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VIPER38HE 数据表(PDF) 9 Page - STMicroelectronics

部件名 VIPER38HE
功能描述  VIPerPlus family: peak power high-voltage converter
PDF  31 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

VIPER38HE 数据表(HTML) 9 Page - STMicroelectronics

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VIPER38
Electrical characteristics
31
Table 8. Controller section
Symbol
Parameter
Test condition
Min
Typ
Max
Unit
Feed-back pin
VFBolp
Overload shutdown threshold
4.5
4.8
5.2
V
VFBlin
Overload detection threshold
3.2
3.5
3.7
V
VFBbm
Burst mode threshold
Voltage falling
0.54
0.6
0.66
V
VFBbmhys
Burst mode hysteresis
Voltage rising
90
mV
IFB1
Feedback sourced current
VFB = 0.3 V
-150
-200
-280
uA
IFB2
Feedback current-OLP
delay
VFBlin < VFB < VFBolp
-3
uA
RFB(DYN)
Dynamic resistance
VFB < 3.3 V
14
21
k
Ω
HFB
∆V
FB / ∆ID
0.5
2
V/A
CONT pin
VCONT_l
Low-level clamp voltage
ICONT = -100 µA
0.4
0.5
0.6
V
VCONT_h
High-level clamp voltage
ICONT = 1 mA
5
5.5
6
V
Current limitation
IDlim
Max drain current limitation
VFB = 4 V, ICONT = -10 µA
TJ = 25 °C
1.07
1.15
1.23
A
tSS
Soft-start time
7.6
8.5
9.4
ms
tON_MIN
Minimum turn-on time
220
400
480
ns
td
Propagation delay
(1)
20
ns
tLEB
Leading edge blanking
(1)
380
ns
ID_BM
Peak drain current during burst
mode
VFB = 0.6 V
115
190
265
mA
Oscillator section
FOSC
VFB = 1 V
VIPER38L
54
60
66
kHz
VIPER38H
103
115
127
kHz
FD
Modulation depth
VIPER38L
±4
kHz
VIPER38H
±8
kHz
FM
Modulation frequency
830
920
1010
Hz
DMAX
Maximum duty cycle
70
80
%
Overcurrent protection (2nd OCP)
IDMAX
Second overcurrent threshold
1.7
A
Overvoltage protection
VOVP
Overvoltage protection threshold
2.7
3
3.3
V
tSTROBE
Overvoltage protection strobe time
1.5
2
2.5
µs



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