I-Integrated Circuit IC Electronics Components Umphakeli Okusha Nokwangempela Kwesevisi Ye-Bom Yamanani Entengo Esihle
Izimfanelo Zomkhiqizo
| UHLOBO | DESCRIPTION |
| Isigaba | Izifunda Ezihlanganisiwe (ICs) PMIC - Voltage Regulators - DC DC Ukushintsha Regulators |
| Mfr | Texas Instruments |
| Uchungechunge | SIMPLE SWITCHER® |
| Iphakheji | I-Tape & Reel (TR) Cut Tape (CT) I-Digi-Reel® |
| SPQ | 75Tube |
| Isimo somkhiqizo | Iyasebenza |
| Umsebenzi | Isinyathelo-Phansi |
| Ukucushwa Kokukhiphayo | Okuhle |
| I-Topology | Buck |
| Uhlobo Lokukhiphayo | Kuyalungiseka |
| Inombolo Yemiphumela | 1 |
| I-Voltage - Okokufaka (Okuncane) | 4.3V |
| I-Voltage - Okokufaka (Ubukhulu) | 60V |
| I-Voltage - Okukhiphayo (Okuncane/Okulungisiwe) | 0.8V |
| I-Voltage - Okukhiphayo (Ubukhulu) | 50V |
| Okwamanje - Okukhiphayo | 2A |
| Imvamisa - Ukushintsha | 200kHz ~ 2.5MHz |
| I-synchronous Rectifier | No |
| Izinga Lokushisa Lokusebenza | -40°C ~ 125°C (TJ) |
| Uhlobo Lokukhweza | INtaba Engaphezulu |
| Iphakheji / Ikesi | 8-PowerSOIC (0.154", 3.90mm Ububanzi) |
| Iphakheji Yedivayisi Yomhlinzeki | 8-SO I-PowerPad |
| Inombolo Yomkhiqizo Eyisisekelo | I-LMR16020 |
Yiziphi izindawo?
Iziphi izindawo ezishintshanisa amandla kagesi kanye nezamandla zomugqa ezifanele
Ukushintsha izinsiza zamandla akudingi i-transformer ukuthi iguqule amandla kalayini we-AC ngokuqondile ku-voltage ye-DC, bese iguqula leyo voltheji ye-DC eluhlaza ibe isignali ye-AC yemvamisa ephezulu ezosetshenziswa kusekethe yesilawuli ukuze kukhiqizwe i-voltage edingekayo kanye neyamanje.
Idizayini yokunikeza amandla olayini isebenzisa i-voltage yomugqa we-AC kusiguquli samandla ukuze inyuse noma yehlise i-voltage ngaphambi kokuthi isetshenziswe kumjikelezo wesilawuli.Njengoba ubukhulu be-transformer bungalingani ngokungaqondile nemvamisa yokusebenza, lokhu kungabangela ukunikezwa kwamandla amakhulu futhi asindayo.
Uhlobo ngalunye lomsebenzi wokuphakelwa kwamandla lunezinzuzo kanye nokubi.Ukunikezwa kwamandla okushintshayo kuncane futhi kulula ngamaphesenti angama-80 kunomugqa wamandla ohambisanayo, kodwa kudala umsindo wefrikhwensi ephezulu ongaphazamisa okokusebenza kwe-elekthronikhi.Ngokungafani nempahla yamandla ewumugqa, ukushintshanisa kwamandla kagesi kungamelana nokulahlekelwa kwe-AC ebangeni le-10-20 ms ngaphandle kokuthinta okukhiphayo.
Ukunikezwa kwamandla kalayini kudinga amadivaysi ama-semiconductor amakhulu ukuze alawule ugesi ophumayo futhi ngenxa yalokho akhiqize ukushisa okwengeziwe, okunciphisa ukusebenza kahle kwamandla.Okokukhiphayo okungu-24V, ukunikezwa kwamandla olayini ngokuvamile kusebenza kahle ngamaphesenti angu-60, uma kuqhathaniswa namaphesenti angu-80 noma ngaphezulu okunikezwa kwamandla kwemodi yokushintsha.Amandla kalayini anesikhathi sokuphendula esisheshayo esidlula ozakwabo bemodi yokushintsha, okubalulekile kwezinye izindawo ezithile.Imvamisa, amandla okunikezwa kwemodi yokushintsha alula futhi ahlangene, okuwenza alungele amadivayisi aphathekayo.Izimpahla zamandla ezilayini zifanele ukunika amandla amasekhethi e-analog ngenxa yomsindo wawo ophansi kagesi kanye nokulawula kalula.
Amaphutha ajwayelekile
Amaphutha ajwayelekile ekushintsheni izinsiza zamandla.
Iliphi iphutha elivamile ekushintsheni izinsiza zikagesi?Iphutha elivamile ekushintsheni izinsiza zamandla yi-switching transistor ngokwayo.I-transistor emfishane idala inani elikhulu lamanje ukuthi ligeleze ku-transformer futhi ivuthele i-fuse.
Ukwehluleka kwe-Transistor kuvame ukubangelwa ama-capacitor amabi.Thola i-capacitor yokuhlunga evuvukile noma evuzayo bese ubuyisela noma imaphi ama-capacitor abukeka kabi.Ukumisa lokhu kwehluleka okuvamile ukuthi kungenzeki futhi, i-capacitor yokuhlunga okukhiphayo kufanele kushintshwe i-capacitor.Iningi labakhiqizi abaphakela amandla abawafaki ama-capacitor e-ESR aphansi njengamathuluzi okuqala ngoba ayabiza kakhulu kunama-capacitor ajwayelekile.Kodwa-ke, kufanelekile ukuzisebenzisa njengezingxenye ezishintshayo njengoba zizothuthukisa kakhulu impilo yokunikezwa kwamandla.
Ukuhluleka kwe-diode kungenye inkinga evamile.Kunama-diode amaningi ekushintsheni kwamandla kagesi futhi ukuhluleka kwe-diode eyodwa kungabangela ukunikezwa kwamandla ukushaya i-fuse noma ukuvala shaqa.Ukwehluleka okuvamile kwe-diode kuwumjikelezo omfushane ku- +12 volt noma -5 volt output rectifier.Okunye kwalokhu kwehluleka kungase kubangelwe ukusetshenziswa kokuphumayo kwe-+12 noma -5 volt.I-high voltage input diode ingase ifinyezwe.
Mayelana Nomkhiqizo
I-LMR16020 iyisilawuli esingu-60 V, 2 A SIMPLE SWITCHER® esine-MOSFET ehlangene yohlangothi oluphezulu.Ngebanga elibanzi lokokufaka ukusuka ku-4.3 V ukuya ku-60 V, ilungele izinhlelo zokusebenza ezihlukahlukene kusukela ezimbonini kuya ezimotweni zokulungiswa kwamandla kusuka emithonjeni engalawulwa.Ukuthula kwesilawuli kungu-40 µA kumodi yokulala, elungele amasistimu asebenza ngebhethri.I-ultra-low 1 µA yamanje kumodi yokuvala shaqa ingaqhubeka endeze impilo yebhethri.Ibanga lefrikhwensi yokushintsha elilungisekayo elibanzi livumela ukusebenza kahle noma usayizi wengxenye yangaphandle ukuthi uthuthukiswe.Isinxephezelo seluphu yangaphakathi sisho ukuthi umsebenzisi ukhululekile emsebenzini oyisicefe wokuklama isinxephezelo seluphu.Lokhu futhi kunciphisa izingxenye zangaphandle zedivayisi.Ukunemba kokunika amandla okokufaka kuvumela ukwenziwa lula kokulawula isilawuli nokulandelana kwamandla esistimu.Idivayisi futhi inezici zokuvikela ezakhelwe ngaphakathi ezifana nomkhawulo wamanje womjikelezo nomjikelezo, inzwa yokushisa nokuvalwa ngenxa yokushabalaliswa kwamandla amaningi, nokuvikelwa kokukhishwa kwe-voltage.
I-LMR16020 itholakala kuphakeji ye-HSOIC enamaphini ayi-8 enephedi eveziwe yokumelana nokushisa okuphansi.
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