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производитель

ISL6566A

Three-Phase Buck PWM Controller with Two Integrated MOSFET Drivers and One External Driver Signal

Intersil 

Block Diagram

ICOMP OCSET

ISL6566A

PGOOD

ENLL

ISUM

IREF

ISEN AMP

100µA

OC

RGND

VSEN

VDIFF

VID4

VID3

VID2

VID1

VID0

VID12.5

VRM10

REF

FB

COMP

OFS

x1

x1

+1V

SOFT-START

AND

FAULT LOGIC

UVP

OVP

OVP

VOVP

+150mV

x 0.82

DYNAMIC

VID

D/A

0.2V

CLOCK AND

SAWTOOTH

GENERATOR

∑

PWM1

∑

PWM2

∑

PWM3

E/A

OFFSET

CHANNEL

CURRENT

BALANCE

CHANNEL

CURRENT

SENSE

1

N

∑

0.66V

POWER-ON

RESET

GATE

SHOOT-

CONTROL THROUGH

LOGIC PROTECTION

GATE

SHOOT-

CONTROL THROUGH

LOGIC PROTECTION

CHANNEL

DETECT

PH2

DETECT

PH3 POR /

DETECT

PWM3

SIGNAL

LOGIC

ISEN1 ISEN2 ISEN3

GND

2

VCC

PVCC1

BOOT1

UGATE1

PHASE1

LGATE1

FS

PVCC2

BOOT2

UGATE2

PHASE2

LGATE2

EN_PH3

PWM3

NC

NC

NC

FN9200.2

July 27, 2005

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