isl6441 Intersil Corporation, isl6441 Datasheet - Page 3

• Manufacturer Part Number: isl6441
• Description: 1.4mhz Dual, 180? Out-of-phase, Step-down Pwm And Single Linear Controller
• Manufacturer: Intersil Corporation

Block Diagram
SS1
ISEN1
BOOT1
UGATE1
PHASE1
VCC_5V
LGATE1
PGND
GATE3
FB1
OCSET1
FB3
+ 0.9V
REF
CURRENT
SAMPLE
180kΩ
+
g
800kΩ
m
*V
+
-
ADAPTIVE DEAD-TIME
E
0.8V REFERENCE
DIODE EMULATION
V/I SAMPLE TIMING
-
+
18.5pF
ERROR AMP 1
V
+
-
E
CURRENT
SAMPLE
0.8V REFERENCE
16kΩ
+
-
+
-
+
OVERCURRENT FAULT
REQUIRED TO LATCH
SAME STATE FOR
2 CLOCK CYCLES
PGOOD
PGOOD
UV
PWM1
OC1
SD1
PWM CHANNEL PHASE CONTROL
DUTY CYCLE RAMP GENERATOR
VIN
OC1
BIAS SUPPLIES
FAULT LATCH
REFERENCE
SOFT-START
VIN
ENABLE
POR
SGND
OC2
VCC
OVERCURRENT FAULT
REQUIRED TO LATCH
SD2
SAME STATE FOR
2 CLOCK CYCLES
OC2
PWM2
PGOOD
VCC
UV
-
+
-
+
16kΩ
CURRENT
SAMPLE
ERROR AMP 2
ADAPTIVE DEAD-TIME
DIODE EMULATION
V/I SAMPLE TIMING
0.8V REFERENCE
18.5pF
+
-
800kΩ
-
+
+
PGND
180kΩ
CURRENT
SAMPLE
+
0.8V
REF
UGATE2
PHASE2
LGATE2
OCSET2
BOOT2
VSEN2
SOFT2
ISEN2
VCC