TOP259YN Datasheet, PDF (5/48 Pages) Power Integrations, Inc. – Enhanced EcoSmart®, Integrated Off-Line Switcher with Advanced Feature Set and Extended Power Range

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