ISL6333 Datasheet, PDF (9/40 Pages) Intersil Corporation – Three-Phase Buck PWM Controller with Integrated MOSFET Drivers and Light Load Efficiency Enhancements for Intel VR11.1 Applications

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
V_OCP
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
R_ISEN3
CH2
CURRENT
SENSE
R_ISEN2
CH1
CURRENT
SENSE
R_ISEN1
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