T0P243G
| Model | T0P243G |
| Description | Family Extended Power, Design Flexible,Integrated Off-line Switcher |
| PDF file | Total 48 pages (File size: 769K) |
| Chip Manufacturer | POWERINT |
TOP242-249
VC
0
CONTROL (C)
ZC
1
DRAIN (D)
INTERNAL
SUPPLY
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
+
5.8 V
4.8 V
SOFT START
-
5.8 V
INTERNAL UV
COMPARATOR
VI
(LIMIT)
IFB
CURRENT
LIMIT
ADJUST
SOFT
START
ON/OFF
÷
8
SHUTDOWN/
AUTO-RESTART
-
+
VBG + VT
CURRENT LIMIT
COMPARATOR
EXTERNAL
CURRENT LIMIT (X)
STOP LOGIC
LINE-SENSE (L)
VBG
1V
STOP SOFT-
START
DMAX
DCMAX
CLOCK
HALF
FREQ.
SAW
HYSTERETIC
THERMAL
SHUTDOWN
CONTROLLED
TURN-ON
GATE DRIVER
OV/UV
LINE
SENSE
DCMAX
-
+
PWM
COMPARATOR
S
R
Q
FREQUENCY (F)
OSCILLATOR WITH JITTER
LEADING
EDGE
BLANKING
RE
LIGHT LOAD
FREQUENCY
REDUCTION
SOURCE (S)
PI-2639-060600
PI-2639-060600
Figure 2a. Functional Block Diagram (Y or R Package).
VC
0
CONTROL (C)
ZC
1
DRAIN (D)
INTERNAL
SUPPLY
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
+
5.8 V
4.8 V
SOFT START
-
5.8 V
INTERNAL UV
COMPARATOR
VI
(LIMIT)
IFB
CURRENT
LIMIT
ADJUST
SOFT
START
ON/OFF
÷
8
SHUTDOWN/
AUTO-RESTART
-
+
VBG + VT
STOP LOGIC
CURRENT LIMIT
COMPARATOR
MULTI-
FUNCTION (M)
VBG
OV/UV
HYSTERETIC
THERMAL
SHUTDOWN
LINE
SENSE
DCMAX
STOP SOFT-
START
DMAX
DCMAX
CLOCK
SAW
-
+
PWM
COMPARATOR
LIGHT LOAD
FREQUENCY
REDUCTION
S
R
Q
CONTROLLED
TURN-ON
GATE DRIVER
OSCILLATOR WITH JITTER
LEADING
EDGE
BLANKING
RE
SOURCE (S)
PI-2631-061200
PI-2641-061200
Figure 2b. Functional Block Diagram (P or G Package).
August 8, 2000
E
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