VIPER25 STMicroelectronics, VIPER25 Datasheet - Page 18

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VIPER25

Manufacturer Part Number
VIPER25
Description
VIPerPlus family: quasi-resonant high performance off line high voltage converter
Manufacturer
STMicroelectronics
Datasheet

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Operation description
18/40
Figure 24. Timing diagram: Start-up phase and soft start (case 1)
Figure 25. Timing diagram: Start-up phase and soft start (case 2)
I
DRAIN
I
V
V
DRAIN
V
V
V
V
V
FBolp
I
OUT
V
FBolp
FBlin
I
FBlin
OUT
Dlim
Dlim
FB
FB
Regulated value
Regulated value
t
SU
t
SS
t
SU
(start up phase)
t
(soft start)
SS
(start up phase)
(soft start)
Doc ID 15585 Rev 4
T
OLP-delay
VIPER25
t
t
t
t
t
t

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