TOP242G Power Integrations, TOP242G Datasheet - Page 4

• Manufacturer Part Number: TOP242G
• Description: IC OFFLINE SWIT OVP UVLO HV 8SMD
• Manufacturer: Power Integrations
• Series: TOPSwitch®-GXr

Specifications of TOP242G

• Output Isolation: Isolated
• Frequency Range: 66 ~ 132kHz
• Voltage - Output: 700V
• Power (watts): 15W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SMD Gull Wing, 7 Leads
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 3. Pin Configuration (top view).
Pin Functional Description
DRAIN (D) Pin:
High voltage power MOSFET drain output. 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.
LINE-SENSE (L) Pin: (Y, R or F package only)
Input pin for OV, UV, line feed forward with DC
remote ON/OFF and synchronization. A connection to SOURCE
pin disables all functions on this pin.
EXTERNAL CURRENT LIMIT (X) Pin: (Y, R or F package
only)
Input pin for external current limit adjustment, remote
ON/OFF, and synchronization. A connection to SOURCE pin
disables all functions on this pin.
MULTI-FUNCTION (M) Pin: (P or G package only)
This pin combines the functions of the LINE-SENSE (L) and
EXTERNAL CURRENT LIMIT (X) pins of the Y package
into one pin. Input pin for OV, UV, line feed forward with
DC
ON/OFF and synchronization. A connection to SOURCE pin
disables all functions on this pin and makes TOPSwitch-GX
operate in simple three terminal mode (like TOPSwitch-II).
4
M
C
S
S
TOP242-250
MAX
G Package (SMD-8B)
P Package (DIP-8B)
Connected to
Tab Internally
SOURCE Pin
O
11/05
reduction, external current limit adjustment, remote
3
4
2
1
Y Package (TO-220-7C)
8
7
5
S
D
S
R Package (TO-263-7C)
F Package (TO-262-7C)
C L X S F
1 2 3 4 5
MAX
D
7
PI-2724-010802
reduction,
7 D
5 F
4 S
3 X
2 L
1 C
FREQUENCY (F) Pin: (Y, R or F package only)
Input pin for selecting switching frequency: 132 kHz if
connected to SOURCE pin and 66 kHz if connected to
CONTROL pin. The switching frequency is internally set for
fixed 132 kHz operation in P and G packages.
SOURCE (S) Pin:
Output MOSFET source connection for high voltage power
return. Primary side control circuit common and reference point.
Figure 4. Y/R/F Pkg Line Sense and Externally Set Current Limit.
Figure 5. P/G Package Line Sense.
Figure 6. P/G Package Externally Set Current Limit.
Voltage
Voltage
Voltage
Input
Input
Input
DC
DC
DC
+
+
+
-
-
-
R
IL
D
S
D
S
D
S
R
R
CONTROL
CONTROL
CONTROL
LS
LS
X
12 kΩ
M
R
M
L
2 MΩ
IL
2 MΩ
C
C
C
For R
DC
DC
For R
For R
See Figures 54b, 55b
and 56b for other resistor
values (R
different I
For R
DC
DC
V
V
V
V
For R
I
See Figure 54b for
other resistor values
(R
I
V
V
V
V
LIMIT
LIMIT
MAX
MAX
MAX
MAX
UV
OV
UV
OV
UV
OV
I
I
UV
OV
IL
LIMIT
LIMIT
LS
IL
IL
LS
) to select different
= I
= I
= 100 VDC
= 450 VDC
@100 VDC = 78%
@375 VDC = 38%
@100 VDC = 78%
@375 VDC = 38%
= I
= I
= 100 VDC
= 450 VDC
= 12 kΩ
= 25 kΩ
= 69%
values
IL
= 2 MΩ
= 2 MΩ
OV
UV
LIMIT
IL
OV
UV
= 12 kΩ
= 69%
= 43%
) to select
x R
x R
PI-2517-022604
x R
x R
PI-2509-040501
values.
LS
LS
LS
LS