2024年4月16日发(作者：夏侯思宸)
ReferenceDesign
SLVA411–April2010
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,
High-Efficiency,Integrated5-OutputPMIC
Thisdesignwascreatedtohelpthosedesignersdesiringanoptimizedandhighlyintegratedpower
powermanagementintegrated
circuit(PMIC)topoweryourprocessorcangreatlyreducethenumberofcomponentsandoverallsizeof
yourdesign.
1Introduction
Theinputvoltagerangeofthesedesignsis3.6Vto6.3V,whichallowsforoperationusingadc,USB,or
650732hasthreedc/dcstep-downconverters,twoLDOs,batterycharger,
touchscreenInterface,andawhiteLEDboostconverter.
TheAM3505andAM3517processorscanbeoperatedwithVDDSHVconfiguredfor3.3-Voperationas
ingontheuser'sdesign,differentrequirements(options)areavailable
AM3505andAM3517datamanualfordetails.
Thisdocumentproposesonepowersolutioneachfor3.3-Voperationandfor1.8-Voperationbasedon
theTPS650732.
2TPS650732-BasedDesignFeatures
•
•
3.6-Vto6.3-VInputVoltageRange
Charger/PowerPathManagement:
–2-AOutputCurrentonthePowerPath
–LinearCharger;1.5-AMaximumChargeCurrent
–100-mA/500-mA/800-mA/1300-mACurrentLimitFromUSBInput
–ThermalRegulation,SafetyTimers
–TemperatureSenseInput
ThreeStep-DownConverters:
–2.25-MHz,Fixed-FrequencyOperationforSmallComponentSize
–PowerSaveModeatLightLoadCurrent
–Typical19µAQuiescentperConverter
–100%DutyCycleforLowestDropout
TwoLDOs(200-mAOutputCurrentEach)
–Fixed-OutputVoltage
–DynamicVoltageScalingonLDO2
–20-µAQuiescentCurrent
WLEDBoostConverter:
–InternalDimmingUsingI
2
C
–Upto2×10LEDs
–Upto25mAperStringWithInternalCurrentSink
I
2
CInterface
10-BitA/DConverter
TouchScreenInterface
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,High-Efficiency,
Integrated5-OutputPMIC
•
•
•
•
•
•
SLVA411–April2010
SubmitDocumentationFeedback
1
PowerRequirements
3PowerRequirements
ThepowerrequirementsfortheAM3517/05devicesarelistedinTable1.
Formoreinformationandotherreferencedesigns,/processorpower.
3517/05PowerRequirements
PinName
CoreVDD_CORE
VDDS
VDDSHV
VDDS_SRAM_CORE_BG,
VDDS_SRAM_MPU,
VDDSOSC
VDDS_DPLL_PER_CORE,
VDDS_DPLL_MPU_USBHOST
VDDA1P8V_USBPHY,
VDDA_DAC
VDDA3P3V_USBPHY
(1)
Voltage
(V)
1.2
1.8V
(1)
Imax
(mA)
1500
400
600
200
50
Tolerance
±3%
±5%
±5%
±5%
±5%
Sequencing
Order
4
1
2
3
Timing
Delay
Comments
24-mVripple(pk-pk)atanyfrequency
50-mVripple(pk-pk)
MaybecombinedwithVDDS
if1.8Visused
3.3/1.8
1.8V
1.8
—
5
VDDA_DAC:
●0-100kHz<30mVp-p
●>100kHzDecreases20dB/dec.
Ex:at1MHzthemaxis3mVp-p.
1.8
3.3
115
10
±5%
±5%
6
6
For1.8-Voperation,VDDS18,VDDS_SRAM_CORE_BG,VDDS_SRAM_MPU,VDDSOSC,andVDDSHVcanbegroupedand
powereduptogether
2
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,High-Efficiency,
Integrated5-OutputPMIC
SLVA411–April2010
SubmitDocumentationFeedback
2024年4月16日发(作者：夏侯思宸)
ReferenceDesign
SLVA411–April2010
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,
High-Efficiency,Integrated5-OutputPMIC
Thisdesignwascreatedtohelpthosedesignersdesiringanoptimizedandhighlyintegratedpower
powermanagementintegrated
circuit(PMIC)topoweryourprocessorcangreatlyreducethenumberofcomponentsandoverallsizeof
yourdesign.
1Introduction
Theinputvoltagerangeofthesedesignsis3.6Vto6.3V,whichallowsforoperationusingadc,USB,or
650732hasthreedc/dcstep-downconverters,twoLDOs,batterycharger,
touchscreenInterface,andawhiteLEDboostconverter.
TheAM3505andAM3517processorscanbeoperatedwithVDDSHVconfiguredfor3.3-Voperationas
ingontheuser'sdesign,differentrequirements(options)areavailable
AM3505andAM3517datamanualfordetails.
Thisdocumentproposesonepowersolutioneachfor3.3-Voperationandfor1.8-Voperationbasedon
theTPS650732.
2TPS650732-BasedDesignFeatures
•
•
3.6-Vto6.3-VInputVoltageRange
Charger/PowerPathManagement:
–2-AOutputCurrentonthePowerPath
–LinearCharger;1.5-AMaximumChargeCurrent
–100-mA/500-mA/800-mA/1300-mACurrentLimitFromUSBInput
–ThermalRegulation,SafetyTimers
–TemperatureSenseInput
ThreeStep-DownConverters:
–2.25-MHz,Fixed-FrequencyOperationforSmallComponentSize
–PowerSaveModeatLightLoadCurrent
–Typical19µAQuiescentperConverter
–100%DutyCycleforLowestDropout
TwoLDOs(200-mAOutputCurrentEach)
–Fixed-OutputVoltage
–DynamicVoltageScalingonLDO2
–20-µAQuiescentCurrent
WLEDBoostConverter:
–InternalDimmingUsingI
2
C
–Upto2×10LEDs
–Upto25mAperStringWithInternalCurrentSink
I
2
CInterface
10-BitA/DConverter
TouchScreenInterface
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,High-Efficiency,
Integrated5-OutputPMIC
•
•
•
•
•
•
SLVA411–April2010
SubmitDocumentationFeedback
1
PowerRequirements
3PowerRequirements
ThepowerrequirementsfortheAM3517/05devicesarelistedinTable1.
Formoreinformationandotherreferencedesigns,/processorpower.
3517/05PowerRequirements
PinName
CoreVDD_CORE
VDDS
VDDSHV
VDDS_SRAM_CORE_BG,
VDDS_SRAM_MPU,
VDDSOSC
VDDS_DPLL_PER_CORE,
VDDS_DPLL_MPU_USBHOST
VDDA1P8V_USBPHY,
VDDA_DAC
VDDA3P3V_USBPHY
(1)
Voltage
(V)
1.2
1.8V
(1)
Imax
(mA)
1500
400
600
200
50
Tolerance
±3%
±5%
±5%
±5%
±5%
Sequencing
Order
4
1
2
3
Timing
Delay
Comments
24-mVripple(pk-pk)atanyfrequency
50-mVripple(pk-pk)
MaybecombinedwithVDDS
if1.8Visused
3.3/1.8
1.8V
1.8
—
5
VDDA_DAC:
●0-100kHz<30mVp-p
●>100kHzDecreases20dB/dec.
Ex:at1MHzthemaxis3mVp-p.
1.8
3.3
115
10
±5%
±5%
6
6
For1.8-Voperation,VDDS18,VDDS_SRAM_CORE_BG,VDDS_SRAM_MPU,VDDSOSC,andVDDSHVcanbegroupedand
powereduptogether
2
AM3517/05PowerReferenceDesign3.6-Vto6.3-VInput,High-Efficiency,
Integrated5-OutputPMIC
SLVA411–April2010
SubmitDocumentationFeedback