maximumykt
ykt 178zx com cn 时间:2021-03-01 阅读:()
TheDesignofLowPowerBandgapReferenceYunqianZhang1,a,WeidongGeng1,b*,XiZeng1,c,ZhixunYang2,a1InstituteofPhoto-electronicsThinFilmDevicesandTechniqueofNankaiUniversity,KeyLaboratoryofPhoto-ElectronicsThinFilmDevicesandTechniqueofTianjin,KeyLaboratoryofOpto-electronicInformationScienceandTechnology,NankaiUniversity,Tianjin300071,China;2BeijingSigmaMicroCompany,Beijing100085,China.
1,azhangyq_nku@163.
com,1,bgengwd@nankai.
edu.
cn,1,czengxi1213@126.
com2,ayangzx@sigma.
com*Correspondingauthor:WeidongGeng:gengwd@nankai.
edu.
cn.
Keywords:Bandgap,Lowpower,Non-overlapclock,Capacitance-RatioAbstract.
Thispaperpresentsanovellowpowerbandgapreferencecircuit,thebandgapreferenceadoptshalfaperiodworkingmechanism.
Theoperationalamplifierdoesn'tworkduringtheswitchedcapacitornetworksampling.
Andtheoperationalamplifierworksafterthechargebalanced.
Thebandgapreferencerunsdiscontinuously.
Thedesignimplementsinstandard0.
18umCMOSprocess.
Thesimulationresultshowsthat,thecircuitconsumes19.
8uAat3.
3V.
Thenoiseofthecircuitinlowfrequencyachieves3.
9/√andthetemperaturecoefficientis21ppm/℃.
1.
IntroductionReferencevoltageblockisthefundamentalpartofthepowermoduleofelectricalsystem,itsperformanceparameters,suchasaccuracystabilityandsoon,decidestheperformanceoftheelectricalsystem.
Inrecentyears,especially,electronicproductsbecomeminiaturizationandportability,referencevoltageblockneedslowerpowerdissipation.
Thedesignofthereferencevoltageblockadoptsbandgapreferencestructuregenerally.
In2012,Zhouzekunpresentsahighprecisionhigh-ordercurvature-compensatedbandgapreferencecompatiblewithstandardBiCMOSprocess.
Experimentalresultsoftheproposedbandgapreferencedemonstratethatatemperaturecoefficientof5ppm/℃isrealizedat3.
6Vpowersupplywhiledissipatingamaximumsupplycurrentof25uA[1].
Inthesameyear,Peng-YuChenpresentsabandgapreferencewhichusesalow-gainamplifiertogenerateanaccuratereferencevoltage.
Theaveragepowerconsumptionisapproximately24.
6uWat1Vsupplyvoltage,whichexport434.
2mV[2].
In2013,CaoYingshowsatotal-ionizing-doseradiationtoleranceofbandgapreferenceindeep-submicronCMOStechnology,whichreachesatemperaturecoefficientof15ppm/℃from-40℃to125℃andconsumes50uA[3].
Inthesameyear,A.
Martnez-Nietodesignsalowtemperaturecoefficient,curvature-compensatedCMOSbandgapvoltagereference,whichimplementsinstandard0.
18umCMOSprocesswith1.
8Vpowersupply.
Thecircuithasa4-bittrimmingcircuittocompensateforprocessvariations.
Theoutputvoltageis1.
225VandshowsaTClowerthan2ppm/℃overatemperaturerangeof160℃andthepowerdissipationis620uW[4].
In2014,TommasoVerginepresetsabandgapreferencecircuitwhichhasbeendesignedtobeRadiation-Hardupto1Grad.
Thecircuithasbeendevelopedinacommercial65nmCMOStechnologywith1.
2Vofnominalvoltagesupply.
Thepowerconsumptionis240uWandtheoutputvoltageis331.
6mV[5].
Inthesameyear,BillMaproposesanovelCMOSbandgapreferencewithhigh-ordercurvature-compensationbyusingMOStransistorsoperatinginweakinversionregion.
Theexperimentalresultsshowthatthebandgapreferenceachieves4.
5ppm/℃andconsumes36uAat1.
2V[6].
Allresearchmentionedaboveemploytypicalbandgapreferencestructurewiththemechanismofworkingcontinuously.
Theprincipleofthetypicalbandgapreferencestructureamplifiesthevoltagewithratio-resistance,whichintroducesthethermalnoiseunavoidably.
Inallusiontoproblemsproposed,thispaperpresentsamechanismofhalfaperiodwhichreducestheworkingtimeoftheoperationalamplifiertolessenthepowerdissipation.
Thisbandgapreferencecircuitadoptscapacitancetoamplifythevoltagewithlowerthermalnoise.
2.
Ratio-capacitanceBandgapReferenceCircuitBasedonprincipleofswitchedcapacitance,capacitanceratiobandgapreferencedividedtheworkingtimeintotwonon-overlappartsemployingtwonon-overlapclock,asshowedinFig.
1.
ThecapacitanceC1samplesVBE1-VBE2inthefirstphaseandtheoutputvoltageofthecircuitismaintainedbyloadcapacitance.
Accordingtotheprincipleofchargeconservation,thechargeofcapacitanceC1transferstocapacitanceC2.
ThemultipleofC1toC2willamplifythevalueofVBE1-VBE2whiletheswitchattheoutputendclosingwiththeoutputvoltageVbg.
Fig.
1CapacitanceRatioBandgapReference3.
HalfaperiodWorkingmechanismCapacitanceratiobandgapreferencedividestheworkingtimeintotwoparts.
Theoperationalamplifierisusedasabufferinthefirstphasewhilesamplingthedifferenceofvoltage.
Accordingtotheprincipleofchargeconservation,thecircuitmultiplythedifferenceofvoltage.
Thestableoutputreferencevoltageiscomposedofthenegativetemperaturecoefficientofthevoltageandthemagnifiedpositivetemperaturecoefficientofthevoltage.
Powerdissipationoftheoperationalamplifieristhemainsourceinthebandgapreference.
Auniversalmethodoflow-powerdesignistoreducethepowerconsumption.
Reducingtheworkingtimeisalsoaneffectivewaytodesignalowpowerbandgapreference.
Theoperationalamplifierinthecapacitanceratiobandgapreferencedoesn'tneedtoworkinthefirstphasewithoutlossofchargeinthesamplingcapacitor.
Andtheoperationalamplifierinthebandgapreferenceworksinclosedloop,exportingthestableoutputvoltageasreferencevoltagedirectlyinthesecondphase.
Thispapersavesthepowerdissipationoftheoperationalamplifierinthefirstphasewithclosedoperationalamplifier.
Bottomplatesamplingtechnique,replacingtheclosedoperationalamplifierusedasabuffer,hasbeenusedinthedesignforsavingthechargeatthenegativeport.
Afteroptimizingthestructure,showedinFig.
1forlowerpowerdissipation,enablesignalEN_Phase2hasbeenaddedtotheoperationalamplifier,asFig.
2.
ThechargeinthecapacitanceC1transferstothecapacitanceC2inthesecondphasewiththeopeningoperationalamplifier.
Forthetimebeing,theoutputendofoperationalamplifierlinkstotheoutputendofthecircuitwhentheoutputvoltageoftheoperationalamplifierbecomesthereferencevoltageVbg.
Vbg=VBE1+nVBE.
(1)Fig.
2Half-periodCapacitorRatioBandgapReferencePhase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgPhase1Phase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgEN_Phase2Theoperationalamplifierinthebandgapreferenceadoptsthemechanismofhalfcycleworktimewhichcanreducethepowerconsumptionavailably.
Afterturningontheoperationalamplifier,thecircuitchargetheparasiticcapacitance,whichdecreasesthesettlingtimeoftheoutputvoltagewiththehalfaperiodworkingmechanism.
Sothehalfaperiodworkingmechanismneedsfasteroperationalamplifierwhichwillincreasethepowerconsumptionofthecircuit.
Apeakvalueoftheoutputvoltagewillbeproducedbecauseofnon-overlapclock,whichinfluencestheaccuracyofthebandgapreference.
AsshownasFig.
3,theenablesignalEN_Phase2hasbeenoptimizedtoresolvetheproblemoftheparasiticcapacitance.
Ensuringtheparasiticcapacitancecharged,theenablesignalEN_Phase2Fwillbeenabledadvanced.
Fig.
3OptimizedHalf-periodCapacitorRatioBandgapReference4.
SimulationExperimentsandAnalysisConsideringthecurrentapplyingtotheloadoutsideandtheloadcapacitanceinside,thespeedoftheclockshouldbechosen.
Theparasiticcapacitancesshouldreachthebalancedstatebeforetheoperationalamplifierworkingintheclosedloop.
Aheadofthesecondphase,theoperationalamplifierhasbeenenabledtoensurestableoutputvoltagewhilethecapacitanceratiomultipliesthevoltage.
Inlogic,thefallingedgeoftheEN_Phase2FissynchronizedwiththerisingedgeofthePhase2but,actually,thefallingedgeoftheEN_Phase2Fenablestheoperationalamplifierinadvance.
ThetimeinadvanceofEN_Phase2Fcanbedecidedconsideringthevalueoftheparasiticcapacitance.
Inthispaper,theratioofcapacitancebetweenC1andC2iselectedas4,aftertakingareaofthechip,powerconsumedbygeneratingtheVBE1andVBE2andthenoisecharacterofthecapacitance.
Thetemperaturecharacteristicofthecapacitanceratiobandgapreferencefrom-20℃to80℃hasbeenshownasFig.
4withthevarietyof7mVattheendofthecircuit.
Theoutputvoltagecanbestableat10.
75uswithsteadypowersupply,asshowninFig.
5.
Fig.
4SimulationResultofTemperaturecharacteristicFig.
5SimulationResultoftransientresponseTable1showsthesimulationresult.
Aftercomparingthisworkwithothers,thepowerdissipationofthecircuitissuperiortoothers.
Table1AnalysisofSimulationResultPerformanceParameterThiswork[2][3]SupplyCurrent(uA)19.
8uA24.
6uA50uATemperatureCoefficient(ppm/℃)21ppm/℃13.
29ppm/℃15ppm/℃Phase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgEN_Phase2F5.
SummaryAfteranalyzinganddiscussingtheapplicationanddevelopmentdirectionofbandgapreference,thispaperpresentsalowpowerratio-capacitancebandgapreferencecircuit,whichcanreducepowerdissipation.
ThecircuitadoptscascadeOp-ampwhichcanimproveresponsespeedandaccuracyofthecircuit.
Simulationresultshowsthatthetotalpowerdissipationis19.
8uAat3.
3V,low-frequencynoiseachieves3.
9uV/√Hzandthetemperaturecoefficientofthecircuitis21ppm/℃.
References[1].
ZhouZK,ShiY,HuangZ,etal.
A1.
6-V25-A5-ppm/CCurvature-CompensatedBandgapReference[J].
Circuits&SystemsIRegularPapersIEEETransactionson,Vol.
59(2012)No.
2,p.
677-684.
[2].
ChenPY,ChangSJ,HuangCM,etal.
A1-VCDSbandgapreferencewithouton-chipresistors[C],CircuitsandSystems(APCCAS),2012,p.
160-163.
[3].
YingC,DeCockW,SteyaertM,etal.
A4.
5MGyTID-TolerantCMOSBandgapReferenceCircuitUsingaDynamicBaseLeakageCompensationTechnique[J].
NuclearScienceIEEETransactionson,Vol.
60(2013)No.
4,p.
2819-2824.
[4].
Martinez-NietoA,Sanz-PascualMT,Rosales-QuinteroP,etal.
Abandgapvoltagereferencein0.
18mCMOStechnology[C]//CircuitsandSystems(MWSCAS),2013,p.
97-100.
[5].
VergineT,MichelisS,DeMatteisM,etal.
A65nmCMOStechnologyradiation-hardbandgapreferencecircuit[C]//MicroelectronicsandElectronics(PRIME),2014,p.
1-4.
[6].
MaB,YuF.
ANovel1.
2–V4.
5-ppm/°CCurvature-CompensatedCMOSBandgapReference[J].
Circuits&SystemsIRegularPapersIEEETransactionson,Vol.
61(2014)No.
4,p.
1026-1035.
1,azhangyq_nku@163.
com,1,bgengwd@nankai.
edu.
cn,1,czengxi1213@126.
com2,ayangzx@sigma.
com*Correspondingauthor:WeidongGeng:gengwd@nankai.
edu.
cn.
Keywords:Bandgap,Lowpower,Non-overlapclock,Capacitance-RatioAbstract.
Thispaperpresentsanovellowpowerbandgapreferencecircuit,thebandgapreferenceadoptshalfaperiodworkingmechanism.
Theoperationalamplifierdoesn'tworkduringtheswitchedcapacitornetworksampling.
Andtheoperationalamplifierworksafterthechargebalanced.
Thebandgapreferencerunsdiscontinuously.
Thedesignimplementsinstandard0.
18umCMOSprocess.
Thesimulationresultshowsthat,thecircuitconsumes19.
8uAat3.
3V.
Thenoiseofthecircuitinlowfrequencyachieves3.
9/√andthetemperaturecoefficientis21ppm/℃.
1.
IntroductionReferencevoltageblockisthefundamentalpartofthepowermoduleofelectricalsystem,itsperformanceparameters,suchasaccuracystabilityandsoon,decidestheperformanceoftheelectricalsystem.
Inrecentyears,especially,electronicproductsbecomeminiaturizationandportability,referencevoltageblockneedslowerpowerdissipation.
Thedesignofthereferencevoltageblockadoptsbandgapreferencestructuregenerally.
In2012,Zhouzekunpresentsahighprecisionhigh-ordercurvature-compensatedbandgapreferencecompatiblewithstandardBiCMOSprocess.
Experimentalresultsoftheproposedbandgapreferencedemonstratethatatemperaturecoefficientof5ppm/℃isrealizedat3.
6Vpowersupplywhiledissipatingamaximumsupplycurrentof25uA[1].
Inthesameyear,Peng-YuChenpresentsabandgapreferencewhichusesalow-gainamplifiertogenerateanaccuratereferencevoltage.
Theaveragepowerconsumptionisapproximately24.
6uWat1Vsupplyvoltage,whichexport434.
2mV[2].
In2013,CaoYingshowsatotal-ionizing-doseradiationtoleranceofbandgapreferenceindeep-submicronCMOStechnology,whichreachesatemperaturecoefficientof15ppm/℃from-40℃to125℃andconsumes50uA[3].
Inthesameyear,A.
Martnez-Nietodesignsalowtemperaturecoefficient,curvature-compensatedCMOSbandgapvoltagereference,whichimplementsinstandard0.
18umCMOSprocesswith1.
8Vpowersupply.
Thecircuithasa4-bittrimmingcircuittocompensateforprocessvariations.
Theoutputvoltageis1.
225VandshowsaTClowerthan2ppm/℃overatemperaturerangeof160℃andthepowerdissipationis620uW[4].
In2014,TommasoVerginepresetsabandgapreferencecircuitwhichhasbeendesignedtobeRadiation-Hardupto1Grad.
Thecircuithasbeendevelopedinacommercial65nmCMOStechnologywith1.
2Vofnominalvoltagesupply.
Thepowerconsumptionis240uWandtheoutputvoltageis331.
6mV[5].
Inthesameyear,BillMaproposesanovelCMOSbandgapreferencewithhigh-ordercurvature-compensationbyusingMOStransistorsoperatinginweakinversionregion.
Theexperimentalresultsshowthatthebandgapreferenceachieves4.
5ppm/℃andconsumes36uAat1.
2V[6].
Allresearchmentionedaboveemploytypicalbandgapreferencestructurewiththemechanismofworkingcontinuously.
Theprincipleofthetypicalbandgapreferencestructureamplifiesthevoltagewithratio-resistance,whichintroducesthethermalnoiseunavoidably.
Inallusiontoproblemsproposed,thispaperpresentsamechanismofhalfaperiodwhichreducestheworkingtimeoftheoperationalamplifiertolessenthepowerdissipation.
Thisbandgapreferencecircuitadoptscapacitancetoamplifythevoltagewithlowerthermalnoise.
2.
Ratio-capacitanceBandgapReferenceCircuitBasedonprincipleofswitchedcapacitance,capacitanceratiobandgapreferencedividedtheworkingtimeintotwonon-overlappartsemployingtwonon-overlapclock,asshowedinFig.
1.
ThecapacitanceC1samplesVBE1-VBE2inthefirstphaseandtheoutputvoltageofthecircuitismaintainedbyloadcapacitance.
Accordingtotheprincipleofchargeconservation,thechargeofcapacitanceC1transferstocapacitanceC2.
ThemultipleofC1toC2willamplifythevalueofVBE1-VBE2whiletheswitchattheoutputendclosingwiththeoutputvoltageVbg.
Fig.
1CapacitanceRatioBandgapReference3.
HalfaperiodWorkingmechanismCapacitanceratiobandgapreferencedividestheworkingtimeintotwoparts.
Theoperationalamplifierisusedasabufferinthefirstphasewhilesamplingthedifferenceofvoltage.
Accordingtotheprincipleofchargeconservation,thecircuitmultiplythedifferenceofvoltage.
Thestableoutputreferencevoltageiscomposedofthenegativetemperaturecoefficientofthevoltageandthemagnifiedpositivetemperaturecoefficientofthevoltage.
Powerdissipationoftheoperationalamplifieristhemainsourceinthebandgapreference.
Auniversalmethodoflow-powerdesignistoreducethepowerconsumption.
Reducingtheworkingtimeisalsoaneffectivewaytodesignalowpowerbandgapreference.
Theoperationalamplifierinthecapacitanceratiobandgapreferencedoesn'tneedtoworkinthefirstphasewithoutlossofchargeinthesamplingcapacitor.
Andtheoperationalamplifierinthebandgapreferenceworksinclosedloop,exportingthestableoutputvoltageasreferencevoltagedirectlyinthesecondphase.
Thispapersavesthepowerdissipationoftheoperationalamplifierinthefirstphasewithclosedoperationalamplifier.
Bottomplatesamplingtechnique,replacingtheclosedoperationalamplifierusedasabuffer,hasbeenusedinthedesignforsavingthechargeatthenegativeport.
Afteroptimizingthestructure,showedinFig.
1forlowerpowerdissipation,enablesignalEN_Phase2hasbeenaddedtotheoperationalamplifier,asFig.
2.
ThechargeinthecapacitanceC1transferstothecapacitanceC2inthesecondphasewiththeopeningoperationalamplifier.
Forthetimebeing,theoutputendofoperationalamplifierlinkstotheoutputendofthecircuitwhentheoutputvoltageoftheoperationalamplifierbecomesthereferencevoltageVbg.
Vbg=VBE1+nVBE.
(1)Fig.
2Half-periodCapacitorRatioBandgapReferencePhase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgPhase1Phase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgEN_Phase2Theoperationalamplifierinthebandgapreferenceadoptsthemechanismofhalfcycleworktimewhichcanreducethepowerconsumptionavailably.
Afterturningontheoperationalamplifier,thecircuitchargetheparasiticcapacitance,whichdecreasesthesettlingtimeoftheoutputvoltagewiththehalfaperiodworkingmechanism.
Sothehalfaperiodworkingmechanismneedsfasteroperationalamplifierwhichwillincreasethepowerconsumptionofthecircuit.
Apeakvalueoftheoutputvoltagewillbeproducedbecauseofnon-overlapclock,whichinfluencestheaccuracyofthebandgapreference.
AsshownasFig.
3,theenablesignalEN_Phase2hasbeenoptimizedtoresolvetheproblemoftheparasiticcapacitance.
Ensuringtheparasiticcapacitancecharged,theenablesignalEN_Phase2Fwillbeenabledadvanced.
Fig.
3OptimizedHalf-periodCapacitorRatioBandgapReference4.
SimulationExperimentsandAnalysisConsideringthecurrentapplyingtotheloadoutsideandtheloadcapacitanceinside,thespeedoftheclockshouldbechosen.
Theparasiticcapacitancesshouldreachthebalancedstatebeforetheoperationalamplifierworkingintheclosedloop.
Aheadofthesecondphase,theoperationalamplifierhasbeenenabledtoensurestableoutputvoltagewhilethecapacitanceratiomultipliesthevoltage.
Inlogic,thefallingedgeoftheEN_Phase2FissynchronizedwiththerisingedgeofthePhase2but,actually,thefallingedgeoftheEN_Phase2Fenablestheoperationalamplifierinadvance.
ThetimeinadvanceofEN_Phase2Fcanbedecidedconsideringthevalueoftheparasiticcapacitance.
Inthispaper,theratioofcapacitancebetweenC1andC2iselectedas4,aftertakingareaofthechip,powerconsumedbygeneratingtheVBE1andVBE2andthenoisecharacterofthecapacitance.
Thetemperaturecharacteristicofthecapacitanceratiobandgapreferencefrom-20℃to80℃hasbeenshownasFig.
4withthevarietyof7mVattheendofthecircuit.
Theoutputvoltagecanbestableat10.
75uswithsteadypowersupply,asshowninFig.
5.
Fig.
4SimulationResultofTemperaturecharacteristicFig.
5SimulationResultoftransientresponseTable1showsthesimulationresult.
Aftercomparingthisworkwithothers,thepowerdissipationofthecircuitissuperiortoothers.
Table1AnalysisofSimulationResultPerformanceParameterThiswork[2][3]SupplyCurrent(uA)19.
8uA24.
6uA50uATemperatureCoefficient(ppm/℃)21ppm/℃13.
29ppm/℃15ppm/℃Phase1Phase2Phase2Phase2C1C2CLVBE1VBE2VbgEN_Phase2F5.
SummaryAfteranalyzinganddiscussingtheapplicationanddevelopmentdirectionofbandgapreference,thispaperpresentsalowpowerratio-capacitancebandgapreferencecircuit,whichcanreducepowerdissipation.
ThecircuitadoptscascadeOp-ampwhichcanimproveresponsespeedandaccuracyofthecircuit.
Simulationresultshowsthatthetotalpowerdissipationis19.
8uAat3.
3V,low-frequencynoiseachieves3.
9uV/√Hzandthetemperaturecoefficientofthecircuitis21ppm/℃.
References[1].
ZhouZK,ShiY,HuangZ,etal.
A1.
6-V25-A5-ppm/CCurvature-CompensatedBandgapReference[J].
Circuits&SystemsIRegularPapersIEEETransactionson,Vol.
59(2012)No.
2,p.
677-684.
[2].
ChenPY,ChangSJ,HuangCM,etal.
A1-VCDSbandgapreferencewithouton-chipresistors[C],CircuitsandSystems(APCCAS),2012,p.
160-163.
[3].
YingC,DeCockW,SteyaertM,etal.
A4.
5MGyTID-TolerantCMOSBandgapReferenceCircuitUsingaDynamicBaseLeakageCompensationTechnique[J].
NuclearScienceIEEETransactionson,Vol.
60(2013)No.
4,p.
2819-2824.
[4].
Martinez-NietoA,Sanz-PascualMT,Rosales-QuinteroP,etal.
Abandgapvoltagereferencein0.
18mCMOStechnology[C]//CircuitsandSystems(MWSCAS),2013,p.
97-100.
[5].
VergineT,MichelisS,DeMatteisM,etal.
A65nmCMOStechnologyradiation-hardbandgapreferencecircuit[C]//MicroelectronicsandElectronics(PRIME),2014,p.
1-4.
[6].
MaB,YuF.
ANovel1.
2–V4.
5-ppm/°CCurvature-CompensatedCMOSBandgapReference[J].
Circuits&SystemsIRegularPapersIEEETransactionson,Vol.
61(2014)No.
4,p.
1026-1035.
EdgeNat 新年开通优惠 - 韩国独立服务器原生IP地址CN2线路七折优惠
EdgeNat 商家在之前也有分享过几次活动，主要提供香港和韩国的VPS主机，分别在沙田和首尔LG机房，服务器均为自营硬件，电信CN2线路，移动联通BGP直连，其中VPS主机基于KVM架构，宿主机采用四路E5处理器、raid10+BBU固态硬盘！最高可以提供500Gbps DDoS防御。这次开年活动中有提供七折优惠的韩国独立服务器，原生IP地址CN2线路。第一、优惠券活动EdgeNat优惠码（限月...
妮妮云(100元/月)阿里云香港BGP专线 2核 4G
妮妮云的来历妮妮云是 789 陈总 张总 三方共同投资建立的网站 本着“良心 便宜 稳定”的初衷 为小白用户避免被坑妮妮云的市场定位妮妮云主要代理市场稳定速度的云服务器产品，避免新手购买云服务器的时候众多商家不知道如何选择，妮妮云就帮你选择好了产品，无需承担购买风险，不用担心出现被跑路 被诈骗的情况。妮妮云的售后保证妮妮云退款 通过于合作商的友好协商，云服务器提供2天内全额退款，超过2天不退款 物...
hosteons：10Gbps带宽，免费Windows授权，自定义上传ISO，VPS低至$21/年，可选洛杉矶达拉斯纽约
hosteons当前对美国洛杉矶、达拉斯、纽约数据中心的VPS进行特别的促销活动：（1）免费从1Gbps升级到10Gbps带宽，（2）Free Blesta License授权，（3）Windows server 2019授权，要求从2G内存起，而且是年付。 官方网站：https://www.hosteons.com 使用优惠码：zhujicepingEDDB10G，可以获得： 免费升级10...
ykt 178zx com cn为你推荐
-
无线路由器限速设置无线路由器怎么设置限速打开网页出现错误显示网页上错误，打不开网页怎么办公章制作word里如何制作公章？依赖注入什么是侵入性?还有依赖注入?伪静态什么是伪静态伪静态有何作用腾讯文章腾讯罗剑楠是何许人也？godaddyGodaddy域名怎么接受xp系统停止服务XP系统停止服务后怎么办？安装迅雷看看播放器迅雷看看不能播放，说我尚未安装迅雷看看播放器免费qq空间装扮有办法免费装扮QQ空间吗？？