VIPER25 STMicroelectronics, VIPER25 Datasheet - Page 8

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

Electrical data
8/40
Table 8.
Feedback pin
ZCD pin
Current limitation
Overcurrent protection (2
Overvoltage protection
V
R
T
V
T
Symbol
V
V
T
V
V
FBbmhys
I
STROBE
V
ON_MIN
I
FB(DYN)
ZCDCLh
V
ZCDAth
ZCDTth
BLANK
DMAX
I
D_BM
I
t
H
FBolp
FBbm
I
ZCD
Dlim
t
t
LEB
FBlin
OVP
SU
td
FB
SS
FB
Controller section
Over load shutdown threshold
Linear dynamics upper limit
Burst mode threshold
Burst mode hysteresis
Feedback sourced current
Dynamic resistance
ΔV
Upper clamp voltage
Arming voltage threshold
Triggering voltage threshold
Internal pull-up
Turn-on inhibit time after
MOSFET’s turn-off
Max drain current limitation
Soft start time
Start up time
Minimum turn ON time
Propagation delay
Leading edge blanking
Peak drain current during
burst mode
Second overcurrent threshold
Overvoltage protection
threshold
Overvoltage protection strobe
time
FB
/ ΔI
D
Parameter
nd
OCP)
Doc ID 15585 Rev 4
Voltage falling
Voltage rising
V
3.3 V < V
V
I
Positive-going edge
Negative-going edge
V
V
V
I
T
VIPER25L
VIPER25H
VIPER25L
VIPER25H
V
ZCD
ZCD
J
FB
FB
ZCD
ZCD
FB
FB
= 25 °C
Test condition
< 3.3 V
= 0.3 V
= 4 V,
= 0.6 V
= 1 mA
= -10 µA
< 1 V
>1 V
FB
< 4.8 V
Min.
-150
0.66
220
3.2
7.5
9.5
3.8
4.5
14
2
5
Typ.
-200
100
400
100
300
160
4.8
3.3
0.6
5.5
0.8
0.6
-10
6.3
2.5
0.7
1.2
4.2
2.2
-3
Max. Unit
-280
0.74
480
5.2
3.4
3.5
4.2
4.6
19
15
18
VIPER25
6
6
V/A
mV
mA
kΩ
ms
ms
ms
ms
uA
uA
µA
µs
µs
ns
ns
ns
μs
V
V
V
V
V
V
A
A
V