ProductOverviewPV3012
Digital Dual-Phase Synchronous Buck Controller with Auto-Control® &
SMBus™/PMBus™
FEATURES
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GENERALDESCRIPTION
Auto-ControlReal-TimeAdaptiveLoopCompensation
SMBusInterfacewithPMBusPowerSystemManagementProtocol
PrecisionMeasurement&TelemetryReporting:VOUT,IOUT,VIN,EOUT,
Temperature,DutyCycle,fSW
ProgrammableProtection&Warning
OutputOVP,OCP,SCP,LOS,UVWarning
InputUVLO,OVLO
Internal&ExternalOTP,UTWarning,&OTWarning
Single-PinConfigurationwithEightProfileTables
PowerManagementandConversion
VOUTRange:0.6Vto5.5V
±0.5%VOUT,±1.5%VIN,&±3%IOUTAccuracyOverTemperature
Automatic,ConfigurablePhaseAdd/Drop
DigitalStressShare®(DSS)BusforMulti-POL&>2ɸOperation
ProgrammableFrequency(375kHzto1MHz)
ProgrammableVOUT,VoltageTracking,Margining,&Sequencing
FrequencySynchronization&PhaseAlignment
ProgrammablePrecisionDutyCycleLimit
TemperatureCompensatedPhaseCurrentSense&Matching
InterleavedPhaseOperationwithPhaseCurrentSharing
PowerGood,SystemGood,&RemotePowerDown
InternalAnti-FuseBasedNVM
-40°Cto125°C(20yeardataretentionrating)
32-Lead5mmx5mmQFNpackage(RoHS/PbF)
APPLICATIONS
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ASIC,FPGA,Microprocessor,Graphics,andPOL
DDRMemoryPower
Networking,Communications,Storage,Server,Computing
AdvancedPowerModules&GeneralPurposePOL
The PV3012 is a dual phase digital synchronous buck controller with
adaptive loop compensation, for point-of-load (POL) applications. The
outputcansupply0.6Vto5.5V,andcanbeconfiguredandcontrolled
viaPMBus,withasingleresistor,orthroughprogrammingstoredinthe
non-volatilememory(NVM).
Thiscontrollermaybeusedinsingleordualphasemode.Whenusedin
dualphasemode,phasesmaybeaddedorremovedastheloadvaries,
so that efficiency is maximized over the load range. Additionally, the
outputs of the phases are interleaved so that the effective switching
frequency at the output is doubled, and with Powervation’s Digital
Stress Share (DSS) and PLL synchronization, multiple PV3012 devices
maybeusedinparalleltoincreasethenumberofphasessupportingthe
application’s load. PV3012 uses Powervation’s proprietary adaptive
digital control loop, Auto-Control, which adapts on a cycle-by-cycle
basis, and provides active loop compensation to stabilize the control
loopasthephasesareaddedandremoved.
ThedigitalfunctionalityofthisPMBuspowerconvertercontrollerallows
system telemetry (remote measurement and reporting) of current,
voltage,andtemperatureinformation.Additionally,tomaximizesystem
performance and reliability, the IC provides temperature
correction/compensation of several parameters. PV3012 is a fully
protectedDC/DCsolutionthatutilizesanaloganddigitalfunctionalityto
maximizeprotectionofthesystem.
PV3012
3.3 V
VDD33D
VINSEN
1 µF
1 kΩ
10 kΩ
VIN
VDD33A
1Ω
100 nF
100 nF
VCORE
100 nF
VIN
BST
100 nF
DMD1
PWM1
SDA
SCL
SALRT
CTRL
PMBus
1 kΩ
Differential Temp Sense
(for DCR calibration)
Reporting
VTREF
VSENP
100 pF
RC
RS1
RA1
Single Resist or
Settings
COUT
VIN
100 nF
DMD2
PWM2
1 kΩ
RA2
VIN
BST
EN
HG
PWM SW
LG
AGND
LOUT
RS
GND
ISEN2P
DGND
Set-Point
Tracking
VOUT
VCOMP
ADDR2
RT2
100 nF
1 kΩ
VSENN
VTRACK
CONFIG
VSET
ADDR1
RT1
RS
GND
ISEN1P
ISEN1N
DSS
SYNC
TSENP
TSENN
PG
SYSG
Current Sharing/Frequency Sync
CIN
LOUT
EN
HG
PWM SW
LG
100 nF
ISEN2N
1 kΩ
PMBus Address
Configuration
0.6V≤VOUT≤3.3VReferenceCircuitwithOptionalComponents
PV3012v1.2Copyright©2015ROHM