top233 Power Integrations, Inc., top233 Datasheet - Page 13

• Manufacturer Part Number: top233
• Description: Design Flexible, Ecosmart , Integrated Off-line Switcher
• Manufacturer: Power Integrations, Inc.

Figure 19. Active-on (Fail Safe) Remote ON/OFF.
Typical Uses of MULTI-FUNCTION (M) Pin (cont.)
Figure 21. Active-on Remote ON/OFF with Externally Set Current
ON/OFF
ON/OFF
Voltage
Input
Voltage
DC
Input
+
DC
47 kΩ
-
+
Limit.
47 kΩ
-
Q
R
IL
R
Q
R
D
S
D
S
CONTROL
CONTROL
M
M
Figure 23. Active-off Remote ON/OFF with Line Sense.
Voltage
Q
output or can be replaced by
a manual switch.
Input
Q
output or can be replaced
by a manual switch.
DC
C
R
R
C
can be an optocoupler
+
can be an optocoupler
For R
For R
-
ON/OFF
I
I
LIMIT
LIMIT
IL
IL
=
=
12 kΩ
25 kΩ
= 67 %
= 40 %
PI-2519-040401
PI-2520-040401
47 kΩ
D
S
Q
R
R
CONTROL
LS
M
2 MΩ
Figure 20. Active-off Remote ON/OFF.
Figure 22. Active-off Remote ON/OFF with Externally Set Current
C
Voltage
Q
output or can be replaced
by a manual switch.
Voltage
Input
DC
R
Input
+
DC
-
can be an optocoupler
+
-
Limit.
For R
V
V
R
ON/OFF
UV
OV
IL
ON/OFF
= 100 VDC
= 450 VDC
12 kΩ
LS
PI-2523-040401
= 2
47 kΩ
D
S
47 kΩ
MΩ
D
S
CONTROL
Q
Q
CONTROL
R
R
M
M
45 kΩ
R
R
MC
MC
C
C
Q
output or can be replaced
by a manual switch.
24 kΩ
Q
output or can be replaced
by a manual switch.
R
TOP232-234
R
can be an optocoupler
can be an optocoupler
R
MC
=
PI-2522-040401
PI-2521-040401
2R
7/01
B
IL
13