Datasheet

15/23
VIPer50/SP - VIPer50A/ASP
COMP pin in order to limit the primary peak current
of the device to a value:
where:
The suggested value for R
1
+R
2
is in the range of
220K
Ω
.
OVER-TEMPERATURE PROTECTION:
Over-temperature protection is based on chip
temperature sensing. The minimum junction
temperature at which over-temperature cut-out
occurs is 140
º
C while the typical value is 170
º
C.
The device is automatically restarted when the
junction temperature decreases to the restart
temperature threshold that is typically 40
º
C below
the shutdown value (see figure 8).
I
DPEAK
V
COMP
0.5
–
H
ID
-------------------------------------
=
V
COMP
0.6
R
1
R
2
+
R
2
----------------------
×
=
Figure 18: Typical Compensation Network
Figure 20: External Clock Synchronization
Figure 19: Slope Compensation
Figure 21: Current Limitation Circuit Example
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPer50
R1
C1
FC00351
C2
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPer50
R1R2
Q1
C2
C1 R3
FC00361
C3
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPer50
10 k
Ω
FC00370
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPer50
R1
R2
Q1
FC00380