DPA424P-TL POWERINT [Power Integrations, Inc.], DPA424P-TL Datasheet - Page 14
DPA424P-TL
Manufacturer Part Number
DPA424P-TL
Description
Highly Integrated DC-DC Converter ICs for Distributed Power Architectures
Manufacturer
POWERINT [Power Integrations, Inc.]
Datasheet
1.DPA424P-TL.pdf
(36 pages)
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Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
Figure 21. Active-on Remote ON/OFF with LINE-SENSE and
Figure 23. Line-Sensing and Externally Set Current Limit.
14
DPA423-426
Voltage
Voltage
Input
Input
K
1/04
DC
DC
+
+
EXTERNAL CURRENT LIMIT.
-
-
D
S
D
S
R
R
CONTROL
CONTROL
LS
LS
X
X
R
12 kΩ
L
L
619 KΩ
1%
619 kΩ
1%
IL
R
IL
C
C
DC
DC
Q
output or can be replaced
by a manual switch.
For R
DC
DC
R
Q
For R
See Figure 34 for other
resistor values (R
to select different I
values
V
V
MAX
MAX
MAX
MAX
can be an optocoupler
R
UV
OV
LS
I
47 kΩ
LIMIT
@36 V = 75%
@72 V = 42%
@36 V = 75%
@72 V = 42%
= 33.3 V
= 86.0 V
IL
= 619 kΩ
For R
= 12 kΩ
= 64%
I
LIMIT
PI-2837-011904
PI-2859-050602
IL
ON/OFF
= 12 kΩ
= 64%
IL
LIMIT
)
Figure 22. Active-off Remote ON/OFF with LINE-SENSE.
Figure 24. Synchronization.
Voltage
Voltage
Input
Input
DC
DC
+
+
-
-
ON/OFF
47 kΩ
D
S
D
S
Q
R
R
CONTROL
CONTROL
LS
L
L
619 kΩ
1%
Q
output.
For timing requirements,
R
C
can be an optocoupler
C
Q
output or can be replaced
by a MOSFET or manual
switch.
R
Q
can be an optocoupler
R
For R
V
V
see Figure 6.
UV
OV
47 kΩ
= 33.3 V
= 86.0 V
PI-2858-072602
PI-2640-050602
LS
= 619
ON/OFF
kΩ
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