ISL6333 데이터 시트보기 (PDF) - Intersil

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ISL6333

4-Phase Buck PWM Controller

Intersil 

ISL6333, ISL6333A, ISL6333B, ISL6333C

Block Diagram - ISL6333C

VSEN

RGND

VDIFF

APA

OPEN SENSE

LINE PREVENTION

x1

UNDERVOLTAGE

DETECTION

LOGIC

OVERVOLTAGE

DETECTION

LOGIC

I_AVG

I_TRIP

OCP

VR_RDY SS

SOFT-START

AND

FAULT LOGIC

ADAPTIVE PHASE

ALLIGNMENT

CIRCUITRY

EN

0.85V

POWER-ON

RESET

LOW POWER

STATE

CIRCUITRY

MOSFET

DRIVER

FS

VID7

VID6

VID5

VID4

VID3

VID2

VID1

VID0

DVC

REF

FB

COMP

OFS

DYNAMIC

VID

D/A

x2

OFFSET

1kΩ

E/A

I_AVG

IMON

VOCP

OCP

OCP

RGND

CLOCK AND

MODULATOR

WAVEFORM

GENERATOR

APP AND APA PWM1

MODULATOR

APP AND APA PWM2

MODULATOR

APP AND APA PWM3

MODULATOR

I_AVG

1

N

CHANNEL

CURRENT

BALANCE

AND

CURRENT

LIMIT

∑

+

++

GND

MOSFET

DRIVER

MOSFET

DRIVER

CHANNEL

DETECT

CH3

CURRENT

SENSE

RISEN3

CH2

CURRENT

SENSE

RISEN2

CH1

CURRENT

SENSE

RISEN1

VCC

PVCC1

PVCC3

PUVCC

PVCC2

PSI#

CPURST_N

BOOT1

UGATE1

PHASE1

LGATE1

BOOT2

UGATE2

PHASE2

LGATE2

BOOT3

UGATE3

PHASE3

LGATE3

ISEN3-

ISEN3+

ISEN2-

ISEN2+

RSET

ISEN1+

ISEN1-

9

FN6520.3

October 8, 2010

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