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TOP244F Datasheet(PDF) 17 Page - Power Integrations, Inc.

Part # TOP244F
Description  TOPSwitch -GX Family Extended Power, Design Flexible, EcoSmart, Integrated Off-line Switcher
Download  52 Pages
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Manufacturer  POWERINT [Power Integrations, Inc.]
Direct Link  http://www.powerint.com
Logo POWERINT - Power Integrations, Inc.

TOP244F Datasheet(HTML) 17 Page - Power Integrations, Inc.

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TOP242-250
17
G
1/02
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
Figure 22. Active-on (Fail Safe) Remote ON/OFF.
X
PI-2625-040501
DC
Input
Voltage
+
-
D
S
C
ON/OFF
47 k
Ω
QR can be an optocoupler
output or can be replaced by
a manual switch.
Q
R
CONTROL
X
ON/OFF
47 k
Ω
PI-2626-040501
DC
Input
Voltage
+
-
D
S
C
R
IL
Q
R
12 k
Ω
For RIL =
ILIMIT = 69 %
25 k
Ω
For RIL =
ILIMIT = 43 %
QR can be an optocoupler
output or can be replaced
by a manual switch.
CONTROL
PI-2627-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
47 k
Ω
Q
R
R
MC
45 k
Ω
QR can be an
optocoupler output
or can be replaced
by a manual switch.
ON/OFF
X
R
IL
PI-2622-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
47 k
Ω
2 M
Ω
Q
R
R
LS
ON/OFF
For RLS = 2 MΩ
VUV = 100 VDC
VOV = 450 VDC
QR can be an optocoupler
output or can be replaced
by a manual switch.
X
ON/OFF
47 k
Ω
PI-2628-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
R
IL
R
LS
Q
R
2 M
Ω
VUV = IUV x RLS
VOV = IOV x RLS
DCMAX@100 VDC = 78%
DCMAX@375 VDC = 38%
12 k
Ω
For RIL =
ILIMIT = 69 %
QR can be an optocoupler
output or can be replaced
by a manual switch.
Figure 23. Active-off Remote ON/OFF. Maximum Duty Cycle will
be reduced.
Figure 24. Active-on Remote ON/OFF with Externally Set Current
Limit.
Figure 25. Active-off Remote ON/OFF with Externally Set Current
Limit.
Figure 26. Active-off Remote ON/OFF with LINE-SENSE.
Figure 27. Active-on Remote ON/OFF with LINE-SENSE and
EXTERNAL CURRENT LIMIT.
PI-2621-040501
DC
Input
Voltage
+
-
D
S
C
CONTROL
L
47 k
Ω
Q
R
R
MC
45 k
Ω
QR can be an
optocoupler output or
can be replaced
by a manual switch.
ON/OFF


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