Operation pictures
VIPer22A-E, VIPer22ADIP-E, VIPer22AS-E
Figure 12. Peak drain current vs feedback current
100V
4mH
I
D
IDpeak
VDD
DRAIN
1/FOSC
FB
CONTROL
18V
100V
t
SOURCE
I
47nF
FB
VIPer22A
V
FB
I
⋅ R
FB
FBsd
The drain current limitation is
obtained for VFB = 0 V, and a
negative current is drawn from
the FB pin. See the Application
section for further details.
I
FB
I
Dpeak
ΔI
Dpeak
IDlim
G
= –------------------------
ID
ΔI
FB
I
FB
0
IFBsd
Figure 13. Thermal shutdown
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Doc ID 12050 Rev 2