DPA422-426
Typical Uses of LINE-SENSE (L) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
+
DCMAX@36 V = 75%
DCMAX@72 V = 42%
619 k
RLS
1%
ON/OFF
QR can be an optocoupler
DC
Input
Voltage
output or can be replaced
by a manual switch.
D
S
L
CONTROL
DC
Input
Voltage
C
For RIL = 12 k
ILIMIT = 64%
D
S
L
CONTROL
C
X
QR
RIL
ON/OFF
47 k
-
PI-2859-050602
Figure 22. Active-off Remote ON/OFF with LINE-SENSE.
Figure 21. Active-on Remote ON/OFF with LINE-SENSE and
EXTERNAL CURRENT LIMIT.
+
+
QR can be an optocoupler
For RLS = 619 k
output.
VUV = 33.3 V
VOV = 86.0 V
619 K
1%
For timing requirements,
see Figure 6.
RLS
DCMAX@36 V = 75%
DCMAX@72 V = 42%
DC
Input
Voltage
DC
Input
Voltage
D
S
L
D
S
L
CONTROL
CONTROL
C
C
For RIL = 12 k
ILIMIT = 64%
X
See Figure 32 for other
resistor values (RIL)
to select different ILIMIT
RIL
12 k
ON/OFF
QR
47 kΩ
-
-
values
PI-3868-050602
PI-2837-050602
Figure 24. Synchronization.
Figure 23. Line-Sensing and Externally Set Current Limit.
13
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Rev. T 12/12
POWERINT [ Power Integrations ]
