ISL6740A Datasheet, PDF (2/15 Pages) Intersil Corporation – Flexible Double-Ended Voltage-Mode PWM Controller with Voltage Feed Forward

Functional Block Diagram
V_DD
V_REF
SYNC
GND
UV/FF
+
-
BG ^+-
V_REF
5.00 V
1%
ENABLE
100
4.5 k
Internal
OT Shutdown
130 - 150 C
1.00 V
INHIBIT/V_IN UV
+
-
INHIBIT
N_SYNC OUT
Bi-Directional
Synchronization SYNC IN
EXT. SYNC
R_TC
R_TD
I_RTC
I_RTD
SCSET
C_T
Oscillator
CLK
Short Circuit
Detection
SS DONE
CS
V_ERROR
OTS
0.4
0.4
+
0.6 V -
OC DETECT
PWM
COMPARATOR
+
-
-
SS
0.5
FL
Q
T
Q
PWM TOGGLE
SC S/D
SS LOW
SQ
RQ
SC LATCH
-
+
4.5 V
SS CLAMP
SS DONE
300 k
OC S/D
OC LATCH
SQ
RQ
OUTA
OUTB
V_REF
70µA
ON
SS
15µA
Q
Q
50 µS
RETRIGGERABLE
ONE SHOT
SQ
RQ
PWM LATCH
RESET
DOMINANT
V_REF/2
-
+
INHIBIT
SS HI
+
-
4.25 V
SS LOW
+ 0.27 V
-
FAULT LATCH
SET DOMINANT
S Q _FL
RQ
SC S/D
OC S/D
V_REF UV 4.65 V
-
+
BG ^+-
V_REF
FAULT