Ubuchwepheshe Bokushaja Ngokushaja Okusebenza Kakhulu
Esikhathini lapho omakhalekhukhwini, ama-laptop, amaphilisi, ama-smartwatches, ngisho namadivayisi e-IoT eseyingxenye yemikhuba yethu yansuku zonke, isidingo sokushaja okusheshayo nokonga amandla siya ngokuya sikhula. Kodwa-ke, "okusheshayo" kuphela akwanele. Amashaja esimanje ayadingeka ukuthi asebenze kahle kakhulu: ukunciphisa amandla achithekayo njengokushisa, ukugcina impilo yebhethri, ukuphepha ukuwasebenzisa, nokuhlala enobungani nemvelo. Ubuchwepheshe bokushaja obusebenza kahle kakhulu manje bukhona ngokuhlanganiswa kwezinto ezintsha zezinto ze-semiconductor, ukwakheka kwesekethe yamandla, amazinga okuxhumana ahlakaniphile, kanye nokuphathwa kokushisa okuyinkimbinkimbi ngokwengeziwe.
Kusho ukuthini ukuthi i-Ultra-Efficient isho ukuthini?
Kalula nje, ukusebenza kahle kweshaja yisilinganiso samandla adonswa kusuka endaweni yokubeka odongeni kuya kumandla alethwe ebhethrini ledivayisi. Uma amandla amaningi elahleka njengokushisa, kulapho ukusebenza kahle kwehla khona. Inhloso yamashaja asebenza kahle kakhulu:
1. Ukusebenza kahle kokuguqulwa okuphezulu (ukushisa okuncane).
2. Ukulawula ukushaja okuvumelana nezimo ngokwezimo zebhethri kanye nokushisa.
3. Amandla aphezulu azinzile ngaphandle kokushintshashintsha okuyingozi.
4. Usayizi omncane kakhulu osebenza kahle kakhulu.
5. Ukuhambisana okujwayelekile ukunciphisa imfucuza ye-e.
Ngamanye amazwi, ukushaja okusebenza kahle kakhulu kuyinhlanganisela yokonga amandla, isivinini, ukuphepha, kanye nokusimama.
Ukuguquka Kweshaja: Kusukela Ku-Linear kuya Ku-Switching
Amashaja okuqala ayevame ukusebenzisa izilawuli ezilula eziqondile, kodwa ayechitha imali ngoba i-voltage eyengeziwe yayihlakazeka njengokushisa. Njengoba izidingo zamandla zanda, imboni yaphendukela ekushintsheni amandla kagesi (i-SMPS): izakhiwo ezivula futhi zivale ama-transistors ngokushesha, okuvumela amandla ukuthi adluliselwe ngama-inductor/ama-transformer ngempumelelo enkulu. Ukusuka lapho, ubuchwepheshe bashintsha baba yi-topology eyinkimbinkimbi kakhulu efana nalokhu:
– I-Flyback (evamile kuma-adapter amancane).
– I-Forward, i-LLC resonant, kanye ne-quasi-resonant (esebenza kahle kakhulu kumandla aphezulu).
- Ukulungiswa okuhambisanayo, ukufaka esikhundleni ama-diode ngama-MOSFET ukuze kuncishiswe ukulahleka kwamandla.
Ama-topologies aguquguqukayo njenge-LLC asiza ukunciphisa ukulahlekelwa kokushintsha futhi athuthukise ukusebenza kahle, ikakhulukazi kumashaja anamandla amakhulu njengama-laptop namashaja anezimbobo eziningi.
Indima Enkulu ye-GaN ne-SiC: Ama-Semiconductors Esizukulwane Esilandelayo
Enye yentuthuko enkulu emhlabeni wamashaja ivele ekusetshenzisweni kwezinto ezintsha ze-semiconductor, ikakhulukazi i-Gallium Nitride (GaN) kanye, kwezinye izinhlelo zokusebenza, i-Silicon Carbide (SiC). Uma kuqhathaniswa nama-transistors avamile asekelwe ku-silicon, i-GaN inezinzuzo ezilandelayo:
– Ukushintsha okusheshayo, ngakho-ke izingxenye ezingasebenzi (ama-transformer, ama-inductor, ama-capacitor) zingenziwa zibe zincane.
– Ukulahlekelwa amandla okuphansi, ngakho ukushisa kuyancishiswa.
– Amandla aphezulu, okuvumela ishaja ukuthi ibe ncane kodwa ibe namandla.
Umphumela uba ukuthambekela kokushaja kwe-GaN okuncane okunikeza umphumela ongu-65W, 100W, ngisho no-140W. Ukusebenza kahle okwandisiwe akugcini nje ngokwenza ukushaja konge kakhulu kodwa futhi kusiza ukugcina idivayisi ne-adaptha kusezingeni lokushisa eliphephile.
Izindinganiso Zokushaja Ezihlakaniphile: Ukulethwa Kwamandla E-USB kanye ne-PPS
Ukusebenza kahle akukhona nje kuphela ngezingxenye; kumayelana nekhono leshaja kanye nedivayisi lokushintshanisa i-voltage kanye nomsinga ongcono kakhulu. Yilapho ukulethwa kwamandla e-USB (i-USB-PD) kungena khona. I-USB-PD ivumela amadivayisi ukuthi acele iphrofayili yamandla efanele, njenge-5V, 9V, 15V, noma i-20V, okuvumela ukuthi umsinga ulungiswe ukuze kuncishiswe ukulahlekelwa okunamandla kwikhebula.
Okuthuthuke kakhulu yi-PPS (Programmable Power Supply)—isici ku-USB-PD esivumela ukulungiswa kwe-voltage okuncane (izinyathelo ezincane). Nge-PPS, ishaja ingaletha i-voltage eduze nezidingo zangempela zesekethe yokushaja ibhethri, okuholela ekuguqulweni okusebenzayo ngaphakathi kwefoni kanye nokunciphisa ukushisa. Ubuchwepheshe obuningi besimanje "bokushaja okusheshayo" busebenzisa lo mqondo, kokubili ukusheshisa ukushaja kanye nokugcina amazinga okushisa elawulwa.
Ukuphathwa Kokushisa: Isihluthulelo Sokusebenza Kahle Kwangempela
Cishe wonke amandla "alahlekile" kushaja agcina esewukushisa. Ngakho-ke, ishaja esebenza kahle kakhulu kumele ibe nomklamo omuhle wokushisa, okuhlanganisa:
- Ukuhlelwa kwe-PCB okuhle kakhulu ukunciphisa ukumelana nezindawo ezishisayo.
– Izinto zokufaka ikheyisi ezisiza ekushabalaliseni ukushisa.
- Izinzwa zokushisa nokuvikela eziqapha izingxenye ezibalulekile.
- I-algorithm yokunciphisa amandla (ukunciphisa) uma izinga lokushisa liphezulu kakhulu.
Ijubane lokushaja livame ukulinganiselwa hhayi ngokukhishwa kwamandla, kodwa ngekhono lesistimu lokuphatha ukushisa. Njengoba amazinga okushisa enyuka, ibhethri ngokuvamile lizonciphisa amandla okufaka ukuze kuphephe. Ishaja esebenza kahle isiza ukuvimbela ukushisa ngokweqile kwasekuqaleni, okuvumela ukushaja okusheshayo kuhlale isikhathi eside.
Ukushaja Okusebenzayo Kwamachweba Amaningi
Amashaja anamuhla avame ukuba namachweba amaningi (i-USB-C kanye ne-USB-A) ukuze ashaje amadivayisi amaningi ngasikhathi sinye. Inselele iwukusabalalisa amandla ngobuhlakani ngaphandle kokunciphisa kakhulu ukusebenza kahle. Amashaja asebenza kahle kakhulu asebenzisa:
– Ukwabiwa kwamandla aguqukayo, ukubeka phambili amadivayisi athile.
– Ukulawula umthwalo ukuze kugcinwe i-voltage izinzile lapho idivayisi ingaxhunyiwe/ixhunyiwe.
– Ukutholwa kwekhebula kanye nephrofayili ukuze amandla “angaphoqelelwa” kumadivayisi angasekelwe.
Ukusebenza kahle ezimweni ezinamachweba amaningi akukhona nje ngezinombolo zelebhu, kodwa futhi nokuzinza komkhiqizo ngesikhathi sokusetshenziswa kwangempela.
Ama-algorithm ebhethri nokushaja: Ukushaja okunezigaba nge-CC-CV
Kumadivayisi, amabhethri e-lithium avame ukushajwa kusetshenziswa indlela ye-CC-CV (Constant Current – Constant Voltage): ekuqaleni ngogesi ophezulu, ongaguquki, bese kuthi njengoba ukushaja kusondela kugcwele, kushintshelwe kugesi ongaguquki bese kwehla ugesi. Ukushaja okusebenza kahle kakhulu kusebenzisa amasu engeziwe anjengalawa:
– Ukushaja isinyathelo ukuze kulinganiswe ukushisa nesivinini.
- Imikhawulo eqondile esekelwe ekushiseni.
– Ukuthuthukisa kusuka ku-20–80% ukuze kwandiswe isikhathi sokuphila kwebhethri.
Amanye amafoni asebenzisa amabhethri e-dual-cell noma amaphampu okushaja ukuze athole amandla aphezulu ngokukhipha ukushisa okuphansi. Empeleni, ukusebenza kahle kakhulu kwenzeka lapho ishaja nedivayisi kusebenza njengohlelo olulodwa.
Amandla Okulinda Nokusebenza Kahle Uma Ungashaji
Ishaja ehlala ixhunywe ku-socket yodonga ngisho noma ingasetshenziswa isasebenzisa amandla amancane (amandla okulinda). Imithethonqubo yomhlaba wonke idinga ukuthi ama-adapter abe nokusetshenziswa kwamandla okulindile okuphansi kakhulu. Kumashaja asebenza kahle kakhulu, izifunda zokulawula zesimanje zingangena kwimodi yokonga, zinciphise ukuvuza futhi zihlale zilungele ukubona lapho idivayisi ixhunyiwe.
Nakuba kungase kubonakale kuncane, ukwehla kwamandla okulinda kunomthelela omkhulu uma kubalwa esikalini sezigidi zemindeni namahhovisi.
Ukuphepha: Ingxenye Yokusebenza Kahle
Ukusebenza kahle kakhulu akufanele kube yingozi ekuphepheni. Amashaja asebenza kahle kakhulu ngokuvamile anezendlalelo zokuvikela ezifana nalezi:
- Ukuvikelwa kwe-over-voltage, over-current, kanye ne-short-circuit
- Ukuvikelwa kokushisa kwe-adaptha kanye nokushisa kwesixhumi
– Ukushisa kukagesi okuhlangabezana nezindinganiso (isib. i-IEC)
- Ukuvikelwa ekukhuphukeni kwamandla kagesi
Amadivayisi aphephile asebenza kahle kakhulu, futhi ukuzinza kusiza ukusebenza kahle ngokunciphisa izimo "zokucindezeleka" ezibangela ukushisa noma ukunqamuka kukagesi ngokuzumayo.
Umthelela Wezemvelo Nekusasa Labatshaji
Ubuchwepheshe bokushaja obusebenza kahle kakhulu buhambisana nemigomo yokusimama. Ukusebenza kahle kakhulu kusho ugesi ongachithwa kakhulu. Ukuhlelwa kwezindinganiso ezifana ne-USB-C kanye ne-USB-PD kusiza ekunciphiseni isidingo samashaja amaningi, ngaleyo ndlela kuncishiswe imfucuza kagesi.
Uma sibheka phambili, sizobona izitayela eziningana ezibalulekile:
1. I-GaN iya ngokuya ishibhile futhi ivame kakhulu, okwenza amashaja amancane, anamandla amakhulu abe yiwona ajwayelekile.
2. I-USB-PD enamaphrofayili anamandla aphezulu kanye nokulungiseka okuhle.
3. Ukuhlanganiswa kobuhlakani: ishaja eqaphela amaphethini okusetshenziswa futhi ithuthukise ukushaja impilo yebhethri.
4. Ukushaja okungenantambo okusebenza kahle kakhulu, ngokulungiswa okungcono kwamagnetic kanye nokulawula amandla okuguquguquka.
5. Uhlelo lwamandla asekhaya: ama-adaptha axhunywe ekuphathweni kwamandla okuhlakaniphile ukuze ashaje lapho amazinga kagesi ephansi noma lapho kunamandla amaningi avela kumaphaneli elanga.
I-Penutup
Ubuchwepheshe bokushaja obusebenza kahle kakhulu abugcini nje ngoku "shesha." Kungukuvela okuphelele: kusukela ezintweni ze-semiconductor ezifana ne-GaN, ama-topology okuguqulwa kwamandla esimanje, amazinga okuxhumana ahlakaniphile njenge-USB-PD ne-PPS, kuya ekuphathweni kokushisa okuqinile kanye nokuvikelwa kokuphepha. Umphumela wokugcina uwukuhlangenwe nakho kokushaja okulula kakhudlwana, amadivayisi ahlala isikhathi eside, ukusetshenziswa kwamandla okuphansi, kanye nomthelela ophansi kwemvelo. Njengoba ijubane lokusungula izinto ezintsha liqhubeka nokusheshisa, amashaja esikhathi esizayo azoba mancane, ahlakaniphe, futhi asebenze kahle kakhulu - okwenza ukushaja kube yingxenye engenamthungo yezimpilo zethu zedijithali, hhayi isithiyo.
