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VIPER318HDTR データシート(PDF) 8 Page - STMicroelectronics

部品番号 VIPER318HDTR
部品情報  Energy saving offline high voltage converter
PDF  39 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

VIPER318HDTR データシート(HTML) 8 Page - STMicroelectronics

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Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
tSS
Soft-start time
5
8
11
ms
tON_MIN
Minimum turn-on time
VCC = 9 V,
VCOMP = 1 V,
VFB = VFB_REF
250
300
350
ns
tRESTART
Restart time after fault
0.625
1
1.375
s
UVP
VUVP_th
UVP threshold
VCC = 9 V,
VCOMP = 1 V,
VFB = VFB_REF
0.38
0.4
0.42
V
IUVP_pull- up
UVP pull-up current
-1
µA
tUVP_DEB
Debounce time before UVP tripping
18.75
30
41.25
ms
tUVP_REST
Debounce time for restoring normal
operation from UVP
18.75
30
41.25
ms
Iq_DIS
Quiescient current during UVP
Not switching, VFB> VFB_REF
0.25
0.35
mA
OVP
VOVP_th
Overvoltage protection threshold
VCC = 9 V,
VCOMP = 1 V,
VFB = VFB_REF
3.85
4
4.15
V
tOVP_DEB
Debounce time before OVP tripping
156
250
344
µs
tOVP_REST
Restart time after overvoltage
protection tripping
312
500
688
ms
Oscillator
FOSC
Switching frequency
TJ = 25ºC VIPER31*X
27
30
33
kHz
TJ = 25ºC, VIPER31*L
54
60
66
TJ = 25ºC, VIPER31*H
119
132
145
FOSC MIN
Min. switching frequency
TJ = 25ºC (3)
13.5
15
16.5
kHz
FD
Modulation depth
(4)
±7·FOSC
%
FM
Modulation frequency
(4)
200
Hz
DMAX
Max. duty cycle
(4)
70
80
%
Thermal shutdown protection
TSD
Thermal shutdown temperature
threshold
(4)
150
160
°C
1. Measured at Vin = 100 Vdc in Flyback topology, with 1.5 mH transformer primary inductance
2. See Section 4.10: Pulse frequency modulation
3. See Section 4.7: Pulse skipping
4. Parameter assured by design and characterization.
VIPER31
Electrical and thermal ratings
DS13285 - Rev 6
page 8/39



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