Umkhiqizi Ohamba phambili we-PCB kanye ne-PCBA wama-USB Expanders

Isandisi se-USB sinezela ama-port amaningi kanye nezinhlobo eziningi zama-port kukhompyutha engenazo ezanele. Ama-laptops esimanje athunyelwa ne-port eyodwa noma ezimbili ze-USB-C futhi akukho okunye — akukho USB-A, akukho HDMI, akukho Ethernet, akukho slot sekhadi le-SD. Isandisi se-USB sixazulula lokhu ngokuhlukanisa uxhumano olulodwa lwe-USB lube ama-port amaningi angezansi, ngokuvamile axuba i-USB-A, USB-C, HDMI, Ethernet, kanye nabafundi bamakhadi kudivayisi eyodwa. Lo mhlahlandlela uhlanganisa izigaba zomkhiqizo, izingxenye ezibalulekile, izinto ezicatshangelwayo zokuklama i-PCB, kanye nezidingo zokukhiqiza zehadiwe yesandisi se-USB.

Okuqukethwe

1. Lokho Okwenziwa Yi-USB Expander Empeleni
2. Izikhulisi Zezimbobo ze-USB-A: Ukwengeza Izimbobo Ze-USB Ezengeziwe
3. Izikhulisi Zemisebenzi Eminingi ze-USB-C: Ukuguqulwa Kwamachweba kanye Nezikhulisi
4. Izikhulisi ze-USB Ezisebenza Nge-USB Neziteshi Zokushaja
5. Izikhulisi ze-USB Zezimboni Nezifakiwe
6. Izinto Ezibalulekile Zokuklama i-PCB Zabathuthukisi be-USB
7. Ukukhiqiza i-USB Expander e-Highleap

1. Lokho Okwenziwa Yi-USB Expander Empeleni

Isandisi se-USB sithatha imbobo eyodwa ye-USB kukhompyutha ephethe bese siyiguqula ibe amambobo amaningi. Inguqulo elula kakhulu i-USB-A hub enamambobo amane — ikhebula elilodwa eliya kwi-PC, amambobo amane e-USB-A ezinto ezisetshenziswayo. Inguqulo ethuthuke kakhulu isiteshi sokufaka i-USB-C esinikeza izikhala ze-USB-A, USB-C, HDMI, DisplayPort, Gigabit Ethernet, umsindo, kanye namakhadi e-SD kusuka ekuxhumekeni okukodwa kwe-USB-C, kuyilapho futhi ishaja i-laptop nge-USB Power Delivery.

Izimo ezintathu ziqhuba cishe konke ukuthengiswa kwe-USB expander:

Azikho izimbobo ezanele. I-laptop enezimbobo ezimbili ze-USB-C ayikwazi ukuxhuma igundane, ikhibhodi, idrayivu yangaphandle, i-webcam, kanye neshaja yocingo ngasikhathi sinye. Isandisi se-USB sengeza izimbobo ezingekho. Lesi yisimo esivame ukusetshenziswa ngabathengi kanye nesigaba somkhiqizo onevolumu ephezulu kakhulu.

Izinhlobo zembobo ezingalungile. I-laptop ye-USB-C kuphela ayikwazi ukuxhuma ngqo izinto eziphathelene ne-USB-A, i-HDMI monitor, noma ikhebula le-Ethernet. I-expander ye-USB enezinhlobo zembobo ezixubile ivala igebe - isebenza njengesiphindaphindi sembobo kanye nesiguquli se-interface kudivayisi eyodwa.

Ubulula bedeskithophu. Umbhoshongo we-PC yedeskithophu ngaphansi kwedeski unama-port e-USB kuphaneli yangemuva okunzima ukuwafinyelela. Isandisi se-USB esisebusweni bedeski, esixhunywe kwi-PC ngekhebula elilodwa, sibeka wonke ama-port endaweni efinyeleleka kalula. Lena ingxenye enkulu yemakethe yama-desktop hub anama-port angu-4 kanye nama-port angu-7.

Enhliziyweni yesandisi ngasinye se-USB kukhona i-USB hub IC — i-chip esebenzisa ukucaciswa kwe-USB hub, ukuphatha ukubalwa, ukwabiwa kwe-bandwidth, kanye nokusatshalaliswa kwamandla kuwo wonke ama-port angezansi. Izinhlobo ezahlukene zama-port (i-HDMI, i-Ethernet, umsindo) zidinga ama-IC ebhuloho engeziwe ku-PCB efanayo. Umklamo we-PCB kanye nokukhethwa kwezingxenye kunquma ukusebenza komkhiqizo, ukuthembeka, kanye nezindleko.

2. Izikhulisi Zezimbobo ze-USB-A: Ukwengeza Izimbobo Ze-USB Ezengeziwe

Isigaba sesandisi se-USB esilula nesinomthamo ophezulu. Ikhebula le-USB elilodwa kumphathi, amachweba amaningi e-USB-A ezinto ezisetshenziswayo. Akukho ukuguqulwa kwephrothokholi — isandisi siyihabhu le-USB kuphela.

Ihabhu le-USB 3.0 elisebenzisa amachweba amane elisebenzisa ibhasi. Umkhiqizo wezinga lokuqala. I-hub IC eyodwa (VIA VL817, Genesys Logic GL3520, noma efanayo) ishayela amachweba amane e-USB-A angaphansi komfula. I-hub inamandla isho ukuthi ihabhu idonsa wonke amandla ayo echwebeni le-USB eliyibamba — akukho adaptha yangaphandle edingekayo. Ukushintshaniswa: inani lamanje elitholakalayo likhawulelwe ku-900 mA (i-USB 3.0 spec), elabiwe kuyo yonke ihabhu ephezulu kanye nawo wonke amachweba amane. Lokhu kwanele kumagundane, amakhibhodi, ama-flash drive, kanye nabafundi bamakhadi, kodwa akwanele kuma-hard drive angaphandle noma ukushaja ifoni. I-PCB: ungqimba olu-2–4, cishe u-60 × 30 mm. I-BOM ngevolumu: $3–6.

Ama-hub anamachweba angu-7 kanye namachweba angu-10. Kubasebenzisi abaxhumanisa izinto eziningi ezisetshenziswayo — abahleli bamavidiyo, abakhiqizi bomsindo, abathuthukisi abanamadivayisi amaningi okuhlola. Ukwakheka kwangaphakathi kuhlanganisa ama-IC amabili noma amathathu anamachweba angu-4. Ihlala iyazisebenzisa (i-adaptha yangaphandle) ngoba amandla ebhasi awakwazi ukuhlinzeka ngamachweba amaningi kangaka. Amaswishi kagesi ngechweba ngalinye kanye nezinkomba ze-LED yizici ezihlukanisa imikhiqizo ye-premium (i-Anker, i-Sabrent, i-UGREEN) kwezinye izindlela ezijwayelekile. I-BOM ngevolumu: $8–15.

Ama-hub e-USB 2.0 vs USB 3.0. Ama-hub e-USB 2.0 (i-bandwidth eyabiwe engu-480 Mbps) asebenzisa ama-IC alula nashibhile kanye nama-PCB anezingqimba ezimbili. Ama-hub e-USB 3.0 (5 Gbps) adinga ama-differential pairs alawulwayo, imithetho yokwakheka kwe-PCB eqinile, kanye namabhodi anezingqimba ezine. Ama-hub e-USB 3.0 nawo agcina izindlela zedatha ze-USB 2.0 ezihambisanayo emuva ngesikhathi esifanayo — i-hub IC ilawula zombili ngasikhathi sinye. Kuzinhlelo zokusebenza ezidinga kuphela amadivayisi e-HID (amakhibhodi, amagundane, izikena zebhakhodi), i-hub ye-USB 2.0 iyindlela engcono kakhulu.

I-USB-C engenhla, i-USB-A engezansi. Ingxenye yomkhiqizo ekhulayo ebhekana "nenkinga ye-dongle": i-laptop ine-USB-C kuphela, kodwa zonke izinto ezikhona zine-USB-A. Ihabhu ixhuma kwi-laptop nge-USB-C futhi iveza amachweba e-USB-A amadivayisi akudala. I-PCB yengeza ukuphathwa kwephini le-USB-C CC (Configuration Channel) echwebeni engenhla, okudinga isekethe eyengeziwe uma kuqhathaniswa nomklamo ongenhla we-USB-A.

 3. Izikhulisi Zemisebenzi Eminingi ze-USB-C: Ukuguqulwa Kwamachweba kanye Nezikhulisi

Lesi yisigaba sesandisi se-USB esikhula ngokushesha kakhulu. Ikhebula elilodwa le-USB-C elivela kwi-laptop linikeza amachweba edatha e-USB, ukuphuma kwevidiyo, ukuxhumana kwenethiwekhi, futhi ngezinye izikhathi ukulethwa kwamandla — okuhlanganisa ukunwetshwa kwechweba kanye nokuguqulwa kwesixhumi esibonakalayo kudivayisi eyodwa encane.

Ama-adaptha e-USB-C angu-5-in-1 kanye no-7-in-1. Umkhiqizo odumile wokuhamba kanye nehhovisi. Ukucushwa okujwayelekile: 2 × USB-A, 1 × HDMI (4K@30 Hz noma 4K@60 Hz), isifundi sekhadi le-SD esingu-1 ×, i-1 × USB-C PD yokudlulisa ukushaja i-laptop. Isebenza ngebhasi kusuka ku-USB-C host. I-PCB iphethe i-USB hub IC yamachweba edatha, kanye ne-DisplayPort-to-HDMI converter IC (Parade PS176, Lontium LT8711, noma efanayo) yokukhipha ividiyo. I-PCB: Isendlalelo esingu-4–6 ngokwakhiwa kwe -HDI PCB ye-USB-C pin fanout. Usayizi webhodi cishe ngu-70 × 30 mm. I-BOM: $8–25.

Iziteshi zokufaka i-USB-C. Ingxenye ye-premium. Isengezo sedeski esihlala isikhathi eside esithatha indawo yokuxhumeka kwekhebula kukhompuyutha ngayinye ngekhebula elilodwa le-USB-C. Ukucushwa okuvamile: Idatha ye-USB-A engu-2–3×, i-USB-C engu-1×, i-HDMI noma i-DisplayPort ekabili yamamonitha amabili angaphandle, i-Gigabit Ethernet, umsindo ongu-3.5 mm, i-SD/microSD, kanye nokushaja kwe-USB PD engu-60–100 W. I-PCB iyidizayini yama-chip amaningi: i-USB hub IC, isilawuli se-USB-C esine-Alt Mode, isilawuli se-PD, i-DisplayPort MST hub (yamamonitha amabili), i-HDMI converter, i-Ethernet bridge (Realtek RTL8153), kanye ne-audio codec. I-PCB: I-HDI engu-6–8 layer, cishe i-100 × 60 mm. I-BOM: $25–60. Lesi yisigaba somkhiqizo we-USB wabathengi esiyinkimbinkimbi kakhulu futhi silawula imingcele ephezulu kakhulu yokuthengisa.

Ama-IC ayisihluthulelo kuma-expander emisebenzi eminingi:

Emikhiqizweni esebenzisa uxhumano lwe-Ethernet noma lwe-USB-C oludinga ukulawulwa kwe-impedance kanye nokwenqatshwa okufanele kwemodi evamile, ukwakheka kwe-PCB kulandela imithetho ejwayelekile yokuklama i-PCB yokuxhumana yokuqondisa i-differential pair.

4. Izikhulisi ze-USB Ezisebenza Nge-USB Neziteshi Zokushaja

Izikhulisi ze-USB ezisebenzisa ibhasi zinqunyelwe amandla atholakala echwebeni lokusingatha — 500 mA ye-USB 2.0, 900 mA ye-USB 3.0. Kuma-peripherals adonsa amandla amakhulu (ama-drive angaphandle, amafoni, amathebhulethi, ama-DAC), kudingeka isikhulisi se-USB esizisebenzisa sona esinomthombo wamandla wangaphandle.

Ama-hub edeskithophu asebenza ngamandla. Ngokuvamile ama-port angu-4–7 e-USB-A ane-adaptha ye-DC engu-12 V/2.5–5 A. I-port ngayinye ingaletha ugesi we-USB ophelele (500 mA wama-port e-USB 2.0, 900 mA wama-port e-USB 3.0) kanye nokutholwa kokushaja kwe-BC 1.2 kuma-port akhethiwe ukuze kushajwe ifoni/ithebhulethi ku-1.5 A. Umthamo wokunikezwa kwamandla kumele udlule inani lazo zonke imithwalo ye-port engaba khona kanye ne-hub overhead — i-hub enama-port angu-7 enama-port wonke ku-900 mA idinga okungenani i-6.3 A ku-5 V (31.5 W), edinga i-converter yangaphakathi evela kokufakwayo kwe-12 V. Umklamo wendiza yamandla e-PCB ubalulekile: Izimpawu zokusatshalaliswa kwe-VBUS zithwala ugesi ophelele wawo wonke ama-port futhi kumele zibe nosayizi ngokufanele. I-PCB yethusi esindayo enethusi elingu-2 oz ezingqimbeni zamandla ijwayelekile kuma-hub anamanzi ophelele angaphezu kuka-5 A.

Isiteshi sokushaja + ama-hub combos. Umkhiqizo ohlukanisa ama-data ports kuma-charging ports kuphela. Ama-data ports axhuma nge-hub IC njengokujwayelekile. Ama-charging ports kuphela adlula ngokuphelele i-hub IC — axhuma ngqo kugesi ngokusebenzisa ama-IC alawula iphrothokholi yokushaja azinikele (asekela i-BC 1.2, i-Qualcomm QC 3.0/4.0, noma i-USB PD). Lo mklamo uvumela i-2.4 A noma ngaphezulu nge-charging port ngaphandle kokuthinta i-bandwidth yedatha. Isamba samandla esistimu singafinyelela ku-10-15 A ku-5 V, okudinga ukuphathwa kokushisa kwe-PCB ngokucophelela kanye nezendlalelo zethusi ezisindayo.

Ama-hub okudlula e-USB-C PD. I-laptop ixhuma kwi-hub nge-USB-C. I-hub ine-port yokufaka ye-USB-C PD exhunywe kwishaja ye-laptop. I-hub idlula emandleni okushaja iye kwi-laptop (ngokuvamile i-60–100 W) ngenkathi ihlinzeka ngama-port edatha ngasikhathi sinye. I-IC yesilawuli se-PD ixoxisana nge-voltage kanye nogesi neshaja futhi ilawula indlela yamandla. Lena yindlela yokwakha esetshenziswa kuzo zonke iziteshi zesimanje ze-USB-C docking — ikhebula elilodwa ledatha, ividiyo, kanye namandla.

5. Izikhulisi ze-USB Zezimboni Nezifakiwe

Izikhulisi ze-USB zabathengi zibeka phambili ubuncane, ubuhle, kanye nentengo. Izikhulisi ze-USB zezimboni nezihlanganisiwe zibeka phambili ukuthembeka, ukubekezelelana kwemvelo, kanye nokuphathwa okukude.

Ama-hub ezimboni ze-DIN-rail. Ukuvalwa kwensimbi, ukufakwa kwe-DIN-rail engu-35 mm yokufakwa kwekhabhinethi yokulawula. Amachweba e-USB angu-4–16. Amandla e-DC okufaka ububanzi (9–48 V) ane-converter yangaphakathi ye-buck, ukuvikelwa kwe-polarity engemuva, kanye nokucindezela kokuqhuma. Izinga lokushisa lokusebenza elandisiwe: −40 °C kuya ku-+85 °C, okudinga izingxenye zezinga lezimboni kanye ne -laminate ye-PCB ene-Tg ephezulu (Tg ≥ 170 °C) ukuvimbela ukwahlukana emazingeni okushisa aphezulu. Ukuhambisana ne-EMC ne-EN 61000-6-2 (ukungavikeleki kwezimboni) kanye ne-EN 61000-6-4 (ukukhishwa kwezimboni) — kuqine kakhulu kune-Consumer FCC Part 15.

Ukulawulwa kwamandla nge-port ngayinye. Izikhulisi ze-USB zezimboni zivame ukunikeza amandla okuvula/ukuvala amandla nge-port ngayinye okulawulwa yisofthiwe, ukuqapha kwamanje nge-port ngayinye, kanye nokuvikelwa kokushisa ngokweqile nge-port ngayinye. Lokhu kudinga i-microcontroller (STM32 noma efanayo) ku-PCB ngaphezu kwe-hub IC, ukufunda ama-ADC okuqonda kwamanje kanye nokunikeza isikhombimsebenzisi sokulawula kumphathi. Izinhlelo zokusebenza: amapulazi edivayisi okuhlola ama-smartphone kanye nokukhanyisa kwe-firmware, ukuphathwa kwe-kiosk, kanye namanethiwekhi ezimpawu zedijithali lapho ukusetha kabusha i-USB port ekude kubalulekile ekusebenzeni okunganakiwe.

Izikhulisi ze-USB ze-OEM ezifakiwe. Akuyona umkhiqizo wokuthengisa — i-PCB noma i-IC ehlanganiswe komunye umkhiqizo. Cishe yonke i-laptop ifaka okungenani i-USB hub IC eyodwa efakiwe kubhodi lomama ukuze kwandiswe amachweba e-USB alinganiselwe e-chipset kusilawuli sekhibhodi sangaphakathi, i-touchpad, i-webcam, i-fingerprint reader, i-Bluetooth radio, kanye nezixhumi zangaphandle. Ama-USB hub afakwe i-monitor (amachweba angu-2-4 ngemuva kwesibonisi) kanye nama-kiosk/POS terminal hubs ezinye izinhlelo zokusebenza ezifakiwe ezinomthamo ophezulu. Ukukhiqizwa kwebhodi lesekethe le-OEM lama -USB expanders afakiwe kungenye yezigaba zokuhlanganiswa kwe-PCB ezinomthamo ophezulu.

Ukuvikelwa kokuphakama nokwemvelo. Ukusebenza kwekhebula ezindaweni zezimboni kuvezwa umsindo kagesi kanye nama-voltage esikhashana. Ukuvikelwa kokuphakama (ama-TVS diode, amashubhu okukhipha igesi) kuzo zonke izimbobo zangaphandle kuyimpoqo. Ezindaweni ezinomswakama ophezulu — izitshalo zokudla, izindawo zasolwandle, izindawo ezivalekile zangaphandle — ukugqoka okufana ne -PCB ehlanganisiwe kuvikela umswakama kanye nokungcola.

6. Izinto Ezibalulekile Zokuklama i-PCB Zabathuthukisi be-USB

Isandisi ngasinye se-USB sabelana ngesethi efanayo yezidingo zomklamo we-PCB ohlangothini lwesixhumi se-USB, kungakhathaliseki uhlobo lomkhiqizo oluthile:

Impedance yepheya elihlukile. I-USB 2.0 idinga i-90 Ω ± 10% impedance ehlukene; i-USB 3.0/3.2 idinga i-90 Ω ± 5%. Itholakala ngobubanzi be-trace obulawulwayo kanye nesikhala ezingqimbeni zangaphakathi ze-PCB enezingqimba eziningi, okuqinisekiswe ngamakhuphoni e-TDR (Time Domain Reflectometry) ngesikhathi sokwenziwa. Ukwenziwa kwe-PCB elawulwa yi-Impedance kuyadingeka kunoma yimuphi umkhiqizo we-USB 3.0 noma wesivinini esiphezulu.

Ukuvikelwa kwe-ESD. Ama-TVS diode ahlelwe kuzo zonke izixhumi ze-USB zangaphandle, abekwe ngaphakathi kwe-1.5 mm yama-connector pads. Lokhu akunakuxoxiswana ngakho — umcimbi wokuqala we-ESD ongenasivikelo ubhubhisa i-hub IC noma i-bridge IC. Izingxenye zokuvikela ze-ESD kumele zilinganiswe ngesilinganiso sedatha: ama-TVS diode ahamba kancane ane-capacitance ephezulu azokwehlisa ubuqotho besignali ye-USB 3.0.

Ukusatshalaliswa kwamandla. Imikhondo ye-VBUS (5 V) kumele ibe nosayizi wamandla aphelele azo zonke izimbobo ezingezansi. Ihabhu le-USB 3.0 elinamachweba angu-7 elinamachweba alayishiwe lingadonsa isamba esingaphezu kuka-6 A. Ama-calculator wobubanzi be-trace (IPC-2152) anquma ububanzi bethusi obudingekayo bokukhuphuka kwamandla anikeziwe kanye nokushisa. Izindiza zamandla zangaphakathi ezingqimbeni zethusi ezingu-2 oz ziyathandwa kunemikhondo eqondisiwe yemiklamo yamandla aphezulu.

Ukufakwa kwezingqimba. Ama-hub e-USB 2.0 ayisisekelo asebenza kuma-PCB anezingqimba ezimbili. Ama-hub e-USB 3.0 adinga izingqimba ezine okungenani (isignali-umhlaba-amandla-isignali) ukuze kulawulwe i-impedance. Ama-expander e-USB-C amaningi ane-HDMI, i-Ethernet, kanye ne-PD ngokuvamile adinga izingqimba ezingu-6-8 ezinokwakhiwa kwe-HDI (ama-vias angaboni/afihliwe) ukuze kufakwe i-fanout yesixhumi se-USB-C esiminyene.

Ukuphathwa kokushisa. Ama-Hub IC nama-bridge IC achitha ngaphezu kwe-1 W adinga ama-thermal vias ngaphansi kwephakheji ye-IC exhumanisa nezindiza zangaphakathi zomhlaba. Ngaphandle kokushisa okwanele, izinga lokushisa le-IC junction lidlula isilinganiso salo, okubangela ukugoba noma ukwehluleka kwangaphambi kwesikhathi. Ama-PCB esiteshi sokufaka ama-chip amaningi angadinga izindawo eziningi zokushisa kanye nokuthululwa kwethusi okuzinikele ekusabalaleni kokushisa.

Idizayini ye-EMC. Ama-choke emodi evamile kuma-USB differential pairs, ama-ferrite beads ekufakweni kwamandla, kanye nama-ground planes aqhubekayo kuzo zonke izingqimba zesignali. Imikhiqizo ehlose isitifiketi sezimboni noma sezokwelapha kumele iphumelele ukuhlolwa okuqinile kokuzivikela ukuthi imiklamo yezinga labathengi izohluleka.

7. Ukukhiqiza i-USB Expander e-Highleap

I-Highleap Electronics iyifektri yokukhiqiza nokuhlanganisa ama-PCB. Sakha ama-PCB okwandisa i-USB emikhiqizo yabathengi, amakhasimende e-OEM, abahlanganisi bezinhlelo, kanye nabathengisi bamalebula azimele — kusukela kuma-hub e-USB-A alula anamachweba amane kuya eziteshini zokufaka i-USB-C eziyinkimbinkimbi.

Ukwenziwa kwe-PCB. Ukwakhiwa kwezingqimba eziningi ezinezingqimba ezimbili kuya kweziyi-12. I-impedance elawulwayo (90 Ω ± 5%) iqinisekiswe ngamakhuphoni e-TDR. Amandla e-HDI anama-vias angaboni/afihliwe ezakhiwo ezixinene ze-USB-C. Izingqimba zangaphakathi zethusi ezisindayo zokusatshalaliswa kwamandla ezindaweni zokushaja neziteshi zokufaka izintambo. I-laminate ene-Tg ephezulu yemikhiqizo yezinga lezimboni esebenza emazingeni okushisa anwetshiwe.

Ukuhlanganiswa kwe-PCB. I-SMT egcwele + i-solder yamagagasi ekhethiwe yezixhumi ezisebenzisa imbobo (i-USB-A, i-USB-C, i-RJ-45, i-HDMI, izikhala zekhadi le-SD). Ukubekwa kwe-BGA ngokuhlolwa kwe-X-ray kwama-hub IC nama-bridge IC. Ukutholwa kwezingxenye ngabasabalalisi abagunyaziwe — kubalulekile kuma-IC alawula i-USB lapho izingxenye zomgunyathi ziyingozi ebhalwe phansi yeketanga lokuphakelwa. Ukuhlanganiswa kwe-Turnkey PCB kusingatha konke ukuthengwa kwezingxenye kanye nokuhlanganiswa ngokulandelana okukodwa.

Ukwakhiwa kwebhokisi. Ngemikhiqizo ye-USB expander elungele ukuthengiswa, sihlinzeka ngokuhlanganiswa okuphelele kwebhokisi le-elekthronikhi — i-PCB, indawo ebiyelwe, izintambo, izesekeli, izincwadi ezinyathelisiwe, kanye nokupakishwa kokuthengisa. Kuthunyelwa njengomkhiqizo oqediwe endaweni yakho yokugcina impahla noma esiteshini sokusabalalisa. Kutholakala ukupakishwa kwamalebula azimele, imibhalo yezilimi eziningi, kanye nama-adaptha kagesi athile ezweni.

Ukuhlolwa kokusebenza. Amabhodi ahlanganisiwe ayi-100% ahlolwa ngokusebenza: Ukubalwa kwe-USB kuzo zonke izimbobo, ukuqinisekiswa kokuphuma kwe-port ngayinye, ukulethwa kwamanje nge-port ngayinye, indawo yokugibela yokuvikela i-overcurrent, ukuxoxisana kwe-PD (kwemikhiqizo ye-USB-C), kanye nokuqinisekiswa kokukhipha ividiyo (kweziteshi zokufaka). Izinto zokuhlola ezenziwe ngokwezifiso zaklanywa ngomkhiqizo ngamunye.

Cela isilinganiso se-PCB sesandisi se-USB — faka uhlobo lomkhiqizo, ukucushwa kwembobo, inguqulo ye-USB, izidingo zamandla, imininingwane yezemvelo, kanye nevolumu yokuqondisa.

Okuhlobene: Umklamo we-PCB wehabhu le-USB · Imikhiqizo yesandisi sembobo ye-USB · Umklamo wesiguquli se-USB · Ukuhlanganiswa kwesixhumi se-USB-C