Indlela yeFan5902 yokwandisa ukusetyenziswa kwebhetri yefowuni ephathwayo

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Ibhetri ifile okanye ihlala ihlawuliswa, yeyiphi eyona nto ixhalabisayo? Namhlanje, iifowuni eziphathwayo (ngokukodwa iifowuni ezihlakaniphile) zithandwa ngokukhawuleza kwihlabathi jikelele, iintsuku ezisixhenxe ngeveki, iiyure ezingama-24 ngosuku, abantu bagcina i-intanethi. Abathengi babonakala besoloko beqhuba iifowuni zelizwi, ukuthumela nokufumana ii-imeyile, ukuthumela imiyalezo kunye nokufikelela kwi-Intanethi, abasoze bazi. Nangona kunjalo, zonke ezi zixhobo zefowuni eziphathwayo ziya kudla amandla ebhetri, phakathi kwe-blink, kwaye ibhetri ingamandla enye kuphela.

Ndingayandisa njani ifowuni yam ephathwayo? Ngokuqinisekileyo, sebenzisa ibhetri enkulu ekusombululeni ingxaki, kodwa umsebenzisi uhlala efuna ukuba ifowuni ibe lula, kwaye ilula, iyancipha, ngoko ke ukwanda kwebhetri akwamkelekanga kumsebenzisi. Iinjineli zoyilo ziyaqhubeka nokuphuhlisa indlela yokuphucula ukusebenza kolawulo lwamandla, kwaye zigxininise kwiindawo ezintathu zokugxila ekusebenziseni amandla. Kwifowuni ephathwayo, ukongeza kwiprosesa ye-baseband kunye ne-radio frequency transceiver, iinxalenye ezintathu ezinokutyiwa sisixhobo sokukhulisa amandla (PA), isikrini sokubonisa kunye nesicelo / iprosesa yemifanekiso, ngokulandelanayo.

Kutheni le nto ezi nxalenye zintathu ziza kuba ngumxholo? Isizathu kukuba abantu ngoku bathetha kunye ne-intanethi. Ngeli xesha, isikrini sokubonisa sihlala sivuliwe; Ukongeza, i-PA kufuneka isebenze de isikhululo esisezantsi sidlulise iifowuni zezwi kunye nedatha; Okokugqibela, ukubukela iimuvi ezikwi-intanethi okanye ezinye ii-aplikeshini, usetyenziso Iprosesa kufuneka ihlale isebenza. I-3G yenethiwekhi ye-PA inkulu kakhulu xa isignali ibuthathaka, kuba ifuna amandla amaninzi okuvelisa ukuxhuma kwisikhululo sesiseko, kwaye ugcine iimfuno zomgca ukuqinisekisa ukuba uphawu lwe-3G alunandaba.

Ukusetyenziswa kwamandla e-3GPa kuhambelana namandla aphumayo, amandla amakhulu okuvelisa, ngakumbi ngoku kwibhetri esetyenziswayo. Xa isignali egqithisiweyo iphuma ngakumbi, sebenzisa ngoku ngakumbi. Kukho iiteknoloji ezimbini ezintsha ezinciphisa ukusetyenziswa kwamandla e-PA: i-DC-DC converter kunye nokulandelela imvulophu (i-envelopetracking).

Ukusetyenziswa kwe-DC-DC converter kwi-smart phone iyanda, umgaqo wayo wokusebenza kukunciphisa amandla ombane ombane we-3GPa kuzo zombini iimfuno ezifunekayo zenqanaba lombane, kwaye kunokunciphisa kakhulu izinga lokusetyenziswa kwamandla. Esi sisombululo sinokuzisa iinzuzo ezimbini - eyokuqala kukwandisa umnxeba / ukusetyenziswa, okwesibini kuncitshiswe ukutshatyalaliswa kobushushu. I-FAN5902 ye-flying semiconductor yi-800mA, i-6MHz buck DC-DC converter eyenzelwe i-3GPa, enokunciphisa ukusetyenziswa kwamandla, ukwandisa uxhumano / ixesha lokuthetha.

I-FAN5902 isebenza kunye neeprosesa ze-baseband kunye ne-3GPA ukunciphisa ukusetyenziswa kwamandla. Iprosesa ye-baseband iya kumisela umgangatho wamandla ophumayo we-PA ngokweenkcukacha ezifunyenwe kwisikhululo sesiseko, kwaye emva koko uyiguqule kwi-voltage yokulawula ye-FAN 5902, kwaye uyikhuphe kwi-PA. Ngokuhlengahlengisa ngamandla amandla ombane ombane kunye ne-PA yangoku, i-FAN5902 inokwandisa ubuncinci i-15% yefowuni yefowuni kunye nexesha lokusetyenziswa kwedatha.

Isikrini sokubonisa siyinxalenye yesibini enkulu yokusetyenziswa kwamandla emva kwe-PA, kuba umsebenzisi uphequlula i-intanethi, ufunda i-imeyile okanye ubukele i-TV yeselula / i-Youtube? Ividiyo, isikrini sokubonisa sihlala sikwimo. I-TFTLCD ibalulekile ngoku itekhnoloji yokubonisa, kwaye yi-LED emhlophe ukubonelela ngasemva. Lo mkhwa ubonakala ngakumbi kubukhulu be-LCD ye-screen display market, ngoko ke kuthetha ukuba kukho i-LED emhlophe ngakumbi ukubonelela ngokukhanya okubonakalayo kwisikrini sokubonisa, oku kuthetha ukuba kuyimfuneko ukubonelela ngemisinga emikhulu ye-LED kunye nokubonisa isikrini ngokwayo.

Kwiifowuni eziphathwayo eziphezulu kunye neefowuni ezihlakaniphile, i-DynamicbacklightControl, i-DBC kunye ne-AutoMinousControl, i-ALC ayikwazi ukwenza ukusetyenziswa kwamandla kangangoko kunokwenzeka, kodwa iphinde ikhulise amava abonakalayo omsebenzisi. I-ALC kufuneka isebenzise i-sensor yokukhanya kwe-ambient (i-AmbientlightSensor) ukuze ibone ukukhanya kokukhanya kwendawo engqongileyo kwaye isete i-LED yangoku ngokwe-algorithm kumqhubi we-LED okanye iprosesa yesicelo. Ngoko ke, i-LED yangoku iya kusekwa ngokwemiqathango yokukhanyisa.

Xa indawo engqongileyo imnyama kakhulu, i-LED yangoku ibekwe phantsi, ngelixa ilanga lithe ngqo, libekwe phezulu. Ngakolunye uhlangothi, iteknoloji ye-DBC inokulawula i-LED yangoku ngokuhambelana nomfanekiso / umxholo wevidiyo kwisikrini sokubonisa: Ukuba umxholo wendawo kwi-movie ubumnyama, i-LED yangoku iphantsi; ukuba indawo ikhanya ngakumbi,. Iinkqubo ze-DBC zangoku ngokwe-pulse width modulation (PWM) isignali ekhutshwe yiprosesa yomfanekiso okanye umqhubi we-LCD IC, kunye nokutshintsha umxholo we-movie obonisiweyo.

Umzobo 3 (a) ubonisa iimeko zokusebenza ze-ALC kunye ne-DBC ezifunyenwe yi-flying semiconductor ngokusebenzisa inkqubo yesofthiwe yokufumana isikrini ukubonisa inqanaba lokukhanya okukhanyayo (ngasekhohlo) kunye ne-LED ehambelanayo yangoku. Nangona ingachazwanga ngokupheleleyo, "intonga yokubonisa eluhlaza okwesibhakabhaka" ye-PWM yangaphandle isengabonwa ukuba inqanaba le-PWM elimileyo liyanyuka okanye liyancipha njengomfanekiso okanye umxholo wemuvi. I-fan5702 ye-flying semiconductor yi-180mA intlawulo yepompo ye-LED umqhubi kunye ne-interface ye-I2C, enokubonelela nge-ALC kunye nemisebenzi ye-DBC ngokucwangciswa.

I-sensor yokukhanya kwe-ambient ixhunywe kwiprosesa yesicelo okanye iprosesa ye-baseband, ifumana igalelo kwaye inqume inqanaba elifanelekileyo le-LED langoku ngokwe-algorithm yeemeko zokukhanyisa zangaphandle. Le datha ithunyelwa kwi-FAN 5702 nge-interface ye-I2C, kwaye emva koko usethe i-LED yangoku ngokolwazi. I-PWM / EN pin ye-FAN5702 ilungiselelwe i-PWM, kwaye iqhagamshelwe kumqhubi we-LCD we-IC.

Le yokugqibela ithumela uphawu lwe-PWM kwi-FAN 5702 ngokomfanekiso / umxholo wevidiyo kwisikrini sokubonisa. Umzobo we-4 ubonisa imodyuli yenkqubo ye-FAN5702 ye-ALC kunye ne-DBC ngaxeshanye. Isikrini sokubonisa iselula sisebenzisa i-ALC kunye ne-DBC ukugcina ukuya kuthi ga kwi-50% yokusetyenziswa kwamandla.

Inxalenye yesithathu enkulu yokusetyenziswa kwamandla sisicelo / iprosesa yemifanekiso; ukuba isikrini sokubonisa sivuliwe, i-chipset iya kuqhuba ngokupheleleyo. Nangona kunjalo, ayisoloko isemandleni apheleleyo. Ngokomzekelo, xa i-chipset isebenza kwinqanaba lamandla aphantsi, iteknoloji yokulungiswa kwe-voltage eguquguqukayo (DVS) ingaqeshwa.

Esi sisisombululo esifanelekileyo kakhulu kwiifowuni eziphathwayo kunye nezinye iimveliso ze-elektroniki eziphathwayo ngenxa yokuba amandla ombane ombane angancitshiswa abe ngumbane osezantsi kwaye avumele i-chipset ukuba isebenze kwi-frequency frequency ephantsi, ngaloo ndlela inceda ukunciphisa ukusetyenziswa kwamandla. Apha, isixa se-Power (P) kunye ne-frequency frequency (f) kunye ne-core voltage (V) ye-voltage engundoqo (V) iyalingana. Ke ngoko, ukukhawuleza ukuphindaphindeka kweprosesa, kokukhona kukhulu ukusetyenziswa kwamandla.

Kwaye njengoko i-voltage engundoqo iyancipha, ukusetyenziswa kwamandla kuncitshiswa ngesantya sesikwere. Iprosesa yesicelo inokunikwa amandla yiFan5365. I-FAN5365 yi-6MHz, 800mA / 1A inyathelo le-DC-DC converter kunye ne-interface ye-I2C.

Inokubonelela ngeyona mpembelelo ilungileyo yokugcina amandla. I-interface ye-I2C ingasetyenziselwa ukucwangcisa amandla ombane kuluhlu lwe-12.5mV ukuya kwi-1.

975V ukuhlangabezana neemfuno zamandla okusebenza kwi-chipset. Xa umsebenzisi ejonga ividiyo kwiwebhu, i-FAN 5365 inokubonelela nge-1.2V yombane ongundoqo weprosesa yesicelo ukufumana amandla okusebenza aphezulu, kwaye emva kokuba imuvi igqityiwe, i-voltage iya kuhla iye kwi-0.

8V, faka umgangatho ophantsi wokusebenza. Okwangoku kukho iintlobo ngeentlobo zetekhnoloji ezilula okanye ezintsonkothileyo, ezinokuphucula ukusebenza kolawulo lwamandla ngokubanzi kwiifowuni eziphathwayo (ingakumbi ii-smart phones). Ngokudibeneyo enye okanye zonke ezintathu isisombululo solawulo lwamandla e-PA, isikrini sokubonisa kunye neprosesa engundoqo, ngokulandelanayo, inokugcina amandla, yandise iiyure zokusebenza zeselula.

Olu yilo luvela kumava omsebenzisi wefowuni ephathwayo kunye nemfuno, kuba abasebenzisi abakhathalele ngokwenene, ababonakali kuqweqwe lweefowuni eziphathwayo, akufuneki nditshaje ifowuni ephathwayo ngaphandle kweefowuni eziqhelekileyo.