LP87524BRNFRQ1 VQFN-HR26 Qaybaha Asalka Cusub ee Isku-dhafka ah ee Wareegga Chip IC LP87524BRNFRQ1
Sifooyinka Alaabta
NOOCA | SHARAXA |
Qaybta | Wareegyada isku dhafan (ICs) |
Mfr | Qalabka Texas |
Taxane | Gawaarida, AEC-Q100 |
Xidhmada | Cajalad & Gariir (TR) Jaran Cajalad (CT) Digi-Reel® |
SPQ | 3000 T&R |
Xaaladda Alaabta | Firfircoon |
Shaqada | Hoos-u-dhac |
Habaynta wax soo saarka | Wanagsan |
Topology | Buck |
Nooca wax soo saarka | Programmeable |
Tirada Waxsoosaarka | 4 |
Voltage - Gelida (min) | 2.8V |
Voltage - Gelida (Max) | 5.5V |
Voltage - Soo-saarka | 0.6V |
Voltage - Wax soo saarka (Max) | 3.36V |
Hadda - Wax-soo-saarka | 4A |
Soo noqnoqda - Beddelka | 4MHz |
Dib-u-habayn isku xidhan | Haa |
Heerkulka shaqada | -40°C ~ 125°C (TA) |
Nooca Koritaanka | Dusha sare, garab qoyan |
Xidhmada / Kiis | 26-PowerVFQFN |
Xidhmada Aaladda Bixiyaha | 26-VQFN-HR (4.5x4) |
Lambarka Alaabta Saldhigga | LP87524 |
1.
Shaqada beddelka
Beddeliyuhu waa aalad u beddesha calaamadda calaamad kale.Ishaalku waa qaab ama gudbiyaha macluumaadka jira, iyo qalabka si toos ah loogu isticmaalo qalabka iyo hababka xakamaynta tooska ah, signalka waxaa badanaa loo beddelaa calaamad kale oo la barbar dhigo heerka ama tirada tixraaca si loogu xiro labada nooc ee qalabaynta, markaa beddeleyaashu inta badan waa isku xirka dhexe ee u dhexeeya laba qalab (ama aaladaha).
2.
Sida loo iibsado beddelayaasha shaqada
Beddelka buck waa awood koronto oo hab-isbedel ah, waa nooc ka mid ah aaladaha ka kooban furaha (sida caadiga ah MOSFET) si dhaqso loogu damiyo wareegga iyo daminta, beddelashadan degdegga ah waxay soo saartaa mowjad labajibbaaran, haddii wareegga shaqada ee furaha lagu dejiyo 50%, tusaale ahaan daaruhu waa 50% wakhtiga, celceliska danabku wuxuu noqon doonaa 50% gelinta.
Mawjadda labajibbaaran waxay u baahan tahay in la simo si ay u bixiso awood faa'iido leh oo inta badan inductors iyo capacitors ayaa loo isticmaalaa si taxane ah si loo gaaro shaqadan.Isku dhafkan waxaa loo yaqaannaa shaandhada hoose ee LC, halkaas oo sifooyinka inductor-ka ay simeeyaan hadda iyo capacitor-ka ayaa iska caabiya isbeddellada degdegga ah ee danabka.Saamaynta isku dhafan waxay soo saartaa wax-soo-saarka danab yar oo siman oo leh doog hooseeya.Tusaale ahaan, haddii korantada wax soo saarku ay tahay 10V oo daaruhu uu isticmaalo wareegga shaqada ee 50%, tamarta wax soo saarku waxay noqon doontaa 5V.
Qayb kale oo lagama maarmaan ah oo ka mid ah beddelaha buck-ga waa diode ama furaha kale ee ku xiran isbarbardhigga inductor.Tani waa in la magdhabo shaqada inductor, halkaas oo hadda ku jira inductor aan la bedeli karin isla markiiba, ka ilaalinta tuubooyinka wareejinta dhaawaca si xad dhaaf ah.
Beddelaha bakhaarku waxa kale oo uu ka kooban yahay wareegyo dheeraad ah si loo hubiyo koronto wax soo saar oo deggan.Beddeliyuhu waxa uu isticmaalaa nidaam kontorool xidhan oo leh jawaab celin taban si uu ula socdo wax soo saarka danabka oo uu si firfircoon u hagaajiyo wareegga waajibaadka furayaasha si uu u habeeyo tamarta wax soo saarka.
3.
Tixgelinta naqshadeynta beddelayaasha buckka
Beddelayaasha buck waa kuwo aad waxtar u leh, iyadoo aaladaha qaar ay gaareen waxtarka in ka badan 95%.
Beddelayaasha buckka ayaa ka kharash-badan maamulayaasha tooska ah ee heerarka awooda sare leh, halkaas oo qiimaha qaboojinta ee hagaha toosan laga yaabo in uu ka yaraado kharashka isticmaalka beddelaha buck
wax-soo-saarka beddelka buck-ku waxa uu ka kooban yahay buuq, taas oo macnaheedu yahay in wax-soo-saarka nidaamiyaha toosan uu yahay mid deggan oo ku habboon codsiyada u baahan sawaxanka wax-soo-saarka hooseeya.
Nidaamiyeyaasha toosan ayaa si degdeg ah uga jawaabi kara isbeddellada wax-gelinta iyo soo-saarka marka la barbar dhigo beddelayaasha lacagta.