MBI6020

Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]1MBI6020为针对RGBcluster应LED流驱图1过时A-Token寻来数传稳将为计压降项VDD压项..计CKI频率项CKI时项..产项/时压击连计产了带..测试应VLED压应图1.RGBcluster计图2为MBI6020应路图图2.MBI6020应路图Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]21.压降项Cluster串时为线产压降cluster不图3为压降图过cluster许压降压降VDS压转压(LED亮度不)颗ICVDD不(传不)图3.压降图简单较给DC/DCconverter12V24VDC/DCconverter降压给VLED图4VLED压计VLED,MIN.=(VF,MAX.xn)+VDS..................................................................................................(1)图4.VLED压计图VF,MAX.LED顺压nLED串颗数/OUTn压为17VLEDVLED过17V将对IC伤VLED压应请16VLED7V12V给DC/DCconverter,DC/DCconverter将12V降压7V给VLED为VDD压为5V颗LDO将7V降5V给VDD图5选择LDO时Inputvoltage压DropoutVoltageMaximumjunctiontemperature则将MBI6020VDD压稳度若DC/DCconverter压5V则VDD须4.7uF10uF0.1uF来LED切换图6Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]3图5.DC/DCconverter图图6.图DC/DCconverter应来压稳若绕线则绕线须图7Cd应压来调图8为图9为不图7.图8.图9.不PCBlayout时议0(R8)Bead开DC/DCconverterMBI6020来降DC/DCconverterswitching路VDDVDDConfidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]压项MBI6020VDD若不将IC内逻辑断不图10VDD为5V时VIH/VIL断为3.65V1.4VVDD为4V时VIH/VIL断2.92V1.12V断降将讯现压降项图10.VDD不图3.项当cluster串颗线1颗压DC/DCconverter压须针对线规计压降将图11AWG26导(MaximumConductorResistance)为152Ω/km谓1km传线152Ω40mA则串10颗将产2.08V压降串颗数图11.图4.线选择项当讯时讯产cross-talk现图12为了现讯GND将讯开图13对绞线cross-talk请线选择线时为线径宽杂传议AWG26线200传线额流不VIN流1为线规当选择AWG26线时流须3.5A则线过许流热Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]5图12.cross-talk现图13.线1.线规5.讯质量项图14为讯质量图15~17为错误讯质量计路时须预留(R1,2,3,4)为图15组线不(R1,2,3,4)不应须选择过(over-shoot)/(under-shoot)压R3,4时R1,2,开路别CKO/SDO降时不过则过传败若R1,2时R3,40别须0.28×VDD为则将传败讯cross-talk现过则须讯GND将讯开请线选择项CKISDIConfidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]6图14.讯质量图15.错误讯质量(不)图16.错误讯质量(过/压过)图17.错误讯质量(cross-talk过)图18.预留CKISDICKISDICKISDICKISDIConfidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]76.过度应力项积产级ESD计为让cluster更过度应力ElectricalOverstressEOS力EOS组图19TVS1,2,3选择态压(TransientVoltageSuppressorTVS)时a.压(VRWM)5Vb.压(VC)5Vc.CKO/SDO/降时讯传频率off-state(Cj)议为3pF图TVS2,3若VDD则不图TVS1d.TVS应MBI6020便EOS进路EOS图19.过度应力组7.LED顺压项过VLED让IC不热对LED顺压(VF)筛选LED顺压8.流项MBI6020(R5,6,7)来调LED流(IOUT)当LED流利列Rext5,6,7Rext5,6,7=(0.41V/IOUT).................................................................................................................(2)Rext5,6,7ICRext压议误(tolerance)为1%来较流Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]89.流项当当Rext稳流则IC/OUTA,B,C压(VDS)维转压(KneeVoltage)为了压降ICICVDS压议转压(KneeVoltage)+0.2V图20图21为MBI6020不RextLED流压关图不流VDS压图20.VDD为5V时IOUTVDS关图21.VDD为3.3V时IOUTVDS关Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]9讯计1.CKI频率项MBI6020CKI频率200kHzFPGA读数时CKI不讯度较MCU为虑80514clockscycles/machine(4T)SPIMCU2.CKI时项MBI6020Time-out来数Time-out利内荡检测CKI数当CKI时过Time-out时MBI6020略数阶数为读储时较现CKI读时不过CKITime-out数图22Time-outCKI数选择4(default为95~172CKIcycle)CF2[1:0]选择CKI数当选择default时当CKI过95CKI数时MBI6020略数CKI172CKI数MBI6020略数图22.CKI时图2.4CKItime-out数图23为CKI时过例当Time-out为11(95~172CKIcycle)CKI为1usCKI96us则CKI时满Time-outMBI6020略数CKI过172us时MBI6020将略资料图23.CKI时过例Confidential____________________MBI6020ApplicationNoteV1.00-CN____________________©Macroblock,Inc.2009Floor6-4,No.18,Pu-TingRd.,Hsinchu,Taiwan30077,ROC.TEL:[phone],FAX:[phone]E-mail:[e-mail]103.讯MBI6020讯SPI-like利CKI缘来SDI图24图24.SPI-like图讯应该时数a.时时为CKISDI时pulllow(Td0)时为了让MBI6020阶数更时(Tframe)时须满Td0TframeTD0................................................................................................................(3)Td0CKItime-outperiod.......................................................................................................(4)TD0为传数时16-bitsTD0=TCKIx48x(N+1)10-bitsTD0=TCKI