TOP242-250 POWERINT [Power Integrations, Inc.], TOP242-250 Datasheet - Page 18

• Manufacturer Part Number: TOP242-250
• Description: TOPSwitch-GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
• Manufacturer: POWERINT [Power Integrations, Inc.]

Figure 34. Externally Set Current Limit (Not Normally Required-See
Figure 36. Active-on (Fail Safe) Remote ON/OFF.
Typical Uses of MULTI-FUNCTION (M) Pin (cont.)
18
TOP242-250
ON/OFF
Voltage
Input
Voltage
M
12/04
DC
Input
M Pin Operation Description).
DC
+
-
+
47 kΩ
-
R
IL
Q
R
D
S
D
S
CONTROL
CONTROL
M
M
Q
output or can be replaced
by a manual switch.
R
C
C
can be an optocoupler
For R
For R
See Figures 54b, 55b
and 56b for other resistor
values (R
different I
I
I
LIMIT
LIMIT
IL
IL
= 25 kΩ
= 12 kΩ
LIMIT
IL
= 69%
= 43%
) to select
PI-2517-022604
PI-2519-040501
values.
Figure 35. Current Limit Reduction with Line Voltage (Not Normally
Figure 37. Active-off Remote ON/OFF. Maximum Duty Cycle
Voltage
Input
Voltage
DC
+
Input
-
DC
Required-See M Pin Operation Description).
Reduced.
+
-
ON/OFF
R
R
LS
IL
6 kΩ
2.5 MΩ
47 kΩ
D
S
Q
CONTROL
D
S
R
M
CONTROL
45 kΩ
R
MC
M
C
I
I
LIMIT
LIMIT
Q
output or can be replaced
by a manual switch.
R
C
=
=
can be an optocoupler
100% @ 100 VDC
63% @ 300 VDC
PI-2518-040501
PI-2522-040501