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VIPER100ASPTR-E

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P31
VIPer100A-E/ASP-E 5 Operation Description
19/31
Figure 15. Error Amplifier frequency Response
Figure 16. Error Amplifier Phase Response
0.001 0.01 0.1 1 10 100 1,00
0
(20)
0
20
40
60
Frequency (kHz)
Voltage Gain (dB)
RCOMP = +
∞
RCOMP = 270k
RCOMP = 82k
RCOMP = 27k
RCOMP = 12k
FC00200
0.001 0.01 0.1 1 10 100 1,00
0
(50)
0
50
100
150
200
Frequency (kHz)
Phase (°)
RCOMP = +
∞
RCOMP = 270k
RCOMP = 82k
RCOMP = 27k
RCOMP = 12k
FC00210
5 Operation Description VIPer100A-E/ASP-E
20/31
Figure 17. Mixed Soft Start and Compensation Figure 18. Latched Shut Down
Figure 19. Typical Compensation Network Figure 20. Slope Compensation
Figure 21. External Clock Synchronization Figure 22. Current Limitation Circuit Example
AUXILIAR
Y
WINDING
-
+
13V
OSC
COMP SOURCE
DRAINVDD
U1
VIPER100
R1
C1
+
C2
D1
R2
R3
D2
D3
+
C3
FC00131
C4
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPER100
Shutdown
U1
Q1
Q2
R1
R2R3
R4
D1
FC00110
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPER100
U1
R1
C1
FC00121
C2
FC00141
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPER100
R1R2
Q1
C2
C1 R3
U1
C3
-
+
13V
OSC
COMP SOURCE
DRAINVDD
U1
VIPER100
10 k
Ω
FC00220
-
+
13V
OSC
COMP SOURCE
DRAINVDD
VIPER100
U1
R1
R2
Q1
FC00240
VIPer100A-E/ASP-E 6 Electrical Over Stress
21/31
6 Electrical Over Stress
6.1 Electrical Over Stress Ruggedness
The VIPer may be submitted to electrical over-stress, caused by violent input voltage surges or
lightning. Following the Layout Considerations is sufficient to prevent catastrophic damages
most of the time. However in some cases, the voltage surges coupled through the transformer
auxiliary winding can exceed the V
DD
pin absolute maximum rating voltage value. Such events
may trigger the V
DD
internal protection circuitry which could be damaged by the strong
discharge current of the V
DD
bulk capacitor. The simple RC filter shown in Figure 23 can be
implemented to improve the application immunity to such surges.
Figure 23. Input Voltage Surges Protection
C1
B
ulk capacitor
D1
R1
(Optional)
C2
22nF
Auxilliary windin
g
13V
OSC
COMP
SOURCE
DRAIN
VDD
-
+
VIPerXX0
R2
39R
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P31

VIPER100ASPTR-E

Mfr. #:
Buy VIPER100ASPTR-E
Manufacturer:
STMicroelectronics
Description:
AC/DC Converters PWM MOSFET SWITCH
Lifecycle:
New from this manufacturer.
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