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Part Name
Description
VIPER20-E View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
VIPER20-E
SMPS PRIMARY I.C.
STMicroelectronics
VIPER20-E Datasheet PDF : 31 Pages
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5 Operation Description
Figure 11. Behaviour of the high voltage current source at start-up
VDD
VDDon
VDDoff
2 mA
VDD
15 mA
1 mA
15 mA
3 mA
C
VDD
Ref.
t
UNDERVOLTAGE
Auxiliary primary
LOCK OUT LOGIC
winding
VIPer20
VIPer20-E/DIP-E
DRAIN
SOURCE
Start up duty cycle ~ 12%
FC00101A
Figure 12. Start-Up Waveforms
16/31
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