HIP6301.docx
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HIP6301.docx
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HIP6301
HIP6301
®
DataSheetJune2002FN4765.2
MicroprocessorCOREVoltageRegulator
Multi-PhaseBuckPWMController
TheHIP6301multi-phasePWMcontrolICtogetherwithitscompaniongatedrivers,theHIP6601B,HIP6602B,HIP6603BorHIP6604BandexternalMOSFETsprovidesaprecisionvoltageregulationsystemforadvancedmicroprocessors.Multiphasepowerconversionisamarkeddeparturefromearliersinglephaseconverterconfigurationspreviouslyemployedtosatisfytheeverincreasingcurrentdemandsofmodernmicroprocessors.Multi-phaseconvertors,bydistributingthepowerandloadcurrentresultsinsmallerandlowercosttransistorswithfewerinputandoutputcapacitors.Thesereductionsaccruefromthehighereffectiveconversionfrequencywithhigherfrequencyripplecurrentduetothephaseinterleavingprocessofthistopology.Forexample,athreephaseconvertoroperatingat350kHzwillhavearipplefrequencyof1.05MHz.Moreover,greaterconvertorbandwidthofthisdesignresultsinfasterresponsetoloadtransients.
OutstandingfeaturesofthiscontrollerICinclude
programmableVIDcodesfromthemicroprocessorthat
rangefrom1.100Vto1.850Vwithasystemaccuracyof
±1%.PullupcurrentsontheseVIDpinseliminatestheneed
n
forexternalpullupresistors.Inaddition“droop”
compensation,usedtoreducetheovershootorundershoot
i
oftheCOREvoltage,iseasilyprogrammedwithasingle
resistor.
h
AnotherfeatureofthiscontrollerICisthePGOODmonitor
circuitwhichisheldlowuntiltheCOREvoltageincreases,
duringitsSoft-Startsequence,towithin10%ofthe
programmedvoltage.Over-voltage,15%aboveprogrammed
.
COREvoltage,resultsintheconvertershuttingcdownand
turningthelowerMOSFETsONtoclampandprotectthe
microprocessor.Undervoltageisalsodetectedandresults
inPGOODlowiftheCOREvoltagefalls10%belowthe
programmedlevel.Over-currentprotectionreducesthe
w
regulatorcurrenttolessthan25%woftheprogrammedtrip
value.Thesefeaturesprovidemonitoringandprotectionfor
themicroprocessorandpowersystem.
w
Features
•
Multi-PhasePowerConversion
•
PrecisionChannelCurrentSharing
-LossLessCurrentSampling-UsesrDS(ON)
•PrecisionCOREVoltageRegulation
-±1%SystemAccuracyOverTemperature
•MicroprocessorVoltageIdentificationInput
-5-BitVIDInput
o
m
-1.100Vto1.850Vin25mVSteps
-Programmable“Droop”Voltage
c
•FastTransientRecoveryTime
•
.
OverCurrentProtection
•
AutomaticSelectionof2,3,or4PhaseOperation
x
•HighRippleFrequency,(ChannelFrequency)Times
i
.................100kHzto6MHz
NumberChannels
f
OrderingInformation
a
TEMP.(oC)
PACKAGE
PKG.NO.
PARTNUMBER
HIP6301CB
0to70
20LdSOIC
M20.3
HIP6301CB-T
20LdSOICTapeandReel
HIP6301EVAL1
EvaluationPlatform
Pinout
HIP6301(SOIC)
TOPVIEW
VID4
1
20
VCC
VID3
2
19
PGOOD
VID2
3
18
PWM4
VID1
4
17
ISEN4
VID0
5
16
ISEN1
COMP
6
15
PWM1
FB
7
14
PWM2
FS/DIS
8
13
ISEN2
GND
9
12
ISEN3
VSEN
10
11
PWM3
1
CAUTION:
Thesedevicesaresensitivetoelectrostaticdischarge;followproperICHandlingProcedures.
1-888-INTERSILor321-724-7143|Intersil(anddesign)isaregisteredtrademarkofIntersilAmericasInc.
Copyright©IntersilAmericasInc.2002.AllRightsReserved
HIP6301
BlockDiagram
PGOODVCC
POWER-ON
RESET(POR)
VSEN
+
THREE
UV
STATE
X0.9
-
OV
m
+
LATCH
CLOCKAND
S
SAWTOOTH
FS/EN
GENERATOR
o
+
∑
-
OVP
+
X1.15
-
PWM
c
PWM1
-
.
SOFT-
+
∑
+
START
ANDFAULT
-
i
PWM
PWM2
LOGIC
f
-
COMP
+
a
+
∑
PWM
VID0
-
PWM3
n
-
∑
VID1
VID2
D/A
i
+
+
PWM4
VID3
+
-
PWM
E/A
-
VID4
-
.
PHASE
FB
c
CURRENT
NUMBER
CHANNEL
DETECTOR
CORRECTION
w
I_TOT
ISEN1
+
w
+
ISEN2
∑+
+
ISEN3
OC
+
w
-
ISEN4
I_TRIP
GND
2
HIP6301
SimplifiedPowerSystemDiagram
SYNCHRONOUS
RECTIFIEDBUCK
VSEN
CHANNEL
PWM1
PWM2
SYNCHRONOUS
RECTIFIEDBUCK
CHANNEL
m
HIP6301
MICROPROCESSOR
PWM3
SYNCHRONOUS
RECTIFIEDBUCK
o
PWM4
CHANNEL
c
VID
SYNCHRONOUS
RECTIFIEDBUCK
.
CHANNEL
x
FunctionalPinDescription
i
converter.Pullingthispintogrounddisablestheconverter
threestatesthePWMoutputs.SeeFigure10.
f
VID4
1
20
VCC
GND(Pin9)
VID3
2
19
PGOOD
Biasandreferenceground.Allsignalsarereferencedtothis
VID2
3
18
PWM4
and
pin.
VID1
4
17
ISEN4
nVSEN(Pin10)
VID0
5
16
ISEN1
i
Powergoodmonitorinput.Connecttothemicroprocessor-
COMP
6
15
PWM1
h
COREvoltage.
FB
7
14
PWM2
FS/DIS
8
13
ISEN2
PWM1(Pin15),PWM2(Pin14),PWM3(Pin11)and
GND
9
12
ISEN3
PWM4(Pin18)
VSEN
10
11
PWM3
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