Nrog rau kev txhim kho ntawm USB cov qauv, tsis tsuas yog muaj cov ntaub ntawv hloov pauv ceev tau txhim kho, tab sis nws lub zog muaj peev xwm kuj tau txhim kho zoo heev. Muaj qhov sib txawv tseem ceeb hauv cov zis hluav taws xob, theem hluav taws xob, thiab kev ua haujlwm ntse them nyiaj ntawm cov qauv sib txawv ntawm USB interfaces thiab cov txheej txheem siv hluav taws xob cuam tshuam. Tsab ntawv xov xwm no yuav muab ib qho hauv - tsom xam qhov tob ntawm ntau pawg USB loj thiab lawv cov txheej txheem muab hluav taws xob.
Ib USB 2.0
1. Cov khoom siv hluav taws xob zoo li qub: USB 2.0 chaw nres nkoj muab 5V / 500mA (2.5W) lub zog, tsim nyog rau cov khoom siv hluav taws xob qis xws li keyboards, nas, thiab lwm yam.
2. BC 1.2 (Battery Charging Specification 1.2): Taw qhia txog Dedicated Charging Port (DCP) uas tuaj yeem muab tau txog 5V/1.5A (7.5W) ntawm lub zog. Txhawb ntau hom kev them nqi, suav nrog Standard Downstream Port (SDP) thiab Them Nqi Downstream Port (CDP), txhim kho kev them nqi ntawm cov khoom siv nqa tau.
2 USB 3.x
1. Kev txhim kho fais fab tuag: USB 3.0 thiab USB 3.1 default rau 5V/900mA (4.5W) fais fab mov, thaum USB 3.2 tseem siv tus qauv no.
2. Fais fab xa tuaj (PD): Txawm hais tias USB 3. x nws tus kheej tsis hloov cov khoom siv hluav taws xob yooj yim, nws tau sib xws nrog USB PD raws tu qauv, tso cai rau kev xa hluav taws xob ntau dua.
3 USB Fais fab xa tuaj (PD)
Los ntawm USB PD 1.0 mus rau qhov tseeb USB PD 3.2, txhua qhov tshiab tau ntxiv cov yam ntxwv ntxiv thiab muaj zog dua.
Nta muaj xws li configurable fais fab mov, kev them nyiaj yug rau bidirectional fais fab mov, uas txhais tau hais tias lub cuab yeej ua hauj lwm raws li ib tug ob qho tib si lub hwj chim qhov chaw thiab lub hwj chim txais; Thiab qhov voltage thiab tam sim no muab tuaj yeem hloov kho raws li xav tau. Ntau theem fais fab: Thaum pib, USB PD 2.0 txhawb ntau qhov ruaj khov voltage xws li 5V / 3A (15W) txog 20V / 5A (100W); USB PD 3.0 qhia txog Programmable Power Supply (PPS), uas tso cai rau kev hloov kho qhov tseeb ntawm qhov hluav taws xob thiab tam sim no, ua kom zoo dua qhov kev them nqi ceev. Ua nyob rau hauv ntau yam kev tiv thaiv mechanisms kom ntseeg tau tias cov khoom siv txuas nrog tsis puas thaum siv; Tib lub sijhawm tswj kev rov qab zoo sib xws, txawm tias qhov tseeb PD cov lus qhia tuaj yeem ua haujlwm zoo nrog cov khoom siv USB qub.
4 USB Hom-C
USB hom-C yog hom tshiab ntawm daim ntawv interface nrog rau pem hauv ntej thiab rov qab ntsaws- hauv kev tsim, thiab tus pin sab hauv layout tso cai rau ntau txoj hauv kev xa hluav taws xob.
Thaum ua ke nrog USB PD raws tu qauv, Hom -C chaw nres nkoj tuaj yeem ua tiav lub zog tso tawm mus txog 240W (USB PD 3.1 EPR Extended Power Range), deb tshaj qhov muaj peev xwm ntawm cov chaw nres nkoj USB A / B ib txwm muaj. Vim nws qhov kev ua tau zoo thiab kev hloov pauv tau zoo, Hom -C tau dhau los ua qhov kev nyiam tshaj plaws rau cov laptops niaj hnub, smartphones, thiab lwm yam khoom siv hluav taws xob.
