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VIPER53SP-E

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Operation pictures VIPer53 - E
10/36
Figure 5. Start-up V
DD
current Figure 6. Blanking time
Figure 7. Thermal shutdown Figure 8. Overvoltage event
I
DD
V
DD
V
DDhyst
V
DDoff
V
DDon
I
DD0
I
DDch1
I
DDch2
V
DS
= 100 V
F
SW
= 0 kHz
t
b
t
b1
t
b2
V
COMPbl
V
COMPhi
V
DD
V
COMP
T
j
V
DDon
T
SD
T
SD
-T
HYST
Automatic
startup
Abnormal
operation
V
DS
V
COMP
V
DD
V
DDovp
Switching
Not
switching
VIPer53 - E Operation pictures
11/36
Figure 9. Shutdown action Figure 10. Comp pin gain and offset
Figure 11. Output characteristics
t
t
I
D
V
COMP
t
V
OSC
V
COMPoff
V
OSChi
V
OSClo
V
COMP
I
Dpeak
V
COMPos
V
COMPhi
Slope = 1 / H
COMP
I
Dlim
V
COMPovl
I
Dmax
I
COMP
V
DD
V
DDreg
I
COMPhi
I
COMPlo
0
Slope = Gm
Operation pictures VIPer53 - E
12/36
Figure 12. Oscillator schematic
The switching frequency settings shown on the graphic here below is valid within the
following boundaries:
R
t
> 2kΩ
F
SW
= 300kHz
Figure 13. Oscillator settings
320 Ω
SOURCE
OSC
VDD
PWM
section
Ct
Rt
Vcc
110100
10
300
100
Frequency (kHz)
R
T
(KΩ)
1nF
2.2nF
4.7nF
10nF
22nF
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P30P31-P33P34-P36

VIPER53SP-E

Mfr. #:
Buy VIPER53SP-E
Manufacturer:
STMicroelectronics
Description:
AC/DC Converters 620 VOLT 50W SMPS
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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