ISL6557A Datasheet, PDF (2/19 Pages) Intersil Corporation – Multi-Phase PWM Controller for Core-Voltage Regulation

Block Diagram
ISL6557A
VDIFF _PGOOD
VCC
RGND
VSEN
COMP
VID0
VID1
VID2
VID3
VID4
-
x1
POWER-ON
+
RESET (POR)
x 0.9
-
UV
+
OV
S _LATCH
+
OVP
-
2.1V
SOFT-
START
AND FAULT
LOGIC
+
∑
-
+
∑
-
CLOCK AND
SAWTOOTH
GENERATOR
+
PWM
-
+
PWM
-
2.5V
DYNAMIC
VID
D/A
+
E/A
-
+
∑
-
+
∑
-
+
PWM
-
+
PWM
-
1.23V
-
+
EN
FS
PWM1
PWM2
PWM3
PWM4
FB
IOUT
CURRENT
CORRECTION
I_OC
-
+
OC
+
∑⁺
+
I_TOT
+
PHASE
NUMBER
CHANNEL
DETECTOR
ISEN1
ISEN2
ISEN3
ISEN4
GND
2