Sisitimu yekudzivirira yepamusoro mucharger ine maport akawanda
Machaja ane maport akawanda ari kuwanda mudzimba, mumahofisi, uye kunyange munzvimbo dzeveruzhinji. Adapta imwe chete ine maports akawanda eUSB-A uye/kana USB-C inoonekwa seyakanaka nekuti inogona kuchaja mafoni, mapiritsi, malaptop, maearbud, mawachi ezuva, uye kunyange mabhangi emagetsi panguva imwe chete. Asi shure kweizvozvo zviri nyore pane kuoma kwehunyanzvi kusingaonekwe: kugovera simba nehungwaru, kuchengetedza kugadzikana kwemagetsi, uye kudzivirira zvishandiso zvakabatana kubva kunjodzi dzakasiyana dzemagetsi. Apa ndipo panotamba masisitimu ekudzivirira epamberi. Chinyorwa chino chinokurukura mhando dzedziviriro dzinowanzo shandiswa kumachaja emazuva ano ane maport akawanda, muchidimbu mashandiro aanoita, uye izvo vashandisi vanofanirwa kutarisisa pavanosarudza chigadzirwa.
Sei machaja ane maport akawanda achida dziviriro yakasimba?
Kusiyana nemachaja ane maport maviri chete, machaja ane maport akawanda anofanira kubata mamiriro akasiyana-siyana panguva imwe chete: zvishandiso zvine simba rinodiwa zvakasiyana, tambo dzemhando dzakasiyana, kutaurirana kweprotocol yekuchaja nekukurumidza, uye shanduko dzemutoro dzinongoerekana dzaitika kana midziyo yaiswa pa plug kana kuti yabviswa pa plug. Kana midziyo miviri kana mitatu ichichaja panguva imwe chete, simba rese rinokwira uye zvikamu zvemukati zvinoshanda nesimba. Pasina dziviriro yakakwana, njodzi dzakadai sekunyanya kupisa, tambo pfupi, kukwira kwemagetsi, kana kugoverwa kwesimba kusina kugadzikana zvinogona kukanganisa charger nemidziyo.
Kudzivirira charger hakusi kungo "wedzera" chete; chikamu chikuru chekugadzira chengetedzo. Kazhinji, dhizaini yakanaka yekudzivirira inotarisa nyaya mbiri huru: kuchengetedzeka kwemushandisi (kudzivirira moto/kuvhunduka kwemagetsi) uye kuchengetedzeka kwemudziyo (kudzivirira kukuvara kwebhatiri, IC yekuchaja, kana port).
1) Kudzivirirwa Kwemvura Yakawandisa (OCP) - kudzivirirwa Kwemvura Yakawandisa
OCP inoita kuti magetsi abude kubva pachiteshi asapfuure miganhu yakachengeteka. Magetsi anogona kukwira nekuda kwezvinhu zvakasiyana-siyana, zvakaita setambo yakakuvara, chinobatanidza chakasviba, kana mudziyo uri kuedza kudhonza simba kupfuura simba rechiteshi. Pamachaja ane maport akawanda, OCP inowanzo shanda pamatanho maviri:
– Per-port OCP: port yega yega ine muganho wayo wepari zvino. Kana mudziyo mumwe ukakundikana, port iyoyo inodzikiswa kana kuti simba rayo rinodzikiswa pasina kudzima mamwe maports.
– Total OCP: inoderedza huwandu hwemagetsi kubva kumaports ese kudzivirira adapta huru uye zvikamu zvekushandura simba.
Kushandiswa kwacho kunogona kuitwa nenzira ye current sense resistor iyo inoverengwa nemutongi, ipapo mutongi anoderedza duty cycle mu switching circuit kana kudimbura nzira yemagetsi.
2) Kudzivirirwa kwemagetsi akawandisa (OVP) - kudzivirirwa kwemagetsi akawandisa
OVP inodzivirira michina kubva kumavoltage akawandisa anobuda. Izvi zvakakosha zvikuru nemidziyo yeUSB-C Power Delivery (PD) nekuti voltage yacho inogona kutaurirana (5V, 9V, 12V, 15V, 20V, uye PPS variations). Kukanganisa kwekudzora, kutadza kushanda kwezvikamu, kana kusagadzikana kwenguva pfupi kunogona kukonzera voltage kupfuura zvinodiwa nemudziyo.
Chaja yakanaka icha:
- tarisa voltage inobuda munguva chaiyo,
- misa kuendeswa kwesimba kana kuderedza voltage kana ikapfuura muganho,
- vhura latch-off pasi pemamwe mamiriro (port inodzimwa kusvika tambo yabviswa).
Dziviriro iyi inowanzo batsirwa nePD controller IC uye circuit inokurumidza yekuenzanisa OVP.
3) Dziviriro yeDerektori Pfupi (SCP) - dziviriro yeDerektori Pfupi
SCP ndeimwe yedziviriro dziri nyore asi dzakakosha. Ma "short circuits" anogona kuitika nekuda kwe:
– tambo dzakabviswa,
- chiteshi chekupinda kwechinhu chinofambisa mhepo,
- chinongedzo chakakuvara,
- mvura kana ngura.
Kana kupfupika kukaitika, magetsi anowanzokwira zvakanyanya munguva pfupi, zvichikonzera kupisa zvikamu uye kukonzera kukuvara. Machaja ane maport akawanda anowanzo bvisa simba mukati memamirisekonzi mashoma mushure mekuona kupfupika, ozoedza kudzoreredza nguva nenguva kana kumirira kuti mushandisi abvise waya.
4) Kudzivirirwa pakupisa kwakanyanya (OTP) - kudzivirira kupisa kwakanyanya
Muvengi mukuru wemagetsi emagetsi kupisa. Mumachaja ane maport akawanda, masosi makuru ekupisa anobva ku:
- kushandurwa kweAC-DC kakawanda,
- kugovana simba panguva imwe chete,
- mhando yechinhu (MOSFET, inductor, transformer),
- dhizaini yemhepo inofefetera uye keji.
OTP inoshandisa sensor yekupisa (NTC/thermistor kana sensor yemukati yeIC) kuti:
- kuderedza simba zvishoma nezvishoma (thermal throttling),
– inodzima simba remagetsi kana tembiricha ikapfuura muganho,
- inodzivirira kuora kwezvikamu kwenguva refu.
Chaja yakanaka ine OTP haingodzimi chete kana yapisa, asi inokwanisa kuderedza kubuda kwemagetsi zvakanaka kuti igare yakachengeteka uye yakagadzikana.
5) Kudzivirirwa kwekuwedzera uye kwechinguvana (Kudzivirirwa kwekuwedzera/kwechinguvana)
Giridhi remagetsi harisi nguva dzose rakachena. Kukwira kwesimba kwenguva pfupi kunogona kuitika nekuda kwe:
– mheni (yakananga kana kuti yakakonzereswa),
– zvinhu zvinosimudzira kufema (AC, firiji, pombi),
- kunaka kwekuisa.
Machaja emhando yepamusoro anowanzo shandisa zvinhu zvakaita seMetal Oxide Varistor (MOV) padivi reAC input uye mamwe macircuit anotora surge kuti aderedze peak voltages. Padivi re output, TVS diode kana ESD protection scheme inogona kushandiswa kutsungirira transiently mu USB port, kunyanya kana mushandisi akabata connector munzvimbo yakaoma.
6) Dziviriro yeESD - antistatic ye maports ne controllers
Electrostatic Discharge (ESD) inogona kukanganisa maIC ekudzora, kunyanya pama USB-C ports ane tambo dzekutaurirana (CC, data, uye dzimwe nguva SBU). Dziviriro yeESD inowanzo sanganisira diode array iyo "inotsausa" static surges kuenda pasi isati yasvika kumasekete anonzwa. Izvi zvakakosha mukushandiswa kwezuva nezuva, senge pakubatanidza tambo mushure mekufamba pamakapeti kana mukamuri rine air-conditioner.
7) Dziviriro yekutaurirana kwe USB-C PD uye manejimendi yekutaurirana kwemagetsi
Machaja emazuva ano ane maport akawanda anoita "hurukuro" yedhijitari nemudziyo. Ne USB-C PD, charger nemudziyo zvinoshandisa voltage/current. Sisitimu yekudzivirira pano ine musoro:
- Kusimbiswa kwesimba remagetsi: charger inopa chete ma profiles anotevedzera mwero.
– Kugadzirisa zvikanganiso: kana kutaurirana kwePD kuri kunetsa, charger inodzokera ku5V yakajairika.
– Kudzora PPS: MuPPS (Programmable Power Supply), voltage inogona kuchinja-chinja zvishoma nezvishoma. Chaja inofanira kuchengetedza shanduko mukati memiganhu yakachengeteka kudzivirira kupfurwa zvakanyanya.
Kana charger iine maPD ports akawanda, controller inofanira kukwanisa kudzivirira kusawirirana uye kuve nechokwadi chekuti chiteshi chimwe nechimwe chinowana simba rakachengeteka.
8) Kugovana Simba Rinochinja - kugovana simba rakachengeteka
Ichi ndicho chinhu chinonyanya kuonekwa pakushandisa maport akawanda: paunowedzera mudziyo mutsva, simba rinoshandiswa nemamwe maport rinogona kuchinja. Sisitimu yakanaka yekugovera simba inofanira kufunga nezve:
– muganho wesimba rose readapta (semuenzaniso 65W, 100W),
- kukosha kwemamwe maports (kazhinji chiteshi chikuru cheUSB-C ndicho chinokosheswa),
- zvinodiwa nemudziyo (laptop kana nharembozha),
- inodzivirira "kudonha" kwemagetsi kwechinguvana.
Mamwe machaja anoshandisa static distribution (semuenzaniso, "C1 65W, C2 20W, A 18W"), nepo mamwe epamusoro achishandisa dynamic control nekutarisa mutoro. Dziviriro inoshanda pamwe chete nekutonga kwesimba kudzivirira overcurrent yeport uye kuchengetedza tembiricha. Hunhu hwekushandisa hunoratidzwa nekugadzikana kwechaja pakubatanidza nekubvisa michina: machaja akanaka anoderedza kubatana zvakare uye haakonzeri "kudonha" kakawanda.
9) Kuchengetedzwa kweAC parutivi uye dziviriro yekuchengetedzwa (yekutanga-yechipiri)
Macharger eAC-DC anofanira kuchengetedza kupatsanurwa pakati pedivi rine voltage yakakwira (AC 220V) nedivi rinobuda reUSB (low-voltage). Dhizaini yekudzivirira inosanganisira:
- transformer ine insulation yakakwana,
- daro rekufamba-famba uye nzvimbo iri paPCB,
- optocoupler uye kudzora mhinduro dzakachengeteka,
- fuse uye inrush current limiter.
Kunyangwe zvisingaonekwe nemushandisi, chikamu ichi chakakosha pakuona kana charger yakachengeteka kushandiswa kwenguva refu.
10) Zviratidzo zvekusimbisa uye zvemhando yekudzivirira
Nzira inoshanda yekuongorora hurongwa hwekudzivirira ndeyekutarisa kutevedzera mitemo uye kuenderana kwezvinodiwa. Zvimwe zvinhu zvekufunga nezvazvo:
– Chitupa chekuchengetedza: SNI (yemusika weIndonesia), IEC/EN 62368-1, UL, TUV, kana zvimwe zvitupa zvedunhu.
– Rutsigiro rweprotocol: USB-IF yePD (paya yakanyorwa), pamwe chete netsananguro dzakajeka dzesimba.
- Zvinotsanangurwa zvakajeka pakubuda: kugoverwa kwesimba pachiteshi chimwe nechimwe kunotsanangurwa, kusanganisira kana machiteshi ese achishandiswa.
– Mukurumbira wemugadziri uye wongororo dzebvunzo dzehunyanzvi: bvunzo dzekupisa nekugadzikana kwezvinobuda zvinowanzo ratidza mhando yekudzivirira.
Zvakakosha kuyeuka kuti "kuchaja nekukurumidza" kana kuti "high wattage rating" hazvirevi kuti pane dziviriro yepamusoro. Dzimwe nguva machaja akachipa anogona kukwidza simba rakawanda asi achirasikirwa nemasensa ekupisa, zvikamu zvekudzivirira kwemhepo, kana dziviriro yakasiyana pachiteshi chimwe nechimwe.
Maitiro ekushandisa kudzivirira kwakanyanya
Masisitimu ekudzivirira akagadzirwa sezvipingamupinyi zvekuchengetedza, kwete zvinotsiva tsika dzakachengeteka. Matanho mashoma ari nyore anogona kubatsira:
1. Shandisa tambo yemhando yepamusoro uye simba remagetsi rakakodzera (kunyanya USB-C 3A/5A kuti ishandise simba rakawanda).
2. Dzivisa kufukidza charger nejira kana kuiisa panzvimbo yakamanikana paunenge uchichaja zvishandiso zvakawanda.
3. Bvisa plug kana mudziyo/connector ichipisa zvakanyanya kana kuti paine hwema hwakasimba.
4. Dzivisa masoketi asina kusimba uye kuwedzerwa kwecheni paunenge uchirodha simba rakawanda.
5. Pamalaptop, shandisa maports netambo dzinotsigira PD zvichienderana nezvinodiwa newattage.
Penutup
Machaja ane maport akawanda zvishandiso zviri nyore, asi ane akawanda masisitimu ekudzora simba uye ekudzivirira. OCP, OVP, SCP, OTP, kudzivirira surge, ESD, USB-C PD negotiation management, uye dynamic power sharing zvese zvinoshanda pamwe chete kuti zvive nechokwadi chekuchaja nekukurumidza, kwakasimba, uye kwakachengeteka. Pakusarudza charger ine maport akawanda, funga kwete chete nezvehuwandu hwemaports newattage, asiwo mhando yekudzivirira—nekuti pakupedzisira, charger yakanaka inopfuura kungochaja nekukurumidza; ndeyekudzivirira midziyo yako inodhura kubva kunjodzi dzemagetsi dzezuva nezuva.
