isl6333 Intersil Corporation, isl6333 Datasheet - Page 7

• Manufacturer Part Number: isl6333
• Description: Three-phase Buck Pwm Controller With Integrated Mosfet Drivers And Light Load Efficiency Enhancements For Intel Vr11.1 Applications
• Manufacturer: Intersil Corporation

Block Diagram - ISL6333A
IDROOP
COMP
RGND
VDIFF
VSEN
IMON
VID7
VID6
VID5
VID4
VID3
VID2
VID1
VID0
OFS
DVC
REF
APA
FB
FS
OFFSET
DYNAMIC
x2
UNDERVOLTAGE
D/A
VID
OVERVOLTAGE
I_AVG
I_TRIP
DETECTION
DETECTION
x1
LOGIC
LOGIC
V
OCP
LINE PREVENTION
OPEN SENSE
7
OCP
1kΩ
OCP
RGND
ISL6333, ISL6333A, ISL6333B, ISL6333C
ISL6333, ISL6333A, ISL6333B, ISL6333C
I_AVG
E/A
OCP
VR_RDY
ADAPTIVE PHASE
FAULT LOGIC
SOFT-START
ALLIGNMENT
MODULATOR
GENERATOR
CLOCK AND
WAVEFORM
CIRCUITRY
AND
SS
CHANNEL
CURRENT
BALANCE
CURRENT
APP AND APA
APP AND APA
APP AND APA
MODULATOR
MODULATOR
MODULATOR
LIMIT
AND
I_AVG
GND
+
PWM1
PWM2
PWM3
+
LOW POWER
∑
1
N
CIRCUITRY
+
STATE
0.85V
EN
POWER-ON
RESET
CURRENT
CURRENT
CURRENT
SENSE
SENSE
SENSE
CHANNEL
CH3
CH2
CH1
DETECT
MOSFET
MOSFET
MOSFET
DRIVER
DRIVER
DRIVER
R
R
R
ISEN1
ISEN3
ISEN2
April 10, 2008
PVCC1
PVCC3
PUVCC
PVCC2
PSI#
VCC
BOOT1
UGATE1
PHASE1
LGATE1
BOOT2
UGATE2
PHASE2
LGATE2
BOOT3
UGATE3
PHASE3
LGATE3
ISEN3-
ISEN3+
ISEN2-
ISEN2+
RSET
ISEN1+
ISEN1-
FN6520.0