(Preliminary)
ProductOverviewPV3204
Digital Dual-Phase Synchronous Buck Controller with Auto-Control®,
andSMBus™and3-BitPVIDInterfaces
FEATURES
GENERALDESCRIPTION
• Auto-ControlReal-TimeAdaptiveLoopCompensation
• 3-BitParallelVID(PVID)Interface
• SMBusInterfacewithPMBus™PowerSystem
ManagementProtocol
• 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%IOUTAccuracyOver
Temperature
− Automatic,ConfigurablePhaseAdd/Drop
− ProgrammableFrequency(375kHzto1MHz)
− ProgrammableVOUT,Margining,&Sequencing
− ProgrammablePrecisionDutyCycleLimit
− TemperatureCompensatedPhaseCurrentSense&
Matching
− InterleavedPhaseOperationwithPhaseCurrent
Sharing
− PowerGood&RemotePowerDown
• InternalAnti-FuseBasedNVM
− -40°Cto125°C(20yeardataretentionrating)
• 32-Lead5mmx5mmQFNpackage(RoHS/PbF)
The PV3204 is a dual phase digital synchronous buck
controllerwithadaptiveloopcompensation,forpoint-of-load
(POL)applications.Theoutputcansupply0.6Vto5.5V,and
can be configured and controlled via PMBus or through
programming stored in the non-volatile memory (NVM). In
addition to the SMBus interface, PV3204 provides a 3-bit
parallelVIDinterfacewithamappingfrom0.85Vto1.0Vin
25mVsteps,and1.05V.
This controller may be used in single or dual phase mode.
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. PV3204 uses Powervation’s
proprietaryadaptivedigitalcontrolloop,Auto-Control,which
adapts on a cycle-by-cycle basis, and provides active loop
compensation to stabilize the control loop as the phases are
addedandremoved.
The digital functionality of this PMBus power converter
controllerallowssystemtelemetry(remotemeasurementand
reporting) of current, voltage, and temperature information.
Additionally,tomaximizesystemperformanceandreliability,
the IC provides temperature correction/compensation of
several parameters. PV3204 is a fully protected DC/DC
solution that utilizes analog and digital functionality to
maximizeprotectionofthesystem.
APPLICATIONS
• ASIC,FPGA,Microprocessor,Graphics,andPOL
• PCHPower
• Networking,Communications,Storage,Server,Computing
PV3204v0.18Copyright©2015ROHM
(Preliminary)
ProductOverviewPV3204
PV3204
3.3 V
VDD33D
VINSEN
1 µF
1 kΩ
10 kΩ
VIN
VDD33A
1Ω
100 nF
100 nF
1V8
100 nF
VIN
BST
100 nF
SDA
SCL
PMBus
EN
PWM SW
LG
1 kΩ
CTRL
VSENP
VSENN
100 nF
VOUT
1 kΩ
COUT
VIN
VCOMP
VID1
100 nF
VID2
PG
CONFIG
ADDR1
DMD2
PWM2
ADDR2
RA1
RS
GND
ISEN1P
VID0
RC
LOUT
HG
ISEN1N
TSENP
TSENN
Parallel VID
DMD1
PWM1
CIN
LOUT
EN
PWM SW
LG
1 kΩ
RA2
VIN
BST
HG
RS
GND
ISEN2P
DGND
100 nF
ISEN2N
AGND
1 kΩ
PMBus Address
Configuration
PreliminaryReferenceCircuitwithOptionalComponentsforVOUT0.85V~1.05V
VSENP 26
VCOMP 25
VINSEN 27
AGND 29
VDD33A 28
1V8 31
SCL 2
VDD33D 30
DGND 32
VID2 1
AGND
(Exposed Ground Paddle)
24 VSENN
23 ISEN1P
VID2
VID1
VID0
PVIDVOUT
0
0
0
0.85V
SDA 3
22 ISEN1N
1
0
0
0.875V
VID0 4
21 ISEN2P
0
0
1
0.90V
20 ISEN2N
0.925V
CTRL 5
PV3204
N/C 6
19 TSENN
1
0
1
PG 7
18 CONFIG
0
1
0
0.95V
17 ADDR2
1
1
0
0.975V
0
1
1
1.00V
1
1
1
1.05V
VID1 8
PreliminaryPinConfiguration(TopView)
PV3204v0.18Copyright©2015ROHM
3-BitPVIDDecodeTable