TOP242-249 POWERINT [Power Integrations, Inc.], TOP242-249 Datasheet - Page 3

• Manufacturer Part Number: TOP242-249
• Description: Family Extended Power, Design Flexible,Integrated Off-line Switcher
• Manufacturer: POWERINT [Power Integrations, Inc.]

Figure 2a. Functional Block Diagram (Y or R Package).
Figure 2b. Functional Block Diagram (P or G Package).
CURRENT LIMIT (X)
FREQUENCY (F)
LINE-SENSE (L)
EXTERNAL
FUNCTION (M)
CONTROL (C)
CONTROL (C)
MULTI-
R E
Z C
R E
Z C
I FB
I FB
SHUNT REGULATOR/
SHUNT REGULATOR/
ERROR AMPLIFIER
ERROR AMPLIFIER
CURRENT
CURRENT
ADJUST
ADJUST
LIMIT
LIMIT
SENSE
SENSE
V BG + V T
LINE
LINE
+
V BG
V BG + V T
-
+
-
V BG
V C
V C
1 V
V I (LIMIT)
V I (LIMIT)
ON/OFF
ON/OFF
5.8 V
OV/UV
DC MAX
5.8 V
OV/UV
DC MAX
START
START
SOFT
SOFT
STOP LOGIC
STOP LOGIC
OSCILLATOR WITH JITTER
5.8 V
4.8 V
OSCILLATOR WITH JITTER
5.8 V
4.8 V
COMPARATOR
COMPARATOR
INTERNAL UV
INTERNAL UV
DC MAX
HALF
FREQ.
DC MAX
STOP SOFT-
STOP SOFT-
+
-
+
-
START
START
CLOCK
CLOCK
D MAX
D MAX
SAW
SAW
LIGHT LOAD
FREQUENCY
REDUCTION
LIGHT LOAD
FREQUENCY
REDUCTION
SOFT START
SOFT START
COMPARATOR
COMPARATOR
AUTO-RESTART
AUTO-RESTART
SHUTDOWN/
SHUTDOWN/
HYSTERETIC
PWM
HYSTERETIC
PWM
SHUTDOWN
SHUTDOWN
THERMAL
THERMAL
-
+
+
-
÷ 8
÷ 8
0
1
0
1
INTERNAL
SUPPLY
INTERNAL
SUPPLY
S
R
S
R
Q
Q
August 8, 2000
CONTROLLED
GATE DRIVER
CONTROLLED
GATE DRIVER
CURRENT LIMIT
CURRENT LIMIT
COMPARATOR
COMPARATOR
TURN-ON
TURN-ON
BLANKING
+
BLANKING
-
+
LEADING
-
LEADING
EDGE
EDGE
TOP242-249
PI-2639-060600
PI-2631-061200
PI-2639-060600
PI-2641-061200
DRAIN (D)
SOURCE (S)
DRAIN (D)
SOURCE (S)
7/01
E
3