HIP6301.docx

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