viper20sp STMicroelectronics, viper20sp Datasheet - Page 16

• Manufacturer Part Number: viper20sp
• Description: Smps Primary I.c.
• Manufacturer: STMicroelectronics

Figure 22: Input Voltage Surges Protection
ELECTRICAL OVER STRESS RUGGEDNESS
The VIPer may be submitted to electrical over
stress caused by violent input voltage surges or
lightning.
Considerations chapter rules is the most of the
time sufficient to prevent catastrophic damages,
however in some cases the voltage surges
coupled through the transformer auxiliary winding
Bulk capacitor
C1
Following
the
22nF
C2
enclosed
OSC
VIPerXX0
13V
Layout
VDD
39R
R2
-
+
COMP SOURCE
can overpass the V
rating voltage value. Such events may trigger the
V
damaged by the strong discharge current of the
V
figure 22 can be implemented to improve the
application immunity to such surges.
(Optional)
DD
DD
R1
bulk capacitor. The simple RC filter shown in
internal protection circuitry which could be
VIPer20/SP/DIP - VIPer20A/ASP/ADIP
DRAIN
D1
DD
pin absolute maximum
Auxilliary winding
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