Fan5902 txoj kev rau kev siv lub xov tooj ntawm tes siv roj teeb

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Leverandør af bærbare kraftværker

Lub roj teeb tuag lossis feem ntau them, qhov twg yog qhov txhawj xeeb dua? Niaj hnub no, cov xov tooj ntawm tes (tshwj xeeb yog cov xov tooj ntse) tau nrov thoob plaws ntiaj teb, xya hnub hauv ib lub lis piam, 24 teev hauv ib hnub, tib neeg khaws online. Cov neeg siv khoom zoo li ib txwm ua suab hu, xa thiab txais email, xa ntawv thiab nkag mus hauv Is Taws Nem, tsis paub. Txawm li cas los xij, tag nrho cov xov tooj ntawm tes no yuav siv roj teeb lub zog, thaum lub ntsais muag, thiab lub roj teeb tsuas yog ib lub zog xwb.

Kuv tuaj yeem txuas kuv lub xov tooj ntawm tes li cas? Tau kawg, theoretically siv lub roj teeb loj dua los daws qhov teeb meem, tab sis tus neeg siv ib txwm xav kom lub xov tooj ua kom lub teeb, thiab qhov smoother, qhov tsawg dua, yog li qhov nce ntawm cov roj teeb yog qhov tsis txaus siab rau tus neeg siv. Cov kws tsim qauv tsim qauv txuas ntxiv txhim kho txoj hauv kev txhim kho kev tswj hwm lub zog, thiab tsom mus rau peb feem ntawm kev tsom mus rau kev siv hluav taws xob. Nyob rau hauv lub xov tooj ntawm tes, ntxiv rau lub baseband processor thiab xov tooj cua zaus transceiver, peb qhov chaw uas yuav tsum tau noj los ntawm lub hwj chim amplifier (PA), tso saib screen thiab daim ntawv thov / duab processor, feem.

Vim li cas peb ntu no yuav ua kom pom tseeb? Qhov laj thawj yog tam sim no tib neeg tab tom tham nrog internet. Lub sijhawm no, lub vijtsam zaub ib txwm qhib; Ntxiv rau, PA yuav tsum ua haujlwm kom txog thaum lub hauv paus chaw nres tsheb xa lub suab hu thiab cov ntaub ntawv; Thaum kawg, saib cov yeeb yaj kiab hauv online lossis lwm yam kev siv, cov ntawv thov Cov txheej txheem yuav tsum tau ua haujlwm. 3G network PA yog tshwj xeeb tshaj yog loj thaum lub teeb liab tsis muaj zog, vim hais tias nws xav tau ntau tso zis hwj chim mus txuas rau lub hauv paus chaw nres tsheb, thiab ua raws li cov kev cai linearity los xyuas kom meej tias 3G teeb liab tsis muaj teeb meem.

Lub hwj chim noj ntawm 3Gpa muaj feem xyuam rau cov zis hluav taws xob, qhov loj dua qhov tso zis hluav taws xob, qhov tam sim no ntau dua hauv lub roj teeb tau noj. Thaum cov teeb liab kis tau ntau dua, haus ntau dua tam sim no. Muaj ob lub thev naus laus zis tshiab uas txo cov kev siv hluav taws xob PA: DC-DC converter thiab hnab ntawv nrhiav (lub hnab ntawv).

Kev siv DC-DC converter nyob rau hauv lub xov tooj ntse yog nce, nws txoj kev ua hauj lwm yog kom txo tau lub hwj chim mov voltage ntawm 3GPa rau ob qho tib si qhov yuav tsum tau tso zis hwj chim theem yuav tsum tau, thiab yuav txo tau heev npaum li cas ntawm lub hwj chim noj. Qhov kev daws teeb meem no tuaj yeem nqa ob qho txiaj ntsig - thawj zaug yog txuas ntxiv hu / siv, qhov thib ob yog txo cov cua sov dissipation. FAN5902 ntawm lub ya semiconductor yog 800mA, 6MHz phaw DC-DC converter tsim los rau 3Gpa, uas tuaj yeem txo qis kev siv hluav taws xob, txuas ntxiv kev sib txuas / tham lub sijhawm.

FAN5902 ua haujlwm nrog baseband processors thiab 3GPA kom txo tau lub zog noj. Baseband processor yuav teeb tsa cov zis hluav taws xob theem ntawm PA raws li cov ntaub ntawv tau txais los ntawm lub hauv paus chaw nres tsheb, thiab tom qab ntawd hloov mus rau kev tswj qhov hluav taws xob ntawm FAN 5902, thiab tso tawm mus rau PA. Los ntawm dynamically kho lub hwj chim mov voltage thiab tam sim no ntawm PA, FAN5902 tuaj yeem txuas ntxiv tsawg kawg 15% xov tooj ntawm tes thiab cov ntaub ntawv siv sijhawm.

Lub vijtsam zaub yog qhov thib ob loj tshaj plaws kev siv hluav taws xob tiv thaiv tom qab PA, vim tias tus neeg siv tau saib hauv online, nyeem email lossis saib TV mobile / Youtube? Video, lub vijtsam zaub yog ib txwm nyob rau hauv xeev. TFTLCD yog tam sim no tseem ceeb cov cuab yeej siv, thiab nws yog dawb LED los muab cov teeb pom kev zoo. Cov qauv no yog qhov pom tseeb dua hauv qhov loj LCD zaub screen lag luam, yog li nws txhais tau hais tias muaj ntau cov LED dawb los muab lub teeb pom kev zoo rau lub vijtsam zaub, uas txhais tau hais tias nws yog qhov tsim nyog los muab cov dej loj dua rau LED thiab tso saib nws tus kheej.

Hauv cov xov tooj high-end thiab cov xov tooj ntse, DynamicbacklightControl, DBC thiab AutoMinousControl, ALC tsis tuaj yeem ua kom lub zog siv ntau npaum li qhov ua tau, tab sis kuj txhim kho cov neeg siv pom kev paub. ALC yuav tsum siv lub teeb pom kev zoo (AmbientlightSensor) txhawm rau txheeb xyuas lub teeb ci ntawm ib puag ncig ib puag ncig thiab teeb tsa LED tam sim no raws li algorithm hauv LED tsav tsheb lossis daim ntawv thov processor. Yog li ntawd, LED tam sim no yuav raug teeb tsa raws li cov teeb pom kev zoo.

Thaum ib puag ncig ib puag ncig tsaus heev, LED tam sim no tau teeb tsa qis, thaum lub hnub ncaj qha, nws tau teem rau qhov siab tshaj plaws. Ntawm qhov tod tes, DBC thev naus laus zis tuaj yeem tswj cov LED tam sim no raws li cov duab / yees duab cov ntsiab lus ntawm lub vijtsam zaub: Yog tias cov ntsiab lus ntawm ib qho kev tshwm sim hauv cov yeeb yaj kiab dim, ces LED tam sim no kuj tsawg; yog hais tias lub scene yog brighter,. DBC cov kev pab cuam tam sim no raws li pulse width modulation (PWM) teeb liab tawm los ntawm cov duab processor lossis LCD tsav IC, thiab hloov cov ntsiab lus ntawm cov yeeb yaj kiab tso tawm.

Daim duab 3 (a) qhia txog ALC thiab DBC kev khiav hauj lwm rooj plaub tau txais los ntawm ya semiconductor los ntawm kev tshuaj ntsuam tau txais software program los qhia txog ambient teeb ci theem (sab laug) thiab coj mus rau LED tam sim no. Txawm hais tias nws tsis tau piav qhia tag nrho, "blue display stick" ntawm sab nraud PWM tseem tuaj yeem pom tias qib PWM zoo li qub nce lossis txo qis raws li cov duab lossis cov ntsiab lus yeeb yaj kiab. Lub kiv cua5702 ntawm ya semiconductor yog 180mA them twj tso kua mis LED tsav tsheb nrog I2C interface, uas tuaj yeem muab ALC thiab DBC ua haujlwm ntawm kev teeb tsa.

Lub ambient lub teeb sensor txuas nrog rau daim ntawv thov processor lossis baseband processor, tau txais cov tswv yim thiab txiav txim siab qhov tsim nyog LED tam sim no raws li qhov algorithm ntawm cov teeb pom kev sab nraud. Cov ntaub ntawv no raug xa mus rau FAN 5702 ntawm I2C interface, thiab tom qab ntawd teeb tsa LED tam sim no raws li cov ntaub ntawv. PWM / EN pin ntawm FAN5702 yog programmed rau PWM, thiab txuas nrog LCD tsav IC.

Lub tom kawg xa PWM teeb liab mus rau FAN 5702 raws li cov duab / yees duab cov ntsiab lus ntawm lub vijtsam zaub. Daim duab 4 qhia qhov system module ntawm FAN5702 ntawm ALC thiab DBC ib txhij. Lub xov tooj ntawm tes zaub screen siv ALC thiab DBC kom txuag tau li 50% ntawm kev siv hluav taws xob.

Qhov thib peb loj tshaj plaws kev siv hluav taws xob tivthaiv yog daim ntawv thov / duab processor; Yog tias lub vijtsam zaub qhib, lub chipset yuav ua haujlwm tag nrho. Txawm li cas los xij, nws tsis yog ib txwm muaj zog. Piv txwv li, thaum lub chipset khiav ntawm qib qis zog, dynamic voltage hloov tshuab (DVS) tuaj yeem ua haujlwm.

Qhov no yog ib qho kev daws teeb meem uas tsim nyog rau cov xov tooj ntawm tes thiab lwm yam khoom siv hluav taws xob uas siv tau vim tias lawv cov khoom siv hluav taws xob tuaj yeem raug txo kom qis qis thiab tso cai rau cov chipset ua haujlwm ntawm qhov tsawg zaus, yog li pab txo qis kev siv hluav taws xob. Ntawm no, qhov sum ntawm lub hwj chim (P) thiab zaus zaus (f) thiab cov tub ntxhais voltage (V) ntawm cov tub ntxhais voltage (V) yog proportional. Yog li ntawd, qhov ceev ntawm lub processor, lub zog siv ntau dua.

Thiab raws li cov tub ntxhais voltage yog txo, lub zog noj yog txo los ntawm lub square ceev. Daim ntawv thov processor tuaj yeem siv los ntawm Fan5365. FAN5365 yog 6MHz, 800mA / 1A kauj ruam DC-DC converter nrog I2C interface.

Nws tuaj yeem muab lub zog txuag hluav taws xob zoo tshaj plaws. Lub I2C interface tuaj yeem siv los ua haujlwm dynamically qhov voltage nyob rau hauv thaj tsam ntawm 12.5mV rau 1.

975V kom ua tau raws li qhov yuav tsum tau muaj peev xwm ntawm cov chipset. Thaum tus neeg siv saib cov yeeb yaj kiab hauv lub vev xaib, FAN 5365 tuaj yeem muab 1.2V core voltage rau daim ntawv thov processor kom tau txais lub zog ua haujlwm siab tshaj plaws, thiab thaum ua yeeb yaj kiab tiav, qhov voltage yuav poob mus rau 0.

8V, nkag mus rau theem qis ua haujlwm hauv xeev. Tam sim no muaj ntau yam yooj yim lossis nyuaj thev naus laus zis, uas tuaj yeem txhim kho tag nrho lub zog tswj kev ua haujlwm ntawm cov xov tooj ntawm tes (tshwj xeeb yog cov xov tooj ntse). Los ntawm kev sib koom ua ke ib lossis tag nrho peb lub zog tswj kev daws teeb meem ntawm PA, tso saib lub vijtsam thiab cov tub ntxhais ua haujlwm, feem, tuaj yeem txuag hluav taws xob, txuas ntxiv cov sijhawm ua haujlwm mobile.

Cov qauv tsim no yog los ntawm cov neeg siv xov tooj ntawm tes kev paub thiab xav tau, vim tias cov neeg siv xav tau tiag tiag txog, tsis txhob tshwm sim ntawm cov xov tooj ntawm tes, Kuv tsis tas yuav rov them lub xov tooj ntawm tes tsis tas siv xov tooj ntawm tes.