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TOP254PN Datasheet(PDF) 5 Page - Power Integrations, Inc.

Part No. TOP254PN
Description  Enhanced EcoSmart®, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range
Download  48 Pages
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Maker  POWERINT [Power Integrations, Inc.]
Homepage  http://www.powerint.com
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TOP254PN Datasheet(HTML) 5 Page - Power Integrations, Inc.

 
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Rev. F 01/09
5
TOP252-262
www.powerint.com
Figure 3c. Functional Block Diagram (TOP254-258 YN Package and all eSIP Packages).
PI-4511-082907
SHUTDOWN/
AUTO-RESTART
CLOCK
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8 V
4.8 V
SOURCE (S)
SOURCE (S)
S
R
Q
D
MAX
STOP
SOFT
START
CONTROL (C)
VOLTAGE
MONITOR (V)
FREQUENCY
(F)
-
+
5.8 V
I
FB
1 V
Z
C
V
C
+
-
+
-
+
-
LEADING
EDGE
BLANKING
÷ 16
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN (D)
ON/OFF
DC
MAX
DC
MAX
66k/132k
0
OV/
UV
OVP
V
VI (LIMIT)
CURRENT
LIMIT
ADJUST
V
BG + VT
LINE
SENSE
SOFT START
OFF
F REDUCTION
F REDUCTION
STOP LOGIC
EXTERNAL
CURRENT
LIMIT (X)
OSCILLATOR
WITH JITTER
PWM
K
PS(UPPER)
K
PS(LOWER)
SOFT START
I
FB
I
PS(UPPER)
I
PS(LOWER)
K
PS(UPPER)
K
PS(LOWER)
PI-4974-122607
SHUTDOWN/
AUTO-RESTART
CLOCK
CONTROLLED
TURN-ON
GATE DRIVER
CURRENT LIMIT
COMPARATOR
INTERNAL UV
COMPARATOR
INTERNAL
SUPPLY
5.8 V
4.8 V
SIGNAL
GROUND (G)
SOURCE (S)
S
R
Q
D
MAX
STOP
SOFT
START
CONTROL (C)
VOLTAGE
MONITOR (V)
-
+
5.8 V
I
FB
1 V
Z
C
V
C
+
-
+
-
+
-
LEADING
EDGE
BLANKING
÷ 16
1
HYSTERETIC
THERMAL
SHUTDOWN
SHUNT REGULATOR/
ERROR AMPLIFIER
+
-
DRAIN (D)
SOURCE (S)
ON/OFF
DC
MAX
DC
MAX
0
OV/
UV
OVP
V
VI (LIMIT)
CURRENT
LIMIT
ADJUST
V
BG + VT
LINE
SENSE
SOFT START
OFF
F REDUCTION
F REDUCTION
STOP LOGIC
EXTERNAL
CURRENT
LIMIT (X)
OSCILLATOR
WITH JITTER
PWM
K
PS(UPPER)
K
PS(LOWER)
SOFT START
I
FB
I
PS(UPPER)
I
PS(LOWER)
K
PS(UPPER)
K
PS(LOWER)
Figure 3d. Functional Block Diagram TOP259YN, TOP260YN, TOP261YN.


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