ISL6308(2008) Ver la hoja de datos (PDF) - Intersil

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ISL6308
(Rev.:2008)

Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers

Intersil 

Block Diagram

ICOMP DROOP OCSET

ISL6308

PGOOD OVP

ENLL

ISUM

IREF

ISEN AMP

RGND

VSEN

VDIFF

x1

x1

UVP

OVP

OVP

REF1

REF0

DAC

+150mV

x 0.82

DAC

100µA

OC

+1V

SOFT-START

AND

FAULT LOGIC

0.2V

CLOCK AND

SAWTOOTH

GENERATOR

∑

PWM1

∑

PWM2

∑

PWM3

0.66V

POWER-ON

RESET

GATE

SHOOT-

CONTROL THROUGH

LOGIC PROTECTION

GATE

SHOOT-

CONTROL THROUGH

LOGIC PROTECTION

CHANNEL

DETECT

REF

FB

COMP

OFST

OFFSET

CHANNEL

1

E/A

CURRENT

N

BALANCE

∑

CHANNEL

CURRENT

SENSE

ISEN1 ISEN2 ISEN3

GATE

SHOOT-

CONTROL THROUGH

LOGIC PROTECTION

GND

3

VCC

PVCC1

BOOT1

UGATE1

PHASE1

LGATE1

FS

PVCC2

BOOT2

UGATE2

PHASE2

LGATE2

2PH

3PH

PVCC3

BOOT3

UGATE3

PHASE3

LGATE3

FN9208.4

September 30, 2008

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