Indlela ye-Fan5902 yokwelula ukusetshenziswa kwebhethri leselula

ليکڪ: آئي فلو پاور - Nešiojamų elektrinių tiekėjas

Ibhethri lifile noma livame ukushajwa, yikuphi okukhathaza kakhulu? Namuhla, omakhalekhukhwini (ikakhulukazi amafoni ahlakaniphile) athandwa ngokushesha emhlabeni wonke, izinsuku eziyisikhombisa ngesonto, amahora angu-24 ngosuku, abantu bagcina ku-inthanethi. Abathengi babonakala behlale beqhuba amakholi ezwi, bathumela futhi bamukela ama-imeyili, bathumela imilayezo yombhalo kanye nokufinyelela ku-inthanethi, abazi. Nokho, zonke lezi zici zefoni ephathekayo zizodla amandla ebhethri, phakathi kokucwayiza, futhi ibhethri lingamandla awodwa kuphela.

Ngingayinweba kanjani iselula yami? Yiqiniso, sebenzisa ibhethri elikhudlwana ukuxazulula inkinga, kodwa umsebenzisi uhlale efuna ukuthi ifoni ibe lula, futhi ishelele, ibushelelezi kancane, ngakho ukwanda kwebhethri akwamukeleki kumsebenzisi. Onjiniyela bokuklama bayaqhubeka nokuthuthukisa indlela yokuthuthukisa ukusebenza kokuphathwa kwamandla, futhi bagxile ezingxenyeni ezintathu zokugxila ekusetshenzisweni kwamandla. Kumakhalekhukhwini, ngaphezu kwephrosesa ye-baseband kanye ne-transceiver yefrikhwensi yomsakazo, izingxenye ezintathu ezingadliwa yi-power amplifier (PA), isikrini sokubonisa kanye neprosesa yesicelo / yesithombe, ngokulandelana.

Kungani lezi zingxenye ezintathu zizogxila kakhulu? Isizathu ukuthi abantu manje sebekhuluma ne-inthanethi. Ngalesi sikhathi, isikrini sokubonisa sihlala sivuliwe; ngaphezu kwalokho, i-PA kufanele isebenze kuze kube yilapho isiteshi esiyisisekelo sidlulisela izingcingo zezwi nedatha; Okokugcina, ukuze ubuke amamuvi aku-inthanethi noma ezinye izinhlelo zokusebenza, izinhlelo zokusebenza Iphrosesa kumele nayo ihlale isebenza. Inethiwekhi ye-3G PA inkulu ikakhulukazi uma isignali ibuthakathaka, ngoba ifuna amandla amaningi okukhipha ukuze ixhume esiteshini sesisekelo, futhi igcine izidingo zomugqa ukuze kuqinisekiswe ukuthi isignali ye-3G ayinandaba.

Ukusetshenziswa kwamandla kwe-3GPa kuhlobene namandla okukhiphayo, amandla amakhulu okukhiphayo, amandla amanje ebhethri asetshenziswa. Uma isignali edlulisiwe isiphuma kakhulu, sebenzisa okwamanje kakhulu. Kunobuchwepheshe obusha obubili obunciphisa ukusetshenziswa kwamandla e-PA: i-DC-DC converter kanye nokulandelela imvilophu (i-envelopetracking).

Ukusetshenziswa kwesiguquli se-DC-DC ku-smart phone kuyakhula, isimiso saso sokusebenza siwukunciphisa amandla kagesi we-3GPa ukuze kube kokubili izidingo ezidingekayo zezinga lamandla okukhiphayo, futhi kunganciphisa kakhulu izinga lokusetshenziswa kwamandla. Lesi sixazululo singaletha izinzuzo ezimbili - eyokuqala ukunweba ucingo / ukusetshenziswa, okwesibili ukunciphisa ukuchithwa kokushisa. I-FAN5902 ye-semiconductor endizayo ingu-800mA, i-6MHz buck DC-DC converter eklanyelwe i-3GPa, enganciphisa ukusetshenziswa kwamandla, inwebe ukuxhuma / isikhathi sokukhuluma.

I-FAN5902 isebenza nama-baseband processors kanye ne-3GPA ukunciphisa ukusetshenziswa kwamandla. Iphrosesa ye-baseband izosetha izinga lamandla okukhiphayo we-PA ngokolwazi olutholwe esiteshini sesisekelo, bese iyiguqulela ku-voltage yokulawula ye-FAN 5902, bese iyikhiphela ku-PA. Ngokulungisa ngamandla amandla kagesi kanye ne-PA yamanje, i-FAN5902 inganweba okungenani u-15% wekholi yeselula nesikhathi sokusebenzisa idatha.

Isikrini sokubonisa siyingxenye yesibili enkulu yokusetshenziswa kwamandla ngemva kwe-PA, ngoba umsebenzisi uphequlula ku-inthanethi, ufunda i-imeyili noma ubuka i-TV/YouTube yeselula? Ividiyo, isikrini sokubonisa sihlala sisesimweni. I-TFTLCD njengamanje iwubuchwepheshe bokubonisa obubalulekile, futhi iyi-LED emhlophe ukuhlinzeka ngokukhanya kwangemuva. Lo mkhuba usobala kakhulu kusayizi wemakethe yesikrini sokubonisa i-LCD, ngakho-ke kusho ukuthi kune-LED emhlophe eyengeziwe yokuhlinzeka ngokukhanya okungemuva okuvumelekile esikrinini sokubonisa, okusho ukuthi kuyadingeka ukunikeza ama-currents amakhulu e-LED nokubonisa isikrini ngokwaso.

Kumafoni omakhalekhukhwini asezingeni eliphezulu kanye namafoni ahlakaniphile, i-DynamicbacklightControl, i-DBC ne-AutoMinousControl, i-ALC ayikwazi nje ukwenza ukusetshenziswa kwamandla ngangokunokwenzeka, kodwa futhi ithuthukise ulwazi olubonakalayo lomsebenzisi. I-ALC kufanele isebenzise inzwa yokukhanya kwe-ambient (AmbientlightSensor) ukuze ithole amandla okukhanya kwendawo ezungezile futhi isethe i-LED yamanje ngokuya nge-algorithm kumshayeli we-LED noma iphrosesa yohlelo lokusebenza. Ngakho-ke, i-LED yamanje izosethwa ngokuvumelana nezimo zokukhanyisa.

Lapho indawo ezungezile imnyama kakhulu, i-LED yamanje isethwe phansi, kuyilapho ilanga liqondile, libekwe phezulu. Ngakolunye uhlangothi, ubuchwepheshe be-DBC bungalawula i-LED yamanje ngokuya ngesithombe/ividiyo okuqukethwe esikrinini esiboniswayo: Uma okuqukethwe kwesigcawu ku-movie kufiphele, khona-ke i-LED yamanje nayo iphansi; uma indawo ikhanya kakhudlwana,. I-DBC ihlela okwamanje ngokuya ngesignali ye-pulse width modulation (PWM) ekhishwa iphrosesa yesithombe noma umshayeli we-LCD IC, futhi ishintsha okuqukethwe kwe-movie ebonisiwe.

Umfanekiso 3 (a) ubonisa izimo zokusebenza ze-ALC ne-DBC ezitholwe isemiconductor endizayo ngohlelo lwesofthiwe yokutholwa kwesikrini ukuze kuboniswe ileveli yokukhanya kwe-ambient (kwesokunxele) kanye ne-LED yamanje ehambisanayo. Nakuba kungachazwa ngokugcwele, "induku yokubonisa eluhlaza okwesibhakabhaka" ye-PWM yangaphandle isengabonakala ukuthi izinga le-PWM elimile liyakhuphuka noma liyehla njengoba isithombe noma okuqukethwe kwemuvi. I-fan5702 ye-semiconductor endizayo ingumshayeli we-LED wepompo yokushaja engu-180mA ene-interface ye-I2C, engahlinzeka ngemisebenzi ye-ALC ne-DBC ngokumisa.

Inzwa yokukhanya kwe-ambient ixhunywe kusiprosesa sohlelo lokusebenza noma iphrosesa ye-baseband, ithola okokufaka futhi inquma ileveli yamanje ye-LED efanelekile ngokuya nge-algorithm yezimo zokukhanyisa zangaphandle. Le datha ithunyelwa ku-FAN 5702 nge-interface ye-I2C, bese isetha i-LED yamanje ngokolwazi. Iphinikhodi ye-PWM / EN ye-FAN5702 ihlelelwe i-PWM, futhi ixhunywe kumshayeli we-LCD IC.

Lesi sakamuva sithumela isignali ye-PWM ku-FAN 5702 ngokuya ngokuqukethwe kwesithombe / kwevidiyo esikrinini sokubonisa. Umfanekiso wesi-4 ubonisa imojuli yesistimu ye-FAN5702 ye-ALC ne-DBC ngesikhathi esisodwa. Isikrini sokubonisa umakhalekhukhwini sisebenzisa i-ALC ne-DBC ukonga kufika ku-50% wokusetshenziswa kwamandla.

Ingxenye yesithathu enkulu yokusetshenziswa kwamandla uhlelo lokusebenza / iphrosesa yesithombe; uma isikrini sokubonisa sivuliwe, i-chipset izosebenza ngokugcwele. Nokho, ayihlali isemandleni aphelele. Isibonelo, uma i-chipset isebenza ngezinga eliphansi lamandla, ubuchwepheshe bokulungiswa kwe-voltage eguqukayo (DVS) bungaqashwa.

Lesi yisixazululo esiwafanele kakhulu amafoni omakhalekhukhwini neminye imikhiqizo ye-elekthronikhi ephathekayo ngenxa yokuthi amandla kagesi akhona angancishiswa abe amandla kagesi aphansi futhi avumele i-chipset ukuthi isebenze ngefrikhwensi ephansi, ngaleyo ndlela isize ukunciphisa ukusetshenziswa kwamandla. Lapha, isamba Samandla (P) kanye nefrikhwensi yefrikhwensi (f) kanye ne-voltage eyinhloko (V) ye-voltage eyinhloko (V) iyalingana. Ngakho-ke, lapho imvamisa yephrosesa ishesha, kukhulu ukusetshenziswa kwamandla.

Futhi njengoba i-voltage eyinhloko iyancipha, ukusetshenziswa kwamandla kuncishiswa ngesivinini sesikwele. Iphrosesa yohlelo lokusebenza inganikwa amandla yi-Fan5365. I-FAN5365 iyisiguquli esingu-6MHz, 800mA / 1A isinyathelo se-DC-DC esinokuxhumana kwe-I2C.

Ingahlinzeka ngomphumela ongcono kakhulu wokonga amandla. I-interface ye-I2C ingasetshenziswa ukuhlela amandla kagesi ebangeni lika-12.5mV ukuya ku-1.

975V ukuhlangabezana nezidingo zomthamo wokucubungula we-chipset. Lapho umsebenzisi ebuka ividiyo kuwebhu, i-FAN 5365 inganikeza amandla kagesi angu-1.2V ukuze iphrosesa yohlelo lokusebenza ithole amandla okucubungula aphezulu, futhi uma imuvi isiqediwe, i-voltage izokwehla iye ku-0.

8V, faka isimo sokusebenza esisezingeni eliphansi. Njengamanje kunezinhlobonhlobo zobuchwepheshe obulula noma obuyinkimbinkimbi, obungathuthukisa ukusebenza kokuphathwa kwamandla jikelele komakhalekhukhwini (ikakhulukazi amafoni ahlakaniphile). Ngokudidiyelwa kwezixazululo zokuphathwa kwamandla okukodwa noma ezintathu ze-PA, isikrini sokubonisa kanye ne-processor core, ngokulandelanayo, ingonga amandla, yandise amahora okusebenza eselula.

Le miklamo ivela ekuhlangenwe nakho komsebenzisi weselula kanye nesidingo, ngoba abasebenzisi bayayikhathalela ngempela, ayiveli oqweqweni lomakhalekhukhwini, akudingeki ukuthi ngishaje umakhalekhukhwini ngaphandle kwamaselula avamile.