( Izingxenye ze-Electronic IC Chips Amasekhethi Ahlanganisiwe IC ) TDA21490

Izimfanelo Zomkhiqizo

Amadokhumenti Nemidiya

Izigaba Zemvelo Nokuthekelisa

Izinsiza Ezengeziwe

I-PMIC, eyaziwa nangokuthi i-IC yokuphatha amandla, iyisekethe ethile ehlanganisiwe elawula ukunikezwa kwamandla kusistimu enkulu.

Ama-Pmics avame ukusetshenziswa kumadivayisi asebenza ngebhethri, njengamaselula noma izidlali zemidiya eziphathwayo.Njengoba amadivaysi anjalo evamise ukuba namandla angaphezu kweyodwa (okufana nokunikezwa kwamandla ebhethri ne-USB), isistimu idinga ukunikezwa kwamandla kagesi amaningi ama-voltage ahlukene, futhi ukushajwa nokukhipha ibhethri kufanele kulawulwe.Ukuhlangabezana nesidingo esinjalo ngendlela evamile kuzothatha indawo enkulu futhi kwandise isikhathi sokuthuthukiswa komkhiqizo, ngaleyo ndlela ukuvela kwe-PMIC.

Umsebenzi oyinhloko we-PMIC ukulawula ukugeleza kwamandla kanye nesiqondiso sokugeleza ukuhlangabezana nezidingo zesistimu enkulu.Kusuka emithonjeni yamandla eminingi (isb., imithombo yamandla yangempela yamanje yangaphandle, amabhethri, imithombo yamandla ye-USB, njll.), khetha futhi usabalalise amandla ezingxenyeni ezihlukahlukene zesistimu enkulu ukuze zisetshenziswe, njengokuhlinzeka ngemithombo yamandla amaningi wamandla kagesi ahlukene kanye nesibopho ukushaja amabhethri angaphakathi.Ngenxa yokuthi amasistimu asetshenziswa kakhulu amandla ebhethri, aklanywe ngendlela esebenza kahle yokuguqula ukuze kuncishiswe ukulahleka kwamandla.

I-PMIC ivamise ukuba nomsebenzi ongaphezu kowodwa.Le misebenzi ihlanganisa:

Isiguquli se-Dc-dc

I-Low pressure differential regulator (LDO)

Ishaja yebhethri

Ukukhetha kokunikezwa kwamandla

Ukulawulwa kwamandla kagesi anamandla

Lawula ukulandelana kokuvula nokuvala kokunikezwa kwamandla

Ukutholwa kwe-voltage yendawo ngayinye yamandla

Ukutholwa kwezinga lokushisa

Eminye imisebenzi

Ngenxa yesidingo sokuxhumanisa nesistimu eyinhloko, izixhumanisi zesignali ezidinga ukuxhumana nesistimu eyinhloko ngokuvamile zisebenzisa izixhumanisi zochungechunge ezifana ne-I²C noma i-SPI.Enye i-PMIC enemisebenzi elula izoxhuma ngokuqondile ku-GPIO ye-MCU ngamasignali azimele.

Amanye ama-PMICS angaxhunywa kumthombo wamandla oyisipele ukuze kusetshenziswe iwashi lesikhathi sangempela, futhi amanye azoba nezinkomba ezilula zesimo samandla, njengokusebenzisa amaledi ukukhombisa ukushajwa kwebhethri nesimo sokushajwa.

Amanye ama-PMICS aklanyelwe umndeni othile we-MCUS, futhi inkampani eyenza i-MCUS ehambisanayo izoba ne-firmware etholakalayo ukuze isekele umsebenzi we-PMIC.