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ISL6326

4-Phase PWM Controller with 8-Bit DAC Code Capable of Precision DCR Differential Current Sensing

Intersil 

ISL6326

Typical Application - 4-Phase Buck Converter with Integrated Temperature Compensation

+5V

VTT

VR_RDY

VID7

VID6

VID5

VID4

VID3

VID2

VID1

VID0

VRSEL

VR_FAN

VR_HOT

VIN

FB

COMP VCC

DAC

IDROOP

REF

VDIFF

VSEN

RGND

EN_VTT

ISEN1+

ISEN1-

PWM1

ISL6326

PWM3

ISEN3-

ISEN3+

ISEN2+

ISEN2-

PWM2

EN_PWR

GND

ISL6614

PWM4

ISEN4-

ISEN4+

TCOMP

TM OFS FS SS

+5V

+5V

NTC

+12V

VCC

VIN

BOOT1

GND

UGATE1

PHASE1

LGATE1

ISL6614 PVCC

5V

TO

DRIVER

12V VIN

BOOT2

PWM1

UGATE2

PHASE2

PWM2

LGATE2

PGND

+12V

VCC

VIN

BOOT1

GND

ISL6614

DRIVER

UGATE1

PHASE1

LGATE1

5V

PVCC

To

12V VIN

BOOT2

PWM1

UGATE2

PHASE2

PWM2

LGATE2

PGND

µP

LOAD

5

FN9262.1

May 5, 2008

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