ISL6443 Intersil Corporation, ISL6443 Datasheet - Page 3

• Manufacturer Part Number: ISL6443
• Description: Step- Down PWM and Single Linear Controller
• Manufacturer: Intersil Corporation

Block Diagram
SS1
BOOT1
UGATE1
PHASE1
VCC_5V
LGATE1
PGND
GATE3
FB1
ISEN1
OCSET1
FB3
+ 0.8V
REF
CURRENT
SAMPLE
180kΩ
+
g
1400kΩ
m
*V
+
-
ADAPTIVE DEAD-TIME
E
0.8V REFERENCE
V/I SAMPLE TIMING
DIODE EMULATION
-
+
V
18.5pF
ERROR AMP 1
+
-
E
CURRENT
SAMPLE
0.8V REFERENCE
16kΩ
+
-
+
-
+
OVERCURRENT FAULT
REQUIRED TO LATCH
SAME STATE FOR
PGOOD
2 CLOCK CYCLES
PGOOD
UV
PWM1
OC1
SD1
PWM CHANNEL PHASE CONTROL
DUTY CYCLE RAMP GENERATOR
VIN
OC1
BIAS SUPPLIES
FAULT LATCH
SOFT-START
REFERENCE
VIN
ENABLE
SYNC
POR
SGND
OC2
VCC
OVERCURRENT FAULT
REQUIRED TO LATCH
SAME STATE FOR
SD2
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
+
-
1400kΩ
-
+
+
PGND
180kΩ
CURRENT
SAMPLE
+
0.8V
REF
UGATE2
PHASE2
LGATE2
OCSET2
BOOT2
VSEN2
SOFT2
ISEN2
VCC