ISL6322 Datasheet, PDF (3/41 Pages) Intersil Corporation – Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10, VR11, and AMD Applications

ISL6322
Block Diagram
VSEN
RGND
VDIFF
OPEN SENSE
LINE DETECT
x1
UNDERVOLTAGE
DETECTION
LOGIC
OVERVOLTAGE
DETECTION
LOGIC
PGOOD
SOFT-START
AND
FAULT LOGIC
0.2V
EN
0.85V
POWER-ON
RESET
MOSFET
DRIVER
SS/RST/A0
SCL
SDA
I²C
LOGIC
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
VCC
PVCC1_2
BOOT1
UGATE1
PHASE1
LGATE1
FS
BOOT2
UGATE2
PHASE2
LGATE2
EN_PH4
PVCC3
BOOT3
UGATE3
PHASE3
LGATE3
PWM4
ISEN1- ISEN1+ ISEN2- ISEN2+ ISEN3- ISEN3+ ISEN4- ISEN4+
GND
3
FN6328.0
August 21, 2006