LM46001AQPWPRQ1 HTSSOP Zvikamu Zvitsva & Zvekutanga Zvakaedzwa Yakabatanidzwa Dunhu IC Chips Electronics.
Product Attributes
| TYPE | DESCRIPTION |
| Category | Integrated Circuits (ICs) PMIC - Voltage Regulators - DC DC Switching Regulators |
| Mfr | Texas Instruments |
| Series | Motokari, AEC-Q100, SIMPLE SWITCHER® |
| Package | Tepi & Reel (TR) Cheka Tape (CT) Digi-Reel® |
| SPQ | 250T&R |
| Product Status | Active |
| Basa | Nhanho-Pasi |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Nhamba Yezvinobuda | 1 |
| Voltage - Input (Mini) | 3.5V |
| Voltage - Input (Max) | 60V |
| Voltage - Kubuda (Mini/Yakagadziriswa) | 1V |
| Voltage - Kubuda (Max) | 28V |
| Zvazvino - Output | 1A |
| Frequency - Kuchinja | 200kHz ~ 2.2MHz |
| Synchronous Rectifier | Ehe |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Nyaya | 16-TSSOP (0.173", 4.40mm Upamhi) |
| Supplier Device Package | 16-HTSSOP |
| Base Product Number | LM46001 |
Zvakanakira
Kuenzanisa kwezvakanakira zveakasanganiswa switch uye ekunze switch kune buck converters
1. Kunze kunopesana nemagetsi akabatanidzwa.
Kune akati wandei akabatanidzwa switch uye ekunze switch mune buck converter mhinduro, iyo yekupedzisira inowanzonzi nhanho-pasi kana buck controllers.Aya marudzi maviri ekuchinja ane akasiyana mabhenefiti uye neakaipa uye saka sarudzo pakati pawo inofanirwa kuitwa neyakasiyana mabhenefiti uye yakashata mupfungwa.
Mazhinji maswiti akabatanidzwa ane mukana wekuve neakaderera chikamu chechikamu, mukana unobvumira idzi switch kuti dzive nehukuru diki uye kushandiswa mune dzakawanda dzakaderera-ikozvino zvikumbiro.Nekuda kwehunhu hwavo hwakabatana, vese vanoratidza kuita kwakanaka kweEMI uku vachidzivirirwa kubva kune tembiricha yepamusoro kana zvimwe zvinofurira kunze zvinogona kuitika.Zvisinei, ivo vanewo zvisingabatsiri zvezvino uye zvinopisa miganhu;nepo machinjiro ekunze achipa kuchinjika kukuru, neazvino kubata kugona kunogumira nesarudzo yekunze maFET.Padivi rakashata, kushandura kwekunze kunoda zvimwe zvikamu uye kunofanirwa kuchengetedzwa kubva kumatambudziko anogona kuitika.
Kubata makwikwi akakwira, ma switch anofanirwawo kunge akakura, izvo zvinoita kuti kusanganisa kudhure sezvo zvichitora nzvimbo yakakosha pane chip uye inoda pasuru yakakura.Kushandiswa kwemagetsi kunonetsawo.Naizvozvo, tinogona kugumisa kuti kune yakakwira kubuda mafungu (kazhinji pamusoro pe5A), ekunze switch ndiyo inosarudzwa sarudzo.
2. Synchronous maringe neasynchronous rectification
Asynchronous kana isiri-synchronous rectifier buck converter ine switch imwe chete inoda kuenderera mberi diode munzira yakaderera, nepo musynchronous rectifier buck converter ine maviri switch switch yechipiri inotsiva yataurwa pamusoro pekuenderera mberi diode.Kuenzaniswa nemhinduro dze synchronous, asynchronous rectifiers vane mukana wekupa mhinduro yakachipa, asi kugona kwavo hakuna kunyanya kukwirira.
Kushandisa synchronous rectifier topology uye kubatanidza yekunze Schottky diode inoenderana neiyo yakaderera-level switch kunopa hunyanzvi hwepamusoro.Iyo yakakwirira yakaoma yeiyi yakaderera-level switch inowedzera kushanda zvakanaka nekuda kwekuvapo kwekuderera kwemagetsi kudonha mu "on" mamiriro kana ichienzaniswa neiyo Schottky diode.Munguva yenguva yekudyira (kana ma switch ese akadzimwa), yekunze Schottky diode ine yakaderera yekudonha kuita kana ichienzaniswa neyemukati kumashure gedhi diode yeFET.
3. Kunze vs. muripo wemukati
Kazhinji, mabhagi ekudzora ane ekunze switch anogona kupa muripo wekunze sezvo akakodzera kune akasiyana maapplication.Muripo wekunze unobatsira kugadzirisa loop yekudzora kune akasiyana ekunze maficha akadai seFET, inductors, uye anobuda capacitors.
Kune vashanduri vane ma switch akabatanidzwa, zvese zvekunze uye zvemukati muripo zvinowanzo shandiswa.Muripo wemukati unogonesa kukurumidza kukurumidza kugadzirisa masisitimu uye madiki PCB mhinduro saizi.
Zvakanakira muripo wemukati zvinogona kupfupikiswa sekureruka kwekushandisa (sezvo chete inobuda sefa inoda kugadziridzwa), nekukurumidza dhizaini, uye nenhamba shoma yezvikamu, nekudaro ichipa diki-saizi mhinduro kune yakaderera ikozvino maapplication.Izvo zvisingabatsiri ndezvekuti hazvinyanyi kushanduka uye inobuda sefa inofanirwa kuve pasi pemuripo wemukati.Muripo wekunze unopa kuchinjika kukuru uye unogona kugadziridzwa zvichienderana neyakasarudzwa inobuda sefa, nepo muripo wacho uchigona kuita diki mhinduro kune makuru mafungu, asi iyi application yakanyanya kuoma.
4. Ikozvino-mode control inopesana ne-voltage-mode control
Iyo regulator pachayo inogona kudzorwa mune chero voltage mode kana ikozvino modhi.Mune voltage mode control, iyo inobuda voltage inopa yekutanga mhinduro kune yekudzora loop, uye feedforward muripo unowanzo itwa nekushandisa yekupinda voltage seyechipiri yekudzora loop kuti uwedzere hunhu hwekupindura kwenguva pfupi;mune yazvino modhi control, yazvino inopa yekutanga mhinduro kune control loop.Zvichienderana nekutonga loop, iyi yazvino inogona kunge iri yekupinza ikozvino, inductor ikozvino, kana inobuda ikozvino.Iyo yechipiri control loop ndiyo inobuda voltage.
Ikozvino modhi yekudzora ine mukana wekupa nekukurumidza mhinduro loop mhinduro, asi inoda muripo wemateru, kushandura ruzha kusefa kune kuyerwa kwazvino, uye kurasikirwa kwemagetsi mune yazvino yekuona loop.Voltage modhi yekudzora haidi muripo wekutsvedza uye inopa inokurumidza mhinduro loop mhinduro ine feedforward muripo, kunyangwe mhinduro yechinguvana ichikurudzirwa pano kuti iwedzere kuita, dunhu rekusimudzira kukanganisa rinogona kuda yakakwira bandwidth.
Ese ari maviri azvino uye voltage mode control topology akakodzera kuti tuning ishandiswe mune akawanda maapplication.Muzviitiko zvakawanda, ikozvino-modhi yekudzora topologies inoda imwe yazvino loop yekuona resistor;voltage-modhi topologies ine yakasanganiswa feed-mberi muripo inowana yakada kufanana mhinduro loop mhinduro uye haidi yazvino loop yekuona resistor.Pamusoro pezvo, muripo wekupa-mberi unorerutsa dhizaini yemuripo.Mazhinji e-single-phase budiriro akaonekwa uchishandisa voltage-modhi yekudzora topology.
5. Kuchinja, MOSFETs uye MOSFETs
Iwo maswichi mukushandiswa kwakajairwa nhasi anonatsiridzwa MOSFET uye kune akawanda nhanho-pasi/nhanho-pasi anoshandura uye vatongi vanoshandisa MOSFETs uye PMOSFET vatyairi.MaMOSFET anowanzo kupa kuita-inodhura-inoshanda kupfuura maMOSFET uye mutyairi wedunhu pamudziyo uyu akanyanya kuoma.Kuti uchibatidze nekudzima NMOSFET, inodiwa gedhi repamusoro pane voltage yekupinza yemudziyo.Tekinoroji senge bootstrapping kana mapombi ekuchaja anofanirwa kubatanidzwa, kuwedzera mutengo uye kuderedza mukana wekutanga mutengo weMOSFET.
About Product
Iyo LM46001-Q1 regulator iri nyore kushandisa synchronous step-down DC-DC converter inokwanisa kutyaira inosvika 1 A yemutoro wezvino kubva pakuisa voltage kubva pa3.5 V kusvika 60 V. Iyo LM46001-Q1 inopa kusarudzika, kubuda kwechokwadi uye kudonhedza-kunze voltage mune diki mhinduro saizi.Mhuri yakawedzera inowanikwa mu 0.5-A uye 2-A mitoro yazvino sarudzo mumapini-kupini anoenderana mapakeji.Peak ikozvino modhi yekudzora inoshandiswa kuwana yakapusa yekudzora loop muripo uye kutenderera-ne-kutenderera ikozvino kudzikisira.Optional features senge programmable switching frequency, kuwiriranisa, simba-yakanaka mureza, kunyatso gonesa, yemukati yakapfava kutanga, inotambanudzwa yakapfava kutanga, uye yekutevera inopa inochinjika uye nyore-kushandisa-puratifomu yeakasiyana maapplication.Discontinuous conduction uye otomatiki frequency kudzikisira pamitoro yakareruka inovandudza kuremerwa kwechiedza.Mhuri inoda mashoma ekunze zvikamu uye gadziriro yepini inobvumira yakapusa, yakakwana PCB dhizaini.Dziviriro maficha anosanganisira kupisa kuvharika, VCC undervoltage lockout, kutenderera-ne-kutenderera ikozvino muganho, uye kubuda kwepfupi-sekete dziviriro.Iyo LM46001-Q1 mudziyo unowanikwa mu16-pini HTSSOP (PWP) package (6.6 mm × 5.1 mm × 1.2 mm) ine 0.65-mm inotungamira pitch.Mudziyo uyu pini-kupini inoenderana neLM4360x uye LM4600x mhuri.Iyo LM46001A-Q1 vhezheni yakagadziridzwa kushanda kwePFM uye inokurudzirwa kune matsva magadzirirwo.
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