TOP266KG Power Integrations, TOP266KG Datasheet - Page 3

• Manufacturer Part Number: TOP266KG
• Description: IC OFFLINE SWITCHER 39W 58W
• Manufacturer: Power Integrations
• Series: TOPSwitch®-JXr

Specifications of TOP266KG

• Output Isolation: Isolated
• Frequency Range: 66 ~ 132kHz
• Voltage - Output: 725V
• Power (watts): 39W
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 12-BSOP (0.350", 8.89mm Width) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 596-1399

Figure 3.
Pin Functional Description
DRAIN (D) Pin:
High-voltage power MOSFET DRAIN pin. The internal start-up
bias current is drawn from this pin through a switched high-
voltage current source. Internal current limit sense point for
drain current.
CONTROL (C) Pin:
Error amplifier and feedback current input pin for duty cycle
control. Internal shunt regulator connection to provide internal
bias current during normal operation. It is also used as the
connection point for the supply bypass and auto-restart/
compensation capacitor.
EXTERNAL CURRENT LIMIT (X) Pin:
Input pin for external current limit adjustment remote ON/OFF
and device reset. A connection to SOURCE pin disables all
functions on this pin. This pin should not be left floating.
VOLTAGE MONITOR (V) Pin:
Input for OV, UV, line feed forward with DC
overvoltage protection (OVP), remote ON/OFF. A connection to
the SOURCE pin disables all functions on this pin. This pin should
not be left floating.
FREQUENCY (F) Pin:
Input pin for selecting switching frequency 132 kHz if connected
to SOURCE pin and 66 kHz if connected to CONTROL pin. This
pin should not be left floating.
SOURCE (S) Pin:
Output MOSFET source connection for high-voltage power return.
Primary side control circuit common and reference point.
www.powerint.com
FREQUENCY (F)
EXTERNAL CURRENT
Functional Block Diagram.
CONTROL (C)
MONITOR (V)
VOLTAGE
LIMIT (X)
Z
C
SHUNT REGULATOR/
I
ERROR AMPLIFIER
FB
CURRENT
ADJUST
V
LIMIT
SENSE
LINE
+
-
V
1 V
BG
V
OVP
C
+ V
V I (LIMIT)
ON/OFF
DC
5.8 V
T
K
K
OV/
MAX
UV
PS(UPPER)
PS(LOWER)
STOP LOGIC
MAX
5.8 V
4.8 V
reduction, output
COMPARATOR
DC
66k/132k
SOFT START
I
I
I
INTERNAL UV
FB
PS(UPPER)
PS(LOWER)
MAX
+
-
F REDUCTION
F REDUCTION
STOP SOFT
OSCILLATOR
WITH JITTER
PWM
START
CLOCK
SOFT START
D
OFF
MAX
NO CONNECTION (NC) Pin:
Internally not connected, floating potential pin.
Figure 4.
AUTO-RESTART
V
HYSTERETIC
1
SHUTDOWN/
SHUTDOWN
E Package
THERMAL
(eSIP-7C)
2
X
÷ 16
C
3
F
4
Pin Configuration (Top View).
0
1
Exposed Pad (On Bottom)
Internally Connected to
SOURCE Pin
S
5
S
R
D
7
INTERNAL
SUPPLY
Q
Exposed Pad
(Hidden)
Internally
Connected to
SOURCE Pin
CURRENT LIMIT
K
K
COMPARATOR
CONTROLLED
GATE DRIVER
NC 5
PS(LOWER)
PS(UPPER)
S 12
S 11
S 10
TURN-ON
S 9
S 8
S 7
V 1
X 2
C 3
D 6
F 4
TOP264-271
PI-4511-012810
BLANKING
+
+
+
SOURCE (S)
-
-
-
LEADING
Exposed Pad Internally
Connected to SOURCE Pin
EDGE
V Package
K Package
(eSOP-12)
(eDIP-12)
SOURCE (S)
DRAIN (D)
PI-5568-101310
1 V
2 X
3 C
4 F
5 NC
6 D
12 S
11 S
10 S
9 S
8 S
7 S
Rev. C 11/10
3