ISL6554 Datasheet, PDF (2/16 Pages) Intersil Corporation – Microprocessor CORE Voltage Regulator Using Multi-Phase Buck PWM Control Without Programmable Droop

Block Diagram
ISL6554
PGOOD
VCC
VSEN
COMP
VID4
VID3
VID2
VID1
VID0
FB
X 0.9
X1.15
UV
+
-
OVP
+
-
OV
LATCH
S
POWER-ON
RESET (POR)
CLOCK AND
SAWTOOTH
GENERATOR
THREE
STATE
+
∑
-
PWM
+
-
SOFT-
START
AND FAULT
LOGIC
+_∑
-
PWM
+
-
+
∑
-
PWM
+
-
D/A
+ ^E/A
-
+
∑
-
PWM
+
-
CURRENT
CORRECTION
I_TOT
+
+
+
∑+
-
+
OC _{I_TRIP}
PHASE
NUMBER _CHANNEL
DETECTOR
GND
FS/EN
PWM1
PWM2
PWM3
PWM4
ISEN1
ISEN2
ISEN3
ISEN4
2
FN9003.3
February 11, 2005