Qaybaha LM46001AQPWPRQ1 HTSSOP Qaybaha Cusub & Asalka Isku-dhafan ee Wareegga IC Chips Electronics
Sifooyinka Alaabta
| NOOCA | SHARAXA |
| Qaybta | Wareegyada isku dhafan (ICs) PMIC - Xakamaynta korantada - Xakamaynta beddelka DC DC |
| Mfr | Qalabka Texas |
| Taxane | Automotive, AEC-Q100, SIMPLE SWITCHER® |
| Xidhmada | Cajalad & Gariir (TR) Jaran Cajalad (CT) Digi-Reel® |
| SPQ | 250T&R |
| 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) | 3.5V |
| Voltage - Gelida (Max) | 60V |
| Voltage - Soo-saarka | 1V |
| Voltage - Wax soo saarka (Max) | 28V |
| Hadda - Wax-soo-saarka | 1A |
| Soo noqnoqda - Beddelka | 200kHz ~ 2.2MHz |
| Dib-u-habayn isku xidhan | Haa |
| Heerkulka shaqada | -40°C ~ 125°C (TJ) |
| Nooca Koritaanka | Dusha sare |
| Xidhmada / Kiis | 16-TSSOP (0.173 ", 4.40mm ballac) suuf qaawan |
| Xidhmada Aaladda Bixiyaha | 16-HTSSOP |
| Lambarka Alaabta Saldhigga | LM46001 |
Faa'iidooyinka
Isbarbardhigga faa'iidooyinka furayaasha isku dhafan iyo furayaasha dibadda ee beddelayaasha lacagta
1. Shixnadaha isku dhafan ee dibadda ka soo horjeeda.
Waxa jira dhawr shido oo isku xidhan iyo furayaal dibadda ah oo ku jira xalalka beddelaha buck-ka, kan dambe oo inta badan loo yaqaanno hoos-u-socod ama kontaroolayaasha buck-ka.Labadan nooc ee dawiishku waxay leeyihiin faa'iidooyin iyo faa'iido darrooyin kala duwan sidaas darteed doorashada dhexdooda waa in la sameeyaa iyada oo la tixgelinayo faa'iidooyinka iyo khasaarooyinka ay kala leeyihiin.
Qaar badan oo ka mid ah furayaasha isku dhafan ayaa faa'iido u leh in ay leeyihiin tiro yar oo qayb ah, faa'iido u oggolaanaysa kuwan in ay leeyihiin cabbir yar oo loo isticmaalo codsiyo badan oo hooseeya.Dabeecada isku dhafan awgeed, dhamaantood waxay soo bandhigaan waxqabadka EMI wanaagsan iyadoo laga ilaalinayo heerkulka sare ama saameynaha kale ee dibadda ee dhici kara.Si kastaba ha ahaatee, waxay sidoo kale leeyihiin faa'iido darrooyinka xadka hadda iyo kulaylka;halka furayaasha dibeddu ay bixiyaan dabacsanaan weyn, iyada oo awoodda maaraynta hadda ay xaddidan tahay oo keliya doorashada FET-yada dibadda.Dhanka taban, dareemada dibadda waxay u baahan yihiin qaybo badan waana in laga ilaaliyaa dhibaatooyinka iman kara.
Si loo xakameeyo qulqulka sare, furayaasha sidoo kale waa inay noqdaan kuwo weyn, taas oo ka dhigaysa isdhexgalka mid qaali ah maadaama ay qaadato meel qiimo badan oo jajab ah oo u baahan xirmo weyn.Isticmaalka korontadu sidoo kale waa caqabad.Sidaa darteed, waxaan ku soo gabagabeyn karnaa in xawaaraha wax soo saarka sare (badanaa ka sarreeya 5A), furayaasha dibadda ayaa ah doorashada la door bidayo.
2. Sixitaan la mid ah oo ka soo horjeeda asynchronous
Beddelaha toosiye ee asynchronous ama non-synchronous rectifier buck ah oo leh hal bedel oo kaliya waxa uu u baahan yahay diode joogto ah oo wadada hoose ah, halka bedelaha dib u hagaajinta ee laba furaha leh dareemaha labaad waxa uu bedelayaa diode-sii wad ee kor ku xusan.Marka la barbar dhigo xalalka isku midka ah, hagaajinta asynchronous waxay leeyihiin faa'iidada bixinta xal ka jaban, laakiin waxtarkoodu aad uma sarreeyo.
Isticmaalka toosiyaha toosiyaha ah ee isku midka ah iyo isku xirka diode Schottky dibadda ah oo la mid ah beddelka heerka hoose ayaa siin doona waxtarka ugu sarreeya.Kakanaanta sare ee wareejintan heerka hoose waxay kordhisaa waxtarka sababtoo ah joogitaanka hoos u dhaca tamarta hoose ee gobolka "on" marka la barbar dhigo diode Schottky.Inta lagu jiro wakhtiga xidhitaanka (marka labada shiduhu ay dansan yihiin), diode ee Schottky diode ayaa leh waxqabad hoos u dhac ku yimid marka la barbar dhigo diode albaabka dambe ee gudaha FET.
3. Magta gudaha vs dibadda
Guud ahaan, kontaroolayaasha buckka ee leh furayaasha dibadda waxay bixin karaan magdhow dibadeed maadaama ay ku habboon yihiin codsiyo kala duwan.Magdhawga dibadda waxa uu caawiyaa in uu la qabsado loop-ka xakamaynta qaybaha kala duwan ee dibadda sida FET-yada, inductors, iyo capacitors-ka wax soo saarka.
Beddelayaasha leh furayaasha isku dhafan, labadaba magdhowga dibadda iyo gudaha ayaa sida caadiga ah loo isticmaalaa.Magdhawga gudeedku waxa uu sahlayaa in aad dhaqsaha badan u socoto wareegyada ansixinta habka iyo cabbirada xalinta PCB yar.
Faa'iidooyinka magdhowga gudaha waxaa lagu soo koobi karaa sahlan isticmaalka (sida kaliya ee shaandhada wax soo saarka ayaa loo baahan yahay in la habeeyo), naqshad degdeg ah, iyo tiro yar oo qaybo ah, sidaas darteed bixinta xal yar oo yar oo loogu talagalay codsiyada hadda jira.Khasaarooyinku waa inay yar yihiin dabacsanaan iyo shaandhada wax soo saarka waa inay hoos timaadaa magdhowga gudaha.Magdhawga dibadda ayaa bixiya dabacsanaan weyn waxaana lagu hagaajin karaa iyadoo loo eegayo shaandhada wax soo saarka ee la doortay, halka magdhowgu uu noqon karo xal yar oo loogu talagalay qulqulka waaweyn, laakiin codsigani wuu ka sii adag yahay.
4. Xakamaynta qaabka hadda iyo kontoroolka qaabka tamarta
Maamulaha laftiisa waxaa lagu xakameyn karaa qaabka danabka ama qaabka hadda jira.Xakamaynta qaabka korantada, korantada wax soo saarku waxay bixisaa jawaab celinta asaasiga ah ee wareegga xakamaynta, iyo magdhowga gudbinta waxaa badanaa lagu fuliyaa iyadoo la adeegsanayo korantada wax-gelinta sida wareegga labaad ee kantaroolka si kor loogu qaado habdhaqanka jawaabta ku-meel-gaarka ah;Xakamaynta qaabka hadda jirta, wakhtigan xaadirka ah wuxuu bixiyaa jawaab celin aasaasiga ah ee loop-ka kantaroolka.Iyada oo ku xidhan wareegga xakamaynta, haddani waxa uu noqon karaa hadda wax-gelinta, hadda inductor-ka, ama hadda wax-soo-saarka.Wareegga kontoroolka labaad waa danabka wax soo saarka.
Xakamaynta qaabka hadda jirta waxay faa'iido u leedahay bixinta jawaab celin degdeg ah oo jawaab celin ah, laakiin waxay u baahan tahay magdhow jiidhay, beddelidda shaandhaynta dhawaaqa cabbirka hadda, iyo khasaaraha awoodda ee wareegga ogaanshaha hadda.Xakamaynta qaabka korantada uma baahna magdhow jiirar ah oo waxay siisaa jawaab celin degdeg ah oo jawaab celin ah oo leh magdhowga gudbinta, in kasta oo jawaabta ku meel gaadhka ah lagu taliyey halkan si loo wanaajiyo waxqabadka, wareegtada kordhinta khaladku waxay u baahan kartaa xajmi sare.
Qaabka hadda jira iyo qaabka korantada labadaba waxay ku habboon yihiin hagaajinta si loogu isticmaalo codsiyada badankooda.Xaalado badan, qaabka kontoroolka qaabka hadda jira wuxuu u baahan yahay caabiyaha ogaanshaha loop-ka ee dheeraadka ah;Qaababka korantada ee leh magdhow-gudbin-ku-dhejin isku-dhafan waxay gaadhaan ku dhawaad jawaab-celin-celin-celin-celin oo isku mid ah oo uma baahna caabiyaha ogaanshaha wareegga hadda.Intaa waxaa dheer, magdhow-u-hor-u-marinta ayaa fududeynaya naqshadeynta magdhowga.Horumarro badan oo hal-weji ah ayaa la xaqiiqsaday iyadoo la isticmaalayo qaabka korantada ee dusha sare.
5. Shisheeyaha, MOSFETs iyo MOSFETs
Furayaasha maanta la isticmaalo ayaa ah MOSFET-yada la xoojiyey waxaana jira beddeleyaal badan oo hoos-u-socod/hoos u-socod iyo kontaroolayaal adeegsada MOSFET-yada iyo wadayaasha PMOSFET.MOSFET-yadu caadi ahaan waxay bixiyaan waxqabad ka qiimo jaban MOSFET-yada iyo wareegga darawalka ee qalabkani waa ka adag yahay.Si aad NMOSFET u shido ama u damiso, danab albaabka ka sarreeya oo ka badan tamarta gelinta qalabka ayaa loo baahan yahay.Tignoolajiyada sida bootstrapping ama bambooyinka dallacadu waa in la isku daro, kordhinta qiimaha iyo yaraynta faa'iidada kharashka bilowga ah ee MOSFETs.
Ku saabsan Badeecada
Xakamaynta LM46001-Q1 waa mid sahlan oo la istcimaali karo isku-dhafan oo hoos-u-dhac DC-DC ah oo awood u leh inuu kaxeeyo illaa 1 A ee culeyska hadda jira ee korantada wax-gelinta ee u dhexeysa 3.5 V ilaa 60 V. LM46001-Q1 wuxuu bixiyaa hufnaan gaar ah, saxnaanta wax-soo-saarka iyo danab-ka-baxa ee cabbirka xalka aad u yar.Qoyska la fidiyey ayaa lagu heli karaa 0.5-A iyo 2-A rarka hadda jira ee xirmooyinka ku habboon pin-to-pin.Xakamaynta qaabka hadda ugu sarreysa ayaa loo shaqeeyaa si loo gaaro gunnada loop-ka kantaroolka fudud iyo xaddididda meerto- wareeg ah.Astaamaha ikhtiyaariga ah sida inta jeer ee beddelka barnaamijka, isku-dubbaridka, calan-koronto-wanaagsan, karti-siinta saxda ah, bilawga jilicsan ee gudaha, bilawga jilicsan ee la fidin karo, iyo dabagalka ayaa bixiya madal dabacsan oo sahlan in la isticmaalo oo loogu talagalay codsiyo kala duwan.Qabashada joogtada ah ee joogtada ah iyo dhimista soo noqnoqoshada tooska ah ee culeysyada iftiinka waxay hagaajiyaan waxtarka culeyska fudud.Qoysku waxay u baahan yihiin qaybo yar oo dibadda ah iyo habaynta biinanka waxay u oggolaanaysaa qaabaynta PCB fudud, ugu wanaagsan.Astaamaha ilaalinta waxaa ka mid ah xiritaanka kulaylka, qufulka korantada ee VCC, xadka hadda jira-wareeg-wareeg, iyo soo saarida ilaalinta gaaban ee wareegga.Qalabka LM46001-Q1 waxaa laga heli karaa xirmada 16-pin HTSSOP (PWP) (6.6 mm × 5.1 mm × 1.2 mm) oo leh 0.65-mm garoonka rasaasta.Qalabku waa pin-to-pin oo ku habboon qoysaska LM4360x iyo LM4600x.Nooca LM46001A-Q1 waxaa loo habeeyay hawlgalka PFM waxaana lagu taliyay naqshado cusub.
