ISL6312 데이터 시트보기 (PDF) - Intersil

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ISL6312

Four-Phase Buck PWM Controller with Integrated MOSFET Drivers for Intel VR10, VR11, and AMD Applications

Intersil 

ISL6312

Block Diagram

VSEN

RGND

VDIFF

OPEN SENSE

LINE PREVENTION

x1

UNDERVOLTAGE

DETECTION

LOGIC

PGOOD SS

SOFT-START

AND

FAULT LOGIC

OVERVOLTAGE

DETECTION

LOGIC

0.2V

EN

0.85V

POWER-ON

RESET

MOSFET

DRIVER

VCC

PVCC1_2

BOOT1

UGATE1

PHASE1

LGATE1

OVPSEL

VRSEL

MODE/DAC

SELECT

VID7

VID6

VID5

VID4

VID3

VID2

VID1

VID0

REF

FB

COMP

OFS

IDROOP

DYNAMIC

VID

D/A

OFFSET

LOAD APPLY

TRANSIENT

ENHANCEMENT

CLOCK AND

MODULATOR

WAVEFORM

GENERATOR

OC

I_TRIP

E/A

∑

∑

∑

∑

PWM1

PWM2

PWM3

PWM4

I_AVG

CHANNEL

CURRENT

BALANCE

I_AVG 1

N

∑

CH1

CURRENT

SENSE

CH2

CURRENT

SENSE

CH3

CURRENT

SENSE

CH4

CURRENT

SENSE

MOSFET

DRIVER

CHANNEL

DETECT

PH4 POR/

DETECT

MOSFET

DRIVER

PWM4

SIGNAL

LOGIC

DRSEL

FS

BOOT2

UGATE2

PHASE2

LGATE2

EN_PH4

PVCC3

BOOT3

UGATE3

PHASE3

LGATE3

PWM4

ISEN1- ISEN1+ ISEN2- ISEN2+ ISEN3- ISEN3+ ISEN4- ISEN4+

3

GND

FN9289.5

February 25, 2010

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