ProductOverviewPV3201
VR12.0/VR12.5 Digital Dual-Phase Synchronous Buck Controller with
Auto-Control®&SMBus™/PMBus™
FEATURES
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GENERALDESCRIPTION
ThePV3201isasingleoutput,dualorsinglephasedigitalsynchronous
buck controller with adaptive loop compensation, for point-of-load
(POL) applications. The PV3201 complies with the Serial VID (SVID)
portion of Intel’s VR12 specification in order to support Intel-based
memory, graphics and similar applications. Through SVID, the CPU can
dynamicallycontroltheoutputvoltage,slewrates,powerstates,aswell
asmonitortheVRcontrollerfortelemetrypurposes.InparalleltoSVID,
thePV3201alsosupportsasetofPMBuscommands,allowingaBMCin
aserverapplicationtoconfigure,controlandmonitortheVRcontroller.
Auto-ControlReal-TimeAdaptiveLoopCompensation
IntelCompliantSerialVID(SVID)Interface
SMBusInterfacewithPMBusPowerSystemManagementProtocol
PrecisionMeasurement&TelemetryReporting:VOUT,IOUT,VIN,EOUT,
Temperature,DutyCycle,fSW
ProgrammableProtection&Warning
OutputOVP,OCP,SCP,LOS
InputUVLO,OVLO
ExternalOTP,UTWarning,&OTWarning
Single-PinConfigurationwithEightProfileTables
PowerManagementandConversion
VOUTRange:0.6Vto1.52V
±0.5%VOUT,±1.5%VIN,&±3%IOUTAccuracyOverTemperature
ConfigurablePhaseAdd/Drop(viaPS1Command)
RemotePowerDown
ProgrammableFrequency(375kHzto1MHz)
ProgrammableVOUT
FrequencySynchronization&PhaseAlignment
ProgrammablePrecisionDutyCycleLimit
TemperatureCompensatedPhaseCurrentSense&Matching
InterleavedPhaseOperationwithPhaseCurrentSharing
InternalAnti-FuseBasedNVM
-40°Cto125°C(20yeardataretentionrating)
32-Lead5mmx5mmQFNpackage(RoHS/PbF)
When used in dual phase mode, phases may be added or removed as
the load varies, 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. PV3201 uses
Powervation’s proprietary adaptive digital control loop, Auto-Control,
which adapts on a cycle-by-cycle basis, and provides active loop
compensationtostabilizethecontrolloopasthephasesareaddedand
removed.
The digital functionality of this VR controller allows system telemetry
(remote measurement and reporting) of current, voltage, and
temperature information through its serial interfaces. Additionally, to
maximize system performance and reliability, the IC provides
temperaturecorrection/compensationofseveralparameters.PV3201is
a fully protected DC/DC solution that utilizes analog and digital
functionalitytomaximizesystemprotection.
APPLICATIONS
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IntelSVID-CompliantApplications
DDRMemoryPower
ASIC,FPGA,Microprocessor,&Graphics
Networking,Communications,Storage,Server,&Computing
PV3201
3.3 V
VDD33D
VDD33A
VCORE
1Ω
100 nF
100 nF
100 nF
VINSEN
1 µF
DMD1
PWM1
SDA
SCL
10 kΩ
SYNC
SVID
VSENP
VSENN
100 nF
VOUT
1 kΩ
COUT
VIN
VCOMP
DMD2
EN
PWM2
PWM SW
LG
1 kΩ
RB
ISEN2P
DGND
VIN
BST
100 nF
VR_HOT
VR_READY
CONFIG
VBOOT
RC
RS
ISEN1P
ISEN1N
TSENP
TSENN
VR_CLK
VR_DATA
VR_ALRT#
VR_ENABLE
Differential Temp Sense
(for DCR calibration)
CIN
LOUT
GND
1 kΩ
Frequency Sync
VIN
VIN
BST
EN
HG
PWM SW
LG
100 nF
PMBus
1 kΩ
AGND
HG
LOUT
RS
GND
100 nF
ISEN2N
1 kΩ
Single Resistor
Settings
0.6V≤VOUT≤1.52VReferenceCircuitwithOptionalComponents
PV3201v1.1Copyright©2015ROHM