ISL6721 Intersil Corporation, ISL6721 Datasheet - Page 2

• Manufacturer Part Number: ISL6721
• Description: Flexible Single Ended Current Mode PWM Controller
• Manufacturer: Intersil Corporation

Functional Block Diagram
ISENSE
SLOPE
COMP
LGND
RTCT
SYNC
ISET
VFB
V
4V
2V
CC
VREF
5K
20K
30K
SS
VREF
+
-
VREF
2.5V
1mA
3.0V
1.5V
ON
SS CLAMP
BG
UV COMPARATOR
53 µA
0.8
0.1
COMPARATOR
START/STOP
+
OSCILLATOR
-
100
12K
AMPLIFIER
+
-
ERROR
+
-
+
+
Σ
-
+
+
-
-
+
100mV
2
4.5K
PROTECTION
THERMAL
RESTART
ENABLE
ON
DELAY
-
+
OVERCURRENT
COMPARATOR
5.00 V
OC DETECT
COMPARATOR
1/3
V
1 %
REF
OSC IN
CLK OUT
NO EXT SYNC
EXT SYNC BLANKING
SYNC IN
Synchronization
PWM
Bi-Directional
VREF
+
-
BLANKING
SYNC OUT
100nS
VOLTAGE CLAMP
SS CHARGE
RETRIGGERABLE
ISL6721
START
ONE SHOT
50 µS
SS CHARGED
Q
Q
S
R
Q
Q
UV COMPARATOR
VREF
4.65V
OVERCURRENT
SET DOMINANT
SHUTDOWN
+
DELAY
-
FAULT
LATCH
S
R
COMPARATOR
BLANKING
Q
BG
Q
SS LOW
+
-
OC LATCH
S
R
COMPARATOR
Q
Q
SS LOW
3.0V
+
-
VREF
+
-
4.375V
270mV
36K
25 µA
SOFTSTART
ON
CURRENT
CHARGE
+
+
-
-
2.50V
1.45V
70 µA
ON
15 µA
VREF
SS
OV
UV
V
GATE
PGND
C