qaadista asynchronous waa farqiga hababka hagaajinta.
Kobcinta isku dhafka ah ee wareegga IC waxay isticmaashaa MOS sababtoo ah tuubooyinka MOS waxay leeyihiin iska caabin gudaha ah oo aad u hooseeya ee gobolka furan iyo khasaaraha habka hagaajinta ayaa ah mid aad u hooseeya, markaa waxtarka kor u kaca isku midka ah ayaa sarreeya iyo kuleylku waa hooseeyaa.Waxaa loo isticmaali karaa codsiyada kor u qaadista awoodda sare.
Kordhinta asynchronous IC wareegyada waxay isticmaalaan diodes si loo saxo.Diodes-ku waxay leeyihiin hoos u dhaca korantada ee habka hagaajinta.Mar kasta oo uu sareeyo heerka hadda ee habka hagaajinta, waa sii badanayaa khasaaraha.Sida caadiga ah, awooddu ma noqon karto awood sare.